Code Style: use "#pragma once" in source directory

This replaces header include guards with `#pragma once`.
A couple of include guards are not removed yet (e.g. `__RNA_TYPES_H__`),
because they are used in other places.

This patch has been generated by P1561 followed by `make format`.

Differential Revision: https://developer.blender.org/D8466

219 files changed, 301 insertions, 793 deletions

diff --git a/source/blender/compositor/COM_compositor.h b/source/blender/compositor/COM_compositor.h
index a24904551c6..b200fa8d266 100644
--- a/source/blender/compositor/COM_compositor.h
+++ b/source/blender/compositor/COM_compositor.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COMPOSITOR_H__
-#define __COM_COMPOSITOR_H__
+#pragma once
 
 #include "DNA_color_types.h"
 #include "DNA_node_types.h"
@@ -364,4 +363,3 @@ void COM_deinitialize(void);
 }
 #endif
 
-#endif /* __COM_COMPOSITOR_H__ */
diff --git a/source/blender/compositor/COM_defines.h b/source/blender/compositor/COM_defines.h
index 3707845ef9b..a42719aaf09 100644
--- a/source/blender/compositor/COM_defines.h
+++ b/source/blender/compositor/COM_defines.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DEFINES_H__
-#define __COM_DEFINES_H__
+#pragma once
 
 /**
  * \brief possible data types for sockets
@@ -108,5 +107,3 @@ typedef enum OrderOfChunks {
 #define COM_NUM_CHANNELS_COLOR 4
 
 #define COM_BLUR_BOKEH_PIXELS 512
-
-#endif /* __COM_DEFINES_H__ */
diff --git a/source/blender/compositor/intern/COM_CPUDevice.h b/source/blender/compositor/intern/COM_CPUDevice.h
index 1d411569146..962380d7bc8 100644
--- a/source/blender/compositor/intern/COM_CPUDevice.h
+++ b/source/blender/compositor/intern/COM_CPUDevice.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CPUDEVICE_H__
-#define __COM_CPUDEVICE_H__
+#pragma once
 
 #include "COM_Device.h"
 
@@ -44,5 +43,3 @@ class CPUDevice : public Device {
  protected:
   int m_thread_id;
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_ChunkOrder.h b/source/blender/compositor/intern/COM_ChunkOrder.h
index e75c07136b4..32d8c07de83 100644
--- a/source/blender/compositor/intern/COM_ChunkOrder.h
+++ b/source/blender/compositor/intern/COM_ChunkOrder.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CHUNKORDER_H__
-#define __COM_CHUNKORDER_H__
+#pragma once
 
 #include "COM_ChunkOrderHotspot.h"
 class ChunkOrder {
@@ -53,5 +52,3 @@ class ChunkOrder {
     return this->m_distance;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_ChunkOrderHotspot.h b/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
index f0bc92ad6d6..afacf5fc672 100644
--- a/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
+++ b/source/blender/compositor/intern/COM_ChunkOrderHotspot.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CHUNKORDERHOTSPOT_H__
-#define __COM_CHUNKORDERHOTSPOT_H__
+#pragma once
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
@@ -37,5 +36,3 @@ class ChunkOrderHotspot {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:ChunkOrderHotspot")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_CompositorContext.h b/source/blender/compositor/intern/COM_CompositorContext.h
index 7e775b7beaf..e29a8f67187 100644
--- a/source/blender/compositor/intern/COM_CompositorContext.h
+++ b/source/blender/compositor/intern/COM_CompositorContext.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COMPOSITORCONTEXT_H__
-#define __COM_COMPOSITORCONTEXT_H__
+#pragma once
 
 #include "BLI_rect.h"
 #include "COM_defines.h"
@@ -269,5 +268,3 @@ class CompositorContext {
     return (this->getbNodeTree()->flag & NTREE_COM_GROUPNODE_BUFFER) != 0;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_Converter.h b/source/blender/compositor/intern/COM_Converter.h
index 1213246b9c9..fe3b8b75ccc 100644
--- a/source/blender/compositor/intern/COM_Converter.h
+++ b/source/blender/compositor/intern/COM_Converter.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVERTER_H__
-#define __COM_CONVERTER_H__
+#pragma once
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
@@ -85,4 +84,3 @@ class Converter {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:Converter")
 #endif
 };
-#endif
diff --git a/source/blender/compositor/intern/COM_Debug.h b/source/blender/compositor/intern/COM_Debug.h
index 250f360fa35..35e44506ef2 100644
--- a/source/blender/compositor/intern/COM_Debug.h
+++ b/source/blender/compositor/intern/COM_Debug.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_DEBUG_H__
-#define __COM_DEBUG_H__
+#pragma once
 
 #include <map>
 #include <string>
@@ -77,5 +76,3 @@ class DebugInfo {
   static GroupStateMap m_group_states;    /**< for visualizing group states */
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_Device.h b/source/blender/compositor/intern/COM_Device.h
index 8573f69658e..bb95f1e953c 100644
--- a/source/blender/compositor/intern/COM_Device.h
+++ b/source/blender/compositor/intern/COM_Device.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DEVICE_H__
-#define __COM_DEVICE_H__
+#pragma once
 
 #include "COM_WorkPackage.h"
 
@@ -62,5 +61,3 @@ class Device {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:Device")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_ExecutionGroup.h b/source/blender/compositor/intern/COM_ExecutionGroup.h
index 0299dad2ee8..f0dca4e9b34 100644
--- a/source/blender/compositor/intern/COM_ExecutionGroup.h
+++ b/source/blender/compositor/intern/COM_ExecutionGroup.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_EXECUTIONGROUP_H__
-#define __COM_EXECUTIONGROUP_H__
+#pragma once
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
@@ -447,5 +446,3 @@ class ExecutionGroup {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:ExecutionGroup")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_ExecutionSystem.h b/source/blender/compositor/intern/COM_ExecutionSystem.h
index bf65594fc4f..44b47787b06 100644
--- a/source/blender/compositor/intern/COM_ExecutionSystem.h
+++ b/source/blender/compositor/intern/COM_ExecutionSystem.h
@@ -18,8 +18,7 @@
 
 class ExecutionGroup;
 
-#ifndef __COM_EXECUTIONSYSTEM_H__
-#define __COM_EXECUTIONSYSTEM_H__
+#pragma once
 
 #include "BKE_text.h"
 #include "COM_ExecutionGroup.h"
@@ -196,5 +195,3 @@ class ExecutionSystem {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:ExecutionSystem")
 #endif
 };
-
-#endif /* __COM_EXECUTIONSYSTEM_H__ */
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index 6ba8f144482..fce1310f6ef 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -18,8 +18,7 @@
 
 class MemoryBuffer;
 
-#ifndef __COM_MEMORYBUFFER_H__
-#define __COM_MEMORYBUFFER_H__
+#pragma once
 
 #include "COM_ExecutionGroup.h"
 #include "COM_MemoryProxy.h"
@@ -357,5 +356,3 @@ class MemoryBuffer {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:MemoryBuffer")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_MemoryProxy.h b/source/blender/compositor/intern/COM_MemoryProxy.h
index afbe0e3c166..a40e6f95dce 100644
--- a/source/blender/compositor/intern/COM_MemoryProxy.h
+++ b/source/blender/compositor/intern/COM_MemoryProxy.h
@@ -18,8 +18,8 @@
 
 class MemoryProxy;
 
-#ifndef __COM_MEMORYPROXY_H__
-#define __COM_MEMORYPROXY_H__
+#pragma once
+
 #include "COM_ExecutionGroup.h"
 #include "COM_MemoryBuffer.h"
 
@@ -129,5 +129,3 @@ class MemoryProxy {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:MemoryProxy")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_Node.h b/source/blender/compositor/intern/COM_Node.h
index a2ab1996a19..0a34eff3492 100644
--- a/source/blender/compositor/intern/COM_Node.h
+++ b/source/blender/compositor/intern/COM_Node.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_NODE_H__
-#define __COM_NODE_H__
+#pragma once
 
 #include "DNA_node_types.h"
 #include <algorithm>
@@ -329,5 +328,3 @@ class NodeOutput {
   void getEditorValueColor(float *value);
   void getEditorValueVector(float *value);
 };
-
-#endif /* __COM_NODE_H__ */
diff --git a/source/blender/compositor/intern/COM_NodeConverter.h b/source/blender/compositor/intern/COM_NodeConverter.h
index 56e9aa85010..e9b05184857 100644
--- a/source/blender/compositor/intern/COM_NodeConverter.h
+++ b/source/blender/compositor/intern/COM_NodeConverter.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_NODECONVERTER_H__
-#define __COM_NODECONVERTER_H__
+#pragma once
 
 #ifdef WITH_CXX_GUARDEDALLOC
 #  include "MEM_guardedalloc.h"
@@ -121,5 +120,3 @@ class NodeConverter {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:NodeCompiler")
 #endif
 };
-
-#endif /* __COM_NODECONVERTER_H__ */
diff --git a/source/blender/compositor/intern/COM_NodeGraph.h b/source/blender/compositor/intern/COM_NodeGraph.h
index 531832c2c65..7cbd45bd0b5 100644
--- a/source/blender/compositor/intern/COM_NodeGraph.h
+++ b/source/blender/compositor/intern/COM_NodeGraph.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_NODEGRAPH_H__
-#define __COM_NODEGRAPH_H__
+#pragma once
 
 #include <map>
 #include <set>
@@ -135,5 +134,3 @@ class NodeGraph {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:NodeGraph")
 #endif
 };
-
-#endif /* __COM_NODEGRAPH_H__ */
diff --git a/source/blender/compositor/intern/COM_NodeOperation.h b/source/blender/compositor/intern/COM_NodeOperation.h
index d2c896a2e56..d9324729560 100644
--- a/source/blender/compositor/intern/COM_NodeOperation.h
+++ b/source/blender/compositor/intern/COM_NodeOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_NODEOPERATION_H__
-#define __COM_NODEOPERATION_H__
+#pragma once
 
 #include <list>
 #include <sstream>
@@ -521,5 +520,3 @@ class NodeOperationOutput {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:NodeOperation")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_NodeOperationBuilder.h b/source/blender/compositor/intern/COM_NodeOperationBuilder.h
index 917fa2888fd..5dd4022b127 100644
--- a/source/blender/compositor/intern/COM_NodeOperationBuilder.h
+++ b/source/blender/compositor/intern/COM_NodeOperationBuilder.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_NODEOPERATIONBUILDER_H__
-#define __COM_NODEOPERATIONBUILDER_H__
+#pragma once
 
 #include <map>
 #include <set>
@@ -176,5 +175,3 @@ class NodeOperationBuilder {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:NodeCompilerImpl")
 #endif
 };
-
-#endif /* __COM_NODEOPERATIONBUILDER_H__ */
diff --git a/source/blender/compositor/intern/COM_OpenCLDevice.h b/source/blender/compositor/intern/COM_OpenCLDevice.h
index 3f6e0fb55ef..d502f5aa34b 100644
--- a/source/blender/compositor/intern/COM_OpenCLDevice.h
+++ b/source/blender/compositor/intern/COM_OpenCLDevice.h
@@ -18,8 +18,7 @@
 
 class OpenCLDevice;
 
-#ifndef __COM_OPENCLDEVICE_H__
-#define __COM_OPENCLDEVICE_H__
+#pragma once
 
 #include "COM_Device.h"
 #include "COM_ReadBufferOperation.h"
@@ -133,5 +132,3 @@ class OpenCLDevice : public Device {
                           NodeOperation *operation);
   cl_kernel COM_clCreateKernel(const char *kernelname, list<cl_kernel> *clKernelsToCleanUp);
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_SingleThreadedOperation.h b/source/blender/compositor/intern/COM_SingleThreadedOperation.h
index 68c7f05a6c2..7a97d790afe 100644
--- a/source/blender/compositor/intern/COM_SingleThreadedOperation.h
+++ b/source/blender/compositor/intern/COM_SingleThreadedOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SINGLETHREADEDOPERATION_H__
-#define __COM_SINGLETHREADEDOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class SingleThreadedOperation : public NodeOperation {
@@ -57,4 +57,3 @@ class SingleThreadedOperation : public NodeOperation {
     return true;
   }
 };
-#endif
diff --git a/source/blender/compositor/intern/COM_SocketReader.h b/source/blender/compositor/intern/COM_SocketReader.h
index 82bebd5e7b9..ee2a6e0e1bf 100644
--- a/source/blender/compositor/intern/COM_SocketReader.h
+++ b/source/blender/compositor/intern/COM_SocketReader.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SOCKETREADER_H__
-#define __COM_SOCKETREADER_H__
+#pragma once
+
 #include "BLI_rect.h"
 #include "COM_defines.h"
 
@@ -138,5 +138,3 @@ class SocketReader {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:SocketReader")
 #endif
 };
-
-#endif /* __COM_SOCKETREADER_H__ */
diff --git a/source/blender/compositor/intern/COM_WorkPackage.h b/source/blender/compositor/intern/COM_WorkPackage.h
index 2a0e47301f5..f4370aa41be 100644
--- a/source/blender/compositor/intern/COM_WorkPackage.h
+++ b/source/blender/compositor/intern/COM_WorkPackage.h
@@ -18,8 +18,8 @@
 
 class WorkPackage;
 
-#ifndef __COM_WORKPACKAGE_H__
-#define __COM_WORKPACKAGE_H__
+#pragma once
+
 class ExecutionGroup;
 #include "COM_ExecutionGroup.h"
 
@@ -67,5 +67,3 @@ class WorkPackage {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:WorkPackage")
 #endif
 };
-
-#endif
diff --git a/source/blender/compositor/intern/COM_WorkScheduler.h b/source/blender/compositor/intern/COM_WorkScheduler.h
index 3a1b4c533bd..2424d1bdb72 100644
--- a/source/blender/compositor/intern/COM_WorkScheduler.h
+++ b/source/blender/compositor/intern/COM_WorkScheduler.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_WORKSCHEDULER_H__
-#define __COM_WORKSCHEDULER_H__
+#pragma once
 
 #include "COM_ExecutionGroup.h"
 
@@ -116,5 +115,3 @@ class WorkScheduler {
   MEM_CXX_CLASS_ALLOC_FUNCS("COM:WorkScheduler")
 #endif
 };
-
-#endif /* __COM_WORKSCHEDULER_H__ */
diff --git a/source/blender/compositor/nodes/COM_AlphaOverNode.h b/source/blender/compositor/nodes/COM_AlphaOverNode.h
index 27e868e6f25..32cd2e20204 100644
--- a/source/blender/compositor/nodes/COM_AlphaOverNode.h
+++ b/source/blender/compositor/nodes/COM_AlphaOverNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ALPHAOVERNODE_H__
-#define __COM_ALPHAOVERNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -32,5 +31,3 @@ class AlphaOverNode : public Node {
   }
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BilateralBlurNode.h b/source/blender/compositor/nodes/COM_BilateralBlurNode.h
index abed491c891..39308c7d1b6 100644
--- a/source/blender/compositor/nodes/COM_BilateralBlurNode.h
+++ b/source/blender/compositor/nodes/COM_BilateralBlurNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BILATERALBLURNODE_H__
-#define __COM_BILATERALBLURNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BilateralBlurNode : public Node {
   BilateralBlurNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BlurNode.h b/source/blender/compositor/nodes/COM_BlurNode.h
index f0d6cad320e..3c832c93ca2 100644
--- a/source/blender/compositor/nodes/COM_BlurNode.h
+++ b/source/blender/compositor/nodes/COM_BlurNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BLURNODE_H__
-#define __COM_BLURNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BlurNode : public Node {
   BlurNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BokehBlurNode.h b/source/blender/compositor/nodes/COM_BokehBlurNode.h
index e2f728fb30b..87aca9af1f6 100644
--- a/source/blender/compositor/nodes/COM_BokehBlurNode.h
+++ b/source/blender/compositor/nodes/COM_BokehBlurNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOKEHBLURNODE_H__
-#define __COM_BOKEHBLURNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BokehBlurNode : public Node {
   BokehBlurNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BokehImageNode.h b/source/blender/compositor/nodes/COM_BokehImageNode.h
index 3e78e8d5185..b9d957cd6df 100644
--- a/source/blender/compositor/nodes/COM_BokehImageNode.h
+++ b/source/blender/compositor/nodes/COM_BokehImageNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOKEHIMAGENODE_H__
-#define __COM_BOKEHIMAGENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BokehImageNode : public Node {
   BokehImageNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BoxMaskNode.h b/source/blender/compositor/nodes/COM_BoxMaskNode.h
index 0d39014bbd0..b815fd75284 100644
--- a/source/blender/compositor/nodes/COM_BoxMaskNode.h
+++ b/source/blender/compositor/nodes/COM_BoxMaskNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOXMASKNODE_H__
-#define __COM_BOXMASKNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BoxMaskNode : public Node {
   BoxMaskNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_BrightnessNode.h b/source/blender/compositor/nodes/COM_BrightnessNode.h
index 8529fc17d9c..b64b622dd71 100644
--- a/source/blender/compositor/nodes/COM_BrightnessNode.h
+++ b/source/blender/compositor/nodes/COM_BrightnessNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BRIGHTNESSNODE_H__
-#define __COM_BRIGHTNESSNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class BrightnessNode : public Node {
   BrightnessNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ChannelMatteNode.h b/source/blender/compositor/nodes/COM_ChannelMatteNode.h
index e6cd8bf6f0d..bca821fa60c 100644
--- a/source/blender/compositor/nodes/COM_ChannelMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ChannelMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_CHANNELMATTENODE_H__
-#define __COM_CHANNELMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ChannelMatteNode : public Node {
   ChannelMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ChannelMatteNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ChromaMatteNode.h b/source/blender/compositor/nodes/COM_ChromaMatteNode.h
index cfb6f23ebcb..d8febdde36f 100644
--- a/source/blender/compositor/nodes/COM_ChromaMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ChromaMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CHROMAMATTENODE_H__
-#define __COM_CHROMAMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ChromaMatteNode : public Node {
   ChromaMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ChromaMatteNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ColorBalanceNode.h b/source/blender/compositor/nodes/COM_ColorBalanceNode.h
index 482b34e7809..302b66863ca 100644
--- a/source/blender/compositor/nodes/COM_ColorBalanceNode.h
+++ b/source/blender/compositor/nodes/COM_ColorBalanceNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORBALANCENODE_H__
-#define __COM_COLORBALANCENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorBalanceNode : public Node {
   ColorBalanceNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ColorBalanceNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ColorCorrectionNode.h b/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
index 0275106095e..be6545f0cfa 100644
--- a/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
+++ b/source/blender/compositor/nodes/COM_ColorCorrectionNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORCORRECTIONNODE_H__
-#define __COM_COLORCORRECTIONNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorCorrectionNode : public Node {
   ColorCorrectionNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ColorCurveNode.h b/source/blender/compositor/nodes/COM_ColorCurveNode.h
index 2a529e5713e..6eaf1db6fbb 100644
--- a/source/blender/compositor/nodes/COM_ColorCurveNode.h
+++ b/source/blender/compositor/nodes/COM_ColorCurveNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORCURVENODE_H__
-#define __COM_COLORCURVENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorCurveNode : public Node {
   ColorCurveNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ColorMatteNode.h b/source/blender/compositor/nodes/COM_ColorMatteNode.h
index 1f02a091307..e84bdfc836f 100644
--- a/source/blender/compositor/nodes/COM_ColorMatteNode.h
+++ b/source/blender/compositor/nodes/COM_ColorMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORMATTENODE_H__
-#define __COM_COLORMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorMatteNode : public Node {
   ColorMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ColorMatteNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ColorNode.h b/source/blender/compositor/nodes/COM_ColorNode.h
index 5c7580a9ec9..9b50e9ab7d4 100644
--- a/source/blender/compositor/nodes/COM_ColorNode.h
+++ b/source/blender/compositor/nodes/COM_ColorNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORNODE_H__
-#define __COM_COLORNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorNode : public Node {
   ColorNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ColorRampNode.h b/source/blender/compositor/nodes/COM_ColorRampNode.h
index 3f7a188e549..b53edf14dbd 100644
--- a/source/blender/compositor/nodes/COM_ColorRampNode.h
+++ b/source/blender/compositor/nodes/COM_ColorRampNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORRAMPNODE_H__
-#define __COM_COLORRAMPNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorRampNode : public Node {
   ColorRampNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ColorRampNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ColorSpillNode.h b/source/blender/compositor/nodes/COM_ColorSpillNode.h
index 4678d1dd7b1..3cf8072c7b7 100644
--- a/source/blender/compositor/nodes/COM_ColorSpillNode.h
+++ b/source/blender/compositor/nodes/COM_ColorSpillNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORSPILLNODE_H__
-#define __COM_COLORSPILLNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ColorSpillNode : public Node {
   ColorSpillNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_ColorSpillNODE_H */
diff --git a/source/blender/compositor/nodes/COM_ColorToBWNode.h b/source/blender/compositor/nodes/COM_ColorToBWNode.h
index d811cab8019..6e7025de496 100644
--- a/source/blender/compositor/nodes/COM_ColorToBWNode.h
+++ b/source/blender/compositor/nodes/COM_ColorToBWNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORTOBWNODE_H__
-#define __COM_COLORTOBWNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,4 +29,3 @@ class ColorToBWNode : public Node {
   ColorToBWNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_CombineColorNode.h b/source/blender/compositor/nodes/COM_CombineColorNode.h
index 203a8e84306..378a4855abf 100644
--- a/source/blender/compositor/nodes/COM_CombineColorNode.h
+++ b/source/blender/compositor/nodes/COM_CombineColorNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COMBINECOLORNODE_H__
-#define __COM_COMBINECOLORNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -65,5 +64,3 @@ class CombineYUVANode : public CombineColorNode {
 
   NodeOperation *getColorConverter(const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_CompositorNode.h b/source/blender/compositor/nodes/COM_CompositorNode.h
index 8fb2a5a5cf5..a75355dfc14 100644
--- a/source/blender/compositor/nodes/COM_CompositorNode.h
+++ b/source/blender/compositor/nodes/COM_CompositorNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COMPOSITORNODE_H__
-#define __COM_COMPOSITORNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,4 +29,3 @@ class CompositorNode : public Node {
   CompositorNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_ConvertAlphaNode.h b/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
index 8fdeae39ada..372f34a576f 100644
--- a/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
+++ b/source/blender/compositor/nodes/COM_ConvertAlphaNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_CONVERTALPHANODE_H__
-#define __COM_CONVERTALPHANODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -32,5 +31,3 @@ class ConvertAlphaNode : public Node {
   }
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_CornerPinNode.h b/source/blender/compositor/nodes/COM_CornerPinNode.h
index a8e88a0ef4f..ba845a614fb 100644
--- a/source/blender/compositor/nodes/COM_CornerPinNode.h
+++ b/source/blender/compositor/nodes/COM_CornerPinNode.h
@@ -15,8 +15,7 @@
  * Copyright 2014, Blender Foundation.
  */
 
-#ifndef __COM_CORNERPINNODE_H__
-#define __COM_CORNERPINNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -31,5 +30,3 @@ class CornerPinNode : public Node {
   CornerPinNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_CORNERPINNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_CropNode.h b/source/blender/compositor/nodes/COM_CropNode.h
index 295d4fb77e1..f643ebbabcc 100644
--- a/source/blender/compositor/nodes/COM_CropNode.h
+++ b/source/blender/compositor/nodes/COM_CropNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CROPNODE_H__
-#define __COM_CROPNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class CropNode : public Node {
   CropNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_CryptomatteNode.h b/source/blender/compositor/nodes/COM_CryptomatteNode.h
index 91f8051f125..1fb8893efa0 100644
--- a/source/blender/compositor/nodes/COM_CryptomatteNode.h
+++ b/source/blender/compositor/nodes/COM_CryptomatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2018, Blender Foundation.
  */
 
-#ifndef __COM_CRYPTOMATTENODE_H__
-#define __COM_CRYPTOMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class CryptomatteNode : public Node {
   CryptomatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DefocusNode.h b/source/blender/compositor/nodes/COM_DefocusNode.h
index f2589c7ae1a..c042e98c515 100644
--- a/source/blender/compositor/nodes/COM_DefocusNode.h
+++ b/source/blender/compositor/nodes/COM_DefocusNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DEFOCUSNODE_H__
-#define __COM_DEFOCUSNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DefocusNode : public Node {
   DefocusNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DenoiseNode.h b/source/blender/compositor/nodes/COM_DenoiseNode.h
index 6cbe598f7d2..99f59c89fdb 100644
--- a/source/blender/compositor/nodes/COM_DenoiseNode.h
+++ b/source/blender/compositor/nodes/COM_DenoiseNode.h
@@ -16,8 +16,7 @@
  * Copyright 2019, Blender Foundation.
  */
 
-#ifndef __COM_DENOISENODE_H__
-#define __COM_DENOISENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DenoiseNode : public Node {
   DenoiseNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DespeckleNode.h b/source/blender/compositor/nodes/COM_DespeckleNode.h
index ee510a0568c..6b39dd94ac7 100644
--- a/source/blender/compositor/nodes/COM_DespeckleNode.h
+++ b/source/blender/compositor/nodes/COM_DespeckleNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DESPECKLENODE_H__
-#define __COM_DESPECKLENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DespeckleNode : public Node {
   DespeckleNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DifferenceMatteNode.h b/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
index 3a86a0bbf85..26be5fe1e80 100644
--- a/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_DifferenceMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DIFFERENCEMATTENODE_H__
-#define __COM_DIFFERENCEMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DifferenceMatteNode : public Node {
   DifferenceMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_DifferenceMatteNODE_H */
diff --git a/source/blender/compositor/nodes/COM_DilateErodeNode.h b/source/blender/compositor/nodes/COM_DilateErodeNode.h
index d5b2863a4bb..090095df447 100644
--- a/source/blender/compositor/nodes/COM_DilateErodeNode.h
+++ b/source/blender/compositor/nodes/COM_DilateErodeNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DILATEERODENODE_H__
-#define __COM_DILATEERODENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -33,5 +32,3 @@ class DilateErodeNode : public Node {
   DilateErodeNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DirectionalBlurNode.h b/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
index 0f9249a83a5..dfb705cbe64 100644
--- a/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
+++ b/source/blender/compositor/nodes/COM_DirectionalBlurNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DIRECTIONALBLURNODE_H__
-#define __COM_DIRECTIONALBLURNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DirectionalBlurNode : public Node {
   DirectionalBlurNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_DisplaceNode.h b/source/blender/compositor/nodes/COM_DisplaceNode.h
index e6a13e06772..a9e8a5ad657 100644
--- a/source/blender/compositor/nodes/COM_DisplaceNode.h
+++ b/source/blender/compositor/nodes/COM_DisplaceNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DISPLACENODE_H__
-#define __COM_DISPLACENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,4 +29,3 @@ class DisplaceNode : public Node {
   DisplaceNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_DistanceMatteNode.h b/source/blender/compositor/nodes/COM_DistanceMatteNode.h
index baba9bb8c97..6ae71ef715f 100644
--- a/source/blender/compositor/nodes/COM_DistanceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_DistanceMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DISTANCEMATTENODE_H__
-#define __COM_DISTANCEMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DistanceMatteNode : public Node {
   DistanceMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_DistanceMatteNODE_H */
diff --git a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
index c45d42675f3..6d26cbbf528 100644
--- a/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
+++ b/source/blender/compositor/nodes/COM_DoubleEdgeMaskNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DOUBLEEDGEMASKNODE_H__
-#define __COM_DOUBLEEDGEMASKNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class DoubleEdgeMaskNode : public Node {
   DoubleEdgeMaskNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_EllipseMaskNode.h b/source/blender/compositor/nodes/COM_EllipseMaskNode.h
index b7093bf68fa..d7376cad52e 100644
--- a/source/blender/compositor/nodes/COM_EllipseMaskNode.h
+++ b/source/blender/compositor/nodes/COM_EllipseMaskNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ELLIPSEMASKNODE_H__
-#define __COM_ELLIPSEMASKNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class EllipseMaskNode : public Node {
   EllipseMaskNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_FilterNode.h b/source/blender/compositor/nodes/COM_FilterNode.h
index d0e824051bb..735d8925b48 100644
--- a/source/blender/compositor/nodes/COM_FilterNode.h
+++ b/source/blender/compositor/nodes/COM_FilterNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_FILTERNODE_H__
-#define __COM_FILTERNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class FilterNode : public Node {
   FilterNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_FILTERNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_FlipNode.h b/source/blender/compositor/nodes/COM_FlipNode.h
index 2122961dac9..e819c003430 100644
--- a/source/blender/compositor/nodes/COM_FlipNode.h
+++ b/source/blender/compositor/nodes/COM_FlipNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_FLIPNODE_H__
-#define __COM_FLIPNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class FlipNode : public Node {
   FlipNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_GammaNode.h b/source/blender/compositor/nodes/COM_GammaNode.h
index 46573fc4b3f..1a4d02af160 100644
--- a/source/blender/compositor/nodes/COM_GammaNode.h
+++ b/source/blender/compositor/nodes/COM_GammaNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAMMANODE_H__
-#define __COM_GAMMANODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class GammaNode : public Node {
   GammaNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_GlareNode.h b/source/blender/compositor/nodes/COM_GlareNode.h
index 051ae1d1dc3..7463af97306 100644
--- a/source/blender/compositor/nodes/COM_GlareNode.h
+++ b/source/blender/compositor/nodes/COM_GlareNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLARENODE_H__
-#define __COM_GLARENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class GlareNode : public Node {
   GlareNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
index 270d29cc41b..01790c1a5fb 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueCorrectNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_HUESATURATIONVALUECORRECTNODE_H__
-#define __COM_HUESATURATIONVALUECORRECTNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,4 +29,3 @@ class HueSaturationValueCorrectNode : public Node {
   HueSaturationValueCorrectNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_HueSaturationValueNode.h b/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
index 5e023a0762d..7ef7abe4188 100644
--- a/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
+++ b/source/blender/compositor/nodes/COM_HueSaturationValueNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_HUESATURATIONVALUENODE_H__
-#define __COM_HUESATURATIONVALUENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,4 +29,3 @@ class HueSaturationValueNode : public Node {
   HueSaturationValueNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_IDMaskNode.h b/source/blender/compositor/nodes/COM_IDMaskNode.h
index 3f4019bf5b7..51076619951 100644
--- a/source/blender/compositor/nodes/COM_IDMaskNode.h
+++ b/source/blender/compositor/nodes/COM_IDMaskNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_IDMASKNODE_H__
-#define __COM_IDMASKNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class IDMaskNode : public Node {
   IDMaskNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ImageNode.h b/source/blender/compositor/nodes/COM_ImageNode.h
index 7883f4d7ab3..9481ef4f7b1 100644
--- a/source/blender/compositor/nodes/COM_ImageNode.h
+++ b/source/blender/compositor/nodes/COM_ImageNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_IMAGENODE_H__
-#define __COM_IMAGENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "COM_defines.h"
@@ -46,5 +45,3 @@ class ImageNode : public Node {
   ImageNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_IMAGENODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_InpaintNode.h b/source/blender/compositor/nodes/COM_InpaintNode.h
index 61a7ac63146..3f778c8ba5c 100644
--- a/source/blender/compositor/nodes/COM_InpaintNode.h
+++ b/source/blender/compositor/nodes/COM_InpaintNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_INPAINTNODE_H__
-#define __COM_INPAINTNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class InpaintNode : public Node {
   InpaintNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_InvertNode.h b/source/blender/compositor/nodes/COM_InvertNode.h
index 02e2eb38dc9..d90d6e48713 100644
--- a/source/blender/compositor/nodes/COM_InvertNode.h
+++ b/source/blender/compositor/nodes/COM_InvertNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_INVERTNODE_H__
-#define __COM_INVERTNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class InvertNode : public Node {
   InvertNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_KeyingNode.h b/source/blender/compositor/nodes/COM_KeyingNode.h
index fc5f55e33ae..cfb1f2e6ddf 100644
--- a/source/blender/compositor/nodes/COM_KeyingNode.h
+++ b/source/blender/compositor/nodes/COM_KeyingNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGNODE_H__
-#define __COM_KEYINGNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -58,5 +57,3 @@ class KeyingNode : public Node {
   KeyingNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_KEYINGNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_KeyingScreenNode.h b/source/blender/compositor/nodes/COM_KeyingScreenNode.h
index 12db2ed8889..ce9ef54543d 100644
--- a/source/blender/compositor/nodes/COM_KeyingScreenNode.h
+++ b/source/blender/compositor/nodes/COM_KeyingScreenNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGSCREENNODE_H__
-#define __COM_KEYINGSCREENNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class KeyingScreenNode : public Node {
   KeyingScreenNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_KEYINGSCREENNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_LensDistortionNode.h b/source/blender/compositor/nodes/COM_LensDistortionNode.h
index f4d9e127558..8df0e3f7df1 100644
--- a/source/blender/compositor/nodes/COM_LensDistortionNode.h
+++ b/source/blender/compositor/nodes/COM_LensDistortionNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_LENSDISTORTIONNODE_H__
-#define __COM_LENSDISTORTIONNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class LensDistortionNode : public Node {
   LensDistortionNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_LuminanceMatteNode.h b/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
index 57a8f25602a..7f2d9dfbe95 100644
--- a/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
+++ b/source/blender/compositor/nodes/COM_LuminanceMatteNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_LUMINANCEMATTENODE_H__
-#define __COM_LUMINANCEMATTENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class LuminanceMatteNode : public Node {
   LuminanceMatteNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_LUMINANCEMATTENODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_MapRangeNode.h b/source/blender/compositor/nodes/COM_MapRangeNode.h
index b63524291c1..b838ea858ee 100644
--- a/source/blender/compositor/nodes/COM_MapRangeNode.h
+++ b/source/blender/compositor/nodes/COM_MapRangeNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_MAPRANGENODE_H__
-#define __COM_MAPRANGENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,5 +29,3 @@ class MapRangeNode : public Node {
   MapRangeNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_MAPRANGENODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_MapUVNode.h b/source/blender/compositor/nodes/COM_MapUVNode.h
index 46892453b92..f9fc413dbe5 100644
--- a/source/blender/compositor/nodes/COM_MapUVNode.h
+++ b/source/blender/compositor/nodes/COM_MapUVNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MAPUVNODE_H__
-#define __COM_MAPUVNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,4 +29,3 @@ class MapUVNode : public Node {
   MapUVNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_MapValueNode.h b/source/blender/compositor/nodes/COM_MapValueNode.h
index 289b4f24138..60ee262d447 100644
--- a/source/blender/compositor/nodes/COM_MapValueNode.h
+++ b/source/blender/compositor/nodes/COM_MapValueNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MAPVALUENODE_H__
-#define __COM_MAPVALUENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,5 +29,3 @@ class MapValueNode : public Node {
   MapValueNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_MAPVALUENODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_MaskNode.h b/source/blender/compositor/nodes/COM_MaskNode.h
index 6c8006a8de6..4a03916b3c2 100644
--- a/source/blender/compositor/nodes/COM_MaskNode.h
+++ b/source/blender/compositor/nodes/COM_MaskNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_MASKNODE_H__
-#define __COM_MASKNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class MaskNode : public Node {
   MaskNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_MASKNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_MathNode.h b/source/blender/compositor/nodes/COM_MathNode.h
index e53d84a221f..41b144679ac 100644
--- a/source/blender/compositor/nodes/COM_MathNode.h
+++ b/source/blender/compositor/nodes/COM_MathNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MATHNODE_H__
-#define __COM_MATHNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -32,5 +31,3 @@ class MathNode : public Node {
   }
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_MixNode.h b/source/blender/compositor/nodes/COM_MixNode.h
index 511e1ffa7a8..91ce29fdbf2 100644
--- a/source/blender/compositor/nodes/COM_MixNode.h
+++ b/source/blender/compositor/nodes/COM_MixNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MIXNODE_H__
-#define __COM_MIXNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,4 +29,3 @@ class MixNode : public Node {
   MixNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_MovieClipNode.h b/source/blender/compositor/nodes/COM_MovieClipNode.h
index 2c3f29772d5..58262592dca 100644
--- a/source/blender/compositor/nodes/COM_MovieClipNode.h
+++ b/source/blender/compositor/nodes/COM_MovieClipNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MOVIECLIPNODE_H__
-#define __COM_MOVIECLIPNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class MovieClipNode : public Node {
   MovieClipNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_MOVIECLIPNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_MovieDistortionNode.h b/source/blender/compositor/nodes/COM_MovieDistortionNode.h
index da687080691..f4df48dac13 100644
--- a/source/blender/compositor/nodes/COM_MovieDistortionNode.h
+++ b/source/blender/compositor/nodes/COM_MovieDistortionNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MOVIEDISTORTIONNODE_H__
-#define __COM_MOVIEDISTORTIONNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class MovieDistortionNode : public Node {
   MovieDistortionNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_NormalNode.h b/source/blender/compositor/nodes/COM_NormalNode.h
index 4151960c506..c23e83fb023 100644
--- a/source/blender/compositor/nodes/COM_NormalNode.h
+++ b/source/blender/compositor/nodes/COM_NormalNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_NORMALNODE_H__
-#define __COM_NORMALNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class NormalNode : public Node {
   NormalNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* COM_NormalNODE_H */
diff --git a/source/blender/compositor/nodes/COM_NormalizeNode.h b/source/blender/compositor/nodes/COM_NormalizeNode.h
index 593c98f2ce2..7e53ac7e9a0 100644
--- a/source/blender/compositor/nodes/COM_NormalizeNode.h
+++ b/source/blender/compositor/nodes/COM_NormalizeNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_NORMALIZENODE_H__
-#define __COM_NORMALIZENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class NormalizeNode : public Node {
   NormalizeNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_OutputFileNode.h b/source/blender/compositor/nodes/COM_OutputFileNode.h
index 932fa375a3a..037a345fa50 100644
--- a/source/blender/compositor/nodes/COM_OutputFileNode.h
+++ b/source/blender/compositor/nodes/COM_OutputFileNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_OUTPUTFILENODE_H__
-#define __COM_OUTPUTFILENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class OutputFileNode : public Node {
   OutputFileNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_PixelateNode.h b/source/blender/compositor/nodes/COM_PixelateNode.h
index f46035398e2..87cb4df59e8 100644
--- a/source/blender/compositor/nodes/COM_PixelateNode.h
+++ b/source/blender/compositor/nodes/COM_PixelateNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_PIXELATENODE_H__
-#define __COM_PIXELATENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class PixelateNode : public Node {
   PixelateNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
index 2c17739a220..36844bc1650 100644
--- a/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
+++ b/source/blender/compositor/nodes/COM_PlaneTrackDeformNode.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_PLANETRACKDEFORMNODE_H__
-#define __COM_PLANETRACKDEFORMNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -33,5 +32,3 @@ class PlaneTrackDeformNode : public Node {
   PlaneTrackDeformNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_PLANETRACKDEFORMNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_RenderLayersNode.h b/source/blender/compositor/nodes/COM_RenderLayersNode.h
index c992f60581f..1ffd084ad1e 100644
--- a/source/blender/compositor/nodes/COM_RenderLayersNode.h
+++ b/source/blender/compositor/nodes/COM_RenderLayersNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_RENDERLAYERSNODE_H__
-#define __COM_RENDERLAYERSNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "COM_RenderLayersProg.h"
@@ -49,5 +48,3 @@ class RenderLayersNode : public Node {
   void missingSocketLink(NodeConverter &converter, NodeOutput *output) const;
   void missingRenderLink(NodeConverter &converter) const;
 };
-
-#endif /* __COM_RENDERLAYERSNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_RotateNode.h b/source/blender/compositor/nodes/COM_RotateNode.h
index e7440bb7a8e..b75fdd52683 100644
--- a/source/blender/compositor/nodes/COM_RotateNode.h
+++ b/source/blender/compositor/nodes/COM_RotateNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ROTATENODE_H__
-#define __COM_ROTATENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class RotateNode : public Node {
   RotateNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ScaleNode.h b/source/blender/compositor/nodes/COM_ScaleNode.h
index b6e589cfcec..c9a02411b1c 100644
--- a/source/blender/compositor/nodes/COM_ScaleNode.h
+++ b/source/blender/compositor/nodes/COM_ScaleNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SCALENODE_H__
-#define __COM_SCALENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ScaleNode : public Node {
   ScaleNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SeparateColorNode.h b/source/blender/compositor/nodes/COM_SeparateColorNode.h
index f98a9d6d12f..aaf86c6e22b 100644
--- a/source/blender/compositor/nodes/COM_SeparateColorNode.h
+++ b/source/blender/compositor/nodes/COM_SeparateColorNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SEPARATECOLORNODE_H__
-#define __COM_SEPARATECOLORNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -65,5 +64,3 @@ class SeparateYUVANode : public SeparateColorNode {
 
   NodeOperation *getColorConverter(const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SetAlphaNode.h b/source/blender/compositor/nodes/COM_SetAlphaNode.h
index 9882b3e62e9..2e652539cec 100644
--- a/source/blender/compositor/nodes/COM_SetAlphaNode.h
+++ b/source/blender/compositor/nodes/COM_SetAlphaNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETALPHANODE_H__
-#define __COM_SETALPHANODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -32,5 +31,3 @@ class SetAlphaNode : public Node {
   }
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SocketProxyNode.h b/source/blender/compositor/nodes/COM_SocketProxyNode.h
index 21e888d323e..a0c0b63dafd 100644
--- a/source/blender/compositor/nodes/COM_SocketProxyNode.h
+++ b/source/blender/compositor/nodes/COM_SocketProxyNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SOCKETPROXYNODE_H__
-#define __COM_SOCKETPROXYNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -52,5 +51,3 @@ class SocketBufferNode : public Node {
   SocketBufferNode(bNode *editorNode, bNodeSocket *editorInput, bNodeSocket *editorOutput);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SplitViewerNode.h b/source/blender/compositor/nodes/COM_SplitViewerNode.h
index 2e350720841..c9ce5164ef4 100644
--- a/source/blender/compositor/nodes/COM_SplitViewerNode.h
+++ b/source/blender/compositor/nodes/COM_SplitViewerNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SPLITVIEWERNODE_H__
-#define __COM_SPLITVIEWERNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,4 +29,3 @@ class SplitViewerNode : public Node {
   SplitViewerNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_Stabilize2dNode.h b/source/blender/compositor/nodes/COM_Stabilize2dNode.h
index bbf7b239d82..cb46926a3f3 100644
--- a/source/blender/compositor/nodes/COM_Stabilize2dNode.h
+++ b/source/blender/compositor/nodes/COM_Stabilize2dNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_STABILIZE2DNODE_H__
-#define __COM_STABILIZE2DNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class Stabilize2dNode : public Node {
   Stabilize2dNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SunBeamsNode.h b/source/blender/compositor/nodes/COM_SunBeamsNode.h
index 9d35f40f760..9a56fc1fcea 100644
--- a/source/blender/compositor/nodes/COM_SunBeamsNode.h
+++ b/source/blender/compositor/nodes/COM_SunBeamsNode.h
@@ -15,8 +15,7 @@
  * Copyright 2014, Blender Foundation.
  */
 
-#ifndef __COM_SUNBEAMSNODE_H__
-#define __COM_SUNBEAMSNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -29,5 +28,3 @@ class SunBeamsNode : public Node {
   SunBeamsNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_SwitchNode.h b/source/blender/compositor/nodes/COM_SwitchNode.h
index 509b748b18a..d4d8dd23a98 100644
--- a/source/blender/compositor/nodes/COM_SwitchNode.h
+++ b/source/blender/compositor/nodes/COM_SwitchNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SWITCHNODE_H__
-#define __COM_SWITCHNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "COM_NodeOperation.h"
@@ -31,4 +30,3 @@ class SwitchNode : public Node {
   SwitchNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_SwitchViewNode.h b/source/blender/compositor/nodes/COM_SwitchViewNode.h
index 0260621961d..9423740f668 100644
--- a/source/blender/compositor/nodes/COM_SwitchViewNode.h
+++ b/source/blender/compositor/nodes/COM_SwitchViewNode.h
@@ -16,8 +16,7 @@
  * Copyright 2015, Blender Foundation.
  */
 
-#ifndef __COM_SWITCHVIEWNODE_H__
-#define __COM_SWITCHVIEWNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "COM_NodeOperation.h"
@@ -31,4 +30,3 @@ class SwitchViewNode : public Node {
   SwitchViewNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_TextureNode.h b/source/blender/compositor/nodes/COM_TextureNode.h
index 8fe620a89b3..4d780850190 100644
--- a/source/blender/compositor/nodes/COM_TextureNode.h
+++ b/source/blender/compositor/nodes/COM_TextureNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TEXTURENODE_H__
-#define __COM_TEXTURENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class TextureNode : public Node {
   TextureNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_TEXTURENODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_TimeNode.h b/source/blender/compositor/nodes/COM_TimeNode.h
index 230ffe3b676..78177014dc1 100644
--- a/source/blender/compositor/nodes/COM_TimeNode.h
+++ b/source/blender/compositor/nodes/COM_TimeNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TIMENODE_H__
-#define __COM_TIMENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class TimeNode : public Node {
   TimeNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_TonemapNode.h b/source/blender/compositor/nodes/COM_TonemapNode.h
index 9e6c01a5e45..d934a1ede5b 100644
--- a/source/blender/compositor/nodes/COM_TonemapNode.h
+++ b/source/blender/compositor/nodes/COM_TonemapNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TONEMAPNODE_H__
-#define __COM_TONEMAPNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class TonemapNode : public Node {
   TonemapNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_TrackPositionNode.h b/source/blender/compositor/nodes/COM_TrackPositionNode.h
index 7136077a123..37d3d25d592 100644
--- a/source/blender/compositor/nodes/COM_TrackPositionNode.h
+++ b/source/blender/compositor/nodes/COM_TrackPositionNode.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_TRACKPOSITIONNODE_H__
-#define __COM_TRACKPOSITIONNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class TrackPositionNode : public Node {
   TrackPositionNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_TRACKPOSITIONNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_TransformNode.h b/source/blender/compositor/nodes/COM_TransformNode.h
index 12eb66a19bb..bd01808d662 100644
--- a/source/blender/compositor/nodes/COM_TransformNode.h
+++ b/source/blender/compositor/nodes/COM_TransformNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TRANSFORMNODE_H__
-#define __COM_TRANSFORMNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -31,5 +30,3 @@ class TransformNode : public Node {
   TransformNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif /* __COM_TRANSFORMNODE_H__ */
diff --git a/source/blender/compositor/nodes/COM_TranslateNode.h b/source/blender/compositor/nodes/COM_TranslateNode.h
index d9ef6c639a0..d381274c0e5 100644
--- a/source/blender/compositor/nodes/COM_TranslateNode.h
+++ b/source/blender/compositor/nodes/COM_TranslateNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TRANSLATENODE_H__
-#define __COM_TRANSLATENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class TranslateNode : public Node {
   TranslateNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ValueNode.h b/source/blender/compositor/nodes/COM_ValueNode.h
index a973649aa46..5179e6828e4 100644
--- a/source/blender/compositor/nodes/COM_ValueNode.h
+++ b/source/blender/compositor/nodes/COM_ValueNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VALUENODE_H__
-#define __COM_VALUENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ValueNode : public Node {
   ValueNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_VectorBlurNode.h b/source/blender/compositor/nodes/COM_VectorBlurNode.h
index 027c241f72d..f370c82a1ee 100644
--- a/source/blender/compositor/nodes/COM_VectorBlurNode.h
+++ b/source/blender/compositor/nodes/COM_VectorBlurNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VECTORBLURNODE_H__
-#define __COM_VECTORBLURNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class VectorBlurNode : public Node {
   VectorBlurNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_VectorCurveNode.h b/source/blender/compositor/nodes/COM_VectorCurveNode.h
index 14bea25cf8d..4d7f92897a1 100644
--- a/source/blender/compositor/nodes/COM_VectorCurveNode.h
+++ b/source/blender/compositor/nodes/COM_VectorCurveNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VECTORCURVENODE_H__
-#define __COM_VECTORCURVENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class VectorCurveNode : public Node {
   VectorCurveNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ViewLevelsNode.h b/source/blender/compositor/nodes/COM_ViewLevelsNode.h
index 851b1ecbd78..0e931fed055 100644
--- a/source/blender/compositor/nodes/COM_ViewLevelsNode.h
+++ b/source/blender/compositor/nodes/COM_ViewLevelsNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VIEWLEVELSNODE_H__
-#define __COM_VIEWLEVELSNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -30,5 +29,3 @@ class ViewLevelsNode : public Node {
   ViewLevelsNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/nodes/COM_ViewerNode.h b/source/blender/compositor/nodes/COM_ViewerNode.h
index 6168623e69c..74758417014 100644
--- a/source/blender/compositor/nodes/COM_ViewerNode.h
+++ b/source/blender/compositor/nodes/COM_ViewerNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VIEWERNODE_H__
-#define __COM_VIEWERNODE_H__
+#pragma once
 
 #include "COM_Node.h"
 #include "DNA_node_types.h"
@@ -30,4 +29,3 @@ class ViewerNode : public Node {
   ViewerNode(bNode *editorNode);
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-#endif
diff --git a/source/blender/compositor/nodes/COM_ZCombineNode.h b/source/blender/compositor/nodes/COM_ZCombineNode.h
index 95e81ca8c8f..ca54fd7fffa 100644
--- a/source/blender/compositor/nodes/COM_ZCombineNode.h
+++ b/source/blender/compositor/nodes/COM_ZCombineNode.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ZCOMBINENODE_H__
-#define __COM_ZCOMBINENODE_H__
+#pragma once
 
 #include "COM_Node.h"
 
@@ -32,5 +31,3 @@ class ZCombineNode : public Node {
   }
   void convertToOperations(NodeConverter &converter, const CompositorContext &context) const;
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
index a4475bc2fbc..de3d6bd1ee0 100644
--- a/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverKeyOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ALPHAOVERKEYOPERATION_H__
-#define __COM_ALPHAOVERKEYOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -36,4 +36,3 @@ class AlphaOverKeyOperation : public MixBaseOperation {
    */
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
index 88fa3d963f4..22d64807512 100644
--- a/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverMixedOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ALPHAOVERMIXEDOPERATION_H__
-#define __COM_ALPHAOVERMIXEDOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -44,4 +44,3 @@ class AlphaOverMixedOperation : public MixBaseOperation {
     this->m_x = x;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
index 4ef5f9d996e..bc5cd07baf8 100644
--- a/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
+++ b/source/blender/compositor/operations/COM_AlphaOverPremultiplyOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ALPHAOVERPREMULTIPLYOPERATION_H__
-#define __COM_ALPHAOVERPREMULTIPLYOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -36,4 +36,3 @@ class AlphaOverPremultiplyOperation : public MixBaseOperation {
    */
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_AntiAliasOperation.h b/source/blender/compositor/operations/COM_AntiAliasOperation.h
index 6141fb92c3f..8600c6dd481 100644
--- a/source/blender/compositor/operations/COM_AntiAliasOperation.h
+++ b/source/blender/compositor/operations/COM_AntiAliasOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ANTIALIASOPERATION_H__
-#define __COM_ANTIALIASOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -56,4 +56,3 @@ class AntiAliasOperation : public NodeOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BilateralBlurOperation.h b/source/blender/compositor/operations/COM_BilateralBlurOperation.h
index c3482005d8c..a54e830459b 100644
--- a/source/blender/compositor/operations/COM_BilateralBlurOperation.h
+++ b/source/blender/compositor/operations/COM_BilateralBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BILATERALBLUROPERATION_H__
-#define __COM_BILATERALBLUROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
 
@@ -55,4 +55,3 @@ class BilateralBlurOperation : public NodeOperation, public QualityStepHelper {
     this->m_data = data;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BlurBaseOperation.h b/source/blender/compositor/operations/COM_BlurBaseOperation.h
index 07893c19126..e4ac8b3c874 100644
--- a/source/blender/compositor/operations/COM_BlurBaseOperation.h
+++ b/source/blender/compositor/operations/COM_BlurBaseOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BLURBASEOPERATION_H__
-#define __COM_BLURBASEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
 
@@ -77,4 +77,3 @@ class BlurBaseOperation : public NodeOperation, public QualityStepHelper {
 
   void determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2]);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BokehBlurOperation.h b/source/blender/compositor/operations/COM_BokehBlurOperation.h
index 4f594f16cb4..e6873a4b70b 100644
--- a/source/blender/compositor/operations/COM_BokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_BokehBlurOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOKEHBLUROPERATION_H__
-#define __COM_BOKEHBLUROPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
@@ -78,4 +77,3 @@ class BokehBlurOperation : public NodeOperation, public QualityStepHelper {
 
   void determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2]);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BokehImageOperation.h b/source/blender/compositor/operations/COM_BokehImageOperation.h
index e907559d6e7..db1d3976d44 100644
--- a/source/blender/compositor/operations/COM_BokehImageOperation.h
+++ b/source/blender/compositor/operations/COM_BokehImageOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOKEHIMAGEOPERATION_H__
-#define __COM_BOKEHIMAGEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -149,4 +149,3 @@ class BokehImageOperation : public NodeOperation {
     this->m_deleteData = true;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BoxMaskOperation.h b/source/blender/compositor/operations/COM_BoxMaskOperation.h
index f770922ee7c..070a7f52b1b 100644
--- a/source/blender/compositor/operations/COM_BoxMaskOperation.h
+++ b/source/blender/compositor/operations/COM_BoxMaskOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BOXMASKOPERATION_H__
-#define __COM_BOXMASKOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class BoxMaskOperation : public NodeOperation {
@@ -63,4 +63,3 @@ class BoxMaskOperation : public NodeOperation {
     this->m_maskType = maskType;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_BrightnessOperation.h b/source/blender/compositor/operations/COM_BrightnessOperation.h
index df6b3ef7b6e..28bd3576201 100644
--- a/source/blender/compositor/operations/COM_BrightnessOperation.h
+++ b/source/blender/compositor/operations/COM_BrightnessOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_BRIGHTNESSOPERATION_H__
-#define __COM_BRIGHTNESSOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class BrightnessOperation : public NodeOperation {
@@ -51,4 +51,3 @@ class BrightnessOperation : public NodeOperation {
 
   void setUsePremultiply(bool use_premultiply);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_CalculateMeanOperation.h b/source/blender/compositor/operations/COM_CalculateMeanOperation.h
index 38d68b2a6fd..aa08555467b 100644
--- a/source/blender/compositor/operations/COM_CalculateMeanOperation.h
+++ b/source/blender/compositor/operations/COM_CalculateMeanOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CALCULATEMEANOPERATION_H__
-#define __COM_CALCULATEMEANOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -67,4 +67,3 @@ class CalculateMeanOperation : public NodeOperation {
  protected:
   void calculateMean(MemoryBuffer *tile);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
index 377276777f0..2ab0e82728d 100644
--- a/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
+++ b/source/blender/compositor/operations/COM_CalculateStandardDeviationOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CALCULATESTANDARDDEVIATIONOPERATION_H__
-#define __COM_CALCULATESTANDARDDEVIATIONOPERATION_H__
+#pragma once
+
 #include "COM_CalculateMeanOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
@@ -40,4 +40,3 @@ class CalculateStandardDeviationOperation : public CalculateMeanOperation {
 
   void *initializeTileData(rcti *rect);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ChangeHSVOperation.h b/source/blender/compositor/operations/COM_ChangeHSVOperation.h
index 3898345f922..b4fa1a3bdd4 100644
--- a/source/blender/compositor/operations/COM_ChangeHSVOperation.h
+++ b/source/blender/compositor/operations/COM_ChangeHSVOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CHANGEHSVOPERATION_H__
-#define __COM_CHANGEHSVOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -45,4 +45,3 @@ class ChangeHSVOperation : public NodeOperation {
    */
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ChannelMatteOperation.h b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
index ad88b41cc91..d4c097fe66e 100644
--- a/source/blender/compositor/operations/COM_ChannelMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_CHANNELMATTEOPERATION_H__
-#define __COM_CHANNELMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -70,4 +70,3 @@ class ChannelMatteOperation : public NodeOperation {
     this->m_matte_channel = custom2;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ChromaMatteOperation.h b/source/blender/compositor/operations/COM_ChromaMatteOperation.h
index 58da839823d..5c4ada8de38 100644
--- a/source/blender/compositor/operations/COM_ChromaMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ChromaMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CHROMAMATTEOPERATION_H__
-#define __COM_CHROMAMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -49,4 +49,3 @@ class ChromaMatteOperation : public NodeOperation {
     this->m_settings = nodeChroma;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
index fd1d51a293b..77ead2f1d26 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
+++ b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORBALANCEASCCDLOPERATION_H__
-#define __COM_COLORBALANCEASCCDLOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -70,4 +70,3 @@ class ColorBalanceASCCDLOperation : public NodeOperation {
     copy_v3_v3(this->m_slope, slope);
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
index a2d4b4cd13a..c34591172b9 100644
--- a/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
+++ b/source/blender/compositor/operations/COM_ColorBalanceLGGOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORBALANCELGGOPERATION_H__
-#define __COM_COLORBALANCELGGOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -70,4 +70,3 @@ class ColorBalanceLGGOperation : public NodeOperation {
     copy_v3_v3(this->m_gamma_inv, gamma_inv);
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorCorrectionOperation.h b/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
index ec9632acc7c..66213eb88a4 100644
--- a/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
+++ b/source/blender/compositor/operations/COM_ColorCorrectionOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORCORRECTIONOPERATION_H__
-#define __COM_COLORCORRECTIONOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class ColorCorrectionOperation : public NodeOperation {
@@ -68,4 +68,3 @@ class ColorCorrectionOperation : public NodeOperation {
     this->m_blueChannelEnabled = enabled;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorCurveOperation.h b/source/blender/compositor/operations/COM_ColorCurveOperation.h
index 7869d1c4a56..65a822508b8 100644
--- a/source/blender/compositor/operations/COM_ColorCurveOperation.h
+++ b/source/blender/compositor/operations/COM_ColorCurveOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORCURVEOPERATION_H__
-#define __COM_COLORCURVEOPERATION_H__
+#pragma once
+
 #include "COM_CurveBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_color_types.h"
@@ -88,5 +88,3 @@ class ConstantLevelColorCurveOperation : public CurveBaseOperation {
     copy_v3_v3(this->m_white, white);
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorMatteOperation.h b/source/blender/compositor/operations/COM_ColorMatteOperation.h
index 7e8a0e295e1..bb00c344606 100644
--- a/source/blender/compositor/operations/COM_ColorMatteOperation.h
+++ b/source/blender/compositor/operations/COM_ColorMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORMATTEOPERATION_H__
-#define __COM_COLORMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -49,4 +49,3 @@ class ColorMatteOperation : public NodeOperation {
     this->m_settings = nodeChroma;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorRampOperation.h b/source/blender/compositor/operations/COM_ColorRampOperation.h
index 3e2acda1d10..b4253a3f074 100644
--- a/source/blender/compositor/operations/COM_ColorRampOperation.h
+++ b/source/blender/compositor/operations/COM_ColorRampOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORRAMPOPERATION_H__
-#define __COM_COLORRAMPOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_texture_types.h"
 
@@ -52,4 +52,3 @@ class ColorRampOperation : public NodeOperation {
     this->m_colorBand = colorBand;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ColorSpillOperation.h b/source/blender/compositor/operations/COM_ColorSpillOperation.h
index 73f4f5b045d..560d198693f 100644
--- a/source/blender/compositor/operations/COM_ColorSpillOperation.h
+++ b/source/blender/compositor/operations/COM_ColorSpillOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COLORSPILLOPERATION_H__
-#define __COM_COLORSPILLOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -64,5 +64,3 @@ class ColorSpillOperation : public NodeOperation {
 
   float calculateMapValue(float fac, float *input);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_CompositorOperation.h b/source/blender/compositor/operations/COM_CompositorOperation.h
index 8db8fe00d3c..3633bfd511c 100644
--- a/source/blender/compositor/operations/COM_CompositorOperation.h
+++ b/source/blender/compositor/operations/COM_CompositorOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_COMPOSITOROPERATION_H__
-#define __COM_COMPOSITOROPERATION_H__
+#pragma once
+
 #include "BLI_rect.h"
 #include "BLI_string.h"
 #include "COM_NodeOperation.h"
@@ -123,4 +123,3 @@ class CompositorOperation : public NodeOperation {
     this->m_active = active;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
index 7cc39a47dd0..8fce5ef3e1a 100644
--- a/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertColorProfileOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVERTCOLORPROFILEOPERATION_H__
-#define __COM_CONVERTCOLORPROFILEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -80,4 +80,3 @@ class ConvertColorProfileOperation : public NodeOperation {
     this->m_predivided = predivided;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
index 7c3e0ed9738..3babcfe4dc3 100644
--- a/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertDepthToRadiusOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVERTDEPTHTORADIUSOPERATION_H__
-#define __COM_CONVERTDEPTHTORADIUSOPERATION_H__
+#pragma once
+
 #include "COM_FastGaussianBlurOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_object_types.h"
@@ -81,4 +81,3 @@ class ConvertDepthToRadiusOperation : public NodeOperation {
     this->m_blurPostOperation = operation;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ConvertOperation.h b/source/blender/compositor/operations/COM_ConvertOperation.h
index a4cf05372a5..ca026528a38 100644
--- a/source/blender/compositor/operations/COM_ConvertOperation.h
+++ b/source/blender/compositor/operations/COM_ConvertOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVERTOPERATION_H__
-#define __COM_CONVERTOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -183,5 +182,3 @@ class CombineChannelsOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
index 17509b018bf..ab4b8a1dad1 100644
--- a/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
+++ b/source/blender/compositor/operations/COM_ConvolutionEdgeFilterOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVOLUTIONEDGEFILTEROPERATION_H__
-#define __COM_CONVOLUTIONEDGEFILTEROPERATION_H__
+#pragma once
 
 #include "COM_ConvolutionFilterOperation.h"
 
@@ -26,5 +25,3 @@ class ConvolutionEdgeFilterOperation : public ConvolutionFilterOperation {
   ConvolutionEdgeFilterOperation();
   void executePixel(float output[4], int x, int y, void *data);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
index 78db5a5ae9d..d178b0a7418 100644
--- a/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
+++ b/source/blender/compositor/operations/COM_ConvolutionFilterOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CONVOLUTIONFILTEROPERATION_H__
-#define __COM_CONVOLUTIONFILTEROPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -43,5 +42,3 @@ class ConvolutionFilterOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_CropOperation.h b/source/blender/compositor/operations/COM_CropOperation.h
index 36c18d29e92..f20664f0501 100644
--- a/source/blender/compositor/operations/COM_CropOperation.h
+++ b/source/blender/compositor/operations/COM_CropOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CROPOPERATION_H__
-#define __COM_CROPOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -64,4 +63,3 @@ class CropImageOperation : public CropBaseOperation {
   void determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2]);
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_CryptomatteOperation.h b/source/blender/compositor/operations/COM_CryptomatteOperation.h
index 459d8b65f12..8c5a3134720 100644
--- a/source/blender/compositor/operations/COM_CryptomatteOperation.h
+++ b/source/blender/compositor/operations/COM_CryptomatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2018, Blender Foundation.
  */
 
-#ifndef __COM_CRYPTOMATTEOPERATION_H__
-#define __COM_CRYPTOMATTEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class CryptomatteOperation : public NodeOperation {
@@ -34,4 +34,3 @@ class CryptomatteOperation : public NodeOperation {
 
   void addObjectIndex(float objectIndex);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_CurveBaseOperation.h b/source/blender/compositor/operations/COM_CurveBaseOperation.h
index f42ce3c366f..63e667cfe12 100644
--- a/source/blender/compositor/operations/COM_CurveBaseOperation.h
+++ b/source/blender/compositor/operations/COM_CurveBaseOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_CURVEBASEOPERATION_H__
-#define __COM_CURVEBASEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_color_types.h"
 
@@ -40,4 +40,3 @@ class CurveBaseOperation : public NodeOperation {
 
   void setCurveMapping(CurveMapping *mapping);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DenoiseOperation.h b/source/blender/compositor/operations/COM_DenoiseOperation.h
index 6a53eead65c..5af6e16c958 100644
--- a/source/blender/compositor/operations/COM_DenoiseOperation.h
+++ b/source/blender/compositor/operations/COM_DenoiseOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2019, Blender Foundation.
  */
 
-#ifndef __COM_DENOISEOPERATION_H__
-#define __COM_DENOISEOPERATION_H__
+#pragma once
 
 #include "COM_SingleThreadedOperation.h"
 #include "DNA_node_types.h"
@@ -65,5 +64,3 @@ class DenoiseOperation : public SingleThreadedOperation {
 
   MemoryBuffer *createMemoryBuffer(rcti *rect);
 };
-
-#endif /* __COM_DENOISEOPERATION_H__ */
diff --git a/source/blender/compositor/operations/COM_DespeckleOperation.h b/source/blender/compositor/operations/COM_DespeckleOperation.h
index 280948b7fbe..af37c276bd2 100644
--- a/source/blender/compositor/operations/COM_DespeckleOperation.h
+++ b/source/blender/compositor/operations/COM_DespeckleOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DESPECKLEOPERATION_H__
-#define __COM_DESPECKLEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class DespeckleOperation : public NodeOperation {
@@ -51,5 +51,3 @@ class DespeckleOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_DifferenceMatteOperation.h b/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
index e96e212e511..beaa4400712 100644
--- a/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DifferenceMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DIFFERENCEMATTEOPERATION_H__
-#define __COM_DIFFERENCEMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -49,4 +49,3 @@ class DifferenceMatteOperation : public NodeOperation {
     this->m_settings = nodeChroma;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DilateErodeOperation.h b/source/blender/compositor/operations/COM_DilateErodeOperation.h
index bd7e0938c58..95a799ab648 100644
--- a/source/blender/compositor/operations/COM_DilateErodeOperation.h
+++ b/source/blender/compositor/operations/COM_DilateErodeOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DILATEERODEOPERATION_H__
-#define __COM_DILATEERODEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class DilateErodeThresholdOperation : public NodeOperation {
@@ -180,5 +180,3 @@ class ErodeStepOperation : public DilateStepOperation {
 
   void *initializeTileData(rcti *rect);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_DirectionalBlurOperation.h b/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
index f8b7bab010b..57fc0bb7fa3 100644
--- a/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
+++ b/source/blender/compositor/operations/COM_DirectionalBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DIRECTIONALBLUROPERATION_H__
-#define __COM_DIRECTIONALBLUROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
 
@@ -64,4 +64,3 @@ class DirectionalBlurOperation : public NodeOperation, public QualityStepHelper
                      list<cl_mem> *clMemToCleanUp,
                      list<cl_kernel> *clKernelsToCleanUp);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DisplaceOperation.h b/source/blender/compositor/operations/COM_DisplaceOperation.h
index 4e44572fcf2..ee06bf320a6 100644
--- a/source/blender/compositor/operations/COM_DisplaceOperation.h
+++ b/source/blender/compositor/operations/COM_DisplaceOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DISPLACEOPERATION_H__
-#define __COM_DISPLACEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class DisplaceOperation : public NodeOperation {
@@ -64,4 +64,3 @@ class DisplaceOperation : public NodeOperation {
   bool read_displacement(
       float x, float y, float xscale, float yscale, const float origin[2], float &r_u, float &r_v);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
index 6d4d6047137..6930985b0e5 100644
--- a/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
+++ b/source/blender/compositor/operations/COM_DisplaceSimpleOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_DISPLACESIMPLEOPERATION_H__
-#define __COM_DISPLACESIMPLEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class DisplaceSimpleOperation : public NodeOperation {
@@ -58,4 +58,3 @@ class DisplaceSimpleOperation : public NodeOperation {
    */
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
index c64c6da8d24..d99ab262c18 100644
--- a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DISTANCERGBMATTEOPERATION_H__
-#define __COM_DISTANCERGBMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -51,4 +51,3 @@ class DistanceRGBMatteOperation : public NodeOperation {
     this->m_settings = nodeChroma;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
index 1cb477bc05d..e9b2cda6251 100644
--- a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
+++ b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DISTANCEYCCMATTEOPERATION_H__
-#define __COM_DISTANCEYCCMATTEOPERATION_H__
+#pragma once
+
 #include "COM_DistanceRGBMatteOperation.h"
 #include "COM_MixOperation.h"
 
@@ -35,4 +35,3 @@ class DistanceYCCMatteOperation : public DistanceRGBMatteOperation {
    */
   DistanceYCCMatteOperation();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_DotproductOperation.h b/source/blender/compositor/operations/COM_DotproductOperation.h
index 9ef9753f4c9..63b735ce30f 100644
--- a/source/blender/compositor/operations/COM_DotproductOperation.h
+++ b/source/blender/compositor/operations/COM_DotproductOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DOTPRODUCTOPERATION_H__
-#define __COM_DOTPRODUCTOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -33,5 +32,3 @@ class DotproductOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
index 40cfa370cb7..0c77e83daec 100644
--- a/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
+++ b/source/blender/compositor/operations/COM_DoubleEdgeMaskOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_DOUBLEEDGEMASKOPERATION_H__
-#define __COM_DOUBLEEDGEMASKOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class DoubleEdgeMaskOperation : public NodeOperation {
@@ -65,4 +65,3 @@ class DoubleEdgeMaskOperation : public NodeOperation {
     this->m_keepInside = keepInside;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_EllipseMaskOperation.h b/source/blender/compositor/operations/COM_EllipseMaskOperation.h
index b73a35a5452..2e6b1f782a1 100644
--- a/source/blender/compositor/operations/COM_EllipseMaskOperation.h
+++ b/source/blender/compositor/operations/COM_EllipseMaskOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ELLIPSEMASKOPERATION_H__
-#define __COM_ELLIPSEMASKOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class EllipseMaskOperation : public NodeOperation {
@@ -63,4 +63,3 @@ class EllipseMaskOperation : public NodeOperation {
     this->m_maskType = maskType;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
index 22f9a6f9cf2..6ab6474c20a 100644
--- a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
+++ b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_FASTGAUSSIANBLUROPERATION_H__
-#define __COM_FASTGAUSSIANBLUROPERATION_H__
+#pragma once
 
 #include "COM_BlurBaseOperation.h"
 #include "DNA_node_types.h"
@@ -80,5 +79,3 @@ class FastGaussianBlurValueOperation : public NodeOperation {
     this->m_overlay = overlay;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_FlipOperation.h b/source/blender/compositor/operations/COM_FlipOperation.h
index 2d00c50dc8a..711b51261e6 100644
--- a/source/blender/compositor/operations/COM_FlipOperation.h
+++ b/source/blender/compositor/operations/COM_FlipOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_FLIPOPERATION_H__
-#define __COM_FLIPOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -45,5 +44,3 @@ class FlipOperation : public NodeOperation {
     this->m_flipY = flipY;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_GammaCorrectOperation.h b/source/blender/compositor/operations/COM_GammaCorrectOperation.h
index 26e31df880f..be57e279ac8 100644
--- a/source/blender/compositor/operations/COM_GammaCorrectOperation.h
+++ b/source/blender/compositor/operations/COM_GammaCorrectOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAMMACORRECTOPERATION_H__
-#define __COM_GAMMACORRECTOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class GammaCorrectOperation : public NodeOperation {
@@ -71,5 +71,3 @@ class GammaUncorrectOperation : public NodeOperation {
    */
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_GammaOperation.h b/source/blender/compositor/operations/COM_GammaOperation.h
index ba0b84db931..493fdb1f889 100644
--- a/source/blender/compositor/operations/COM_GammaOperation.h
+++ b/source/blender/compositor/operations/COM_GammaOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAMMAOPERATION_H__
-#define __COM_GAMMAOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class GammaOperation : public NodeOperation {
@@ -46,4 +46,3 @@ class GammaOperation : public NodeOperation {
    */
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
index 9de75ff53a7..a8e1ddfb885 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianAlphaXBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAUSSIANALPHAXBLUROPERATION_H__
-#define __COM_GAUSSIANALPHAXBLUROPERATION_H__
+#pragma once
+
 #include "COM_BlurBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -65,4 +65,3 @@ class GaussianAlphaXBlurOperation : public BlurBaseOperation {
     this->m_falloff = falloff;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
index 44689922bfc..df34f15fccc 100644
--- a/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianAlphaYBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAUSSIANALPHAYBLUROPERATION_H__
-#define __COM_GAUSSIANALPHAYBLUROPERATION_H__
+#pragma once
+
 #include "COM_BlurBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -65,4 +65,3 @@ class GaussianAlphaYBlurOperation : public BlurBaseOperation {
     this->m_falloff = falloff;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
index 3aa380853bd..b4b5c0e8b2f 100644
--- a/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianBokehBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAUSSIANBOKEHBLUROPERATION_H__
-#define __COM_GAUSSIANBOKEHBLUROPERATION_H__
+#pragma once
+
 #include "COM_BlurBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
@@ -75,5 +75,3 @@ class GaussianBlurReferenceOperation : public BlurBaseOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_GaussianXBlurOperation.h b/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
index c5c08df8ce7..1bd6ef20a48 100644
--- a/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianXBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAUSSIANXBLUROPERATION_H__
-#define __COM_GAUSSIANXBLUROPERATION_H__
+#pragma once
+
 #include "COM_BlurBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -65,4 +65,3 @@ class GaussianXBlurOperation : public BlurBaseOperation {
     this->setOpenCL(m_data.sizex >= 128);
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GaussianYBlurOperation.h b/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
index 92154aa7518..a9af28791f8 100644
--- a/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
+++ b/source/blender/compositor/operations/COM_GaussianYBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GAUSSIANYBLUROPERATION_H__
-#define __COM_GAUSSIANYBLUROPERATION_H__
+#pragma once
+
 #include "COM_BlurBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -65,4 +65,3 @@ class GaussianYBlurOperation : public BlurBaseOperation {
     this->setOpenCL(m_data.sizex >= 128);
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareBaseOperation.h b/source/blender/compositor/operations/COM_GlareBaseOperation.h
index ba2b9a8f4b8..aabb76f5cf0 100644
--- a/source/blender/compositor/operations/COM_GlareBaseOperation.h
+++ b/source/blender/compositor/operations/COM_GlareBaseOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLAREBASEOPERATION_H__
-#define __COM_GLAREBASEOPERATION_H__
+#pragma once
 
 #include "COM_SingleThreadedOperation.h"
 #include "DNA_node_types.h"
@@ -74,4 +73,3 @@ class GlareBaseOperation : public SingleThreadedOperation {
 
   MemoryBuffer *createMemoryBuffer(rcti *rect);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareFogGlowOperation.h b/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
index dae0b714e56..9084f27052e 100644
--- a/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
+++ b/source/blender/compositor/operations/COM_GlareFogGlowOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLAREFOGGLOWOPERATION_H__
-#define __COM_GLAREFOGGLOWOPERATION_H__
+#pragma once
+
 #include "COM_GlareBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
@@ -31,4 +31,3 @@ class GlareFogGlowOperation : public GlareBaseOperation {
  protected:
   void generateGlare(float *data, MemoryBuffer *inputTile, NodeGlare *settings);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareGhostOperation.h b/source/blender/compositor/operations/COM_GlareGhostOperation.h
index c0b41762c8a..8ecf8da3385 100644
--- a/source/blender/compositor/operations/COM_GlareGhostOperation.h
+++ b/source/blender/compositor/operations/COM_GlareGhostOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLAREGHOSTOPERATION_H__
-#define __COM_GLAREGHOSTOPERATION_H__
+#pragma once
+
 #include "COM_GlareBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
@@ -31,4 +31,3 @@ class GlareGhostOperation : public GlareBaseOperation {
  protected:
   void generateGlare(float *data, MemoryBuffer *inputTile, NodeGlare *settings);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
index b6e2e499f64..0f5913fcef9 100644
--- a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
+++ b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLARESIMPLESTAROPERATION_H__
-#define __COM_GLARESIMPLESTAROPERATION_H__
+#pragma once
+
 #include "COM_GlareBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
@@ -31,4 +31,3 @@ class GlareSimpleStarOperation : public GlareBaseOperation {
  protected:
   void generateGlare(float *data, MemoryBuffer *inputTile, NodeGlare *settings);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareStreaksOperation.h b/source/blender/compositor/operations/COM_GlareStreaksOperation.h
index 9f137f90b71..df31981170d 100644
--- a/source/blender/compositor/operations/COM_GlareStreaksOperation.h
+++ b/source/blender/compositor/operations/COM_GlareStreaksOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLARESTREAKSOPERATION_H__
-#define __COM_GLARESTREAKSOPERATION_H__
+#pragma once
+
 #include "COM_GlareBaseOperation.h"
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
@@ -31,4 +31,3 @@ class GlareStreaksOperation : public GlareBaseOperation {
  protected:
   void generateGlare(float *data, MemoryBuffer *inputTile, NodeGlare *settings);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_GlareThresholdOperation.h b/source/blender/compositor/operations/COM_GlareThresholdOperation.h
index 385111cdf0b..e4ac36f2053 100644
--- a/source/blender/compositor/operations/COM_GlareThresholdOperation.h
+++ b/source/blender/compositor/operations/COM_GlareThresholdOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_GLARETHRESHOLDOPERATION_H__
-#define __COM_GLARETHRESHOLDOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_light_types.h"
 
@@ -58,4 +58,3 @@ class GlareThresholdOperation : public NodeOperation {
 
   void determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2]);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
index 0624a5c022f..f29a932d7f8 100644
--- a/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
+++ b/source/blender/compositor/operations/COM_HueSaturationValueCorrectOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_HUESATURATIONVALUECORRECTOPERATION_H__
-#define __COM_HUESATURATIONVALUECORRECTOPERATION_H__
+#pragma once
+
 #include "COM_CurveBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -46,4 +46,3 @@ class HueSaturationValueCorrectOperation : public CurveBaseOperation {
    */
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_IDMaskOperation.h b/source/blender/compositor/operations/COM_IDMaskOperation.h
index b3a40106b9d..abd2a719371 100644
--- a/source/blender/compositor/operations/COM_IDMaskOperation.h
+++ b/source/blender/compositor/operations/COM_IDMaskOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_IDMASKOPERATION_H__
-#define __COM_IDMASKOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class IDMaskOperation : public NodeOperation {
@@ -35,4 +35,3 @@ class IDMaskOperation : public NodeOperation {
     this->m_objectIndex = objectIndex;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ImageOperation.h b/source/blender/compositor/operations/COM_ImageOperation.h
index 3e081ee0000..fcffdc7aae9 100644
--- a/source/blender/compositor/operations/COM_ImageOperation.h
+++ b/source/blender/compositor/operations/COM_ImageOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_IMAGEOPERATION_H__
-#define __COM_IMAGEOPERATION_H__
+#pragma once
 
 #include "BKE_image.h"
 #include "BLI_listbase.h"
@@ -103,4 +102,3 @@ class ImageDepthOperation : public BaseImageOperation {
   ImageDepthOperation();
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_InpaintOperation.h b/source/blender/compositor/operations/COM_InpaintOperation.h
index 2fef7c590ea..12523d5f064 100644
--- a/source/blender/compositor/operations/COM_InpaintOperation.h
+++ b/source/blender/compositor/operations/COM_InpaintOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_INPAINTOPERATION_H__
-#define __COM_INPAINTOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class InpaintSimpleOperation : public NodeOperation {
@@ -72,5 +72,3 @@ class InpaintSimpleOperation : public NodeOperation {
   bool next_pixel(int &x, int &y, int &curr, int iters);
   void pix_step(int x, int y);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_InvertOperation.h b/source/blender/compositor/operations/COM_InvertOperation.h
index 39161455a76..5399122ab62 100644
--- a/source/blender/compositor/operations/COM_InvertOperation.h
+++ b/source/blender/compositor/operations/COM_InvertOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_INVERTOPERATION_H__
-#define __COM_INVERTOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class InvertOperation : public NodeOperation {
@@ -58,4 +58,3 @@ class InvertOperation : public NodeOperation {
     this->m_alpha = alpha;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_KeyingBlurOperation.h b/source/blender/compositor/operations/COM_KeyingBlurOperation.h
index 0e45f1c32b8..6a2b43a6cd4 100644
--- a/source/blender/compositor/operations/COM_KeyingBlurOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingBlurOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGBLUROPERATION_H__
-#define __COM_KEYINGBLUROPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -54,5 +53,3 @@ class KeyingBlurOperation : public NodeOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_KeyingClipOperation.h b/source/blender/compositor/operations/COM_KeyingClipOperation.h
index 8237c443cf2..9d876966e96 100644
--- a/source/blender/compositor/operations/COM_KeyingClipOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingClipOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGCLIPOPERATION_H__
-#define __COM_KEYINGCLIPOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -68,5 +67,3 @@ class KeyingClipOperation : public NodeOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_KeyingDespillOperation.h b/source/blender/compositor/operations/COM_KeyingDespillOperation.h
index eb43a478e50..32df7939c43 100644
--- a/source/blender/compositor/operations/COM_KeyingDespillOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingDespillOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGDESPILLOPERATION_H__
-#define __COM_KEYINGDESPILLOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -48,5 +47,3 @@ class KeyingDespillOperation : public NodeOperation {
 
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_KeyingOperation.h b/source/blender/compositor/operations/COM_KeyingOperation.h
index 81d23e76b2a..946d7bdc1f7 100644
--- a/source/blender/compositor/operations/COM_KeyingOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGOPERATION_H__
-#define __COM_KEYINGOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -48,5 +47,3 @@ class KeyingOperation : public NodeOperation {
 
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_KeyingScreenOperation.h b/source/blender/compositor/operations/COM_KeyingScreenOperation.h
index 593e902117b..595301bb951 100644
--- a/source/blender/compositor/operations/COM_KeyingScreenOperation.h
+++ b/source/blender/compositor/operations/COM_KeyingScreenOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_KEYINGSCREENOPERATION_H__
-#define __COM_KEYINGSCREENOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -83,5 +82,3 @@ class KeyingScreenOperation : public NodeOperation {
 
   void executePixel(float output[4], int x, int y, void *data);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_LuminanceMatteOperation.h b/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
index 2df7847f7ff..2b77b3cde85 100644
--- a/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
+++ b/source/blender/compositor/operations/COM_LuminanceMatteOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_LUMINANCEMATTEOPERATION_H__
-#define __COM_LUMINANCEMATTEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -48,4 +48,3 @@ class LuminanceMatteOperation : public NodeOperation {
     this->m_settings = nodeChroma;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_MapRangeOperation.h b/source/blender/compositor/operations/COM_MapRangeOperation.h
index 55b5cc7453c..8656b5539a0 100644
--- a/source/blender/compositor/operations/COM_MapRangeOperation.h
+++ b/source/blender/compositor/operations/COM_MapRangeOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_MAPRANGEOPERATION_H__
-#define __COM_MAPRANGEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_texture_types.h"
 
@@ -67,4 +67,3 @@ class MapRangeOperation : public NodeOperation {
     this->m_useClamp = value;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_MapUVOperation.h b/source/blender/compositor/operations/COM_MapUVOperation.h
index 64e17b180b4..639b61847c4 100644
--- a/source/blender/compositor/operations/COM_MapUVOperation.h
+++ b/source/blender/compositor/operations/COM_MapUVOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MAPUVOPERATION_H__
-#define __COM_MAPUVOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class MapUVOperation : public NodeOperation {
@@ -65,5 +65,3 @@ class MapUVOperation : public NodeOperation {
  private:
   bool read_uv(float x, float y, float &r_u, float &r_v, float &r_alpha);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_MapValueOperation.h b/source/blender/compositor/operations/COM_MapValueOperation.h
index 81071d78cd7..cdbc98bd2a5 100644
--- a/source/blender/compositor/operations/COM_MapValueOperation.h
+++ b/source/blender/compositor/operations/COM_MapValueOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MAPVALUEOPERATION_H__
-#define __COM_MAPVALUEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_texture_types.h"
 
@@ -62,4 +62,3 @@ class MapValueOperation : public NodeOperation {
     this->m_settings = settings;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_MaskOperation.h b/source/blender/compositor/operations/COM_MaskOperation.h
index 45363ea5220..eba14d10373 100644
--- a/source/blender/compositor/operations/COM_MaskOperation.h
+++ b/source/blender/compositor/operations/COM_MaskOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_MASKOPERATION_H__
-#define __COM_MASKOPERATION_H__
+#pragma once
 
 #include "BLI_listbase.h"
 #include "COM_NodeOperation.h"
@@ -94,5 +93,3 @@ class MaskOperation : public NodeOperation {
 
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_MathBaseOperation.h b/source/blender/compositor/operations/COM_MathBaseOperation.h
index 199b59d8649..f844f668f08 100644
--- a/source/blender/compositor/operations/COM_MathBaseOperation.h
+++ b/source/blender/compositor/operations/COM_MathBaseOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MATHBASEOPERATION_H__
-#define __COM_MATHBASEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -372,4 +372,3 @@ class MathSmoothMaxOperation : public MathBaseOperation {
   }
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_MixOperation.h b/source/blender/compositor/operations/COM_MixOperation.h
index cea0e59b541..e597e8af63a 100644
--- a/source/blender/compositor/operations/COM_MixOperation.h
+++ b/source/blender/compositor/operations/COM_MixOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MIXOPERATION_H__
-#define __COM_MIXOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -193,5 +193,3 @@ class MixValueOperation : public MixBaseOperation {
   MixValueOperation();
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
index 8a95293b470..449e5d01a37 100644
--- a/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
+++ b/source/blender/compositor/operations/COM_MovieClipAttributeOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MOVIECLIPATTRIBUTEOPERATION_H__
-#define __COM_MOVIECLIPATTRIBUTEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_movieclip_types.h"
 
@@ -70,4 +70,3 @@ class MovieClipAttributeOperation : public NodeOperation {
     this->m_invert = invert;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_MovieClipOperation.h b/source/blender/compositor/operations/COM_MovieClipOperation.h
index 7ae85eac25e..8897f85f77c 100644
--- a/source/blender/compositor/operations/COM_MovieClipOperation.h
+++ b/source/blender/compositor/operations/COM_MovieClipOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MOVIECLIPOPERATION_H__
-#define __COM_MOVIECLIPOPERATION_H__
+#pragma once
 
 #include "BLI_listbase.h"
 #include "COM_NodeOperation.h"
@@ -77,5 +76,3 @@ class MovieClipAlphaOperation : public MovieClipBaseOperation {
   MovieClipAlphaOperation();
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_MovieDistortionOperation.h b/source/blender/compositor/operations/COM_MovieDistortionOperation.h
index 799c6385a10..f11ce485f97 100644
--- a/source/blender/compositor/operations/COM_MovieDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_MovieDistortionOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MOVIEDISTORTIONOPERATION_H__
-#define __COM_MOVIEDISTORTIONOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 #include "DNA_movieclip_types.h"
@@ -58,5 +57,3 @@ class MovieDistortionOperation : public NodeOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_MultilayerImageOperation.h b/source/blender/compositor/operations/COM_MultilayerImageOperation.h
index 10c475ced4d..adfcc975ade 100644
--- a/source/blender/compositor/operations/COM_MultilayerImageOperation.h
+++ b/source/blender/compositor/operations/COM_MultilayerImageOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_MULTILAYERIMAGEOPERATION_H__
-#define __COM_MULTILAYERIMAGEOPERATION_H__
+#pragma once
 
 #include "COM_ImageOperation.h"
 
@@ -67,5 +66,3 @@ class MultilayerVectorOperation : public MultilayerBaseOperation {
   }
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_NormalizeOperation.h b/source/blender/compositor/operations/COM_NormalizeOperation.h
index a38e79bb0ab..58c03e633e2 100644
--- a/source/blender/compositor/operations/COM_NormalizeOperation.h
+++ b/source/blender/compositor/operations/COM_NormalizeOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_NORMALIZEOPERATION_H__
-#define __COM_NORMALIZEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -63,5 +63,3 @@ class NormalizeOperation : public NodeOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
index 609448c0bcb..1deaf121173 100644
--- a/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
+++ b/source/blender/compositor/operations/COM_OutputFileMultiViewOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2015, Blender Foundation.
  */
 
-#ifndef __COM_OUTPUTFILEMULTIVIEWOPERATION_H__
-#define __COM_OUTPUTFILEMULTIVIEWOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_OutputFileOperation.h"
 
@@ -77,5 +77,3 @@ class OutputStereoOperation : public OutputSingleLayerOperation {
   void *get_handle(const char *filename);
   void deinitExecution();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_OutputFileOperation.h b/source/blender/compositor/operations/COM_OutputFileOperation.h
index d00d1d0dc0d..b2454e17e3f 100644
--- a/source/blender/compositor/operations/COM_OutputFileOperation.h
+++ b/source/blender/compositor/operations/COM_OutputFileOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_OUTPUTFILEOPERATION_H__
-#define __COM_OUTPUTFILEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 #include "BLI_path_util.h"
@@ -140,5 +140,3 @@ void free_exr_channels(void *exrhandle,
                        const char *layerName,
                        const DataType datatype);
 int get_datatype_size(DataType datatype);
-
-#endif
diff --git a/source/blender/compositor/operations/COM_PixelateOperation.h b/source/blender/compositor/operations/COM_PixelateOperation.h
index 86aab26ee00..c7595756d39 100644
--- a/source/blender/compositor/operations/COM_PixelateOperation.h
+++ b/source/blender/compositor/operations/COM_PixelateOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_PIXELATEOPERATION_H__
-#define __COM_PIXELATEOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -61,5 +60,3 @@ class PixelateOperation : public NodeOperation {
    */
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
index 444616e13f2..1e892465db8 100644
--- a/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneCornerPinOperation.h
@@ -15,8 +15,7 @@
  * Copyright 2014, Blender Foundation.
  */
 
-#ifndef __COM_PLANECORNERPINOPERATION_H__
-#define __COM_PLANECORNERPINOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -59,5 +58,3 @@ class PlaneCornerPinWarpImageOperation : public PlaneDistortWarpImageOperation {
                                         ReadBufferOperation *readOperation,
                                         rcti *output);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
index 35e7745cb5d..6cc9456c13f 100644
--- a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_PLANEDISTORTCOMMONOPERATION_H__
-#define __COM_PLANEDISTORTCOMMONOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -97,5 +96,3 @@ class PlaneDistortMaskOperation : public NodeOperation {
     this->m_motion_blur_shutter = shutter;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_PlaneTrackOperation.h b/source/blender/compositor/operations/COM_PlaneTrackOperation.h
index 875c8ce8fa0..fc0a0873d5f 100644
--- a/source/blender/compositor/operations/COM_PlaneTrackOperation.h
+++ b/source/blender/compositor/operations/COM_PlaneTrackOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2013, Blender Foundation.
  */
 
-#ifndef __COM_PLANETRACKOPERATION_H__
-#define __COM_PLANETRACKOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -96,5 +95,3 @@ class PlaneTrackWarpImageOperation : public PlaneDistortWarpImageOperation,
     NodeOperation::determineResolution(temp, resolution);
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_PreviewOperation.h b/source/blender/compositor/operations/COM_PreviewOperation.h
index f31bd533971..eca50c5cda4 100644
--- a/source/blender/compositor/operations/COM_PreviewOperation.h
+++ b/source/blender/compositor/operations/COM_PreviewOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_PREVIEWOPERATION_H__
-#define __COM_PREVIEWOPERATION_H__
+#pragma once
+
 #include "BKE_global.h"
 #include "BLI_rect.h"
 #include "COM_NodeOperation.h"
@@ -61,4 +61,3 @@ class PreviewOperation : public NodeOperation {
     return true;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
index 3574f40e3bb..b9290fa1548 100644
--- a/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_ProjectorLensDistortionOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_PROJECTORLENSDISTORTIONOPERATION_H__
-#define __COM_PROJECTORLENSDISTORTIONOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -58,4 +58,3 @@ class ProjectorLensDistortionOperation : public NodeOperation {
 
   void updateDispersion();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_QualityStepHelper.h b/source/blender/compositor/operations/COM_QualityStepHelper.h
index 0814f5cdb4c..e437613fb29 100644
--- a/source/blender/compositor/operations/COM_QualityStepHelper.h
+++ b/source/blender/compositor/operations/COM_QualityStepHelper.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_QUALITYSTEPHELPER_H__
-#define __COM_QUALITYSTEPHELPER_H__
+#pragma once
+
 #include "COM_defines.h"
 
 typedef enum QualityHelper {
@@ -54,4 +54,3 @@ class QualityStepHelper {
     this->m_quality = quality;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ReadBufferOperation.h b/source/blender/compositor/operations/COM_ReadBufferOperation.h
index 60d064a5582..e59cb5449d6 100644
--- a/source/blender/compositor/operations/COM_ReadBufferOperation.h
+++ b/source/blender/compositor/operations/COM_ReadBufferOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_READBUFFEROPERATION_H__
-#define __COM_READBUFFEROPERATION_H__
+#pragma once
 
 #include "COM_MemoryBuffer.h"
 #include "COM_MemoryProxy.h"
@@ -73,5 +72,3 @@ class ReadBufferOperation : public NodeOperation {
   void readResolutionFromWriteBuffer();
   void updateMemoryBuffer();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_RenderLayersProg.h b/source/blender/compositor/operations/COM_RenderLayersProg.h
index 6f84eae3252..74664c128c0 100644
--- a/source/blender/compositor/operations/COM_RenderLayersProg.h
+++ b/source/blender/compositor/operations/COM_RenderLayersProg.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_RENDERLAYERSPROG_H__
-#define __COM_RENDERLAYERSPROG_H__
+#pragma once
 
 #include "BLI_listbase.h"
 #include "BLI_utildefines.h"
@@ -150,5 +149,3 @@ class RenderLayersDepthProg : public RenderLayersProg {
   }
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_RotateOperation.h b/source/blender/compositor/operations/COM_RotateOperation.h
index 46bdc68161e..0ef4466671a 100644
--- a/source/blender/compositor/operations/COM_RotateOperation.h
+++ b/source/blender/compositor/operations/COM_RotateOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ROTATEOPERATION_H__
-#define __COM_ROTATEOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -47,5 +46,3 @@ class RotateOperation : public NodeOperation {
 
   void ensureDegree();
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_ScaleOperation.h b/source/blender/compositor/operations/COM_ScaleOperation.h
index 28e32ff8606..f28b8237485 100644
--- a/source/blender/compositor/operations/COM_ScaleOperation.h
+++ b/source/blender/compositor/operations/COM_ScaleOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SCALEOPERATION_H__
-#define __COM_SCALEOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -129,5 +128,3 @@ class ScaleFixedSizeOperation : public BaseScaleOperation {
     this->m_offsetY = y;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
index c9db5bc88b8..f9982d94f60 100644
--- a/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
+++ b/source/blender/compositor/operations/COM_ScreenLensDistortionOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SCREENLENSDISTORTIONOPERATION_H__
-#define __COM_SCREENLENSDISTORTIONOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -96,4 +96,3 @@ class ScreenLensDistortionOperation : public NodeOperation {
                   float sum[4],
                   int count[3]) const;
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SetAlphaOperation.h b/source/blender/compositor/operations/COM_SetAlphaOperation.h
index 24f80b71eae..a84fb0f2228 100644
--- a/source/blender/compositor/operations/COM_SetAlphaOperation.h
+++ b/source/blender/compositor/operations/COM_SetAlphaOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETALPHAOPERATION_H__
-#define __COM_SETALPHAOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -43,4 +43,3 @@ class SetAlphaOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SetColorOperation.h b/source/blender/compositor/operations/COM_SetColorOperation.h
index d16d3806864..0723ac8a8e4 100644
--- a/source/blender/compositor/operations/COM_SetColorOperation.h
+++ b/source/blender/compositor/operations/COM_SetColorOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETCOLOROPERATION_H__
-#define __COM_SETCOLOROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -82,4 +82,3 @@ class SetColorOperation : public NodeOperation {
     return true;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SetSamplerOperation.h b/source/blender/compositor/operations/COM_SetSamplerOperation.h
index 62f01129ff7..c0b5d5a37be 100644
--- a/source/blender/compositor/operations/COM_SetSamplerOperation.h
+++ b/source/blender/compositor/operations/COM_SetSamplerOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETSAMPLEROPERATION_H__
-#define __COM_SETSAMPLEROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -47,4 +47,3 @@ class SetSamplerOperation : public NodeOperation {
   void initExecution();
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SetValueOperation.h b/source/blender/compositor/operations/COM_SetValueOperation.h
index 6fb2832450d..6645cd558b2 100644
--- a/source/blender/compositor/operations/COM_SetValueOperation.h
+++ b/source/blender/compositor/operations/COM_SetValueOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETVALUEOPERATION_H__
-#define __COM_SETVALUEOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -54,4 +54,3 @@ class SetValueOperation : public NodeOperation {
     return true;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SetVectorOperation.h b/source/blender/compositor/operations/COM_SetVectorOperation.h
index a2f9aaa6b3b..05c8e6dc56b 100644
--- a/source/blender/compositor/operations/COM_SetVectorOperation.h
+++ b/source/blender/compositor/operations/COM_SetVectorOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SETVECTOROPERATION_H__
-#define __COM_SETVECTOROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 /**
@@ -88,4 +88,3 @@ class SetVectorOperation : public NodeOperation {
     setZ(vector[2]);
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SocketProxyOperation.h b/source/blender/compositor/operations/COM_SocketProxyOperation.h
index 3855c26088a..22c144598f6 100644
--- a/source/blender/compositor/operations/COM_SocketProxyOperation.h
+++ b/source/blender/compositor/operations/COM_SocketProxyOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SOCKETPROXYOPERATION_H__
-#define __COM_SOCKETPROXYOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -46,5 +45,3 @@ class SocketProxyOperation : public NodeOperation {
  private:
   bool m_use_conversion;
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_SplitOperation.h b/source/blender/compositor/operations/COM_SplitOperation.h
index ea923123290..62d41a615ff 100644
--- a/source/blender/compositor/operations/COM_SplitOperation.h
+++ b/source/blender/compositor/operations/COM_SplitOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_SPLITOPERATION_H__
-#define __COM_SPLITOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 
 class SplitOperation : public NodeOperation {
@@ -43,4 +43,3 @@ class SplitOperation : public NodeOperation {
     this->m_xSplit = xsplit;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_SunBeamsOperation.h b/source/blender/compositor/operations/COM_SunBeamsOperation.h
index d8153264d98..09bdb018cc3 100644
--- a/source/blender/compositor/operations/COM_SunBeamsOperation.h
+++ b/source/blender/compositor/operations/COM_SunBeamsOperation.h
@@ -15,8 +15,7 @@
  * Copyright 2014, Blender Foundation.
  */
 
-#ifndef __COM_SUNBEAMSOPERATION_H__
-#define __COM_SUNBEAMSOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -45,5 +44,3 @@ class SunBeamsOperation : public NodeOperation {
   float m_source_px[2];
   float m_ray_length_px;
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_TextureOperation.h b/source/blender/compositor/operations/COM_TextureOperation.h
index ebfdbb6513a..7fa85922b0b 100644
--- a/source/blender/compositor/operations/COM_TextureOperation.h
+++ b/source/blender/compositor/operations/COM_TextureOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TEXTUREOPERATION_H__
-#define __COM_TEXTUREOPERATION_H__
+#pragma once
 
 #include "BLI_listbase.h"
 #include "COM_NodeOperation.h"
@@ -81,5 +80,3 @@ class TextureAlphaOperation : public TextureBaseOperation {
   TextureAlphaOperation();
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_TonemapOperation.h b/source/blender/compositor/operations/COM_TonemapOperation.h
index 11e82c1fc9c..066332fb7e4 100644
--- a/source/blender/compositor/operations/COM_TonemapOperation.h
+++ b/source/blender/compositor/operations/COM_TonemapOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TONEMAPOPERATION_H__
-#define __COM_TONEMAPOPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "DNA_node_types.h"
 
@@ -98,5 +98,3 @@ class PhotoreceptorTonemapOperation : public TonemapOperation {
    */
   void executePixel(float output[4], int x, int y, void *data);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_TrackPositionOperation.h b/source/blender/compositor/operations/COM_TrackPositionOperation.h
index 695e85f4fa3..7d831ec5d8d 100644
--- a/source/blender/compositor/operations/COM_TrackPositionOperation.h
+++ b/source/blender/compositor/operations/COM_TrackPositionOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2012, Blender Foundation.
  */
 
-#ifndef __COM_TRACKPOSITIONOPERATION_H__
-#define __COM_TRACKPOSITIONOPERATION_H__
+#pragma once
 
 #include <string.h>
 
@@ -97,5 +96,3 @@ class TrackPositionOperation : public NodeOperation {
     return true;
   }
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_TranslateOperation.h b/source/blender/compositor/operations/COM_TranslateOperation.h
index 2d13813a86a..99cfb528858 100644
--- a/source/blender/compositor/operations/COM_TranslateOperation.h
+++ b/source/blender/compositor/operations/COM_TranslateOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_TRANSLATEOPERATION_H__
-#define __COM_TRANSLATEOPERATION_H__
+#pragma once
 
 #include "COM_NodeOperation.h"
 
@@ -65,5 +64,3 @@ class TranslateOperation : public NodeOperation {
 
   void setFactorXY(float factorX, float factorY);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
index 930bfd77943..82f41ad68e3 100644
--- a/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
+++ b/source/blender/compositor/operations/COM_VariableSizeBokehBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VARIABLESIZEBOKEHBLUROPERATION_H__
-#define __COM_VARIABLESIZEBOKEHBLUROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
 
@@ -123,4 +123,3 @@ class InverseSearchRadiusOperation : public NodeOperation {
   }
 };
 #endif
-#endif
diff --git a/source/blender/compositor/operations/COM_VectorBlurOperation.h b/source/blender/compositor/operations/COM_VectorBlurOperation.h
index 3caf5c5c8e4..846b69310bf 100644
--- a/source/blender/compositor/operations/COM_VectorBlurOperation.h
+++ b/source/blender/compositor/operations/COM_VectorBlurOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VECTORBLUROPERATION_H__
-#define __COM_VECTORBLUROPERATION_H__
+#pragma once
+
 #include "COM_NodeOperation.h"
 #include "COM_QualityStepHelper.h"
 #include "DNA_node_types.h"
@@ -72,4 +72,3 @@ class VectorBlurOperation : public NodeOperation, public QualityStepHelper {
                           MemoryBuffer *inputSpeed,
                           MemoryBuffer *inputZ);
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_VectorCurveOperation.h b/source/blender/compositor/operations/COM_VectorCurveOperation.h
index 65441dbdfb7..9fa5fe78a4b 100644
--- a/source/blender/compositor/operations/COM_VectorCurveOperation.h
+++ b/source/blender/compositor/operations/COM_VectorCurveOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VECTORCURVEOPERATION_H__
-#define __COM_VECTORCURVEOPERATION_H__
+#pragma once
+
 #include "COM_CurveBaseOperation.h"
 #include "COM_NodeOperation.h"
 
@@ -46,4 +46,3 @@ class VectorCurveOperation : public CurveBaseOperation {
    */
   void deinitExecution();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ViewerOperation.h b/source/blender/compositor/operations/COM_ViewerOperation.h
index aae2e912804..680744c70d9 100644
--- a/source/blender/compositor/operations/COM_ViewerOperation.h
+++ b/source/blender/compositor/operations/COM_ViewerOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_VIEWEROPERATION_H__
-#define __COM_VIEWEROPERATION_H__
+#pragma once
+
 #include "BKE_global.h"
 #include "BLI_rect.h"
 #include "COM_NodeOperation.h"
@@ -129,4 +129,3 @@ class ViewerOperation : public NodeOperation {
   void updateImage(rcti *rect);
   void initImage();
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_WrapOperation.h b/source/blender/compositor/operations/COM_WrapOperation.h
index 6360fa0c246..d1acfb10f25 100644
--- a/source/blender/compositor/operations/COM_WrapOperation.h
+++ b/source/blender/compositor/operations/COM_WrapOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_WRAPOPERATION_H__
-#define __COM_WRAPOPERATION_H__
+#pragma once
 
 #include "COM_ReadBufferOperation.h"
 
@@ -38,5 +37,3 @@ class WrapOperation : public ReadBufferOperation {
 
   void setFactorXY(float factorX, float factorY);
 };
-
-#endif
diff --git a/source/blender/compositor/operations/COM_WriteBufferOperation.h b/source/blender/compositor/operations/COM_WriteBufferOperation.h
index be525db4420..a9f90830a92 100644
--- a/source/blender/compositor/operations/COM_WriteBufferOperation.h
+++ b/source/blender/compositor/operations/COM_WriteBufferOperation.h
@@ -16,8 +16,7 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_WRITEBUFFEROPERATION_H__
-#define __COM_WRITEBUFFEROPERATION_H__
+#pragma once
 
 #include "COM_MemoryProxy.h"
 #include "COM_NodeOperation.h"
@@ -63,4 +62,3 @@ class WriteBufferOperation : public NodeOperation {
     return m_input;
   }
 };
-#endif
diff --git a/source/blender/compositor/operations/COM_ZCombineOperation.h b/source/blender/compositor/operations/COM_ZCombineOperation.h
index 9a93d080a2f..8c6e73f8c55 100644
--- a/source/blender/compositor/operations/COM_ZCombineOperation.h
+++ b/source/blender/compositor/operations/COM_ZCombineOperation.h
@@ -16,8 +16,8 @@
  * Copyright 2011, Blender Foundation.
  */
 
-#ifndef __COM_ZCOMBINEOPERATION_H__
-#define __COM_ZCOMBINEOPERATION_H__
+#pragma once
+
 #include "COM_MixOperation.h"
 
 /**
@@ -66,5 +66,3 @@ class ZCombineMaskOperation : public NodeOperation {
 class ZCombineMaskAlphaOperation : public ZCombineMaskOperation {
   void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);
 };
-
-#endif