Cleanup: split off code from gpu_codegen.c into smaller files

1 files changed, 182 insertions, 0 deletions

diff --git a/source/blender/gpu/intern/gpu_node_graph.h b/source/blender/gpu/intern/gpu_node_graph.h
new file mode 100644
index 00000000000..51e188e3f5e
--- /dev/null
+++ b/source/blender/gpu/intern/gpu_node_graph.h
@@ -0,0 +1,182 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup gpu
+ */
+
+#ifndef __GPU_NODE_GRAPH_H__
+#define __GPU_NODE_GRAPH_H__
+
+#include "DNA_customdata_types.h"
+#include "DNA_listBase.h"
+
+#include "GPU_material.h"
+#include "GPU_glew.h"
+#include "GPU_shader.h"
+
+struct GPUNode;
+struct GPUOutput;
+struct GPUShader;
+struct GPUVertAttrLayers;
+struct ListBase;
+
+typedef enum eGPUDataSource {
+  GPU_SOURCE_OUTPUT,
+  GPU_SOURCE_CONSTANT,
+  GPU_SOURCE_UNIFORM,
+  GPU_SOURCE_ATTR,
+  GPU_SOURCE_BUILTIN,
+  GPU_SOURCE_STRUCT,
+  GPU_SOURCE_TEX,
+} eGPUDataSource;
+
+typedef enum {
+  GPU_NODE_LINK_NONE = 0,
+  GPU_NODE_LINK_ATTR,
+  GPU_NODE_LINK_BUILTIN,
+  GPU_NODE_LINK_COLORBAND,
+  GPU_NODE_LINK_CONSTANT,
+  GPU_NODE_LINK_IMAGE_BLENDER,
+  GPU_NODE_LINK_IMAGE_TILEMAP,
+  GPU_NODE_LINK_OUTPUT,
+  GPU_NODE_LINK_UNIFORM,
+} GPUNodeLinkType;
+
+struct GPUNode {
+  struct GPUNode *next, *prev;
+
+  const char *name;
+
+  /* Internal flag to mark nodes during pruning */
+  bool tag;
+
+  ListBase inputs;
+  ListBase outputs;
+};
+
+struct GPUNodeLink {
+  GPUNodeStack *socket;
+
+  GPUNodeLinkType link_type;
+  int users; /* Refcount */
+
+  union {
+    /* GPU_NODE_LINK_CONSTANT | GPU_NODE_LINK_UNIFORM */
+    float *data;
+    /* GPU_NODE_LINK_BUILTIN */
+    eGPUBuiltin builtin;
+    /* GPU_NODE_LINK_COLORBAND */
+    struct GPUTexture **coba;
+    /* GPU_NODE_LINK_OUTPUT */
+    struct GPUOutput *output;
+    /* GPU_NODE_LINK_ATTR */
+    struct {
+      const char *attr_name;
+      CustomDataType attr_type;
+    };
+    /* GPU_NODE_LINK_IMAGE_BLENDER | GPU_NODE_LINK_IMAGE_TILEMAP */
+    struct {
+      struct Image *ima;
+      struct ImageUser *iuser;
+    };
+  };
+};
+
+typedef struct GPUOutput {
+  struct GPUOutput *next, *prev;
+
+  GPUNode *node;
+  eGPUType type;     /* data type = length of vector/matrix */
+  GPUNodeLink *link; /* output link */
+  int id;            /* unique id as created by code generator */
+} GPUOutput;
+
+typedef struct GPUInput {
+  struct GPUInput *next, *prev;
+
+  GPUNode *node;
+  eGPUType type; /* datatype */
+  GPUNodeLink *link;
+  int id; /* unique id as created by code generator */
+
+  eGPUDataSource source; /* data source */
+
+  int shaderloc;       /* id from opengl */
+  char shadername[32]; /* name in shader */
+
+  /* Content based on eGPUDataSource */
+  union {
+    /* GPU_SOURCE_CONSTANT | GPU_SOURCE_UNIFORM */
+    float vec[16]; /* vector data */
+    /* GPU_SOURCE_BUILTIN */
+    eGPUBuiltin builtin; /* builtin uniform */
+    /* GPU_SOURCE_TEX */
+    struct {
+      struct GPUTexture **coba; /* input texture, only set at runtime */
+      struct Image *ima;        /* image */
+      struct ImageUser *iuser;  /* image user */
+      bool bindtex;             /* input is responsible for binding the texture? */
+      int texid;                /* number for multitexture, starting from zero */
+      eGPUType textype;         /* texture type (2D, 1D Array ...) */
+    };
+    /* GPU_SOURCE_ATTR */
+    struct {
+      /** Attribute name. */
+      char attr_name[MAX_CUSTOMDATA_LAYER_NAME];
+      /** ID for vertex attributes. */
+      int attr_id;
+      /** This is the first one that is bound. */
+      bool attr_first;
+      /** Attribute type. */
+      CustomDataType attr_type;
+    };
+  };
+} GPUInput;
+
+typedef struct GPUNodeGraph {
+  /* Nodes */
+  ListBase nodes;
+
+  /* Inputs and output. */
+  ListBase inputs;
+  GPUNodeLink *outlink;
+
+  /* Needed attributes. */
+  GPUVertAttrLayers attrs;
+  int builtins;
+} GPUNodeGraph;
+
+/* Node Graph */
+
+void gpu_node_graph_prune_unused(GPUNodeGraph *graph);
+void gpu_node_graph_extract_dynamic_inputs(struct GPUShader *shader, GPUNodeGraph *graph);
+void gpu_node_graph_free(GPUNodeGraph *graph);
+
+/* Material calls */
+
+void gpu_material_add_node(struct GPUMaterial *material, struct GPUNode *node);
+struct GPUTexture **gpu_material_ramp_texture_row_set(struct GPUMaterial *mat,
+                                                      int size,
+                                                      float *pixels,
+                                                      float *row);
+
+struct GSet *gpu_material_used_libraries(struct GPUMaterial *material);
+
+#endif /* __GPU_NODE_GRAPH_H__ */