1 files changed, 98 insertions, 0 deletions
diff --git a/source/blender/gpu/opengl/gl_vertex_buffer.hh b/source/blender/gpu/opengl/gl_vertex_buffer.hh
new file mode 100644
index 00000000000..76c5e86a1c7
--- /dev/null
+++ b/source/blender/gpu/opengl/gl_vertex_buffer.hh
@@ -0,0 +1,98 @@
+/*
+ * 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) 2020 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup gpu
+ */
+
+#pragma once
+
+#include "MEM_guardedalloc.h"
+
+#include "glew-mx.h"
+
+#include "gpu_vertex_buffer_private.hh"
+
+namespace blender {
+namespace gpu {
+
+class GLVertBuf : public VertBuf {
+  friend class GLTexture; /* For buffer texture. */
+  friend class GLShader;  /* For transform feedback. */
+
+ private:
+  // GLuint vbo_id_ = 0;
+  /** Size on the GPU. */
+  // size_t vbo_size_ = 0;
+
+ public:
+  void bind(void);
+
+ protected:
+  uchar *acquire_data(void);
+  uchar *resize_data(void);
+  void release_data(void);
+  void upload_data(void);
+  void duplicate_data(VertBuf *dst);
+
+  MEM_CXX_CLASS_ALLOC_FUNCS("GLVertBuf");
+};
+
+static inline GLenum to_gl(GPUUsageType type)
+{
+  switch (type) {
+    case GPU_USAGE_STREAM:
+      return GL_STREAM_DRAW;
+    case GPU_USAGE_DYNAMIC:
+      return GL_DYNAMIC_DRAW;
+    case GPU_USAGE_STATIC:
+      return GL_STATIC_DRAW;
+    default:
+      BLI_assert(0);
+      return GL_STATIC_DRAW;
+  }
+}
+
+static inline GLenum to_gl(GPUVertCompType type)
+{
+  switch (type) {
+    case GPU_COMP_I8:
+      return GL_BYTE;
+    case GPU_COMP_U8:
+      return GL_UNSIGNED_BYTE;
+    case GPU_COMP_I16:
+      return GL_SHORT;
+    case GPU_COMP_U16:
+      return GL_UNSIGNED_SHORT;
+    case GPU_COMP_I32:
+      return GL_INT;
+    case GPU_COMP_U32:
+      return GL_UNSIGNED_INT;
+    case GPU_COMP_F32:
+      return GL_FLOAT;
+    case GPU_COMP_I10:
+      return GL_INT_2_10_10_10_REV;
+    default:
+      BLI_assert(0);
+      return GL_FLOAT;
+  }
+}
+
+}  // namespace gpu
+}  // namespace blender