Properly handle vertex color color space for Cycles GLSL

A bit tricky, need to pass additional information about what the attribute
is and how to deal with it.

BI path stays unchanged, just to make things simplier for now.

Fixes T48555: Cycles GLSL- Incorrect Vertex Color results from Attribute node

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_buffers.h b/source/blender/gpu/GPU_buffers.h
index a8656c05224..ee7abe08aba 100644
--- a/source/blender/gpu/GPU_buffers.h
+++ b/source/blender/gpu/GPU_buffers.h
@@ -147,6 +147,7 @@ typedef struct GPUVertPointLink {
 /* used for GLSL materials */
 typedef struct GPUAttrib {
 	int index;
+	int info_index;
 	int size;
 	int type;
 } GPUAttrib;
@@ -179,6 +180,10 @@ typedef enum {
 	GPU_BINDING_INDEX = 1,
 } GPUBindingType;
 
+typedef enum {
+	GPU_ATTR_INFO_SRGB = (1 << 0),
+} GPUAttrInfo;
+
 /* called before drawing */
 void GPU_vertex_setup(struct DerivedMesh *dm);
 void GPU_normal_setup(struct DerivedMesh *dm);