[Bf-blender-cvs] [cf52e4a07f2] temp-vulkan-shader: Add definition of gl_InstanceID.

[Jeroen Bakker]

Commit: cf52e4a07f283352bb98e0d5fd7bd6d3482aca5c
Author: Jeroen Bakker
Date:   Tue Nov 29 15:28:53 2022 +0100
Branches: temp-vulkan-shader
https://developer.blender.org/rBcf52e4a07f283352bb98e0d5fd7bd6d3482aca5c

Add definition of gl_InstanceID.

===================================================================

M	source/blender/gpu/vulkan/vk_shader.cc

===================================================================

diff --git a/source/blender/gpu/vulkan/vk_shader.cc b/source/blender/gpu/vulkan/vk_shader.cc
index fe5db057fa5..b9f703d1406 100644
--- a/source/blender/gpu/vulkan/vk_shader.cc
+++ b/source/blender/gpu/vulkan/vk_shader.cc
@@ -509,6 +509,9 @@ static char *glsl_patch_get()
   STR_CONCAT(patch, slen, "#define gpu_BaseInstance 0\n");
   STR_CONCAT(patch, slen, "#define gpu_InstanceIndex (gl_InstanceIndex + gpu_BaseInstance)\n");
 
+  // TODO: we should remove usage of gl_InstanceID/gl_VertexID.
+  STR_CONCAT(patch, slen, "#define gl_InstanceID gpu_InstanceIndex\n");
+
   /* GLSL Backend Lib. */
   STR_CONCAT(patch, slen, datatoc_glsl_shader_defines_glsl);