DRW: Use USHORT for vertex color and upload them in linear color to the GPU

This way we remove the need for the srgb boolean uniform and a lot of code complexity. However, mesh update is going to be a bit slower.

I did not benchmark the performance impact.

This also fix a typo in draw_cache_impl_particles.c and fix hair not using vertex color in workbench.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D6610

1 files changed, 1 insertions, 2 deletions

diff --git a/source/blender/draw/engines/workbench/workbench_deferred.c b/source/blender/draw/engines/workbench/workbench_deferred.c
index 1af9357e015..86ed1f0b4c3 100644
--- a/source/blender/draw/engines/workbench/workbench_deferred.c
+++ b/source/blender/draw/engines/workbench/workbench_deferred.c
@@ -1138,8 +1138,7 @@ void workbench_deferred_solid_cache_populate(WORKBENCH_Data *vedata, Object *ob)
         struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len);
         memset(gpumat_array, 0, sizeof(*gpumat_array) * materials_len);
 
-        geoms = DRW_cache_object_surface_material_get(
-            ob, gpumat_array, materials_len, NULL, NULL, NULL);
+        geoms = DRW_cache_object_surface_material_get(ob, gpumat_array, materials_len);
         for (int i = 0; i < materials_len; i++) {
           if (geoms != NULL && geoms[i] != NULL) {
             Material *mat = give_current_material(ob, i + 1);