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, 1 deletions

diff --git a/source/blender/draw/intern/draw_cache_impl_particles.c b/source/blender/draw/intern/draw_cache_impl_particles.c
index 7de6ee2b3b1..f4057927d55 100644
--- a/source/blender/draw/intern/draw_cache_impl_particles.c
+++ b/source/blender/draw/intern/draw_cache_impl_particles.c
@@ -1199,7 +1199,7 @@ static void particle_batch_cache_ensure_pos_and_seg(PTCacheEdit *edit,
       GPU_vertformat_safe_attrib_name(name, attr_safe_name, GPU_MAX_SAFE_ATTRIB_NAME);
 
       BLI_snprintf(uuid, sizeof(uuid), "c%s", attr_safe_name);
-      col_id[i] = GPU_vertformat_attr_add(&format, uuid, GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
+      col_id[i] = GPU_vertformat_attr_add(&format, uuid, GPU_COMP_U16, 4, GPU_FETCH_FLOAT);
 
       if (i == active_col) {
         GPU_vertformat_alias_add(&format, "c");