glsl: Parse and propagate derivative_group to shader_info

NV_compute_shader_derivatives allow selecting between two possible
arrangements (quads and linear) when calculating derivatives and
certain subgroup operations in case of Vulkan.  So parse and propagate
those up to shader_info.h.

v2: Do not fail when ARB_compute_variable_group_size is being used,
    since we are still clarifying what is the right thing to do here.

Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index d024d2a39fe..6f9c74bdfb0 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2516,6 +2516,12 @@ struct gl_shader_info
        * ARB_compute_variable_group_size.
        */
       bool LocalSizeVariable;
+
+      /*
+       * Arrangement of invocations used to calculate derivatives in a compute
+       * shader.  From NV_compute_shader_derivatives.
+       */
+      enum gl_derivative_group DerivativeGroup;
    } Comp;
 };