mesa/main: add support for ARB_compute_variable_groups_size

v5: - replace fixed_local_size by !LocalSizeVariable (Nicolai)
v4: - slightly indent spec quotes (Nicolai)
    - drop useless _mesa_has_compute_shaders() check (Nicolai)
    - move the fixed local size outside of the loop (Nicolai)
    - add missing check for invalid use of work group count
v2: - update formatting spec quotations (Ian)
    - move the total_invocations check outside of the loop (Ian)

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 64a4b0e..bd85bef 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -490,6 +490,7 @@ EXTRA_EXT(ARB_cull_distance);
 EXTRA_EXT(EXT_window_rectangles);
 EXTRA_EXT(KHR_blend_equation_advanced_coherent);
 EXTRA_EXT(OES_primitive_bounding_box);
+EXTRA_EXT(ARB_compute_variable_group_size);
 
 static const int
 extra_ARB_color_buffer_float_or_glcore[] = {
@@ -2293,6 +2294,15 @@ find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
          goto invalid_value;
       v->value_int = ctx->Const.MaxComputeWorkGroupSize[index];
       return TYPE_INT;
+
+   /* ARB_compute_variable_group_size */
+   case GL_MAX_COMPUTE_VARIABLE_GROUP_SIZE_ARB:
+      if (!ctx->Extensions.ARB_compute_variable_group_size)
+         goto invalid_enum;
+      if (index >= 3)
+         goto invalid_value;
+      v->value_int = ctx->Const.MaxComputeVariableGroupSize[index];
+      return TYPE_INT;
    }
 
  invalid_enum: