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 <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 257dc103817..7f5327186ff 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -978,6 +978,15 @@ struct dd_function_table {
    /*@}*/
 
    /**
+    * \name GL_ARB_compute_variable_group_size interface
+    */
+   /*@{*/
+   void (*DispatchComputeGroupSize)(struct gl_context *ctx,
+                                    const GLuint *num_groups,
+                                    const GLuint *group_size);
+   /*@}*/
+
+   /**
     * Query information about memory. Device memory is e.g. VRAM. Staging
     * memory is e.g. GART. All sizes are in kilobytes.
     */