freedreno/ir3: Add workaround for VS samgq

This instruction needs a workaround when used from vertex shaders.

Fixes:

  dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler2dshadow_vertex
  dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler3d_fixed_vertex
  dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler3d_float_vertex
  dEQP-GLES3.functional.shaders.texture_functions.textureprojgradoffset.sampler2dshadow_vertex
  dEQP-GLES3.functional.shaders.texture_functions.textureprojgradoffset.sampler3d_fixed_vertex
  dEQP-GLES3.functional.shaders.texture_functions.textureprojgradoffset.sampler3d_float_vertex
  dEQP-GLES3.functional.shaders.texture_functions.textureprojgrad.sampler2dshadow_vertex

Signed-off-by: Kristian H. Kristensen <[email protected]>
Reviewed-by: Rob Clark <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/freedreno/ir3/ir3_compiler.h b/src/freedreno/ir3/ir3_compiler.h
index 1bc59970c4e..181125fa3b1 100644
--- a/src/freedreno/ir3/ir3_compiler.h
+++ b/src/freedreno/ir3/ir3_compiler.h
@@ -63,6 +63,10 @@ struct ir3_compiler {
 	 * index coordinate:
 	 */
 	bool array_index_add_half;
+
+	/* on a6xx, rewrite samgp to sequence of samgq0-3 in vertex shaders:
+	 */
+	bool samgq_workaround;
 };
 
 struct ir3_compiler * ir3_compiler_create(struct fd_device *dev, uint32_t gpu_id);