[Mesa-dev] [PATCH 1/2] radv/gfx10: support pixel shaders without exports

[Samuel Pitoiset]

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
 src/amd/vulkan/radv_pipeline.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index fdb0ed29ea4..31495ec078d 100644
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -4283,9 +4283,15 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
 	 *    stalls without this setting.
 	 *
 	 * Don't add this to CB_SHADER_MASK.
+	 *
+	 * GFX10 supports pixel shaders without exports by setting both the
+	 * color and Z formats to SPI_SHADER_ZERO. The hw will skip export
+	 * instructions if any are present.
 	 */
 	struct radv_shader_variant *ps = pipeline->shaders[MESA_SHADER_FRAGMENT];
-	if (!blend.spi_shader_col_format) {
+	if ((pipeline->device->physical_device->rad_info.chip_class <= GFX9 ||
+	     ps->info.fs.can_discard) &&
+	    !blend.spi_shader_col_format) {
 		if (!ps->info.info.ps.writes_z &&
 		    !ps->info.info.ps.writes_stencil &&
 		    !ps->info.info.ps.writes_sample_mask)
-- 
2.22.0