[Mesa-dev] [PATCH] radv: enable sample shading

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This calculates ps_iter_samples from the minSampleShading input

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/amd/vulkan/radv_device.c   | 2 +-
 src/amd/vulkan/radv_pipeline.c | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index aa2b021..a75ad27 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -370,7 +370,7 @@ void radv_GetPhysicalDeviceFeatures(
 		.independentBlend                         = true,
 		.geometryShader                           = false,
 		.tessellationShader                       = false,
-		.sampleRateShading                        = false,
+		.sampleRateShading                        = true,
 		.dualSrcBlend                             = true,
 		.logicOp                                  = true,
 		.multiDrawIndirect                        = true,
diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index 652a2c4..6bec7c7 100644
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -1021,8 +1021,10 @@ radv_pipeline_init_multisample_state(struct radv_pipeline *pipeline,
 
 	ms->num_samples = vkms->rasterizationSamples;
 
-	if (pipeline->shaders[MESA_SHADER_FRAGMENT]->info.fs.force_persample) {
-		ps_iter_samples = vkms->rasterizationSamples;
+	if (vkms->sampleShadingEnable) {
+		ps_iter_samples = ms->num_samples * vkms->minSampleShading;
+	} else if (pipeline->shaders[MESA_SHADER_FRAGMENT]->info.fs.force_persample) {
+		ps_iter_samples = ms->num_samples;
 	}
 
 	ms->pa_sc_line_cntl = S_028BDC_DX10_DIAMOND_TEST_ENA(1);
-- 
2.7.4