From: Marek Olšák <marek.ol...@amd.com>

---
 docs/GL3.txt                             | 2 +-
 src/gallium/drivers/radeonsi/si_shader.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/docs/GL3.txt b/docs/GL3.txt
index 43bbf85..0487cdf 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -106,7 +106,7 @@ GL 4.0, GLSL 4.00:
   - Enhanced textureGather                             DONE (r600, radeonsi)
   - Geometry shader instancing                         DONE (r600)
   - Geometry shader multiple streams                   DONE ()
-  - Enhanced per-sample shading                        DONE (r600)
+  - Enhanced per-sample shading                        DONE (r600, radeonsi)
   - Interpolation functions                            DONE (r600)
   - New overload resolution rules                      DONE
   GL_ARB_gpu_shader_fp64                               DONE (nvc0, softpipe)
diff --git a/src/gallium/drivers/radeonsi/si_shader.c 
b/src/gallium/drivers/radeonsi/si_shader.c
index 085a350..8001ea2 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -680,6 +680,10 @@ static void declare_system_value(
                break;
        }
 
+       case TGSI_SEMANTIC_SAMPLEMASK:
+               value = LLVMGetParam(radeon_bld->main_fn, 
SI_PARAM_SAMPLE_COVERAGE);
+               break;
+
        default:
                assert(!"unknown system value");
                return;
-- 
2.1.0

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