Mesa (master): radeonsi: implement gl_SampleMaskIn

[Marek Olšák]

Module: Mesa
Branch: master
Commit: ca90cde81eb48a50286193c6bbef9ef47c70a0c6
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ca90cde81eb48a50286193c6bbef9ef47c70a0c6

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Sat Feb 28 00:30:26 2015 +0100

radeonsi: implement gl_SampleMaskIn

Reviewed-by: Glenn Kennard <glenn.kennard at gmail.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 289dd36..267740a 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 0ef58a7..e70a318 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -643,6 +643,10 @@ 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;