Mesa (master): radeonsi: Handle TGSI_SEMANTIC_FOG.

[Michel Dänzer]

Module: Mesa
Branch: master
Commit: 30b303743df5a774e99938d3f4f21c9536b067ab
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=30b303743df5a774e99938d3f4f21c9536b067ab

Author: Michel Dänzer <michel.daenzer at amd.com>
Date:   Thu Sep  6 17:53:04 2012 +0200

radeonsi: Handle TGSI_SEMANTIC_FOG.

Fixes exponential fog. The pixel shaders for linear fog seem to get
miscompiled still somehow.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>

---

 src/gallium/drivers/radeonsi/radeonsi_shader.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 1c330b5..9fc3446 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -538,6 +538,7 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
 					color_count++;
 				}
 				break;
+			case TGSI_SEMANTIC_FOG:
 			case TGSI_SEMANTIC_GENERIC:
 				target = V_008DFC_SQ_EXP_PARAM + param_count;
 				shader->output[i].param_offset = param_count;