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-rw-r--r--src/mesa/pipe/softpipe/sp_prim_setup.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.c b/src/mesa/pipe/softpipe/sp_prim_setup.c
index 2ccf5e2624..de45529bf9 100644
--- a/src/mesa/pipe/softpipe/sp_prim_setup.c
+++ b/src/mesa/pipe/softpipe/sp_prim_setup.c
@@ -516,7 +516,7 @@ setup_fragcoord_coeff(struct setup_stage *setup)
static void setup_tri_coefficients( struct setup_stage *setup )
{
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
-#define USE_INPUT_MAP 0
+#define USE_INPUT_MAP 01
#if USE_INPUT_MAP
const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
#endif
@@ -554,6 +554,12 @@ static void setup_tri_coefficients( struct setup_stage *setup )
*/
setup_fragcoord_coeff(setup);
}
+ else if (fs->input_semantic_name[fragSlot] == TGSI_SEMANTIC_FOG) {
+ /* FOG.y = front/back facing XXX fix this */
+ setup->coef[fragSlot].a0[1] = 1 - setup->quad.facing;
+ setup->coef[fragSlot].dadx[1] = 0.0;
+ setup->coef[fragSlot].dady[1] = 0.0;
+ }
else {
#endif
uint j;