gallium: fixup register indexes for fog/frontface/point coord

2009-07-07 12:48:50 -07:00
parent 71633abafc
commit 7b861b9b9e
1 changed files with 12 additions and 3 deletions
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -142,9 +142,18 @@ find_translated_vp(struct st_context *st,
            if ((fragInputsRead & FRAG_BIT_FOGC)) {
               /* leave placeholders for the
                * extra registers we extract from fog */
-               if (stfp->Base.UsesFrontFacing ||
-                   stfp->Base.UsesPointCoord) {
-                  numIn += 2;
+               if (stfp->Base.UsesFrontFacing) {
+                  if (!stfp->Base.UsesFogFragCoord)
+                     --stfp->input_to_slot[inAttr];
+                  else
+                     ++numIn;
+               }
+               if (stfp->Base.UsesPointCoord) {
+                  if (!stfp->Base.UsesFrontFacing &&
+                      !stfp->Base.UsesFogFragCoord)
+                     stfp->input_to_slot[inAttr] -= 2;
+                  else
+                     ++numIn;
               }
            }
         }