fix up access to vertex attrib components which don't really exist but are defined...

diff --git a/src/mesa/drivers/dri/r200/r200_vertprog.c b/src/mesa/drivers/dri/r200/r200_vertprog.c
index cf0c150..366d242 100644 (file)
--- a/src/mesa/drivers/dri/r200/r200_vertprog.c
+++ b/src/mesa/drivers/dri/r200/r200_vertprog.c
@@ -587,8 +587,46 @@ static GLboolean r200_translate_vertex_program(struct r200_vertex_program *vp)
       are_srcs_scalar = operands & SCALAR_FLAG;
       operands &= OP_MASK;
 
-      for(i = 0; i < operands; i++)
+      for(i = 0; i < operands; i++) {
         src[i] = vpi->SrcReg[i];
+        /* hack up default attrib values as per spec as swizzling.
+           normal, fog, secondary color. Crazy?
+           May need more if we don't submit vec4 elements? */
+        if (src[i].File == PROGRAM_INPUT) {
+           if (src[i].Index == VERT_ATTRIB_NORMAL) {
+              int j;
+              for (j = 0; j < 4; j++) {
+                 if (GET_SWZ(src[i].Swizzle, j) == SWIZZLE_W) {
+                    src[i].Swizzle &= ~(SWIZZLE_W << (j*3));
+                    src[i].Swizzle |= SWIZZLE_ONE << (j*3);
+                 }
+              }
+           }
+           else if (src[i].Index == VERT_ATTRIB_COLOR1) {
+              int j;
+              for (j = 0; j < 4; j++) {
+                 if (GET_SWZ(src[i].Swizzle, j) == SWIZZLE_W) {
+                    src[i].Swizzle &= ~(SWIZZLE_W << (j*3));
+                    src[i].Swizzle |= SWIZZLE_ZERO << (j*3);
+                 }
+              }
+           }
+           else if (src[i].Index == VERT_ATTRIB_FOG) {
+              int j;
+              for (j = 0; j < 4; j++) {
+                 if (GET_SWZ(src[i].Swizzle, j) == SWIZZLE_W) {
+                    src[i].Swizzle &= ~(SWIZZLE_W << (j*3));
+                    src[i].Swizzle |= SWIZZLE_ONE << (j*3);
+                 }
+                 else if ((GET_SWZ(src[i].Swizzle, j) == SWIZZLE_Y) ||
+                           GET_SWZ(src[i].Swizzle, j) == SWIZZLE_Z) {
+                    src[i].Swizzle &= ~(SWIZZLE_W << (j*3));
+                    src[i].Swizzle |= SWIZZLE_ZERO << (j*3);
+                 }
+              }
+           }
+        }
+      }
 
       if(operands == 3){
         if( CMP_SRCS(src[1], src[2]) || CMP_SRCS(src[0], src[2]) ){