mesa: more prog_execute.c debug code
diff --git a/src/mesa/program/prog_execute.c b/src/mesa/program/prog_execute.c
index ff8c20c..2ae5bc5 100644
--- a/src/mesa/program/prog_execute.c
+++ b/src/mesa/program/prog_execute.c
@@ -771,6 +771,13 @@
             result[2] = a[2] < 0.0F ? b[2] : c[2];
             result[3] = a[3] < 0.0F ? b[3] : c[3];
             store_vector4(inst, machine, result);
+            if (DEBUG_PROG) {
+               printf("CMP (%g %g %g %g) = (%g %g %g %g) < 0 ? (%g %g %g %g) : (%g %g %g %g)\n",
+                      result[0], result[1], result[2], result[3],
+                      a[0], a[1], a[2], a[3],
+                      b[0], b[1], b[2], b[3],
+                      c[0], c[1], c[2], c[3]);
+            }
          }
          break;
       case OPCODE_COS: