Accomodate ARB_fp XPD opcode separately from NV_fp's X2D.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c
index 4083581ab0..127cc4f0b4 100644
--- a/src/mesa/swrast/s_nvfragprog.c
+++ b/src/mesa/swrast/s_nvfragprog.c
@@ -1233,6 +1233,18 @@ execute_program( GLcontext *ctx,
                store_vector4( inst, machine, result );
             }
             break;
+         case FP_OPCODE_XPD: /* cross product */
+            {
+               GLfloat a[4], b[4], result[4];
+               fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a );
+               fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b );
+               result[0] = a[1] * b[2] - a[2] * b[1];
+               result[1] = a[2] * b[0] - a[0] * b[2];
+               result[2] = a[0] * b[1] - a[1] * b[0];
+               result[3] = 1.0;
+               store_vector4( inst, machine, result );
+            }
+            break;
          case FP_OPCODE_X2D: /* 2-D matrix transform */
             {
                GLfloat a[4], b[4], c[4], result[4];