r300: fragprog tex instruction now take writemask into acount.

diff --git a/src/mesa/drivers/dri/r300/r300_fragprog.c b/src/mesa/drivers/dri/r300/r300_fragprog.c
index cce8e685865f0b64c1fca00093df5ebab1fcbc01..78ed44b09c77802565241fbe8578b3eb23ae8df6 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog.c
@@ -951,6 +951,10 @@ static void emit_tex(struct r300_fragment_program *fp,
                if (REG_GET_TYPE(dest) == REG_TYPE_OUTPUT) {
                        rdest = dest;
                        dest = get_temp_reg_tex(fp);
+               } else if (fpi->DstReg.WriteMask != WRITEMASK_XYZW) {
+                       /* in case write mask isn't XYZW */
+                       rdest = dest;
+                       dest = get_temp_reg_tex(fp);
                }
                hwdest =
                    t_hw_dst(fp, dest, GL_TRUE,
@@ -1016,7 +1020,7 @@ static void emit_tex(struct r300_fragment_program *fp,
 
        /* Copy from temp to output if needed */
        if (REG_GET_VALID(rdest)) {
-               emit_arith(fp, PFS_OP_MAD, rdest, WRITEMASK_XYZW, dest,
+               emit_arith(fp, PFS_OP_MAD, rdest, fpi->DstReg.WriteMask, dest,
                           pfs_one, pfs_zero, 0);
                free_temp(fp, dest);
        }