fix using a tmp without asking for one

diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 9153ab60f4110becd2d5aa3e7efbe47eba1b9ae6..e5263916b8c3bb5e1d09c858ad35ad3e64c5dc3c 100644 (file)
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -757,6 +757,7 @@ static struct ureg emit_combine( struct texenv_fragment_program *p,
        * result = tmp - .5
        */
       half = get_half(p);
+      tmp = get_temp( p );
       emit_arith( p, OPCODE_ADD, tmp, mask, 0, src[0], src[1], undef );
       emit_arith( p, OPCODE_SUB, dest, mask, saturate, tmp, half, undef );
       return dest;