Since high bits can be used for flags, mask them out.

This stops arbvpwarpmesh from segfaulting and it actually works - with immediate mode rendering.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_vertexprog.c b/src/mesa/drivers/dri/r300/r300_vertexprog.c
index 6f1cd9fcac..f4b0d4109a 100644
--- a/src/mesa/drivers/dri/r300/r300_vertexprog.c
+++ b/src/mesa/drivers/dri/r300/r300_vertexprog.c
@@ -39,6 +39,7 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #define SCALAR_FLAG (1<<31)
 #define FLAG_MASK (1<<31)
+#define OP_MASK	(0xf)  /* we are unlikely to have more than 15 */
 #define OPN(operator, ip, op) {#operator, VP_OPCODE_##operator, ip, op}
 
 struct{
@@ -430,7 +431,7 @@ static unsigned long op_operands(enum vp_opcode opcode)
 	/* Can we trust mesas opcodes to be in order ? */
 	for(i=0; i < sizeof(op_names) / sizeof(*op_names); i++)
 		if(op_names[i].opcode == opcode)
-			return op_names[i].ip;
+			return op_names[i].ip & OP_MASK;
 	
 	fprintf(stderr, "op %d not found in op_names\n", opcode);
 	exit(-1);