Fix for 58dc8b7: dest regions must not use HorzStride 0 in ExecSize 1

[mesa.git] / src / mesa / drivers / dri / i965 / brw_eu_emit.c

diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index 460521615c6e3a3f1a23a9e3809adb31c9d5ff89..58d97465d11961d25b65a53d51348caa836c1f9e 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -64,6 +64,8 @@ static void brw_set_dest( struct brw_instruction *insn,
 
       if (insn->header.access_mode == BRW_ALIGN_1) {
         insn->bits1.da1.dest_subreg_nr = dest.subnr;
+        if (dest.hstride == BRW_HORIZONTAL_STRIDE_0)
+           dest.hstride = BRW_HORIZONTAL_STRIDE_1;
         insn->bits1.da1.dest_horiz_stride = dest.hstride;
       }
       else {
@@ -78,6 +80,8 @@ static void brw_set_dest( struct brw_instruction *insn,
        */
       if (insn->header.access_mode == BRW_ALIGN_1) {
         insn->bits1.ia1.dest_indirect_offset = dest.dw1.bits.indirect_offset;
+        if (dest.hstride == BRW_HORIZONTAL_STRIDE_0)
+           dest.hstride = BRW_HORIZONTAL_STRIDE_1;
         insn->bits1.ia1.dest_horiz_stride = dest.hstride;
       }
       else {