diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_emit.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c index b3cf524c63..5f29ca1cd4 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_emit.c +++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c @@ -588,17 +588,19 @@ static void emit_dph( struct brw_compile *p, const struct brw_reg *arg0, const struct brw_reg *arg1 ) { + const int dst_chan = _mesa_ffs(mask & WRITEMASK_XYZW) - 1; + if (!(mask & WRITEMASK_XYZW)) return; /* Do not emit dead code */ - assert((mask & WRITEMASK_XYZW) == WRITEMASK_X); + assert(is_power_of_two(mask & WRITEMASK_XYZW)); brw_MUL(p, brw_null_reg(), arg0[0], arg1[0]); brw_MAC(p, brw_null_reg(), arg0[1], arg1[1]); - brw_MAC(p, dst[0], arg0[2], arg1[2]); + brw_MAC(p, dst[dst_chan], arg0[2], arg1[2]); brw_set_saturate(p, (mask & SATURATE) ? 1 : 0); - brw_ADD(p, dst[0], dst[0], arg1[3]); + brw_ADD(p, dst[dst_chan], dst[dst_chan], arg1[3]); brw_set_saturate(p, 0); } |