diff options
| author | Tom Stellard <[email protected]> | 2013-05-20 08:05:03 -0700 |
|---|---|---|
| committer | Tom Stellard <[email protected]> | 2013-06-30 21:41:57 -0700 |
| commit | 38677efa3968e6fa063792de972e5b10cc9ed4f1 (patch) | |
| tree | b992769f8d1a79736acb27f4b304be194ea4a676 | |
| parent | 18a04f50de1b7da9663ebbb73380f2fced223b1e (diff) | |
r300g/compiler: Prevent regalloc from swizzling texture operands v2
https://bugs.freedesktop.org/show_bug.cgi?id=63520
NOTE: This is a candidate for the stable branches.
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
(cherry picked from commit 24fa43675f32bc81c7252f3ddce4c80ed8c7737d)
| -rw-r--r-- | src/gallium/drivers/r300/compiler/radeon_pair_regalloc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/compiler/radeon_pair_regalloc.c b/src/gallium/drivers/r300/compiler/radeon_pair_regalloc.c index 6442e0dca80..1970a346d1d 100644 --- a/src/gallium/drivers/r300/compiler/radeon_pair_regalloc.c +++ b/src/gallium/drivers/r300/compiler/radeon_pair_regalloc.c @@ -383,6 +383,14 @@ static enum rc_reg_class variable_get_class( RC_INSTRUCTION_PAIR ) { old_swizzle = r.U.P.Arg->Swizzle; } else { + /* Source operands of TEX + * instructions can't be + * swizzle on r300/r400 GPUs. + */ + if (!variable->C->is_r500) { + can_change_writemask = 0; + break; + } old_swizzle = r.U.I.Src->Swizzle; } new_swizzle = rc_adjust_channels( |