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authorChris Forbes <chrisf@ijw.co.nz>2013-07-14 18:30:52 +1200
committerChris Forbes <chrisf@ijw.co.nz>2013-07-16 19:08:41 +1200
commit121ea0b38bfee093e0bde0ff1443fc2efec688b0 (patch)
treefbc1738c9b93fe9d5dd310699c02615db2ee77cc /src
parente4fdf1b008ce29c5b5a52985c586b61f35d31e4c (diff)
i965/Gen4: Zero extra coordinates for ir_tex
We always emit U,V,R coordinates for this message, but the sampler gets very angry if we pass garbage in the R coordinate for at least some texture formats. Fill the remaining coordinates with zero instead. Fixes broken rendering on GM45 in Source games, and in VDrift. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65236 NOTE: This is a candidate for stable branches. Signed-off-by: Chris Forbes <chrisf@ijw.co.nz> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_visitor.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index fc7ae582990..15d1c6a6985 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -891,6 +891,10 @@ fs_visitor::emit_texture_gen4(ir_texture *ir, fs_reg dst, fs_reg coordinate,
emit(MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate));
coordinate.reg_offset++;
}
+ /* zero the others. */
+ for (int i = ir->coordinate->type->vector_elements; i<3; i++) {
+ emit(MOV(fs_reg(MRF, base_mrf + mlen + i), fs_reg(0.0f)));
+ }
/* gen4's SIMD8 sampler always has the slots for u,v,r present. */
mlen += 3;
} else if (ir->op == ir_txd) {