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radeonsi: fix interpolateAt opcodes for .zw components

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Not returning garbage in .zw seems pretty important.

This fixes:
GL45-CTS.shader_multisample_interpolation.render.interpolate_at_*_check.*

Cc: 11.2 12.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit 1b37e5541c)
This commit is contained in:
Marek Olšák 2016-10-04 22:33:03 +02:00 • committed by Emil Velikov
parent d16be6898b
commit 63c1a5d391
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/radeonsi/si_shader.c
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@ -5072,7 +5072,7 @@ static void build_interp_intrinsic(const struct lp_build_tgsi_action *action,
}
intr_name = interp_param ? "llvm.SI.fs.interp" : "llvm.SI.fs.constant";
for (chan = 0; chan < 2; chan++) {
for (chan = 0; chan < 4; chan++) {
LLVMValueRef args[4];
LLVMValueRef llvm_chan;
unsigned schan;