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swr: only broadcast color0 value, not all color values 

The way that dual-source blending is described for GLES2 is very odd,
and we end up with a shader that both has this property set *and* has a
color1 value to be used as the second source. While changing the state
tracker is an option, it seems more reliable to verify that the
broadcast is only done on color0.

Fixes arb_blend_func_extended-fbo-extended-blend-pattern_gles2

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>
This commit is contained in:
Ilia Mirkin 2016-11-20 19:08:12 -05:00
parent 2234a4330e
commit 37be598dda
1 changed files with 2 additions and 1 deletions
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3
src/gallium/drivers/swr/swr_shader.cpp
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@ -645,7 +645,8 @@ BuilderSWR::CompileFS(struct swr_context *ctx, swr_jit_fs_key &key)
LLVMValueRef out =
LLVMBuildLoad(gallivm->builder, outputs[attrib][channel], "");
if (swr_fs->info.base.properties[TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS]) {
if (swr_fs->info.base.properties[TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS] &&
swr_fs->info.base.output_semantic_index[attrib] == 0) {
for (uint32_t rt = 0; rt < key.nr_cbufs; rt++) {
STORE(unwrap(out),
pPS,