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radeonsi: do not write non-existent components through the GSVS ring

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle 2016-12-02 21:20:49 +01:00
parent af976f12a5
commit edf034ac14
1 changed files with 4 additions and 2 deletions
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6
src/gallium/drivers/radeonsi/si_shader.c
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@ -5317,7 +5317,8 @@ static void si_llvm_emit_vertex(
ctx->soa.outputs[i];
for (chan = 0; chan < 4; chan++) {
if (((info->output_streams[i] >> (2 * chan)) & 3) != stream)
if (!(info->output_usagemask[i] & (1 << chan)) ||
((info->output_streams[i] >> (2 * chan)) & 3) != stream)
continue;
LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], "");
@ -6432,7 +6433,8 @@ si_generate_gs_copy_shader(struct si_screen *sscreen,
/* Fetch vertex data from GSVS ring */
for (i = 0; i < gsinfo->num_outputs; ++i) {
for (unsigned chan = 0; chan < 4; chan++) {
if (outputs[i].vertex_stream[chan] != stream) {
if (!(gsinfo->output_usagemask[i] & (1 << chan)) ||
outputs[i].vertex_stream[chan] != stream) {
outputs[i].values[chan] = ctx.soa.bld_base.base.undef;
continue;
}