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radv/gfx10: make use the output usage mask when exporting NGG GS params

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It shouldn't matter much because output varyings should have been
compacted during NIR shader linking but it mirrors what the driver
does when emitting NGG GS vertex parameters.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-09-06 10:34:35 +02:00
parent b1a872f0c0
commit c6be5cefba
1 changed files with 8 additions and 3 deletions
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11
src/amd/vulkan/radv_nir_to_llvm.c
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@ -3489,16 +3489,21 @@ static void gfx10_ngg_gs_emit_epilogue_2(struct radv_shader_context *ctx)
unsigned out_idx = 0;
gep_idx[1] = ctx->ac.i32_0;
for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) {
unsigned output_usage_mask =
ctx->shader_info->gs.output_usage_mask[i];
int length = util_last_bit(output_usage_mask);
if (!(ctx->output_mask & (1ull << i)))
continue;
outputs[noutput].slot_name = i;
outputs[noutput].slot_index = i == VARYING_SLOT_CLIP_DIST1;
outputs[noutput].usage_mask = ctx->shader_info->gs.output_usage_mask[i];
int length = util_last_bit(outputs[noutput].usage_mask);
outputs[noutput].usage_mask = output_usage_mask;
for (unsigned j = 0; j < length; j++, out_idx++) {
if (!(output_usage_mask & (1 << j)))
continue;
gep_idx[2] = LLVMConstInt(ctx->ac.i32, out_idx, false);
tmp = LLVMBuildGEP(builder, vertexptr, gep_idx, 3, "");
tmp = LLVMBuildLoad(builder, tmp, "");