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radv: make use of the output usage mask in GS copy shader

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This is just for consistency because LLVM can detect and
remove unused loads.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2018-09-13 15:57:58 +02:00
parent f398595dca
commit fbc064a5b4
1 changed files with 3 additions and 0 deletions
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3
src/amd/vulkan/radv_nir_to_llvm.c
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@ -3609,6 +3609,9 @@ ac_gs_copy_shader_emit(struct radv_shader_context *ctx)
for (unsigned j = 0; j < length; j++) {
LLVMValueRef value, soffset;
if (!(output_usage_mask & (1 << j)))
continue;
soffset = LLVMConstInt(ctx->ac.i32,
(slot * 4 + j) *
ctx->gs_max_out_vertices * 16 * 4, false);