diff options
| author | Dave Airlie <[email protected]> | 2017-02-23 16:06:22 +1000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2017-02-24 10:31:53 +1000 |
| commit | ccb70d6f53464171639ee7809c9fe5ee3a86e54d (patch) | |
| tree | 58d39b492985540193b65e5ae22464986accc3a7 /src/amd/common | |
| parent | 8282c5c7710fb56231ea0e1b9d7b0f9295230e15 (diff) | |
radv: add sample mask output support
This adds support to write to sample mask from the fragment shader.
We can optimise this later like radeonsi.
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src/amd/common')
| -rw-r--r-- | src/amd/common/ac_nir_to_llvm.c | 8 | ||||
| -rw-r--r-- | src/amd/common/ac_nir_to_llvm.h | 1 |
2 files changed, 7 insertions, 2 deletions
diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c index 60216473642..9778581a1ef 100644 --- a/src/amd/common/ac_nir_to_llvm.c +++ b/src/amd/common/ac_nir_to_llvm.c @@ -4753,13 +4753,17 @@ handle_fs_outputs_post(struct nir_to_llvm_context *ctx) ctx->shader_info->fs.writes_stencil = true; stencil = to_float(ctx, LLVMBuildLoad(ctx->builder, ctx->outputs[radeon_llvm_reg_index_soa(i, 0)], "")); + } else if (i == FRAG_RESULT_SAMPLE_MASK) { + ctx->shader_info->fs.writes_sample_mask = true; + samplemask = to_float(ctx, LLVMBuildLoad(ctx->builder, + ctx->outputs[radeon_llvm_reg_index_soa(i, 0)], "")); } else { bool last = false; for (unsigned j = 0; j < 4; j++) values[j] = to_float(ctx, LLVMBuildLoad(ctx->builder, ctx->outputs[radeon_llvm_reg_index_soa(i, j)], "")); - if (!ctx->shader_info->fs.writes_z && !ctx->shader_info->fs.writes_stencil) + if (!ctx->shader_info->fs.writes_z && !ctx->shader_info->fs.writes_stencil && !ctx->shader_info->fs.writes_sample_mask) last = ctx->output_mask <= ((1ull << (i + 1)) - 1); si_export_mrt_color(ctx, values, V_008DFC_SQ_EXP_MRT + index, last); @@ -4767,7 +4771,7 @@ handle_fs_outputs_post(struct nir_to_llvm_context *ctx) } } - if (depth || stencil) + if (depth || stencil || samplemask) si_export_mrt_z(ctx, depth, stencil, samplemask); else if (!index) si_export_mrt_color(ctx, NULL, V_008DFC_SQ_EXP_NULL, true); diff --git a/src/amd/common/ac_nir_to_llvm.h b/src/amd/common/ac_nir_to_llvm.h index c2662e2fe9c..6c2b78b4e71 100644 --- a/src/amd/common/ac_nir_to_llvm.h +++ b/src/amd/common/ac_nir_to_llvm.h @@ -118,6 +118,7 @@ struct ac_shader_variant_info { bool can_discard; bool writes_z; bool writes_stencil; + bool writes_sample_mask; bool early_fragment_test; bool writes_memory; bool force_persample; |