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| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-03-24 01:33:45 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:24 -0400 |
| commit | 68a9505d8a1d00c6ba2739bc0af3069cf87b9b84 (patch) | |
| tree | b9a78497cd8af1d73a7eda34cd0df08b3dc324e6 /src/shader_recompiler/backend/spirv/emit_spirv_special.cpp | |
| parent | 1d2db783986717c912709ccea4a18d9b8f396ee1 (diff) | |
shader: Implement NDC [-1, 1], attribute types and default varying initialization
Diffstat (limited to 'src/shader_recompiler/backend/spirv/emit_spirv_special.cpp')
| -rw-r--r-- | src/shader_recompiler/backend/spirv/emit_spirv_special.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp new file mode 100644 index 0000000000..70ae7b51ee --- /dev/null +++ b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp @@ -0,0 +1,35 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "shader_recompiler/backend/spirv/emit_spirv.h" + +namespace Shader::Backend::SPIRV { + +void EmitPrologue(EmitContext& ctx) { + if (ctx.stage == Stage::VertexB) { + const Id zero{ctx.Constant(ctx.F32[1], 0.0f)}; + const Id one{ctx.Constant(ctx.F32[1], 1.0f)}; + const Id null_vector{ctx.ConstantComposite(ctx.F32[4], zero, zero, zero, zero)}; + ctx.OpStore(ctx.output_position, ctx.ConstantComposite(ctx.F32[4], zero, zero, zero, one)); + for (const Id generic_id : ctx.output_generics) { + if (Sirit::ValidId(generic_id)) { + ctx.OpStore(generic_id, null_vector); + } + } + } +} + +void EmitEpilogue(EmitContext& ctx) { + if (ctx.profile.convert_depth_mode) { + const Id type{ctx.F32[1]}; + const Id position{ctx.OpLoad(ctx.F32[4], ctx.output_position)}; + const Id z{ctx.OpCompositeExtract(type, position, 2u)}; + const Id w{ctx.OpCompositeExtract(type, position, 3u)}; + const Id screen_depth{ctx.OpFMul(type, ctx.OpFAdd(type, z, w), ctx.Constant(type, 0.5f))}; + const Id vector{ctx.OpCompositeInsert(ctx.F32[4], screen_depth, position, 2u)}; + ctx.OpStore(ctx.output_position, vector); + } +} + +} // namespace Shader::Backend::SPIRV |