From 68a9505d8a1d00c6ba2739bc0af3069cf87b9b84 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Wed, 24 Mar 2021 01:33:45 -0300 Subject: shader: Implement NDC [-1, 1], attribute types and default varying initialization --- .../backend/spirv/emit_spirv_special.cpp | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 src/shader_recompiler/backend/spirv/emit_spirv_special.cpp (limited to 'src/shader_recompiler/backend/spirv/emit_spirv_special.cpp') 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 000000000..70ae7b51e --- /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 -- cgit v1.2.3