[D3D12] Remove the HLSL shader translator
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Triang3l
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/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2018 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_GPU_HLSL_SHADER_TRANSLATOR_H_
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#define XENIA_GPU_HLSL_SHADER_TRANSLATOR_H_
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#include <vector>
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#include "xenia/base/string_buffer.h"
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#include "xenia/gpu/shader_translator.h"
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namespace xe {
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namespace gpu {
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// For shader model 5_1 (Direct3D 12).
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class HlslShaderTranslator : public ShaderTranslator {
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public:
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HlslShaderTranslator();
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~HlslShaderTranslator() override;
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struct SystemConstants {
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// vec4 0
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float mul_rcp_w[3];
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uint32_t vertex_base_index;
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// vec4 1
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float ndc_scale[3];
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uint32_t vertex_index_endian;
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// vec4 2
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float ndc_offset[3];
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float pixel_half_pixel_offset;
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// vec4 3
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float point_size[2];
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float ssaa_inv_scale[2];
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// vec3 4
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uint32_t pixel_pos_reg;
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// 0 - disabled, 1 - passes if in range, -1 - fails if in range.
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int32_t alpha_test;
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// The range is floats as uints so it's easier to pass infinity.
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uint32_t alpha_test_range[2];
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// vec4 5
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float color_exp_bias[4];
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// vec4 6
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uint32_t color_output_map[4];
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};
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struct TextureSRV {
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uint32_t fetch_constant;
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TextureDimension dimension;
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};
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const TextureSRV* GetTextureSRVs(uint32_t& count_out) const {
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count_out = texture_srv_count_;
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return texture_srvs_;
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}
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const uint32_t* GetSamplerFetchConstants(uint32_t& count_out) const {
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count_out = sampler_count_;
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return sampler_fetch_constants_;
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}
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protected:
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void Reset() override;
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void EmitTranslationError(const char* message) override;
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void EmitUnimplementedTranslationError() override;
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void StartTranslation() override;
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std::vector<uint8_t> CompleteTranslation() override;
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void ProcessLabel(uint32_t cf_index) override;
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void ProcessControlFlowNopInstruction(uint32_t cf_index) override;
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void ProcessExecInstructionBegin(const ParsedExecInstruction& instr) override;
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void ProcessExecInstructionEnd(const ParsedExecInstruction& instr) override;
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void ProcessLoopStartInstruction(
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const ParsedLoopStartInstruction& instr) override;
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void ProcessLoopEndInstruction(
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const ParsedLoopEndInstruction& instr) override;
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void ProcessCallInstruction(const ParsedCallInstruction& instr) override;
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void ProcessReturnInstruction(const ParsedReturnInstruction& instr) override;
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void ProcessJumpInstruction(const ParsedJumpInstruction& instr) override;
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void ProcessAllocInstruction(const ParsedAllocInstruction& instr) override;
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void ProcessVertexFetchInstruction(
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const ParsedVertexFetchInstruction& instr) override;
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void ProcessTextureFetchInstruction(
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const ParsedTextureFetchInstruction& instr) override;
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void ProcessAluInstruction(const ParsedAluInstruction& instr) override;
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private:
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void Indent();
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void Unindent();
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// Returns whether a new conditional was emitted.
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bool BeginPredicatedInstruction(bool is_predicated, bool predicate_condition);
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void EndPredicatedInstruction(bool conditional_emitted);
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void EmitLoadOperand(size_t src_index, const InstructionOperand& op);
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void EmitStoreResult(const InstructionResult& result, bool source_is_scalar);
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StringBuffer source_inner_;
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uint32_t depth_ = 0;
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char depth_prefix_[32] = {0};
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bool cf_exec_pred_ = false;
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bool cf_exec_pred_cond_ = false;
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bool writes_depth_ = false;
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// Up to 32 2D array textures, 32 3D textures and 32 cube textures.
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TextureSRV texture_srvs_[96];
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uint32_t texture_srv_count_ = 0;
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// Finds or adds a texture binding to the shader's SRV list, returns t# index.
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uint32_t AddTextureSRV(uint32_t fetch_constant, TextureDimension dimension);
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// Sampler index -> fetch constant index mapping.
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// TODO(Triang3l): On binding tier 1 (Nvidia Fermi), there can't be more than
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// 16 samplers in a shader. Hopefully no game uses so many.
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uint32_t sampler_fetch_constants_[32];
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uint32_t sampler_count_ = 0;
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uint32_t AddSampler(uint32_t fetch_constant);
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void ProcessVectorAluInstruction(const ParsedAluInstruction& instr);
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void ProcessScalarAluInstruction(const ParsedAluInstruction& instr);
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// Whether the cube instruction has been used and conversion functions need to
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// be emitted.
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bool cube_used_ = false;
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};
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} // namespace gpu
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} // namespace xe
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#endif // XENIA_GPU_HLSL_SHADER_TRANSLATOR_H_
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