mirror of https://git.suyu.dev/suyu/suyu
shader/decode: Split memory and texture instructions decoding
ReinUsesLisp
parent
c3471bf618
commit
48e6f77c03
@ -0,0 +1,525 @@
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// Copyright 2019 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <vector>
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#include <fmt/format.h>
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "video_core/engines/shader_bytecode.h"
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#include "video_core/shader/shader_ir.h"
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namespace VideoCommon::Shader {
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using Tegra::Shader::Instruction;
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using Tegra::Shader::OpCode;
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using Tegra::Shader::Register;
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using Tegra::Shader::TextureMiscMode;
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using Tegra::Shader::TextureProcessMode;
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using Tegra::Shader::TextureType;
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static std::size_t GetCoordCount(TextureType texture_type) {
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switch (texture_type) {
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case TextureType::Texture1D:
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return 1;
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case TextureType::Texture2D:
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return 2;
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case TextureType::Texture3D:
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case TextureType::TextureCube:
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return 3;
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default:
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UNIMPLEMENTED_MSG("Unhandled texture type: {}", static_cast<u32>(texture_type));
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return 0;
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}
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}
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u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
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const Instruction instr = {program_code[pc]};
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const auto opcode = OpCode::Decode(instr);
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switch (opcode->get().GetId()) {
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case OpCode::Id::TEX: {
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UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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if (instr.tex.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TEX.NODEP implementation is incomplete");
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}
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const TextureType texture_type{instr.tex.texture_type};
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const bool is_array = instr.tex.array != 0;
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const bool depth_compare = instr.tex.UsesMiscMode(TextureMiscMode::DC);
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const auto process_mode = instr.tex.GetTextureProcessMode();
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WriteTexInstructionFloat(
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bb, instr, GetTexCode(instr, texture_type, process_mode, depth_compare, is_array));
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break;
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}
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case OpCode::Id::TEXS: {
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const TextureType texture_type{instr.texs.GetTextureType()};
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const bool is_array{instr.texs.IsArrayTexture()};
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const bool depth_compare = instr.texs.UsesMiscMode(TextureMiscMode::DC);
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const auto process_mode = instr.texs.GetTextureProcessMode();
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if (instr.texs.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TEXS.NODEP implementation is incomplete");
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}
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const Node4 components =
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GetTexsCode(instr, texture_type, process_mode, depth_compare, is_array);
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if (instr.texs.fp32_flag) {
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WriteTexsInstructionFloat(bb, instr, components);
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} else {
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WriteTexsInstructionHalfFloat(bb, instr, components);
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}
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break;
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}
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case OpCode::Id::TLD4: {
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ASSERT(instr.tld4.array == 0);
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::NDV),
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"NDV is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::PTP),
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"PTP is not implemented");
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if (instr.tld4.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TLD4.NODEP implementation is incomplete");
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}
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const auto texture_type = instr.tld4.texture_type.Value();
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const bool depth_compare = instr.tld4.UsesMiscMode(TextureMiscMode::DC);
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const bool is_array = instr.tld4.array != 0;
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WriteTexInstructionFloat(bb, instr,
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GetTld4Code(instr, texture_type, depth_compare, is_array));
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break;
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}
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case OpCode::Id::TLD4S: {
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UNIMPLEMENTED_IF_MSG(instr.tld4s.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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if (instr.tld4s.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TLD4S.NODEP implementation is incomplete");
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}
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const bool depth_compare = instr.tld4s.UsesMiscMode(TextureMiscMode::DC);
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const Node op_a = GetRegister(instr.gpr8);
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const Node op_b = GetRegister(instr.gpr20);
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// TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
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std::vector<Node> coords;
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if (depth_compare) {
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// Note: TLD4S coordinate encoding works just like TEXS's
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const Node op_y = GetRegister(instr.gpr8.Value() + 1);
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coords.push_back(op_a);
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coords.push_back(op_y);
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coords.push_back(op_b);
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} else {
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coords.push_back(op_a);
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coords.push_back(op_b);
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}
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std::vector<Node> extras;
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extras.push_back(Immediate(static_cast<u32>(instr.tld4s.component)));
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const auto& sampler =
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GetSampler(instr.sampler, TextureType::Texture2D, false, depth_compare);
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Node4 values;
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for (u32 element = 0; element < values.size(); ++element) {
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auto coords_copy = coords;
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MetaTexture meta{sampler, {}, {}, extras, element};
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values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
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}
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WriteTexsInstructionFloat(bb, instr, values);
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break;
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}
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case OpCode::Id::TXQ: {
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if (instr.txq.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TXQ.NODEP implementation is incomplete");
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}
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// TODO: The new commits on the texture refactor, change the way samplers work.
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// Sadly, not all texture instructions specify the type of texture their sampler
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// uses. This must be fixed at a later instance.
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const auto& sampler =
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GetSampler(instr.sampler, Tegra::Shader::TextureType::Texture2D, false, false);
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u32 indexer = 0;
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switch (instr.txq.query_type) {
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case Tegra::Shader::TextureQueryType::Dimension: {
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for (u32 element = 0; element < 4; ++element) {
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if (!instr.txq.IsComponentEnabled(element)) {
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continue;
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}
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MetaTexture meta{sampler, {}, {}, {}, element};
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const Node value =
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Operation(OperationCode::TextureQueryDimensions, meta, GetRegister(instr.gpr8));
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SetTemporal(bb, indexer++, value);
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}
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for (u32 i = 0; i < indexer; ++i) {
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SetRegister(bb, instr.gpr0.Value() + i, GetTemporal(i));
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}
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unhandled texture query type: {}",
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static_cast<u32>(instr.txq.query_type.Value()));
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}
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break;
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}
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case OpCode::Id::TMML: {
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UNIMPLEMENTED_IF_MSG(instr.tmml.UsesMiscMode(Tegra::Shader::TextureMiscMode::NDV),
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"NDV is not implemented");
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if (instr.tmml.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TMML.NODEP implementation is incomplete");
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}
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auto texture_type = instr.tmml.texture_type.Value();
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const bool is_array = instr.tmml.array != 0;
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const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, false);
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std::vector<Node> coords;
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// TODO: Add coordinates for different samplers once other texture types are implemented.
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switch (texture_type) {
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case TextureType::Texture1D:
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coords.push_back(GetRegister(instr.gpr8));
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break;
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case TextureType::Texture2D:
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coords.push_back(GetRegister(instr.gpr8.Value() + 0));
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coords.push_back(GetRegister(instr.gpr8.Value() + 1));
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break;
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default:
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UNIMPLEMENTED_MSG("Unhandled texture type {}", static_cast<u32>(texture_type));
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// Fallback to interpreting as a 2D texture for now
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coords.push_back(GetRegister(instr.gpr8.Value() + 0));
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coords.push_back(GetRegister(instr.gpr8.Value() + 1));
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texture_type = TextureType::Texture2D;
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}
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for (u32 element = 0; element < 2; ++element) {
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auto params = coords;
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MetaTexture meta{sampler, {}, {}, {}, element};
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const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
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SetTemporal(bb, element, value);
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}
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for (u32 element = 0; element < 2; ++element) {
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SetRegister(bb, instr.gpr0.Value() + element, GetTemporal(element));
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}
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break;
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}
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case OpCode::Id::TLDS: {
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const Tegra::Shader::TextureType texture_type{instr.tlds.GetTextureType()};
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const bool is_array{instr.tlds.IsArrayTexture()};
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UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(TextureMiscMode::AOFFI),
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"AOFFI is not implemented");
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UNIMPLEMENTED_IF_MSG(instr.tlds.UsesMiscMode(TextureMiscMode::MZ), "MZ is not implemented");
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if (instr.tlds.UsesMiscMode(TextureMiscMode::NODEP)) {
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LOG_WARNING(HW_GPU, "TLDS.NODEP implementation is incomplete");
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}
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WriteTexsInstructionFloat(bb, instr, GetTldsCode(instr, texture_type, is_array));
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unhandled memory instruction: {}", opcode->get().GetName());
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}
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return pc;
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}
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const Sampler& ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler, TextureType type,
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bool is_array, bool is_shadow) {
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const auto offset = static_cast<std::size_t>(sampler.index.Value());
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// If this sampler has already been used, return the existing mapping.
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const auto itr =
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std::find_if(used_samplers.begin(), used_samplers.end(),
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[&](const Sampler& entry) { return entry.GetOffset() == offset; });
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if (itr != used_samplers.end()) {
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ASSERT(itr->GetType() == type && itr->IsArray() == is_array &&
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itr->IsShadow() == is_shadow);
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return *itr;
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}
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// Otherwise create a new mapping for this sampler
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const std::size_t next_index = used_samplers.size();
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const Sampler entry{offset, next_index, type, is_array, is_shadow};
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return *used_samplers.emplace(entry).first;
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}
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void ShaderIR::WriteTexInstructionFloat(NodeBlock& bb, Instruction instr, const Node4& components) {
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u32 dest_elem = 0;
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for (u32 elem = 0; elem < 4; ++elem) {
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if (!instr.tex.IsComponentEnabled(elem)) {
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// Skip disabled components
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continue;
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}
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SetTemporal(bb, dest_elem++, components[elem]);
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}
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// After writing values in temporals, move them to the real registers
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for (u32 i = 0; i < dest_elem; ++i) {
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SetRegister(bb, instr.gpr0.Value() + i, GetTemporal(i));
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}
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}
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void ShaderIR::WriteTexsInstructionFloat(NodeBlock& bb, Instruction instr,
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const Node4& components) {
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// TEXS has two destination registers and a swizzle. The first two elements in the swizzle
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// go into gpr0+0 and gpr0+1, and the rest goes into gpr28+0 and gpr28+1
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u32 dest_elem = 0;
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for (u32 component = 0; component < 4; ++component) {
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if (!instr.texs.IsComponentEnabled(component))
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continue;
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SetTemporal(bb, dest_elem++, components[component]);
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}
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for (u32 i = 0; i < dest_elem; ++i) {
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if (i < 2) {
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// Write the first two swizzle components to gpr0 and gpr0+1
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SetRegister(bb, instr.gpr0.Value() + i % 2, GetTemporal(i));
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} else {
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ASSERT(instr.texs.HasTwoDestinations());
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// Write the rest of the swizzle components to gpr28 and gpr28+1
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SetRegister(bb, instr.gpr28.Value() + i % 2, GetTemporal(i));
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}
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}
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}
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void ShaderIR::WriteTexsInstructionHalfFloat(NodeBlock& bb, Instruction instr,
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const Node4& components) {
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// TEXS.F16 destionation registers are packed in two registers in pairs (just like any half
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// float instruction).
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Node4 values;
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u32 dest_elem = 0;
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for (u32 component = 0; component < 4; ++component) {
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if (!instr.texs.IsComponentEnabled(component))
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continue;
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values[dest_elem++] = components[component];
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}
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if (dest_elem == 0)
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return;
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std::generate(values.begin() + dest_elem, values.end(), [&]() { return Immediate(0); });
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const Node first_value = Operation(OperationCode::HPack2, values[0], values[1]);
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if (dest_elem <= 2) {
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SetRegister(bb, instr.gpr0, first_value);
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return;
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}
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SetTemporal(bb, 0, first_value);
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SetTemporal(bb, 1, Operation(OperationCode::HPack2, values[2], values[3]));
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SetRegister(bb, instr.gpr0, GetTemporal(0));
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SetRegister(bb, instr.gpr28, GetTemporal(1));
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}
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Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
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TextureProcessMode process_mode, std::vector<Node> coords,
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Node array, Node depth_compare, u32 bias_offset) {
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const bool is_array = array;
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const bool is_shadow = depth_compare;
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UNIMPLEMENTED_IF_MSG((texture_type == TextureType::Texture3D && (is_array || is_shadow)) ||
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(texture_type == TextureType::TextureCube && is_array && is_shadow),
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"This method is not supported.");
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const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, is_shadow);
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const bool lod_needed = process_mode == TextureProcessMode::LZ ||
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process_mode == TextureProcessMode::LL ||
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process_mode == TextureProcessMode::LLA;
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// LOD selection (either via bias or explicit textureLod) not supported in GL for
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// sampler2DArrayShadow and samplerCubeArrayShadow.
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const bool gl_lod_supported =
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!((texture_type == Tegra::Shader::TextureType::Texture2D && is_array && is_shadow) ||
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(texture_type == Tegra::Shader::TextureType::TextureCube && is_array && is_shadow));
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const OperationCode read_method =
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lod_needed && gl_lod_supported ? OperationCode::TextureLod : OperationCode::Texture;
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UNIMPLEMENTED_IF(process_mode != TextureProcessMode::None && !gl_lod_supported);
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std::vector<Node> extras;
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if (process_mode != TextureProcessMode::None && gl_lod_supported) {
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if (process_mode == TextureProcessMode::LZ) {
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extras.push_back(Immediate(0.0f));
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} else {
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// If present, lod or bias are always stored in the register indexed by the gpr20
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// field with an offset depending on the usage of the other registers
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extras.push_back(GetRegister(instr.gpr20.Value() + bias_offset));
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}
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}
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Node4 values;
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for (u32 element = 0; element < values.size(); ++element) {
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auto copy_coords = coords;
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MetaTexture meta{sampler, array, depth_compare, extras, element};
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values[element] = Operation(read_method, meta, std::move(copy_coords));
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}
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return values;
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}
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Node4 ShaderIR::GetTexCode(Instruction instr, TextureType texture_type,
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TextureProcessMode process_mode, bool depth_compare, bool is_array) {
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const bool lod_bias_enabled =
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(process_mode != TextureProcessMode::None && process_mode != TextureProcessMode::LZ);
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const auto [coord_count, total_coord_count] = ValidateAndGetCoordinateElement(
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texture_type, depth_compare, is_array, lod_bias_enabled, 4, 5);
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// If enabled arrays index is always stored in the gpr8 field
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const u64 array_register = instr.gpr8.Value();
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// First coordinate index is the gpr8 or gpr8 + 1 when arrays are used
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const u64 coord_register = array_register + (is_array ? 1 : 0);
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std::vector<Node> coords;
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for (std::size_t i = 0; i < coord_count; ++i) {
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coords.push_back(GetRegister(coord_register + i));
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}
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// 1D.DC in OpenGL the 2nd component is ignored.
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if (depth_compare && !is_array && texture_type == TextureType::Texture1D) {
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coords.push_back(Immediate(0.0f));
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}
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const Node array = is_array ? GetRegister(array_register) : nullptr;
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Node dc{};
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if (depth_compare) {
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// Depth is always stored in the register signaled by gpr20 or in the next register if lod
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// or bias are used
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const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
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dc = GetRegister(depth_register);
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}
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return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, 0);
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}
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Node4 ShaderIR::GetTexsCode(Instruction instr, TextureType texture_type,
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TextureProcessMode process_mode, bool depth_compare, bool is_array) {
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const bool lod_bias_enabled =
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(process_mode != TextureProcessMode::None && process_mode != TextureProcessMode::LZ);
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const auto [coord_count, total_coord_count] = ValidateAndGetCoordinateElement(
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texture_type, depth_compare, is_array, lod_bias_enabled, 4, 4);
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// If enabled arrays index is always stored in the gpr8 field
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const u64 array_register = instr.gpr8.Value();
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// First coordinate index is stored in gpr8 field or (gpr8 + 1) when arrays are used
|
||||
const u64 coord_register = array_register + (is_array ? 1 : 0);
|
||||
const u64 last_coord_register =
|
||||
(is_array || !(lod_bias_enabled || depth_compare) || (coord_count > 2))
|
||||
? static_cast<u64>(instr.gpr20.Value())
|
||||
: coord_register + 1;
|
||||
const u32 bias_offset = coord_count > 2 ? 1 : 0;
|
||||
|
||||
std::vector<Node> coords;
|
||||
for (std::size_t i = 0; i < coord_count; ++i) {
|
||||
const bool last = (i == (coord_count - 1)) && (coord_count > 1);
|
||||
coords.push_back(GetRegister(last ? last_coord_register : coord_register + i));
|
||||
}
|
||||
|
||||
const Node array = is_array ? GetRegister(array_register) : nullptr;
|
||||
|
||||
Node dc{};
|
||||
if (depth_compare) {
|
||||
// Depth is always stored in the register signaled by gpr20 or in the next register if lod
|
||||
// or bias are used
|
||||
const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
|
||||
dc = GetRegister(depth_register);
|
||||
}
|
||||
|
||||
return GetTextureCode(instr, texture_type, process_mode, coords, array, dc, bias_offset);
|
||||
}
|
||||
|
||||
Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool depth_compare,
|
||||
bool is_array) {
|
||||
const std::size_t coord_count = GetCoordCount(texture_type);
|
||||
const std::size_t total_coord_count = coord_count + (is_array ? 1 : 0);
|
||||
const std::size_t total_reg_count = total_coord_count + (depth_compare ? 1 : 0);
|
||||
|
||||
// If enabled arrays index is always stored in the gpr8 field
|
||||
const u64 array_register = instr.gpr8.Value();
|
||||
// First coordinate index is the gpr8 or gpr8 + 1 when arrays are used
|
||||
const u64 coord_register = array_register + (is_array ? 1 : 0);
|
||||
|
||||
std::vector<Node> coords;
|
||||
for (size_t i = 0; i < coord_count; ++i)
|
||||
coords.push_back(GetRegister(coord_register + i));
|
||||
|
||||
const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, depth_compare);
|
||||
|
||||
Node4 values;
|
||||
for (u32 element = 0; element < values.size(); ++element) {
|
||||
auto coords_copy = coords;
|
||||
MetaTexture meta{sampler, GetRegister(array_register), {}, {}, element};
|
||||
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
|
||||
}
|
||||
|
||||
return values;
|
||||
}
|
||||
|
||||
Node4 ShaderIR::GetTldsCode(Instruction instr, TextureType texture_type, bool is_array) {
|
||||
const std::size_t type_coord_count = GetCoordCount(texture_type);
|
||||
const bool lod_enabled = instr.tlds.GetTextureProcessMode() == TextureProcessMode::LL;
|
||||
|
||||
// If enabled arrays index is always stored in the gpr8 field
|
||||
const u64 array_register = instr.gpr8.Value();
|
||||
// if is array gpr20 is used
|
||||
const u64 coord_register = is_array ? instr.gpr20.Value() : instr.gpr8.Value();
|
||||
|
||||
const u64 last_coord_register =
|
||||
((type_coord_count > 2) || (type_coord_count == 2 && !lod_enabled)) && !is_array
|
||||
? static_cast<u64>(instr.gpr20.Value())
|
||||
: coord_register + 1;
|
||||
|
||||
std::vector<Node> coords;
|
||||
for (std::size_t i = 0; i < type_coord_count; ++i) {
|
||||
const bool last = (i == (type_coord_count - 1)) && (type_coord_count > 1);
|
||||
coords.push_back(GetRegister(last ? last_coord_register : coord_register + i));
|
||||
}
|
||||
|
||||
const Node array = is_array ? GetRegister(array_register) : nullptr;
|
||||
// When lod is used always is in gpr20
|
||||
const Node lod = lod_enabled ? GetRegister(instr.gpr20) : Immediate(0);
|
||||
|
||||
const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, false);
|
||||
|
||||
Node4 values;
|
||||
for (u32 element = 0; element < values.size(); ++element) {
|
||||
auto coords_copy = coords;
|
||||
MetaTexture meta{sampler, array, {}, {lod}, element};
|
||||
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
|
||||
}
|
||||
return values;
|
||||
}
|
||||
|
||||
std::tuple<std::size_t, std::size_t> ShaderIR::ValidateAndGetCoordinateElement(
|
||||
TextureType texture_type, bool depth_compare, bool is_array, bool lod_bias_enabled,
|
||||
std::size_t max_coords, std::size_t max_inputs) {
|
||||
const std::size_t coord_count = GetCoordCount(texture_type);
|
||||
|
||||
std::size_t total_coord_count = coord_count + (is_array ? 1 : 0) + (depth_compare ? 1 : 0);
|
||||
const std::size_t total_reg_count = total_coord_count + (lod_bias_enabled ? 1 : 0);
|
||||
if (total_coord_count > max_coords || total_reg_count > max_inputs) {
|
||||
UNIMPLEMENTED_MSG("Unsupported Texture operation");
|
||||
total_coord_count = std::min(total_coord_count, max_coords);
|
||||
}
|
||||
// 1D.DC OpenGL is using a vec3 but 2nd component is ignored later.
|
||||
total_coord_count +=
|
||||
(depth_compare && !is_array && texture_type == TextureType::Texture1D) ? 1 : 0;
|
||||
|
||||
return {coord_count, total_coord_count};
|
||||
}
|
||||
|
||||
} // namespace VideoCommon::Shader
|
||||
Loading…
Reference in New Issue