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90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
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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 "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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namespace {
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std::size_t GetImageTypeNumCoordinates(Tegra::Shader::ImageType image_type) {
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switch (image_type) {
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case Tegra::Shader::ImageType::Texture1D:
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case Tegra::Shader::ImageType::TextureBuffer:
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return 1;
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case Tegra::Shader::ImageType::Texture1DArray:
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case Tegra::Shader::ImageType::Texture2D:
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return 2;
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case Tegra::Shader::ImageType::Texture2DArray:
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case Tegra::Shader::ImageType::Texture3D:
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return 3;
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}
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UNREACHABLE();
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return 1;
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}
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} // Anonymous namespace
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u32 ShaderIR::DecodeImage(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::SUST: {
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UNIMPLEMENTED_IF(instr.sust.mode != Tegra::Shader::SurfaceDataMode::P);
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UNIMPLEMENTED_IF(instr.sust.image_type == Tegra::Shader::ImageType::TextureBuffer);
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UNIMPLEMENTED_IF(instr.sust.out_of_bounds_store != Tegra::Shader::OutOfBoundsStore::Ignore);
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UNIMPLEMENTED_IF(instr.sust.component_mask_selector != 0xf); // Ensure we have an RGBA store
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std::vector<Node> values;
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constexpr std::size_t hardcoded_size{4};
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for (std::size_t i = 0; i < hardcoded_size; ++i) {
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values.push_back(GetRegister(instr.gpr0.Value() + i));
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}
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std::vector<Node> coords;
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const std::size_t num_coords{GetImageTypeNumCoordinates(instr.sust.image_type)};
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for (std::size_t i = 0; i < num_coords; ++i) {
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coords.push_back(GetRegister(instr.gpr8.Value() + i));
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}
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ASSERT(instr.sust.is_immediate);
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const auto& image{GetImage(instr.image, instr.sust.image_type)};
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MetaImage meta{image, values};
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const Node store{Operation(OperationCode::ImageStore, meta, std::move(coords))};
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bb.push_back(store);
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unhandled conversion instruction: {}", opcode->get().GetName());
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}
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return pc;
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}
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const Image& ShaderIR::GetImage(Tegra::Shader::Image image, Tegra::Shader::ImageType type) {
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const auto offset{static_cast<std::size_t>(image.index.Value())};
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// If this image has already been used, return the existing mapping.
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const auto itr{std::find_if(used_images.begin(), used_images.end(),
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[=](const Image& entry) { return entry.GetOffset() == offset; })};
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if (itr != used_images.end()) {
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ASSERT(itr->GetType() == type);
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return *itr;
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}
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// Otherwise create a new mapping for this image.
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const std::size_t next_index{used_images.size()};
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const Image entry{offset, next_index, type};
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return *used_images.emplace(entry).first;
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}
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} // namespace VideoCommon::Shader
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