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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <vector>
#include <fmt/format.h>
#include "common/assert.h"
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "video_core/engines/shader_bytecode.h"
#include "video_core/shader/node_helper.h"
#include "video_core/shader/shader_ir.h"
namespace VideoCommon::Shader {
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
namespace {
std::size_t GetImageTypeNumCoordinates(Tegra::Shader::ImageType image_type) {
switch (image_type) {
case Tegra::Shader::ImageType::Texture1D:
case Tegra::Shader::ImageType::TextureBuffer:
return 1;
case Tegra::Shader::ImageType::Texture1DArray:
case Tegra::Shader::ImageType::Texture2D:
return 2;
case Tegra::Shader::ImageType::Texture2DArray:
case Tegra::Shader::ImageType::Texture3D:
return 3;
}
UNREACHABLE();
return 1;
}
} // Anonymous namespace
u32 ShaderIR::DecodeImage(NodeBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
switch (opcode->get().GetId()) {
case OpCode::Id::SUST: {
UNIMPLEMENTED_IF(instr.sust.mode != Tegra::Shader::SurfaceDataMode::P);
UNIMPLEMENTED_IF(instr.sust.image_type == Tegra::Shader::ImageType::TextureBuffer);
UNIMPLEMENTED_IF(instr.sust.out_of_bounds_store != Tegra::Shader::OutOfBoundsStore::Ignore);
UNIMPLEMENTED_IF(instr.sust.component_mask_selector != 0xf); // Ensure we have an RGBA store
std::vector<Node> values;
constexpr std::size_t hardcoded_size{4};
for (std::size_t i = 0; i < hardcoded_size; ++i) {
values.push_back(GetRegister(instr.gpr0.Value() + i));
}
std::vector<Node> coords;
const std::size_t num_coords{GetImageTypeNumCoordinates(instr.sust.image_type)};
for (std::size_t i = 0; i < num_coords; ++i) {
coords.push_back(GetRegister(instr.gpr8.Value() + i));
}
const auto type{instr.sust.image_type};
const auto& image{instr.sust.is_immediate ? GetImage(instr.image, type)
: GetBindlessImage(instr.gpr39, type)};
MetaImage meta{image, values};
const Node store{Operation(OperationCode::ImageStore, meta, std::move(coords))};
bb.push_back(store);
break;
}
default:
UNIMPLEMENTED_MSG("Unhandled conversion instruction: {}", opcode->get().GetName());
}
return pc;
}
const Image& ShaderIR::GetImage(Tegra::Shader::Image image, Tegra::Shader::ImageType type) {
const auto offset{static_cast<std::size_t>(image.index.Value())};
// If this image has already been used, return the existing mapping.
const auto itr{std::find_if(used_images.begin(), used_images.end(),
[=](const Image& entry) { return entry.GetOffset() == offset; })};
if (itr != used_images.end()) {
ASSERT(itr->GetType() == type);
return *itr;
}
// Otherwise create a new mapping for this image.
const std::size_t next_index{used_images.size()};
const Image entry{offset, next_index, type};
return *used_images.emplace(entry).first;
}
const Image& ShaderIR::GetBindlessImage(Tegra::Shader::Register reg,
Tegra::Shader::ImageType type) {
const Node image_register{GetRegister(reg)};
const Node base_image{
TrackCbuf(image_register, global_code, static_cast<s64>(global_code.size()))};
const auto cbuf{std::get_if<CbufNode>(&*base_image)};
const auto cbuf_offset_imm{std::get_if<ImmediateNode>(&*cbuf->GetOffset())};
const auto cbuf_offset{cbuf_offset_imm->GetValue()};
const auto cbuf_index{cbuf->GetIndex()};
const auto cbuf_key{(static_cast<u64>(cbuf_index) << 32) | static_cast<u64>(cbuf_offset)};
// If this image has already been used, return the existing mapping.
const auto itr{std::find_if(used_images.begin(), used_images.end(),
[=](const Image& entry) { return entry.GetOffset() == cbuf_key; })};
if (itr != used_images.end()) {
ASSERT(itr->GetType() == type);
return *itr;
}
// Otherwise create a new mapping for this image.
const std::size_t next_index{used_images.size()};
const Image entry{cbuf_index, cbuf_offset, next_index, type};
return *used_images.emplace(entry).first;
}
} // namespace VideoCommon::Shader
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