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86e3c90e32ce7585f135032b335ee6e6da22f0b1
KytyPS5/src/graphics/shader/recompiler/ir/passes/ResourceMaterialization.cpp
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nmzik 86e3c90e32 shader: simplify image resource semantics
2026-09-02 15:45:15 +02:00

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#include "graphics/shader/recompiler/ir/passes/ResourceMaterialization.h"
#include "common/assert.h"
#include "graphics/guest_gpu/gpu_format.h"
#include "graphics/shader/recompiler/ir/ShaderIR.h"
#include "graphics/shader/shaderBindings.h"
#include <algorithm>
#include <array>
#include <cstring>
#include <fmt/format.h>
#include <functional>
#include <numeric>
#include <unordered_set>
namespace Libs::Graphics::ShaderRecompiler::IR {
namespace {
constexpr uint64_t AddressMask = 0x0000ffffffffffffull;
constexpr uint64_t MaxIndirectImageProbes = 65536u;
[[noreturn]] void SpecializationFail(std::string_view message) {
EXIT("shader resource specialization failed: %s", std::string(message).c_str());
std::abort();
}
Decoder::ImageDimension DescriptorDimension(const DescriptorValue& descriptor,
Decoder::ImageDimension requested) {
const bool is_array = requested == Decoder::ImageDimension::Dim1DArray ||
requested == Decoder::ImageDimension::Dim2DArray ||
requested == Decoder::ImageDimension::Dim2DMsaaArray;
switch (static_cast<Prospero::ImageType>((descriptor.dwords[3] >> 28u) & 0xfu)) {
case Prospero::ImageType::kColor1D: return Decoder::ImageDimension::Dim1D;
case Prospero::ImageType::kColor1DArray:
if (is_array) {
return Decoder::ImageDimension::Dim1DArray;
}
return Decoder::ImageDimension::Dim1D;
case Prospero::ImageType::kColor3D: return Decoder::ImageDimension::Dim3D;
case Prospero::ImageType::kCube: return Decoder::ImageDimension::Dim2DArray;
case Prospero::ImageType::kColor2DArray:
if (is_array) {
return Decoder::ImageDimension::Dim2DArray;
}
return Decoder::ImageDimension::Dim2D;
case Prospero::ImageType::kColor2DMsaaArray:
if (is_array) {
return Decoder::ImageDimension::Dim2DMsaaArray;
}
return Decoder::ImageDimension::Dim2DMsaa;
case Prospero::ImageType::kColor2D: return Decoder::ImageDimension::Dim2D;
case Prospero::ImageType::kColor2DMsaa: return Decoder::ImageDimension::Dim2DMsaa;
default: return Decoder::ImageDimension::Unknown;
}
}
bool NullImageDescriptor(const DescriptorValue& descriptor) {
return descriptor.dwords[0] == 0 && (descriptor.dwords[1] & 0xffu) == 0;
}
bool ValidImageDescriptor(const DescriptorValue& descriptor, bool r128 = false) {
const auto type = static_cast<Prospero::ImageType>((descriptor.dwords[3] >> 28u) & 0xfu);
const auto format = static_cast<Prospero::BufferFormat>((descriptor.dwords[1] >> 20u) & 0x1ffu);
if (type < Prospero::ImageType::kColor1D || format == Prospero::BufferFormat::kInvalid ||
format > Prospero::BufferFormat::kBc7Srgb) {
return false;
}
if (r128 && type != Prospero::ImageType::kColor1D && type != Prospero::ImageType::kColor2D &&
type != Prospero::ImageType::kColor2DMsaa) {
return false;
}
if (type == Prospero::ImageType::kColor2DMsaa ||
type == Prospero::ImageType::kColor2DMsaaArray) {
const auto base_level = (descriptor.dwords[3] >> 12u) & 0xfu;
const auto fragments = (descriptor.dwords[3] >> 16u) & 0xfu;
const auto max_mip = (descriptor.dwords[5] >> 4u) & 0xfu;
return base_level == 0 && fragments >= 1 && fragments <= 3 &&
(r128 || max_mip == fragments);
}
return true;
}
uint32_t DescriptorImageSwizzle(const DescriptorValue& descriptor) {
return descriptor.dwords[3] & 0xfffu;
}
Prospero::BufferFormat ImageConversionFormat(Prospero::BufferFormat format) {
return Prospero::RemapTextureFormat(format) != format ? format
: Prospero::BufferFormat::kInvalid;
}
bool RequiresPointSampler(const ImageResource& image) {
return image.numeric_class == Prospero::TextureNumericClass::Sint ||
image.conversion_format != Prospero::BufferFormat::kInvalid;
}
bool DescriptorIsCube(const DescriptorValue& descriptor) {
return static_cast<Prospero::ImageType>((descriptor.dwords[3] >> 28u) & 0xfu) ==
Prospero::ImageType::kCube;
}
uint32_t StorageMipCount(const ImageResource& image, const DescriptorValue& descriptor) {
if (image.mip_mode != ImageMipMode::DynamicStorage || NullImageDescriptor(descriptor)) {
return 1;
}
const auto base = (descriptor.dwords[3] >> 12u) & 0xfu;
const auto last = (descriptor.dwords[3] >> 16u) & 0xfu;
return base <= last ? last - base + 1u : 0u;
}
bool DecodeBufferDescriptor(const DescriptorValue& descriptor, ShaderBufferResource& result) {
if (descriptor.dword_count != std::size(result.fields)) {
return false;
}
std::copy_n(descriptor.dwords.begin(), std::size(result.fields), result.fields);
return true;
}
const DescriptorSource* Source(const Program& program, uint32_t source) {
if (source >= program.descriptor_sources.size()) {
return nullptr;
}
return &program.descriptor_sources[source];
}
void MarkCleanFlatSlots(const Program& program, const DescriptorSource* source,
std::span<uint8_t> slots) {
if (source == nullptr) {
return;
}
std::vector<Value> pending(source->dwords.begin(),
source->dwords.begin() + source->dword_count);
std::vector<const Inst*> visited;
while (!pending.empty()) {
auto value = pending.back().Resolve();
pending.pop_back();
const auto* inst = value.TryInstruction();
if (inst == nullptr || std::ranges::find(visited, inst) != visited.end()) {
continue;
}
visited.push_back(inst);
if (inst->GetOpcode() == ValueOpcode::ReadConst) {
const auto slot = inst->Arg(1).Resolve();
if (slot.IsImmediate() && slot.GetType() == Type::U32 && slot.U32() < slots.size()) {
slots[slot.U32()] = 1u;
pending.push_back(program.srt_reads[slot.U32()].value);
}
continue;
}
for (size_t arg = 0; arg < inst->NumArgs(); arg++) {
pending.push_back(inst->Arg(arg));
}
}
}
uint64_t ScalarBufferSize(const ShaderBufferResource& descriptor) {
return descriptor.Stride() == 0u
? descriptor.NumRecords()
: static_cast<uint64_t>(descriptor.Stride()) * descriptor.NumRecords();
}
bool ReadSpecializationWord(const SrtRuntime& runtime, uint64_t address, uint32_t& word) {
return runtime.read_specialization_memory != nullptr &&
runtime.read_specialization_memory(runtime.userdata, address, &word);
}
bool ReadScalarBufferWord(const ShaderBufferResource& descriptor, uint32_t dynamic_offset,
uint32_t immediate_offset, const SrtRuntime& runtime, uint32_t& word) {
const auto byte_offset = static_cast<uint64_t>(dynamic_offset) + immediate_offset;
const auto aligned = byte_offset & ~uint64_t {3};
const auto size = ScalarBufferSize(descriptor);
if (aligned > size || size - aligned < sizeof(uint32_t)) {
word = 0;
return true;
}
const auto base = descriptor.Base48() & ~uint64_t {3};
if (aligned > AddressMask - base) {
return false;
}
const auto address = base + aligned;
if (!ReadSpecializationWord(runtime, address, word)) {
return false;
}
return true;
}
bool MaterializeIndirectImage(const DescriptorSource::IndirectImage& indirect,
const DescriptorValue& material_value,
const DescriptorValue& heap_value, const SrtRuntime& runtime,
ResourceSnapshot::IndirectImage& result) {
ShaderBufferResource material;
ShaderBufferResource heap;
if (!DecodeBufferDescriptor(material_value, material) ||
!DecodeBufferDescriptor(heap_value, heap)) {
return false;
}
if (material.Stride() != indirect.selector_stride) {
return false;
}
// S_BUFFER_LOAD ignores vector-buffer swizzle/add-thread fields. The shader computes the
// record stride explicitly; enumerate every wrapped 32-bit offset that can pass bounds.
const auto period = uint64_t {1} << 32u;
const auto step = std::gcd<uint64_t>(indirect.selector_stride, period);
const auto residue = static_cast<uint64_t>(indirect.selector_offset) % step;
const auto size = ScalarBufferSize(material);
const auto limit = std::min<uint64_t>(UINT32_MAX, size + 3u);
const auto probe_count = residue <= limit ? (limit - residue) / step + 1u : 0u;
if (probe_count > MaxIndirectImageProbes) {
return false;
}
std::vector<uint32_t> keys {0u};
std::unordered_set<uint32_t> seen {0u};
for (uint64_t offset = residue; offset <= limit && probe_count != 0u; offset += step) {
uint32_t key = 0;
if (!ReadScalarBufferWord(material, static_cast<uint32_t>(offset), 0u, runtime, key)) {
return false;
}
if (seen.insert(key).second) {
keys.push_back(key);
}
if (limit - offset < step) {
break;
}
}
ResourceSnapshot::IndirectImage next;
next.capacity = static_cast<uint32_t>(probe_count + 1u);
next.keys = std::move(keys);
for (const auto key: next.keys) {
DescriptorValue candidate;
candidate.dword_count = 8u;
const auto heap_offset = key << 5u;
for (uint32_t dword = 0; dword < candidate.dword_count; dword++) {
if (!ReadScalarBufferWord(heap, heap_offset, dword * sizeof(uint32_t), runtime,
candidate.dwords[dword])) {
return false;
}
}
if (NullImageDescriptor(candidate) || !ValidImageDescriptor(candidate)) {
candidate.dwords.fill(0);
}
const auto found = std::ranges::find(next.descriptors, candidate);
if (found == next.descriptors.end()) {
next.descriptors.push_back(candidate);
next.candidates.push_back(static_cast<uint32_t>(next.descriptors.size() - 1u));
} else {
next.candidates.push_back(static_cast<uint32_t>(found - next.descriptors.begin()));
}
}
result = std::move(next);
return true;
}
size_t FlattenedRuntimeDwords(const Program& program) {
size_t size = program.srt_reads.size();
for (uint32_t resource = 0; resource < program.info.images.size(); resource++) {
const auto& image = program.info.images[resource];
if (image.indirect_root == resource) {
size = std::max(size, static_cast<size_t>(image.indirect_mapping_offset) + 1u +
static_cast<size_t>(image.indirect_mapping_capacity) * 2u);
}
}
return size;
}
} // namespace
bool ValidateResourceSnapshot(const Program& program, const ResourceSnapshot& snapshot) {
if (!program.resource_tracking_complete) {
return false;
}
if (snapshot.buffers.size() != program.info.buffers.size() ||
snapshot.images.size() != program.info.images.size() ||
snapshot.samplers.size() != program.info.samplers.size()) {
return false;
}
if (snapshot.flattened_srt.size() != FlattenedRuntimeDwords(program)) {
return false;
}
if (program.binding_layout_complete) {
for (const auto reg: program.bindings.user_data_registers) {
if (reg < program.user_data_base ||
reg - program.user_data_base >= snapshot.user_data.size()) {
return false;
}
}
}
for (uint32_t i = 0; i < program.info.buffers.size(); i++) {
const auto alias = program.info.buffers[i].image_alias;
if (alias != BufferResource::NoImageAlias && alias >= program.info.images.size()) {
return false;
}
}
const auto CheckWidth = [&](const auto& values, uint32_t width) {
for (uint32_t i = 0; i < values.size(); i++) {
if (values[i].dword_count != width) {
return false;
}
}
return true;
};
std::unordered_set<uint32_t> indirect_resources;
for (const auto& table: snapshot.indirect_images) {
const auto* source = table.resource < program.info.images.size()
? Source(program, program.info.images[table.resource].source)
: nullptr;
if (source == nullptr || !source->indirect_image.has_value() ||
program.info.images[table.resource].indirect_root != ImageResource::NoIndirectImage ||
table.keys.empty() || table.keys.size() != table.candidates.size() ||
table.capacity < table.keys.size() || table.descriptors.empty() ||
!indirect_resources.insert(table.resource).second) {
return false;
}
for (const auto candidate: table.candidates) {
if (candidate >= table.descriptors.size()) {
return false;
}
}
if (snapshot.images[table.resource] != table.descriptors[table.candidates[0]]) {
return false;
}
}
return CheckWidth(snapshot.buffers, 4) && CheckWidth(snapshot.images, 8) &&
CheckWidth(snapshot.samplers, 4);
}
bool ValidateResourceSpecialization(const Program& program, const ResourceSnapshot& snapshot) {
if (!ValidateResourceSnapshot(program, snapshot)) {
return false;
}
if (!snapshot.indirect_images.empty()) {
return false;
}
for (uint32_t i = 0; i < program.info.buffers.size(); i++) {
const auto& buffer = program.info.buffers[i];
ShaderBufferResource descriptor;
if (!DecodeBufferDescriptor(snapshot.buffers[i], descriptor)) {
return false;
}
if (buffer.packed_stride != descriptor.PackedStride() ||
buffer.descriptor_format != descriptor.Format() ||
buffer.descriptor_swizzle != descriptor.DstSelXYZW()) {
return false;
}
}
for (uint32_t i = 0; i < program.info.images.size(); i++) {
const auto& image = program.info.images[i];
const auto& descriptor = snapshot.images[i];
const auto mip_count = StorageMipCount(image, descriptor);
if (mip_count == 0u || mip_count != image.mip_count) {
return false;
}
if (NullImageDescriptor(descriptor)) {
if (image.indirect_root != ImageResource::NoIndirectImage) {
const auto root = image.indirect_root;
if (root >= program.info.images.size() ||
program.info.images[root].resource_class != image.resource_class ||
program.info.images[root].numeric_class != image.numeric_class ||
program.info.images[root].dimension != image.dimension ||
program.info.images[root].mip_mode != image.mip_mode ||
program.info.images[root].mip_count != image.mip_count ||
program.info.images[root].conversion_format != image.conversion_format ||
program.info.images[root].shader_swizzle != image.shader_swizzle ||
program.info.images[root].cube != image.cube) {
return false;
}
continue;
}
const auto canonical_numeric = image.atomic ? Prospero::TextureNumericClass::Uint
: Prospero::TextureNumericClass::Float;
if (image.dimension != Decoder::ImageDimension::Dim2D || image.cube ||
image.resource_class == ImageResourceClass::None ||
image.numeric_class != canonical_numeric) {
return false;
}
continue;
}
const auto dimension = DescriptorDimension(descriptor, image.dimension);
if (dimension == Decoder::ImageDimension::Unknown || dimension != image.dimension ||
DescriptorIsCube(descriptor) != image.cube) {
return false;
}
if (image.resource_class == ImageResourceClass::None) {
return false;
}
const bool storage = image.resource_class == ImageResourceClass::Storage;
const auto format =
static_cast<Prospero::BufferFormat>((descriptor.dwords[1] >> 20u) & 0x1ffu);
if (image.atomic && format != Prospero::BufferFormat::k32UInt) {
return false;
}
const auto conversion_format = ImageConversionFormat(format);
if (image.conversion_format != conversion_format) {
return false;
}
if ((storage || conversion_format != Prospero::BufferFormat::kInvalid) &&
image.shader_swizzle != DescriptorImageSwizzle(descriptor)) {
return false;
}
auto numeric_class = Prospero::SampledTextureNumericClass(format);
if (storage) {
const bool raw_sint = format == Prospero::BufferFormat::k32SInt && image.written &&
!image.read && !image.atomic;
if ((!raw_sint && numeric_class == Prospero::TextureNumericClass::Sint) ||
numeric_class == Prospero::TextureNumericClass::Unsupported) {
return false;
}
if (raw_sint) {
numeric_class = Prospero::TextureNumericClass::Uint;
}
} else if (image.depth_compare && numeric_class != Prospero::TextureNumericClass::Float) {
return false;
}
if (image.numeric_class != numeric_class) {
return false;
}
}
return true;
}
bool MaterializeResources(const Program& program, const SrtRuntime& runtime,
ResourceSnapshot& snapshot) {
if (!program.resource_tracking_complete) {
return false;
}
std::vector<DescriptorSourceRequest> requests;
std::vector<uint8_t> clean_flat_slots(program.srt_reads.size());
requests.reserve(program.info.buffers.size() + program.info.images.size() * 2u +
program.info.samplers.size());
for (const auto& buffer: program.info.buffers) {
requests.push_back({buffer.source});
}
for (const auto& image: program.info.images) {
const auto* source = Source(program, image.source);
if (source != nullptr && source->indirect_image.has_value()) {
if (runtime.read_specialization_memory == nullptr) {
return false;
}
MarkCleanFlatSlots(program, Source(program, source->indirect_image->material_source),
clean_flat_slots);
MarkCleanFlatSlots(program, Source(program, source->indirect_image->heap_source),
clean_flat_slots);
} else {
requests.push_back({image.source});
}
}
for (const auto& sampler: program.info.samplers) {
requests.push_back({sampler.source});
}
std::vector<DescriptorValue> values;
std::vector<uint32_t> flattened_srt;
if (!EvaluateRuntimeSources(program, requests, runtime, values, flattened_srt,
clean_flat_slots)) {
return false;
}
ResourceSnapshot next;
auto cursor = values.begin();
next.buffers.assign(cursor, cursor + program.info.buffers.size());
cursor += program.info.buffers.size();
for (auto& descriptor: next.buffers) {
ShaderBufferResource buffer;
if (DecodeBufferDescriptor(descriptor, buffer) && buffer.Type() != 0) {
descriptor.dwords.fill(0);
}
}
next.flattened_srt = std::move(flattened_srt);
next.flattened_srt.resize(FlattenedRuntimeDwords(program));
next.images.resize(program.info.images.size());
std::vector<uint8_t> image_written(program.info.images.size());
for (uint32_t image_index = 0; image_index < program.info.images.size(); image_index++) {
const auto& image = program.info.images[image_index];
const auto* source = Source(program, image.source);
if (source != nullptr && source->indirect_image.has_value()) {
if (image.indirect_root != ImageResource::NoIndirectImage &&
image.indirect_root != image_index) {
continue;
}
const std::array requests {
DescriptorSourceRequest {source->indirect_image->material_source},
DescriptorSourceRequest {source->indirect_image->heap_source}};
SrtRuntime clean_runtime = runtime;
clean_runtime.read_memory = runtime.read_specialization_memory;
std::vector<DescriptorValue> tables;
if (!EvaluateDescriptorSources(program, requests, clean_runtime, tables)) {
return false;
}
const auto& material = tables[0];
const auto& heap = tables[1];
ResourceSnapshot::IndirectImage table;
if (!MaterializeIndirectImage(*source->indirect_image, material, heap, runtime,
table)) {
return false;
}
if (image.indirect_root == ImageResource::NoIndirectImage) {
next.images[image_index] = table.descriptors[table.candidates[0]];
image_written[image_index] = 1u;
if (table.descriptors.size() > 1u) {
table.resource = image_index;
next.indirect_images.push_back(std::move(table));
}
continue;
}
if (table.keys.size() > image.indirect_mapping_capacity ||
table.descriptors.size() > image.indirect_resources.size()) {
return false;
}
for (uint32_t candidate = 0; candidate < image.indirect_resources.size(); candidate++) {
const auto resource = image.indirect_resources[candidate];
if (resource >= program.info.images.size() ||
program.info.images[resource].indirect_root != image_index) {
return false;
}
next.images[resource] =
table.descriptors[candidate < table.descriptors.size() ? candidate : 0u];
image_written[resource] = 1u;
}
std::vector<uint32_t> order(table.keys.size());
std::iota(order.begin(), order.end(), 0u);
std::ranges::sort(order, {}, [&](uint32_t index) { return table.keys[index]; });
const auto mapping = image.indirect_mapping_offset;
next.flattened_srt[mapping] = static_cast<uint32_t>(table.keys.size());
for (uint32_t entry = 0; entry < order.size(); entry++) {
const auto source = order[entry];
const auto offset = mapping + 1u + entry * 2u;
next.flattened_srt[offset] = table.keys[source];
next.flattened_srt[offset + 1] = table.candidates[source];
}
} else {
auto descriptor = *cursor++;
if (!ValidImageDescriptor(descriptor, image.r128)) {
descriptor.dwords.fill(0);
}
next.images[image_index] = descriptor;
image_written[image_index] = 1u;
}
}
if (std::ranges::find(image_written, uint8_t {0}) != image_written.end()) {
return false;
}
next.samplers.assign(cursor, cursor + program.info.samplers.size());
next.user_data.assign(runtime.user_data.begin(), runtime.user_data.end());
if (!ValidateResourceSnapshot(program, next)) {
return false;
}
snapshot = std::move(next);
return true;
}
void SpecializeResources(Program& program, ResourceSnapshot& snapshot) {
if (!program.resource_tracking_complete || program.shader_info_complete ||
program.binding_layout_complete) {
return SpecializationFail(!program.resource_tracking_complete
? "shader resources were not tracked"
: "resource specialization is too late");
}
if (!ValidateResourceSnapshot(program, snapshot)) {
return SpecializationFail("invalid resource snapshot");
}
auto next = program.info;
auto next_snapshot = snapshot;
for (const auto& table: snapshot.indirect_images) {
if (table.resource >= next.images.size() || table.descriptors.size() < 2u ||
next.images.size() + table.descriptors.size() - 1u > ShaderInfo::MaxImages) {
return SpecializationFail(
"indirect image candidates exceed the dense image resource limit");
}
const auto root_image = next.images[table.resource];
std::vector<uint32_t> resources(table.descriptors.size());
resources[0] = table.resource;
for (uint32_t candidate = 1; candidate < table.descriptors.size(); candidate++) {
resources[candidate] = static_cast<uint32_t>(next.images.size());
auto image = root_image;
image.indirect_root = table.resource;
next.images.push_back(std::move(image));
next_snapshot.images.push_back(table.descriptors[candidate]);
}
auto& root = next.images[table.resource];
root.indirect_root = table.resource;
root.indirect_mapping_offset = static_cast<uint32_t>(next_snapshot.flattened_srt.size());
root.indirect_mapping_capacity = table.capacity;
root.indirect_resources = std::move(resources);
next_snapshot.flattened_srt.resize(next_snapshot.flattened_srt.size() + 1u +
static_cast<size_t>(table.capacity) * 2u);
std::vector<uint32_t> order(table.keys.size());
std::iota(order.begin(), order.end(), 0u);
std::ranges::sort(order, {}, [&](uint32_t index) { return table.keys[index]; });
next_snapshot.flattened_srt[root.indirect_mapping_offset] =
static_cast<uint32_t>(table.keys.size());
for (uint32_t entry = 0; entry < order.size(); entry++) {
const auto source = order[entry];
const auto offset = root.indirect_mapping_offset + 1u + entry * 2u;
next_snapshot.flattened_srt[offset] = table.keys[source];
next_snapshot.flattened_srt[offset + 1] = table.candidates[source];
}
next_snapshot.images[table.resource] = table.descriptors[0];
}
next_snapshot.indirect_images.clear();
for (uint32_t i = 0; i < next.buffers.size(); i++) {
ShaderBufferResource descriptor;
if (!DecodeBufferDescriptor(next_snapshot.buffers[i], descriptor)) {
return SpecializationFail(fmt::format("buffer descriptor {} has invalid width", i));
}
next.buffers[i].packed_stride = descriptor.PackedStride();
next.buffers[i].descriptor_format = descriptor.Format();
next.buffers[i].descriptor_swizzle = descriptor.DstSelXYZW();
}
for (uint32_t i = 0; i < next.images.size(); i++) {
const auto& descriptor = next_snapshot.images[i];
auto& image = next.images[i];
if (image.resource_class == ImageResourceClass::None ||
(image.atomic && image.resource_class != ImageResourceClass::Storage)) {
return SpecializationFail(fmt::format("image resource {} has an invalid class", i));
}
image.mip_count = StorageMipCount(image, descriptor);
if (image.mip_count == 0u) {
return SpecializationFail(
fmt::format("storage image descriptor {} has an invalid mip range", i));
}
if (NullImageDescriptor(descriptor)) {
image.numeric_class = image.atomic ? Prospero::TextureNumericClass::Uint
: Prospero::TextureNumericClass::Float;
image.dimension = Decoder::ImageDimension::Dim2D;
image.cube = false;
continue;
}
const auto descriptor_dimension = DescriptorDimension(descriptor, image.dimension);
if (descriptor_dimension == Decoder::ImageDimension::Unknown) {
return SpecializationFail(fmt::format(
"image descriptor {} has unsupported type {}: {:08x},{:08x},{:08x},{:08x},"
"{:08x},{:08x},{:08x},{:08x}",
i, (descriptor.dwords[3] >> 28u) & 0xfu, descriptor.dwords[0], descriptor.dwords[1],
descriptor.dwords[2], descriptor.dwords[3], descriptor.dwords[4],
descriptor.dwords[5], descriptor.dwords[6], descriptor.dwords[7]));
}
image.dimension = descriptor_dimension;
image.cube = DescriptorIsCube(descriptor);
const auto format =
static_cast<Prospero::BufferFormat>((descriptor.dwords[1] >> 20u) & 0x1ffu);
if (image.atomic && format != Prospero::BufferFormat::k32UInt) {
return SpecializationFail(
fmt::format("atomic image descriptor {} uses unsupported format {}", i,
static_cast<uint32_t>(format)));
}
const bool storage = image.resource_class == ImageResourceClass::Storage;
image.conversion_format = ImageConversionFormat(format);
if (storage || image.conversion_format != Prospero::BufferFormat::kInvalid) {
image.shader_swizzle = DescriptorImageSwizzle(descriptor);
}
const bool raw_sint_storage = storage && format == Prospero::BufferFormat::k32SInt &&
image.written && !image.read && !image.atomic;
image.numeric_class = Prospero::SampledTextureNumericClass(format);
if (storage) {
if ((!raw_sint_storage && image.numeric_class == Prospero::TextureNumericClass::Sint) ||
image.numeric_class == Prospero::TextureNumericClass::Unsupported) {
return SpecializationFail(
fmt::format("storage image descriptor {} uses unsupported format {}", i,
static_cast<uint32_t>(format)));
}
if (raw_sint_storage) {
image.numeric_class = Prospero::TextureNumericClass::Uint;
}
} else if (image.numeric_class == Prospero::TextureNumericClass::Unsupported ||
(image.depth_compare &&
image.numeric_class != Prospero::TextureNumericClass::Float)) {
return SpecializationFail(
fmt::format("sampled image descriptor {} uses unsupported format {}", i,
static_cast<uint32_t>(format)));
}
}
for (uint32_t root_index = 0; root_index < next.images.size(); root_index++) {
auto& root = next.images[root_index];
if (root.indirect_root != root_index) {
continue;
}
if (root.indirect_mapping_capacity == 0u || root.indirect_resources.size() < 2u ||
static_cast<size_t>(root.indirect_mapping_offset) + 1u +
static_cast<size_t>(root.indirect_mapping_capacity) * 2u >
next_snapshot.flattened_srt.size()) {
return SpecializationFail("indirect image specialization has an invalid key mapping");
}
uint32_t exemplar = ImageResource::NoIndirectImage;
for (const auto resource: root.indirect_resources) {
if (resource >= next.images.size() ||
next.images[resource].indirect_root != root_index) {
return SpecializationFail("indirect image specialization has an invalid candidate");
}
if (!NullImageDescriptor(next_snapshot.images[resource])) {
exemplar = resource;
break;
}
}
if (exemplar == ImageResource::NoIndirectImage) {
return SpecializationFail("indirect image specialization has no typed candidate");
}
const auto& image_class = next.images[exemplar];
for (uint32_t candidate = 0; candidate < next.images.size(); candidate++) {
auto& image = next.images[candidate];
if (image.indirect_root != root_index) {
continue;
}
if (NullImageDescriptor(next_snapshot.images[candidate])) {
image.resource_class = image_class.resource_class;
image.numeric_class = image_class.numeric_class;
image.dimension = image_class.dimension;
image.mip_count = image_class.mip_count;
image.conversion_format = image_class.conversion_format;
image.shader_swizzle = image_class.shader_swizzle;
image.cube = image_class.cube;
}
if (image.resource_class != image_class.resource_class ||
image.numeric_class != image_class.numeric_class ||
image.dimension != image_class.dimension ||
image.mip_mode != image_class.mip_mode ||
image.mip_count != image_class.mip_count ||
image.conversion_format != image_class.conversion_format ||
image.shader_swizzle != image_class.shader_swizzle ||
image.depth_compare != image_class.depth_compare ||
image.cube != image_class.cube) {
return SpecializationFail(
fmt::format("indirect image table at pc 0x{:08x} has incompatible candidates",
root.first_use_pc));
}
}
}
auto memory_info = program.memory_info;
struct SamplerUsage {
bool native = false;
bool point_only = false;
};
std::vector<SamplerUsage> sampler_usage(next.samplers.size());
for (const auto& pair: next.sampled_pairs) {
if (pair.image >= next.images.size() || pair.sampler >= next.samplers.size()) {
return SpecializationFail(
fmt::format("sampled resource pair at pc 0x{:08x} is invalid", pair.first_use_pc));
}
auto& usage = sampler_usage[pair.sampler];
if (RequiresPointSampler(next.images[pair.image])) {
usage.point_only = true;
} else {
usage.native = true;
}
}
std::vector<uint32_t> point_sampler(next.samplers.size(), UINT32_MAX);
for (uint32_t i = 0; i < sampler_usage.size(); i++) {
if (!sampler_usage[i].point_only) {
continue;
}
if (!sampler_usage[i].native) {
next.samplers[i].force_point_filtering = true;
point_sampler[i] = i;
continue;
}
if (next.samplers.size() >= ShaderInfo::MaxSamplers) {
return SpecializationFail(
"point-filter sampler variants exceed the dense sampler resource limit");
}
point_sampler[i] = static_cast<uint32_t>(next.samplers.size());
auto sampler = next.samplers[i];
sampler.force_point_filtering = true;
next.samplers.push_back(sampler);
next_snapshot.samplers.push_back(next_snapshot.samplers[i]);
}
for (auto& pair: next.sampled_pairs) {
if (RequiresPointSampler(next.images[pair.image])) {
pair.sampler = point_sampler[pair.sampler];
}
}
for (const auto* block: program.blocks) {
for (const auto& inst: *block) {
const auto image_opcode = ImageOpcodeInfoOf(inst.GetOpcode());
if (image_opcode.access == ImageAccess::None) {
continue;
}
const auto index = inst.Flags<MemoryFlags>().index;
if (index >= memory_info.size()) {
return SpecializationFail(
fmt::format("typed image instruction has invalid memory metadata {}", index));
}
auto& memory = memory_info[index];
if (memory.resource >= next.images.size()) {
return SpecializationFail(fmt::format(
"typed image instruction has invalid resource {}", memory.resource));
}
const auto& image = next.images[memory.resource];
if (image_opcode.needs_sampler && RequiresPointSampler(image) &&
memory.sampler < point_sampler.size()) {
memory.sampler = point_sampler[memory.sampler];
}
if (image.indirect_root == memory.resource &&
inst.GetOpcode() != ValueOpcode::ImageSampleRaw) {
return SpecializationFail(
fmt::format("indirect image table at pc 0x{:08x} is used by unsupported {}",
inst.Flags<MemoryFlags>().pc, ValueOpcodeName(inst.GetOpcode())));
}
}
}
program.info = std::move(next);
program.memory_info = std::move(memory_info);
snapshot = std::move(next_snapshot);
}
} // namespace Libs::Graphics::ShaderRecompiler::IR
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