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72518f64fbc3fc9a22491a4bcaeea34f5033d0f7
AnyPS5/core/shader/recompiler/CacheKey.hpp
T
Michon 72518f64fb feat(agc): single-sample sample masks as a per-quad-pixel discard 
With one sample, PA_SC_AA_MASK leaves one coverage bit per pixel of the 2x2 quad,
so a draw can cover only some pixels of every quad (GTA V renders a target one
quarter of the pixels at a time this way). The pixel stage info carries that 4-bit
mask; a fragment shader whose mask is not full starts by killing the invocation
unless its gl_FragCoord quad position is covered, and runs without early fragment
tests. The mask is part of the recompile cache key and the serialized request
(version 24). Sample masks of multisampled draws stay refused.
2026-10-15 12:59:39 +13:00

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#ifndef CORE_SHADER_RECOMPILER_CACHEKEY_HPP
#define CORE_SHADER_RECOMPILER_CACHEKEY_HPP
#include "Recompiler.hpp"
#include "RdnaDecoder/RdnaDescriptorFormat.hpp"
#include "prx/libc/include/HostThreadLocal.hpp"
#include <cstdlib>
#include <stdexcept>
#include <type_traits>
namespace ShaderRecompiler {
class RecompileCacheKey {
public:
static void Build(const RecompileRequest& request, std::vector<std::uint64_t>& key) {
key.clear();
append(key, RuntimeAbi::Version);
append(key, request.shader.stage);
// The code enters as a hash rather than word by word: the key is built, hashed and compared
// on every dispatch and draw. The cache verifies a match against the code it stored.
// Debug aid: APS5_NO_CODE_HASH_KEY=1 appends every code word, as before.
static const bool hashedCode = std::getenv("APS5_NO_CODE_HASH_KEY") == nullptr;
if (hashedCode) {
append(key, request.shader.code.size());
append(key, HashCode(request.shader.code));
} else {
append(key, request.shader.code);
}
appendInterface(key, request);
}
static void BuildInterface(const RecompileRequest& request, std::vector<std::uint64_t>& key) {
key.clear();
append(key, RuntimeAbi::Version);
append(key, request.shader.stage);
appendInterface(key, request);
}
// A hash over every field Build appends except the code, the target and the probe flag: the
// key of a source memo whose owner fixes the code (a registered shader at an offset) and the
// device itself, and which is bypassed while the probe is active.
static std::uint64_t ContextHash(const RecompileRequest& request) {
struct ContextKeyStorage {};
auto& key = HostThreadLocal<std::vector<std::uint64_t>, ContextKeyStorage>();
key.clear();
append(key, RuntimeAbi::Version);
append(key, request.shader.stage);
append(key, request.context.waveSize);
append(key, request.context.userDataBaseRegister);
append(key, request.context.userData.size());
append(key, request.context.compute);
append(key, request.context.pixel);
append(key, request.context.vertex);
append(key, request.context.floatMode);
appendFallbacks(key, request);
appendMesh(key, request);
appendTessellation(key, request);
std::uint64_t hash = 0xcbf29ce484222325ull;
for (const auto value : key) {
hash ^= value;
hash *= 0x100000001b3ull;
}
return hash;
}
// A 64-bit hash of the code, two dwords per step; collisions are resolved by comparing the code.
static std::uint64_t HashCode(std::span<const std::uint32_t> code) {
std::uint64_t hash = 0x9e3779b97f4a7c15ull ^ (static_cast<std::uint64_t>(code.size()) * 0x100000001b3ull);
const auto mix = [&](std::uint64_t chunk) {
hash = (hash ^ chunk) * 0x9e3779b97f4a7c15ull;
hash ^= hash >> 29u;
};
std::size_t index = 0;
for (; index + 2 <= code.size(); index += 2) mix(code[index] | (static_cast<std::uint64_t>(code[index + 1]) << 32u));
if (index < code.size()) mix(code[index]);
return hash;
}
private:
static void appendInterface(std::vector<std::uint64_t>& key, const RecompileRequest& request) {
append(key, request.context.waveSize);
append(key, request.context.userDataBaseRegister);
append(key, request.context.userData.size());
append(key, request.context.compute);
append(key, request.context.pixel);
append(key, request.context.vertex);
append(key, request.context.floatMode);
appendFallbacks(key, request);
appendMesh(key, request);
appendTessellation(key, request);
append(key, request.target);
append(key, DebugProbeActive());
append(key, RayTracingStrict());
append(key, RayTracingMiss());
}
static void appendFallbacks(std::vector<std::uint64_t>& key, const RecompileRequest& request) {
append(key, request.context.linkedCallFallbacks.size());
for (const auto programCounter : request.context.linkedCallFallbacks) append(key, programCounter);
}
static void appendMesh(std::vector<std::uint64_t>& key, const RecompileRequest& request) {
if (request.shader.stage != ShaderStage::Mesh) return;
const auto* mesh = request.graphics && request.graphics->mesh ? &*request.graphics->mesh : nullptr;
append(key, mesh != nullptr);
if (mesh == nullptr) return;
for (const auto value : {mesh->inputPrimitive, mesh->primitivesPerGroup, mesh->verticesPerGroup, mesh->maxVertices, mesh->maxPrimitives, mesh->threadsPerGroup, mesh->ldsSizeDwords, mesh->provokingVertex, mesh->esgsItemSize}) append(key, value);
}
static void appendTessellation(std::vector<std::uint64_t>& key, const RecompileRequest& request) {
if (request.shader.stage != ShaderStage::Local && request.shader.stage != ShaderStage::TessellationControl && request.shader.stage != ShaderStage::TessellationEvaluation) return;
const auto* tessellation = request.graphics && request.graphics->tessellation ? &*request.graphics->tessellation : nullptr;
append(key, tessellation != nullptr);
if (tessellation == nullptr) return;
for (const auto value : {tessellation->inputControlPoints, tessellation->outputControlPoints, tessellation->domain, tessellation->partitioning, tessellation->outputTopology}) append(key, value);
if (request.shader.stage == ShaderStage::Local) return;
append(key, tessellation->patchesPerGroup);
append(key, tessellation->primitiveGroupSize);
append(key, TessellationInstancePatches(request));
}
template<typename TValue>
static void append(std::vector<std::uint64_t>& key, TValue value) requires (std::is_integral_v<TValue> || std::is_enum_v<TValue>) {
key.push_back(static_cast<std::uint64_t>(value));
}
template<typename TValue, std::size_t TSize>
static void append(std::vector<std::uint64_t>& key, const std::array<TValue, TSize>& values) {
for (const auto value : values) append(key, value);
}
template<typename TValue>
static void append(std::vector<std::uint64_t>& key, std::span<TValue> values) {
append(key, values.size());
for (const auto value : values) append(key, value);
}
template<typename TValue>
static void append(std::vector<std::uint64_t>& key, const std::optional<TValue>& value) {
append(key, value.has_value());
if (value) append(key, *value);
}
static void append(std::vector<std::uint64_t>& key, std::string_view value) {
append(key, value.size());
for (const unsigned char byte : value) append(key, byte);
}
static void append(std::vector<std::uint64_t>& key, const ShaderFloatMode& value) {
append(key, value.floatMode);
append(key, value.dx10Clamp);
append(key, value.ieeeMode);
append(key, value.fp16Overflow);
}
static void append(std::vector<std::uint64_t>& key, const ShaderComputeStageInfo& value) {
append(key, value.numThreads);
append(key, value.ldsSizeDwords);
append(key, value.groupIdEnable);
append(key, value.tgSizeEnable);
append(key, value.threadIdComponentCount);
append(key, value.PartialGroups());
append(key, value.scratchDwords);
}
static void append(std::vector<std::uint64_t>& key, const ShaderPixelStageInfo& value) {
append(key, value.interpolatorCount);
if (value.interpolatorCount > value.interpolatorSettings.size()) throw std::runtime_error("Shader cache: invalid interpolator count");
for (std::uint32_t i = 0; i < value.interpolatorCount; ++i) append(key, value.interpolatorSettings[i]);
append(key, value.wave32);
append(key, value.inputAddr);
append(key, value.hasPerspectiveCenterVgpr);
append(key, value.perspectiveCentroid);
append(key, value.posX);
append(key, value.posY);
append(key, value.posZ);
append(key, value.posW);
append(key, value.frontFace);
append(key, value.frontFaceAllBits);
append(key, value.ancillary);
append(key, value.sampleShading);
append(key, value.noPerspective);
append(key, value.linearCentroid);
append(key, value.pixelKillEnable);
append(key, value.depthExportEnable);
append(key, value.sampleMaskExportEnable);
append(key, value.earlyZ);
append(key, value.executeOnNoop);
append(key, value.conservativeZExport);
append(key, value.orderedPixelShader);
append(key, value.alphaToCoverage);
append(key, value.stencilRefExportEnable);
append(key, value.ditheredAlphaToCoverage);
append(key, value.quadPixelMask);
append(key, value.targetOutputMode);
}
static void append(std::vector<std::uint64_t>& key, const ShaderVertexResourceDestination& value) {
append(key, value.registerStart);
append(key, value.registersNum);
append(key, value.attrId);
append(key, value.fetchIndex);
}
static void append(std::vector<std::uint64_t>& key, const ShaderVertexStageInfo& value) {
append(key, value.fetchAttribReg);
append(key, value.fetchBufferReg);
append(key, value.fetchEmbedded);
append(key, value.paClVsOutCntl);
if (value.resourcesNum > value.resources.size()) throw std::runtime_error("Shader cache: invalid vertex resource count");
append(key, value.resourcesNum);
for (std::uint32_t i = 0; i < value.resourcesNum; ++i) {
if (!value.fetchEmbedded) append(key, VertexInputNumericClass(static_cast<IrBufferFormat>((value.resources[i].fields[3] >> 12u) & 0x7fu)));
auto destination = value.resourcesDst[i];
if (value.fetchEmbedded) destination.fetchIndex = 0;
append(key, destination);
}
}
static void append(std::vector<std::uint64_t>& key, const MeshTargetLimits& value) {
append(key, value.maxWorkgroupSize);
append(key, value.maxWorkgroupInvocations);
append(key, value.maxSharedMemoryBytes);
append(key, value.maxOutputVertices);
append(key, value.maxOutputPrimitives);
append(key, value.maxOutputComponents);
append(key, value.maxOutputMemoryBytes);
append(key, value.outputPerVertexGranularity);
append(key, value.outputPerPrimitiveGranularity);
}
static void append(std::vector<std::uint64_t>& key, const TessellationTargetLimits& value) {
append(key, value.maxPatchSize);
append(key, value.maxControlPerVertexInputComponents);
append(key, value.maxControlPerVertexOutputComponents);
append(key, value.maxControlPerPatchOutputComponents);
append(key, value.maxControlTotalOutputComponents);
append(key, value.maxEvaluationInputComponents);
append(key, value.maxEvaluationOutputComponents);
}
static void append(std::vector<std::uint64_t>& key, const SpirvTarget& value) {
append(key, value.vulkanVersion);
append(key, value.spirvVersion);
append(key, value.subgroupSize);
append(key, value.bdaAbiVersion);
append(key, value.supportedCapabilities);
append(key, value.supportedExtensions);
append(key, value.fragmentShaderBarycentricEnabled);
append(key, value.maxWorkgroupSize);
append(key, value.maxWorkgroupInvocations);
append(key, value.maxWorkgroupSharedMemoryBytes);
append(key, value.mesh);
append(key, value.tessellation);
append(key, value.nonConstantImageOffsets);
append(key, value.srgbDecodeFormats);
append(key, value.narrowSubgroupClock);
append(key, value.float64DenormPreserve);
append(key, value.registrationModules);
append(key, value.registrationWordLimit);
append(key, value.vertexSubgroups);
append(key, value.float16DenormPreserve);
}
};
}
#endif
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