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-rw-r--r--src/video_core/shader_cache.cpp233
1 files changed, 233 insertions, 0 deletions
diff --git a/src/video_core/shader_cache.cpp b/src/video_core/shader_cache.cpp
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index 000000000..b8b8eace5
--- /dev/null
+++ b/src/video_core/shader_cache.cpp
@@ -0,0 +1,233 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <array>
+#include <vector>
+
+#include "common/assert.h"
+#include "shader_recompiler/frontend/maxwell/control_flow.h"
+#include "shader_recompiler/object_pool.h"
+#include "video_core/dirty_flags.h"
+#include "video_core/engines/kepler_compute.h"
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/memory_manager.h"
+#include "video_core/shader_cache.h"
+#include "video_core/shader_environment.h"
+
+namespace VideoCommon {
+
+void ShaderCache::InvalidateRegion(VAddr addr, size_t size) {
+ std::scoped_lock lock{invalidation_mutex};
+ InvalidatePagesInRegion(addr, size);
+ RemovePendingShaders();
+}
+
+void ShaderCache::OnCPUWrite(VAddr addr, size_t size) {
+ std::lock_guard lock{invalidation_mutex};
+ InvalidatePagesInRegion(addr, size);
+}
+
+void ShaderCache::SyncGuestHost() {
+ std::scoped_lock lock{invalidation_mutex};
+ RemovePendingShaders();
+}
+
+ShaderCache::ShaderCache(VideoCore::RasterizerInterface& rasterizer_,
+ Tegra::MemoryManager& gpu_memory_, Tegra::Engines::Maxwell3D& maxwell3d_,
+ Tegra::Engines::KeplerCompute& kepler_compute_)
+ : gpu_memory{gpu_memory_}, maxwell3d{maxwell3d_}, kepler_compute{kepler_compute_},
+ rasterizer{rasterizer_} {}
+
+bool ShaderCache::RefreshStages(std::array<u64, 6>& unique_hashes) {
+ auto& dirty{maxwell3d.dirty.flags};
+ if (!dirty[VideoCommon::Dirty::Shaders]) {
+ return last_shaders_valid;
+ }
+ dirty[VideoCommon::Dirty::Shaders] = false;
+
+ const GPUVAddr base_addr{maxwell3d.regs.code_address.CodeAddress()};
+ for (size_t index = 0; index < Tegra::Engines::Maxwell3D::Regs::MaxShaderProgram; ++index) {
+ if (!maxwell3d.regs.IsShaderConfigEnabled(index)) {
+ unique_hashes[index] = 0;
+ continue;
+ }
+ const auto& shader_config{maxwell3d.regs.shader_config[index]};
+ const auto program{static_cast<Tegra::Engines::Maxwell3D::Regs::ShaderProgram>(index)};
+ const GPUVAddr shader_addr{base_addr + shader_config.offset};
+ const std::optional<VAddr> cpu_shader_addr{gpu_memory.GpuToCpuAddress(shader_addr)};
+ if (!cpu_shader_addr) {
+ LOG_ERROR(HW_GPU, "Invalid GPU address for shader 0x{:016x}", shader_addr);
+ last_shaders_valid = false;
+ return false;
+ }
+ const ShaderInfo* shader_info{TryGet(*cpu_shader_addr)};
+ if (!shader_info) {
+ const u32 start_address{shader_config.offset};
+ GraphicsEnvironment env{maxwell3d, gpu_memory, program, base_addr, start_address};
+ shader_info = MakeShaderInfo(env, *cpu_shader_addr);
+ }
+ shader_infos[index] = shader_info;
+ unique_hashes[index] = shader_info->unique_hash;
+ }
+ last_shaders_valid = true;
+ return true;
+}
+
+const ShaderInfo* ShaderCache::ComputeShader() {
+ const GPUVAddr program_base{kepler_compute.regs.code_loc.Address()};
+ const auto& qmd{kepler_compute.launch_description};
+ const GPUVAddr shader_addr{program_base + qmd.program_start};
+ const std::optional<VAddr> cpu_shader_addr{gpu_memory.GpuToCpuAddress(shader_addr)};
+ if (!cpu_shader_addr) {
+ LOG_ERROR(HW_GPU, "Invalid GPU address for shader 0x{:016x}", shader_addr);
+ return nullptr;
+ }
+ if (const ShaderInfo* const shader = TryGet(*cpu_shader_addr)) {
+ return shader;
+ }
+ ComputeEnvironment env{kepler_compute, gpu_memory, program_base, qmd.program_start};
+ return MakeShaderInfo(env, *cpu_shader_addr);
+}
+
+ShaderInfo* ShaderCache::TryGet(VAddr addr) const {
+ std::scoped_lock lock{lookup_mutex};
+
+ const auto it = lookup_cache.find(addr);
+ if (it == lookup_cache.end()) {
+ return nullptr;
+ }
+ return it->second->data;
+}
+
+void ShaderCache::Register(std::unique_ptr<ShaderInfo> data, VAddr addr, size_t size) {
+ std::scoped_lock lock{invalidation_mutex, lookup_mutex};
+
+ const VAddr addr_end = addr + size;
+ Entry* const entry = NewEntry(addr, addr_end, data.get());
+
+ const u64 page_end = (addr_end + PAGE_SIZE - 1) >> PAGE_BITS;
+ for (u64 page = addr >> PAGE_BITS; page < page_end; ++page) {
+ invalidation_cache[page].push_back(entry);
+ }
+
+ storage.push_back(std::move(data));
+
+ rasterizer.UpdatePagesCachedCount(addr, size, 1);
+}
+
+void ShaderCache::InvalidatePagesInRegion(VAddr addr, size_t size) {
+ const VAddr addr_end = addr + size;
+ const u64 page_end = (addr_end + PAGE_SIZE - 1) >> PAGE_BITS;
+ for (u64 page = addr >> PAGE_BITS; page < page_end; ++page) {
+ auto it = invalidation_cache.find(page);
+ if (it == invalidation_cache.end()) {
+ continue;
+ }
+ InvalidatePageEntries(it->second, addr, addr_end);
+ }
+}
+
+void ShaderCache::RemovePendingShaders() {
+ if (marked_for_removal.empty()) {
+ return;
+ }
+ // Remove duplicates
+ std::ranges::sort(marked_for_removal);
+ marked_for_removal.erase(std::unique(marked_for_removal.begin(), marked_for_removal.end()),
+ marked_for_removal.end());
+
+ std::vector<ShaderInfo*> removed_shaders;
+ removed_shaders.reserve(marked_for_removal.size());
+
+ std::scoped_lock lock{lookup_mutex};
+
+ for (Entry* const entry : marked_for_removal) {
+ removed_shaders.push_back(entry->data);
+
+ const auto it = lookup_cache.find(entry->addr_start);
+ ASSERT(it != lookup_cache.end());
+ lookup_cache.erase(it);
+ }
+ marked_for_removal.clear();
+
+ if (!removed_shaders.empty()) {
+ RemoveShadersFromStorage(std::move(removed_shaders));
+ }
+}
+
+void ShaderCache::InvalidatePageEntries(std::vector<Entry*>& entries, VAddr addr, VAddr addr_end) {
+ size_t index = 0;
+ while (index < entries.size()) {
+ Entry* const entry = entries[index];
+ if (!entry->Overlaps(addr, addr_end)) {
+ ++index;
+ continue;
+ }
+
+ UnmarkMemory(entry);
+ RemoveEntryFromInvalidationCache(entry);
+ marked_for_removal.push_back(entry);
+ }
+}
+
+void ShaderCache::RemoveEntryFromInvalidationCache(const Entry* entry) {
+ const u64 page_end = (entry->addr_end + PAGE_SIZE - 1) >> PAGE_BITS;
+ for (u64 page = entry->addr_start >> PAGE_BITS; page < page_end; ++page) {
+ const auto entries_it = invalidation_cache.find(page);
+ ASSERT(entries_it != invalidation_cache.end());
+ std::vector<Entry*>& entries = entries_it->second;
+
+ const auto entry_it = std::ranges::find(entries, entry);
+ ASSERT(entry_it != entries.end());
+ entries.erase(entry_it);
+ }
+}
+
+void ShaderCache::UnmarkMemory(Entry* entry) {
+ if (!entry->is_memory_marked) {
+ return;
+ }
+ entry->is_memory_marked = false;
+
+ const VAddr addr = entry->addr_start;
+ const size_t size = entry->addr_end - addr;
+ rasterizer.UpdatePagesCachedCount(addr, size, -1);
+}
+
+void ShaderCache::RemoveShadersFromStorage(std::vector<ShaderInfo*> removed_shaders) {
+ // Remove them from the cache
+ std::erase_if(storage, [&removed_shaders](const std::unique_ptr<ShaderInfo>& shader) {
+ return std::ranges::find(removed_shaders, shader.get()) != removed_shaders.end();
+ });
+}
+
+ShaderCache::Entry* ShaderCache::NewEntry(VAddr addr, VAddr addr_end, ShaderInfo* data) {
+ auto entry = std::make_unique<Entry>(Entry{addr, addr_end, data});
+ Entry* const entry_pointer = entry.get();
+
+ lookup_cache.emplace(addr, std::move(entry));
+ return entry_pointer;
+}
+
+const ShaderInfo* ShaderCache::MakeShaderInfo(GenericEnvironment& env, VAddr cpu_addr) {
+ auto info = std::make_unique<ShaderInfo>();
+ if (const std::optional<u64> cached_hash{env.Analyze()}) {
+ info->unique_hash = *cached_hash;
+ info->size_bytes = env.CachedSize();
+ } else {
+ // Slow path, not really hit on commercial games
+ // Build a control flow graph to get the real shader size
+ Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block;
+ Shader::Maxwell::Flow::CFG cfg{env, flow_block, env.StartAddress()};
+ info->unique_hash = env.CalculateHash();
+ info->size_bytes = env.ReadSize();
+ }
+ const size_t size_bytes{info->size_bytes};
+ const ShaderInfo* const result{info.get()};
+ Register(std::move(info), cpu_addr, size_bytes);
+ return result;
+}
+
+} // namespace VideoCommon