gl_shader_cache: Implement locker variants invalidation

src/video_core/renderer_opengl/gl_shader_cache.cpp

@@ -225,6 +225,34 @@ std::string GetShaderId(u64 unique_identifier, ProgramType program_type) {
     return fmt::format("{}{:016X}", GetProgramTypeName(program_type), unique_identifier);
 }
 
+Tegra::Engines::ConstBufferEngineInterface& GetConstBufferEngineInterface(
+    Core::System& system, ProgramType program_type) {
+    if (program_type == ProgramType::Compute) {
+        return system.GPU().KeplerCompute();
+    } else {
+        return system.GPU().Maxwell3D();
+    }
+}
+
+std::unique_ptr<ConstBufferLocker> MakeLocker(Core::System& system, ProgramType program_type) {
+    return std::make_unique<ConstBufferLocker>(GetEnginesShaderType(program_type),
+                                               GetConstBufferEngineInterface(system, program_type));
+}
+
+void FillLocker(ConstBufferLocker& locker, const ShaderDiskCacheUsage& usage) {
+    for (const auto& key : usage.keys) {
+        const auto [buffer, offset] = key.first;
+        locker.InsertKey(buffer, offset, key.second);
+    }
+    for (const auto& [offset, sampler] : usage.bound_samplers) {
+        locker.InsertBoundSampler(offset, sampler);
+    }
+    for (const auto& [key, sampler] : usage.bindless_samplers) {
+        const auto [buffer, offset] = key;
+        locker.InsertBindlessSampler(buffer, offset, sampler);
+    }
+}
+
 CachedProgram BuildShader(const Device& device, u64 unique_identifier, ProgramType program_type,
                           const ProgramCode& program_code, const ProgramCode& program_code_b,
                           const ProgramVariant& variant, ConstBufferLocker& locker,
@@ -336,11 +364,27 @@ CachedShader::CachedShader(const ShaderParameters& params, ProgramType program_t
       disk_cache{params.disk_cache}, device{params.device}, cpu_addr{params.cpu_addr},
       unique_identifier{params.unique_identifier}, program_type{program_type}, entries{entries},
       program_code{std::move(program_code)}, program_code_b{std::move(program_code_b)} {
-    if (params.precompiled_variants) {
-        for (const auto& pair : *params.precompiled_variants) {
-            const auto& variant = pair->first.variant;
-            programs.emplace(variant, pair->second);
+    if (!params.precompiled_variants) {
+        return;
+    }
+    for (const auto& pair : *params.precompiled_variants) {
+        auto locker = MakeLocker(system, program_type);
+        const auto& usage = pair->first;
+        FillLocker(*locker, usage);
+
+        std::unique_ptr<LockerVariant>* locker_variant = nullptr;
+        const auto it =
+            std::find_if(locker_variants.begin(), locker_variants.end(), [&](const auto& variant) {
+                return variant->locker->HasEqualKeys(*locker);
+            });
+        if (it == locker_variants.end()) {
+            locker_variant = &locker_variants.emplace_back();
+            *locker_variant = std::make_unique<LockerVariant>();
+            locker_variant->get()->locker = std::move(locker);
+        } else {
+            locker_variant = &*it;
         }
+        locker_variant->get()->programs.emplace(usage.variant, pair->second);
     }
 }
 
@@ -380,19 +424,14 @@ Shader CachedShader::CreateFromCache(const ShaderParameters& params,
 }
 
 std::tuple<GLuint, BaseBindings> CachedShader::GetProgramHandle(const ProgramVariant& variant) {
-    const auto [entry, is_cache_miss] = programs.try_emplace(variant);
+    UpdateVariant();
+
+    const auto [entry, is_cache_miss] = curr_variant->programs.try_emplace(variant);
     auto& program = entry->second;
     if (is_cache_miss) {
-        Tegra::Engines::ConstBufferEngineInterface* engine = nullptr;
-        if (program_type == ProgramType::Compute) {
-            engine = &system.GPU().KeplerCompute();
-        } else {
-            engine = &system.GPU().Maxwell3D();
-        }
-        ConstBufferLocker locker(GetEnginesShaderType(program_type), *engine);
         program = BuildShader(device, unique_identifier, program_type, program_code, program_code_b,
-                              variant, locker);
-        disk_cache.SaveUsage(GetUsage(variant, locker));
+                              variant, *curr_variant->locker);
+        disk_cache.SaveUsage(GetUsage(variant, *curr_variant->locker));
 
         LabelGLObject(GL_PROGRAM, program->handle, cpu_addr);
     }
@@ -408,6 +447,25 @@ std::tuple<GLuint, BaseBindings> CachedShader::GetProgramHandle(const ProgramVar
     return {program->handle, base_bindings};
 }
 
+void CachedShader::UpdateVariant() {
+    if (curr_variant && !curr_variant->locker->IsConsistent()) {
+        curr_variant = nullptr;
+    }
+    if (!curr_variant) {
+        for (auto& variant : locker_variants) {
+            if (variant->locker->IsConsistent()) {
+                curr_variant = variant.get();
+            }
+        }
+    }
+    if (!curr_variant) {
+        auto& new_variant = locker_variants.emplace_back();
+        new_variant = std::make_unique<LockerVariant>();
+        new_variant->locker = MakeLocker(system, program_type);
+        curr_variant = new_variant.get();
+    }
+}
+
 ShaderDiskCacheUsage CachedShader::GetUsage(const ProgramVariant& variant,
                                             const ConstBufferLocker& locker) const {
     ShaderDiskCacheUsage usage;
@@ -475,21 +533,11 @@ void ShaderCacheOpenGL::LoadDiskCache(const std::atomic_bool& stop_loading,
                 }
             }
             if (!shader) {
-                ConstBufferLocker locker(GetEnginesShaderType(unspecialized.program_type));
-                for (const auto& key : usage.keys) {
-                    const auto [buffer, offset] = key.first;
-                    locker.InsertKey(buffer, offset, key.second);
-                }
-                for (const auto& [offset, sampler] : usage.bound_samplers) {
-                    locker.InsertBoundSampler(offset, sampler);
-                }
-                for (const auto& [key, sampler] : usage.bindless_samplers) {
-                    const auto [buffer, offset] = key;
-                    locker.InsertBindlessSampler(buffer, offset, sampler);
-                }
+                auto locker{MakeLocker(system, unspecialized.program_type)};
+                FillLocker(*locker, usage);
                 shader = BuildShader(device, usage.unique_identifier, unspecialized.program_type,
                                      unspecialized.code, unspecialized.code_b, usage.variant,
-                                     locker, true);
+                                     *locker, true);
             }
 
             std::scoped_lock lock{mutex};

src/video_core/renderer_opengl/gl_shader_cache.h

@@ -21,6 +21,7 @@
 #include "video_core/renderer_opengl/gl_resource_manager.h"
 #include "video_core/renderer_opengl/gl_shader_decompiler.h"
 #include "video_core/renderer_opengl/gl_shader_disk_cache.h"
+#include "video_core/shader/const_buffer_locker.h"
 #include "video_core/shader/shader_ir.h"
 
 namespace Core {
@@ -31,10 +32,6 @@ namespace Core::Frontend {
 class EmuWindow;
 }
 
-namespace VideoCommon::Shader {
-class ConstBufferLocker;
-}
-
 namespace OpenGL {
 
 class CachedShader;
@@ -92,10 +89,17 @@ public:
     std::tuple<GLuint, BaseBindings> GetProgramHandle(const ProgramVariant& variant);
 
 private:
+    struct LockerVariant {
+        std::unique_ptr<VideoCommon::Shader::ConstBufferLocker> locker;
+        std::unordered_map<ProgramVariant, CachedProgram> programs;
+    };
+
     explicit CachedShader(const ShaderParameters& params, ProgramType program_type,
                           GLShader::ShaderEntries entries, ProgramCode program_code,
                           ProgramCode program_code_b);
 
+    void UpdateVariant();
+
     ShaderDiskCacheUsage GetUsage(const ProgramVariant& variant,
                                   const VideoCommon::Shader::ConstBufferLocker& locker) const;
 
@@ -113,7 +117,8 @@ private:
     ProgramCode program_code;
     ProgramCode program_code_b;
 
-    std::unordered_map<ProgramVariant, CachedProgram> programs;
+    LockerVariant* curr_variant = nullptr;
+    std::vector<std::unique_ptr<LockerVariant>> locker_variants;
 };
 
 class ShaderCacheOpenGL final : public RasterizerCache<Shader> {

src/video_core/shader/const_buffer_locker.cpp

@@ -82,23 +82,27 @@ bool ConstBufferLocker::IsConsistent() const {
         return false;
     }
     return std::all_of(keys.begin(), keys.end(),
-                       [](const auto& key) {
-                           const auto [value, other_value] = key.first;
-                           return value == other_value;
+                       [this](const auto& pair) {
+                           const auto [cbuf, offset] = pair.first;
+                           const auto value = pair.second;
+                           return value == engine->AccessConstBuffer32(stage, cbuf, offset);
                        }) &&
            std::all_of(bound_samplers.begin(), bound_samplers.end(),
                        [this](const auto& sampler) {
                            const auto [key, value] = sampler;
-                           const auto other_value = engine->AccessBoundSampler(stage, key);
-                           return value == other_value;
+                           return value == engine->AccessBoundSampler(stage, key);
                        }) &&
-           std::all_of(
-               bindless_samplers.begin(), bindless_samplers.end(), [this](const auto& sampler) {
-                   const auto [cbuf, offset] = sampler.first;
-                   const auto value = sampler.second;
-                   const auto other_value = engine->AccessBindlessSampler(stage, cbuf, offset);
-                   return value == other_value;
-               });
+           std::all_of(bindless_samplers.begin(), bindless_samplers.end(),
+                       [this](const auto& sampler) {
+                           const auto [cbuf, offset] = sampler.first;
+                           const auto value = sampler.second;
+                           return value == engine->AccessBindlessSampler(stage, cbuf, offset);
+                       });
+}
+
+bool ConstBufferLocker::HasEqualKeys(const ConstBufferLocker& rhs) const {
+    return keys == rhs.keys && bound_samplers == rhs.bound_samplers &&
+           bindless_samplers == rhs.bindless_samplers;
 }
 
 } // namespace VideoCommon::Shader

src/video_core/shader/const_buffer_locker.h

@@ -44,6 +44,9 @@ public:
     /// the same value, false otherwise;
     bool IsConsistent() const;
 
+    /// Returns true if the keys are equal to the other ones in the locker.
+    bool HasEqualKeys(const ConstBufferLocker& rhs) const;
+
     /// Gives an getter to the const buffer keys in the database.
     const KeyMap& GetKeys() const {
         return keys;