[VK] Rework SPIRV Shader Optimization (#238)

The actual SPIRV Shader Optimization option doesn't seem to do anything as long as it isn't vinculed, so let's rework it to make it work

Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Co-authored-by: echosys <echosys@noreply.localhost>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/238

.gitmodules

@@ -64,3 +64,6 @@
 [submodule "externals/sirit/externals/SPIRV-Headers"]
 	path = externals/sirit/externals/SPIRV-Headers
 	url = https://github.com/KhronosGroup/SPIRV-Headers.git
+[submodule "externals/SPIRV-Tools"]
+	path = externals/SPIRV-Tools
+	url = https://github.com/KhronosGroup/SPIRV-Tools.git

CMakeLists.txt

@@ -49,6 +49,8 @@ option(YUZU_USE_EXTERNAL_VULKAN_HEADERS "Use Vulkan-Headers from externals" ON)
 
 option(YUZU_USE_EXTERNAL_VULKAN_UTILITY_LIBRARIES "Use Vulkan-Utility-Libraries from externals" ON)
 
+option(YUZU_USE_EXTERNAL_VULKAN_SPIRV_TOOLS "Use SPIRV-Tools from externals" ON)
+
 option(YUZU_USE_QT_MULTIMEDIA "Use QtMultimedia for Camera" OFF)
 
 option(YUZU_USE_QT_WEB_ENGINE "Use QtWebEngine for web applet implementation" OFF)
@@ -329,6 +331,11 @@ if (NOT YUZU_USE_EXTERNAL_VULKAN_UTILITY_LIBRARIES)
     find_package(VulkanUtilityLibraries REQUIRED)
 endif()
 
+if (NOT YUZU_USE_EXTERNAL_VULKAN_SPIRV_TOOLS)
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(SPIRV-Tools REQUIRED SPIRV-Tools)
+endif()
+
 if (ENABLE_LIBUSB)
     find_package(libusb 1.0.24 MODULE)
 endif()

externals/CMakeLists.txt

@@ -160,6 +160,12 @@ if (YUZU_USE_EXTERNAL_VULKAN_UTILITY_LIBRARIES)
     add_subdirectory(Vulkan-Utility-Libraries)
 endif()
 
+# SPIRV-Tools
+if (YUZU_USE_EXTERNAL_VULKAN_SPIRV_TOOLS)
+    set(SPIRV_SKIP_EXECUTABLES ON)
+    add_subdirectory(SPIRV-Tools)
+endif()
+
 # Boost headers
 add_subdirectory(boost-headers)
 

externals/dynarmic/src/dynarmic/backend/x64/abi.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 /* This file is part of the dynarmic project.
  * Copyright (c) 2020 MerryMage
  * SPDX-License-Identifier: 0BSD

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/Settings.kt

@@ -127,14 +127,14 @@ object Settings {
         }
     }
 
-     enum class OptimizeSpirvOutput(val int: Int) {
-         Never(0),
-         OnLoad(1),
-         Always(2);
+    enum class OptimizeSpirvOutput(val int: Int) {
+        Never(0),
+        OnLoad(1),
+        Always(2);
 
-         companion object {
-             fun from(int: Int): OptimizeSpirvOutput =
-                 entries.firstOrNull { it.int == int } ?: OnLoad
-         }
-     }
+        companion object {
+            fun from(int: Int): OptimizeSpirvOutput =
+                entries.firstOrNull { it.int == int } ?: OnLoad
+        }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -569,14 +569,14 @@ abstract class SettingsItem(
                 )
             )
             put(
-                 SingleChoiceSetting(
-                     IntSetting.RENDERER_OPTIMIZE_SPIRV_OUTPUT,
-                     titleId = R.string.renderer_optimize_spirv_output,
-                     descriptionId = R.string.renderer_optimize_spirv_output_description,
-                     choicesId = R.array.optimizeSpirvOutputEntries,
-                     valuesId = R.array.optimizeSpirvOutputValues
-                 )
-             )
+                SingleChoiceSetting(
+                    IntSetting.RENDERER_OPTIMIZE_SPIRV_OUTPUT,
+                    titleId = R.string.renderer_optimize_spirv_output,
+                    descriptionId = R.string.renderer_optimize_spirv_output_description,
+                    choicesId = R.array.optimizeSpirvOutputEntries,
+                    valuesId = R.array.optimizeSpirvOutputValues
+                )
+            )
             put(
                 SwitchSetting(
                     BooleanSetting.RENDERER_ASYNCHRONOUS_SHADERS,

src/core/arm/nce/arm_nce.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/core/hle/service/sockets/sfdnsres.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/shader_recompiler/CMakeLists.txt

@@ -242,7 +242,13 @@ add_library(shader_recompiler STATIC
     varying_state.h
 )
 
-target_link_libraries(shader_recompiler PUBLIC common fmt::fmt sirit)
+if (YUZU_USE_EXTERNAL_VULKAN_SPIRV_TOOLS)
+    set(SPIRV_TOOLS_LIBRARY SPIRV-Tools-opt)
+else()
+    set(SPIRV_TOOLS_LIBRARY SPIRV-Tools-opt SPIRV-Tools SPIRV-Tools-link)
+endif()
+
+target_link_libraries(shader_recompiler PUBLIC common fmt::fmt sirit ${SPIRV_TOOLS_LIBRARY})
 
 if (MSVC)
     target_compile_options(shader_recompiler PRIVATE

src/shader_recompiler/backend/spirv/emit_spirv.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -6,6 +9,7 @@
 #include <type_traits>
 #include <utility>
 #include <vector>
+#include <spirv-tools/optimizer.hpp>
 
 #include "common/settings.h"
 #include "shader_recompiler/backend/spirv/emit_spirv.h"
@@ -481,7 +485,7 @@ void PatchPhiNodes(IR::Program& program, EmitContext& ctx) {
 } // Anonymous namespace
 
 std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_info,
-                           IR::Program& program, Bindings& bindings) {
+                           IR::Program& program, Bindings& bindings, bool optimize) {
     EmitContext ctx{profile, runtime_info, program, bindings};
     const Id main{DefineMain(ctx, program)};
     DefineEntryPoint(program, ctx, main);
@@ -493,7 +497,28 @@ std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_in
     SetupCapabilities(profile, program.info, ctx);
     SetupTransformFeedbackCapabilities(ctx, main);
     PatchPhiNodes(program, ctx);
-    return ctx.Assemble();
+
+    if (!optimize) {
+        return ctx.Assemble();
+    } else {
+        std::vector<u32> spirv = ctx.Assemble();
+
+        spvtools::Optimizer spv_opt(SPV_ENV_VULKAN_1_3);
+        spv_opt.SetMessageConsumer([](spv_message_level_t, const char*, const spv_position_t&,
+                                      const char* m) { LOG_ERROR(HW_GPU, "spirv-opt: {}", m); });
+        spv_opt.RegisterPerformancePasses();
+
+        spvtools::OptimizerOptions opt_options;
+        opt_options.set_run_validator(false);
+
+        std::vector<u32> result;
+        if (!spv_opt.Run(spirv.data(), spirv.size(), &result, opt_options)) {
+            LOG_ERROR(HW_GPU,
+                      "Failed to optimize SPIRV shader output, continuing without optimization");
+            result = std::move(spirv);
+        }
+        return result;
+    }
 }
 
 Id EmitPhi(EmitContext& ctx, IR::Inst* inst) {

src/shader_recompiler/backend/spirv/emit_spirv.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -31,11 +34,12 @@ constexpr u32 RESCALING_LAYOUT_DOWN_FACTOR_OFFSET = offsetof(RescalingLayout, do
 constexpr u32 RENDERAREA_LAYOUT_OFFSET = offsetof(RenderAreaLayout, render_area);
 
 [[nodiscard]] std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_info,
-                                         IR::Program& program, Bindings& bindings);
+                                         IR::Program& program, Bindings& bindings, bool optimize);
 
-[[nodiscard]] inline std::vector<u32> EmitSPIRV(const Profile& profile, IR::Program& program) {
+[[nodiscard]] inline std::vector<u32> EmitSPIRV(const Profile& profile, IR::Program& program,
+                                                bool optimize) {
     Bindings binding;
-    return EmitSPIRV(profile, {}, program, binding);
+    return EmitSPIRV(profile, {}, program, binding, optimize);
 }
 
 } // namespace Shader::Backend::SPIRV

src/shader_recompiler/frontend/maxwell/translate/impl/warp_shuffle.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/shader_recompiler/ir_opt/texture_pass.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/video_core/buffer_cache/buffer_cache.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 

src/video_core/buffer_cache/buffer_cache_base.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 

src/video_core/cdma_pusher.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Ryujinx Team and Contributors
 // SPDX-License-Identifier: MIT
 

src/video_core/delayed_destruction_ring.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/video_core/host1x/ffmpeg/ffmpeg.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/video_core/renderer_opengl/gl_shader_cache.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -178,6 +181,7 @@ ShaderCache::ShaderCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
       state_tracker{state_tracker_}, shader_notify{shader_notify_},
       use_asynchronous_shaders{device.UseAsynchronousShaders()},
       strict_context_required{device.StrictContextRequired()},
+      optimize_spirv_output{Settings::values.optimize_spirv_output.GetValue() != Settings::SpirvOptimizeMode::Never},
       profile{
           .supported_spirv = 0x00010000,
 
@@ -344,6 +348,10 @@ void ShaderCache::LoadDiskResources(u64 title_id, std::stop_token stop_loading,
     if (!use_asynchronous_shaders) {
         workers.reset();
     }
+
+    if (Settings::values.optimize_spirv_output.GetValue() != Settings::SpirvOptimizeMode::Always) {
+        this->optimize_spirv_output = false;
+    }
 }
 
 GraphicsPipeline* ShaderCache::CurrentGraphicsPipeline() {
@@ -537,7 +545,8 @@ std::unique_ptr<GraphicsPipeline> ShaderCache::CreateGraphicsPipeline(
             break;
         case Settings::ShaderBackend::SpirV:
             ConvertLegacyToGeneric(program, runtime_info);
-            sources_spirv[stage_index] = EmitSPIRV(profile, runtime_info, program, binding);
+            sources_spirv[stage_index] =
+                EmitSPIRV(profile, runtime_info, program, binding, this->optimize_spirv_output);
             break;
         }
         previous_program = &program;
@@ -596,7 +605,7 @@ std::unique_ptr<ComputePipeline> ShaderCache::CreateComputePipeline(
         code = EmitGLASM(profile, info, program);
         break;
     case Settings::ShaderBackend::SpirV:
-        code_spirv = EmitSPIRV(profile, program);
+        code_spirv = EmitSPIRV(profile, program, this->optimize_spirv_output);
         break;
     }
 

src/video_core/renderer_vulkan/present/layer.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -311,6 +314,7 @@ PipelineCache::PipelineCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
       texture_cache{texture_cache_}, shader_notify{shader_notify_},
       use_asynchronous_shaders{Settings::values.use_asynchronous_shaders.GetValue()},
       use_vulkan_pipeline_cache{Settings::values.use_vulkan_driver_pipeline_cache.GetValue()},
+      optimize_spirv_output{Settings::values.optimize_spirv_output.GetValue() != Settings::SpirvOptimizeMode::Never},
       workers(device.HasBrokenParallelShaderCompiling() ? 1ULL : GetTotalPipelineWorkers(),
               "VkPipelineBuilder"),
       serialization_thread(1, "VkPipelineSerialization") {
@@ -579,6 +583,10 @@ void PipelineCache::LoadDiskResources(u64 title_id, std::stop_token stop_loading
     if (state.statistics) {
         state.statistics->Report();
     }
+
+    if (Settings::values.optimize_spirv_output.GetValue() != Settings::SpirvOptimizeMode::Always) {
+        this->optimize_spirv_output = false;
+    }
 }
 
 GraphicsPipeline* PipelineCache::CurrentGraphicsPipelineSlowPath() {
@@ -688,7 +696,7 @@ std::unique_ptr<GraphicsPipeline> PipelineCache::CreateGraphicsPipeline(
 
         const auto runtime_info{MakeRuntimeInfo(programs, key, program, previous_stage)};
         ConvertLegacyToGeneric(program, runtime_info);
-        const std::vector<u32> code{EmitSPIRV(profile, runtime_info, program, binding)};
+        const std::vector<u32> code{EmitSPIRV(profile, runtime_info, program, binding, this->optimize_spirv_output)};
         device.SaveShader(code);
         modules[stage_index] = BuildShader(device, code);
         if (device.HasDebuggingToolAttached()) {
@@ -782,7 +790,7 @@ std::unique_ptr<ComputePipeline> PipelineCache::CreateComputePipeline(
     }
 
     auto program{TranslateProgram(pools.inst, pools.block, env, cfg, host_info)};
-    const std::vector<u32> code{EmitSPIRV(profile, program)};
+    const std::vector<u32> code{EmitSPIRV(profile, program, this->optimize_spirv_output)};
     device.SaveShader(code);
     vk::ShaderModule spv_module{BuildShader(device, code)};
     if (device.HasDebuggingToolAttached()) {

src/video_core/texture_cache/texture_cache.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 

src/video_core/texture_cache/texture_cache_base.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/yuzu/configuration/shared_translation.cpp

@@ -463,6 +463,7 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QWidget* parent)
                               PAIR(AppletMode, HLE, tr("Custom frontend")),
                               PAIR(AppletMode, LLE, tr("Real applet")),
                           }});
+
     translations->insert({Settings::EnumMetadata<Settings::SpirvOptimizeMode>::Index(),
                           {
                               PAIR(SpirvOptimizeMode, Never, tr("Never")),