Merge branch 'master' into extdata

2025-04-05 22:55:41 +13:00 · 2025-02-09 23:01:12 +02:00 · 2025-02-09 23:01:12 +02:00 · 701fd0f446
commit 701fd0f446
parent a9c2b05604 7d5cedf476
30 changed files with 286 additions and 58 deletions
--- a/.github/workflows/Android_Build.yml
+++ b/.github/workflows/Android_Build.yml
@ -23,6 +23,9 @@ jobs:
    - name: Fetch submodules
      run: git submodule update --init --recursive

+    - name: Setup CCache
+      uses: hendrikmuhs/ccache-action@v1.2
+
    - name: Set up gradle caches
      uses: actions/cache@v4
      with:
@ -36,7 +39,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -47,7 +50,7 @@ jobs:
        java-version: '17'

    - name: Configure CMake
-      run: cmake -B ${{github.workspace}}/build -DBUILD_HYDRA_CORE=1 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake -DANDROID_ABI=x86_64 -DENABLE_VULKAN=0 -DENABLE_USER_BUILD=ON
+      run: cmake -B ${{github.workspace}}/build -DBUILD_HYDRA_CORE=1 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake -DANDROID_ABI=x86_64 -DENABLE_VULKAN=0 -DENABLE_USER_BUILD=ON -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache

    - name: Build
      run: |
@ -88,6 +91,9 @@ jobs:
    - name: Fetch submodules
      run: git submodule update --init --recursive

+    - name: Setup CCache
+      uses: hendrikmuhs/ccache-action@v1.2
+
    - name: Set up gradle caches
      uses: actions/cache@v4
      with:
@ -101,7 +107,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -112,7 +118,7 @@ jobs:
        java-version: '17'

    - name: Configure CMake
-      run: cmake -B ${{github.workspace}}/build -DBUILD_HYDRA_CORE=1 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake -DANDROID_ABI=arm64-v8a -DENABLE_VULKAN=0 -DENABLE_USER_BUILD=ON -DCMAKE_CXX_FLAGS="-march=armv8-a+crypto"
+      run: cmake -B ${{github.workspace}}/build -DBUILD_HYDRA_CORE=1 -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake -DANDROID_ABI=arm64-v8a -DENABLE_VULKAN=0 -DENABLE_USER_BUILD=ON -DCMAKE_CXX_FLAGS="-march=armv8-a+crypto" -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache

    - name: Build
      run: |
--- a/.github/workflows/HTTP_Build.yml
+++ b/.github/workflows/HTTP_Build.yml
@ -32,7 +32,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/.github/workflows/Hydra_Build.yml
+++ b/.github/workflows/Hydra_Build.yml
@ -22,7 +22,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -65,7 +65,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -118,7 +118,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -165,7 +165,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -180,3 +180,36 @@ jobs:
      with:
        name: Android Hydra core
        path: '${{github.workspace}}/build/libAlber.so'
+
+  ARM-Libretro:
+    runs-on: ubuntu-24.04-arm
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Fetch submodules
+      run: git submodule update --init --recursive
+
+    - name: Install misc packages
+      run: |
+       sudo apt-get update && sudo apt install libx11-dev libxext-dev libgl1 libglx-mesa0 mesa-common-dev libfuse2 libwayland-dev
+      
+    - name: Install newer Clang
+      run: |
+       wget https://apt.llvm.org/llvm.sh
+       chmod +x ./llvm.sh
+       sudo ./llvm.sh 17
+
+    - name: Configure CMake
+      run: |
+        cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_C_COMPILER=clang-17 -DCMAKE_CXX_COMPILER=clang++-17 -DENABLE_USER_BUILD=ON -DBUILD_LIBRETRO_CORE=ON -DENABLE_VULKAN=OFF -DCRYPTOPP_OPT_DISABLE_ASM=ON
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+    - name: Upload Libretro core
+      uses: actions/upload-artifact@v4
+      with:
+        name: Linux arm64 Libretro core
+        path: |
+          ${{github.workspace}}/build/panda3ds_libretro.so
+          ${{github.workspace}}/docs/libretro/panda3ds_libretro.info
--- a/.github/workflows/Linux_AppImage_Build.yml
+++ b/.github/workflows/Linux_AppImage_Build.yml
@ -35,7 +35,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/.github/workflows/Linux_Build.yml
+++ b/.github/workflows/Linux_Build.yml
@ -35,7 +35,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/.github/workflows/MacOS_Build.yml
+++ b/.github/workflows/MacOS_Build.yml
@ -27,7 +27,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/.github/workflows/Qt_Build.yml
+++ b/.github/workflows/Qt_Build.yml
@ -28,7 +28,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -66,7 +66,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

@ -164,7 +164,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/.github/workflows/Windows_Build.yml
+++ b/.github/workflows/Windows_Build.yml
@ -26,7 +26,7 @@ jobs:
    - name: Setup Vulkan SDK
      uses: humbletim/setup-vulkan-sdk@v1.2.0
      with:
-        vulkan-query-version: latest
+        vulkan-query-version: 1.3.296.0
        vulkan-use-cache: true
        vulkan-components: Vulkan-Headers, Vulkan-Loader, SPIRV-Tools, Glslang

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -64,6 +64,7 @@ option(BUILD_HYDRA_CORE "Build a Hydra core" OFF)
 option(BUILD_LIBRETRO_CORE "Build a Libretro core" OFF)
 option(ENABLE_RENDERDOC_API "Build with support for Renderdoc's capture API for graphics debugging" ON)
 option(DISABLE_SSE4 "Build with SSE4 instructions disabled, may reduce performance" OFF)
+option(USE_LIBRETRO_AUDIO "Enable to use the LR audio device with the LR core. Otherwise our own device is used" OFF)

 set(OPENGL_PROFILE ${DEFAULT_OPENGL_PROFILE} CACHE STRING "OpenGL profile to use if OpenGL is enabled. Valid values are 'OpenGL' and 'OpenGLES'.")
 set_property(CACHE OPENGL_PROFILE PROPERTY STRINGS OpenGL OpenGLES)
@ -80,6 +81,10 @@ endif()
 if(BUILD_LIBRETRO_CORE)
    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
    add_compile_definitions(__LIBRETRO__)
+
+    if(USE_LIBRETRO_AUDIO)
+        add_compile_definitions(USE_LIBRETRO_AUDIO_DEVICE)
+    endif()
 endif()

 if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND ENABLE_USER_BUILD)
@ -157,7 +162,6 @@ if(ENABLE_DISCORD_RPC AND NOT ANDROID)
    include_directories(third_party/discord-rpc/include)
 endif()

-
 if (NOT ANDROID)
    if (USE_SYSTEM_SDL2)
        find_package(SDL2 CONFIG REQUIRED)
@ -402,7 +406,8 @@ set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/termcolor.hpp
                 include/align.hpp include/audio/aac_decoder.hpp include/PICA/pica_simd.hpp include/services/fonts.hpp
                 include/audio/audio_interpolation.hpp include/audio/hle_mixer.hpp include/audio/dsp_simd.hpp
                 include/services/dsp_firmware_db.hpp include/frontend_settings.hpp include/fs/archive_twl_photo.hpp
-                 include/fs/archive_twl_sound.hpp include/fs/archive_card_spi.hpp include/services/ns.hpp
+                 include/fs/archive_twl_sound.hpp include/fs/archive_card_spi.hpp include/services/ns.hpp include/audio/audio_device.hpp
+                 include/audio/audio_device_interface.hpp include/audio/libretro_audio_device.hpp
 )

 cmrc_add_resource_library(
--- a/include/audio/audio_device.hpp
+++ b/include/audio/audio_device.hpp
@ -0,0 +1,9 @@
+#pragma once
+
+#if defined(__LIBRETRO__) && defined(USE_LIBRETRO_AUDIO_DEVICE)
+#include "audio/libretro_audio_device.hpp"
+using AudioDevice = LibretroAudioDevice;
+#else
+#include "audio/miniaudio_device.hpp"
+using AudioDevice = MiniAudioDevice;
+#endif
--- a/include/audio/audio_device_interface.hpp
+++ b/include/audio/audio_device_interface.hpp
@ -0,0 +1,36 @@
+#pragma once
+#include <array>
+
+#include "config.hpp"
+#include "helpers.hpp"
+#include "ring_buffer.hpp"
+
+class AudioDeviceInterface {
+  protected:
+	static constexpr usize maxFrameCount = 0x2000;
+
+	using Samples = Common::RingBuffer<s16, maxFrameCount * 2>;
+	using RenderBatchCallback = usize (*)(const s16*, usize);
+
+	Samples* samples = nullptr;
+
+	const AudioDeviceConfig& audioSettings;
+	// Store the last stereo sample we output. We play this when underruning to avoid pops.
+	std::array<s16, 2> lastStereoSample{};
+
+  public:
+	AudioDeviceInterface(Samples* samples, const AudioDeviceConfig& audioSettings) : samples(samples), audioSettings(audioSettings) {}
+
+	bool running = false;
+	Samples* getSamples() { return samples; }
+
+	// If safe is on, we create a null audio device
+	virtual void init(Samples& samples, bool safe = false) = 0;
+	virtual void close() = 0;
+
+	virtual void start() = 0;
+	virtual void stop() = 0;
+
+	// Only used for audio devices that render multiple audio frames in one go, eg the libretro audio device.
+	virtual void renderBatch(RenderBatchCallback callback) {}
+};
--- a/include/audio/libretro_audio_device.hpp
+++ b/include/audio/libretro_audio_device.hpp
@ -0,0 +1,61 @@
+#pragma once
+#include <cstring>
+
+#include "audio/audio_device_interface.hpp"
+
+class LibretroAudioDevice final : public AudioDeviceInterface {
+	bool initialized = false;
+
+  public:
+	LibretroAudioDevice(const AudioDeviceConfig& audioSettings) : AudioDeviceInterface(nullptr, audioSettings), initialized(false) {
+		running = false;
+	}
+
+	void init(Samples& samples, bool safe = false) override {
+		this->samples = &samples;
+
+		initialized = true;
+		running = false;
+	}
+
+	void close() override {
+		initialized = false;
+		running = false;
+	};
+
+	void start() override { running = true; }
+	void stop() override { running = false; };
+
+	void renderBatch(RenderBatchCallback callback) override {
+		if (running) {
+			static constexpr usize sampleRate = 32768;            // 3DS samples per second
+			static constexpr usize frameCount = sampleRate / 60;  // 3DS samples per video frame
+			static constexpr usize channelCount = 2;
+			static s16 audioBuffer[frameCount * channelCount];
+
+			usize samplesWritten = 0;
+			samplesWritten += samples->pop(audioBuffer, frameCount * channelCount);
+
+			// Get the last sample for underrun handling
+			if (samplesWritten != 0) {
+				std::memcpy(&lastStereoSample[0], &audioBuffer[(samplesWritten - 1) * 2], sizeof(lastStereoSample));
+			}
+
+			// If underruning, copy the last output sample
+			{
+				s16* pointer = &audioBuffer[samplesWritten * 2];
+				s16 l = lastStereoSample[0];
+				s16 r = lastStereoSample[1];
+
+				for (usize i = samplesWritten; i < frameCount; i++) {
+					*pointer++ = l;
+					*pointer++ = r;
+				}
+			}
+
+			callback(audioBuffer, sizeof(audioBuffer) / (channelCount * sizeof(s16)));
+		}
+	}
+
+	bool isInitialized() const { return initialized; }
+};
--- a/include/audio/miniaudio_device.hpp
+++ b/include/audio/miniaudio_device.hpp
@ -3,39 +3,31 @@
 #include <string>
 #include <vector>

-#include "config.hpp"
-#include "helpers.hpp"
+#include "audio/audio_device_interface.hpp"
 #include "miniaudio.h"
-#include "ring_buffer.hpp"

-class MiniAudioDevice {
-	using Samples = Common::RingBuffer<ma_int16, 0x2000 * 2>;
+class MiniAudioDevice final : public AudioDeviceInterface {
 	static constexpr ma_uint32 sampleRate = 32768;  // 3DS sample rate
 	static constexpr ma_uint32 channelCount = 2;    // Audio output is stereo

+	bool initialized = false;
+
 	ma_device device;
 	ma_context context;
 	ma_device_config deviceConfig;
-	Samples* samples = nullptr;
-
-	const AudioDeviceConfig& audioSettings;
-
-	bool initialized = false;
-	bool running = false;

 	// Store the last stereo sample we output. We play this when underruning to avoid pops.
-	std::array<s16, 2> lastStereoSample;
 	std::vector<std::string> audioDevices;

  public:
 	MiniAudioDevice(const AudioDeviceConfig& audioSettings);

 	// If safe is on, we create a null audio device
-	void init(Samples& samples, bool safe = false);
-	void close();
+	void init(Samples& samples, bool safe = false) override;
+	void close() override;

-	void start();
-	void stop();
+	void start() override;
+	void stop() override;

 	bool isInitialized() const { return initialized; }
 };
--- a/include/cpu_dynarmic.hpp
+++ b/include/cpu_dynarmic.hpp
@ -181,5 +181,7 @@ class CPU {
    void addTicks(u64 ticks) { env.AddTicks(ticks); }

    void clearCache() { jit->ClearCache(); }
+    void clearCacheRange(u32 start, u32 size) { jit->InvalidateCacheRange(start, size); }
+
    void runFrame();
 };
--- a/include/emulator.hpp
+++ b/include/emulator.hpp
@ -7,8 +7,8 @@
 #include <span>

 #include "PICA/gpu.hpp"
+#include "audio/audio_device.hpp"
 #include "audio/dsp_core.hpp"
-#include "audio/miniaudio_device.hpp"
 #include "cheats.hpp"
 #include "config.hpp"
 #include "cpu.hpp"
@ -48,14 +48,14 @@ class Emulator {
 	Scheduler scheduler;

 	Crypto::AESEngine aesEngine;
-	MiniAudioDevice audioDevice;
+	AudioDevice audioDevice;
 	Cheats cheats;

  public:
 	static constexpr u32 width = 400;
 	static constexpr u32 height = 240 * 2;  // * 2 because 2 screens
 	ROMType romType = ROMType::None;
-	bool running = false;         // Is the emulator running a game?
+	bool running = false;  // Is the emulator running a game?

  private:
 #ifdef PANDA3DS_ENABLE_HTTP_SERVER
@ -126,6 +126,7 @@ class Emulator {
 	LuaManager& getLua() { return lua; }
 	Scheduler& getScheduler() { return scheduler; }
 	Memory& getMemory() { return memory; }
+	AudioDeviceInterface& getAudioDevice() { return audioDevice; }

 	RendererType getRendererType() const { return config.rendererType; }
 	Renderer* getRenderer() { return gpu.getRenderer(); }
--- a/include/kernel/kernel.hpp
+++ b/include/kernel/kernel.hpp
@ -175,6 +175,8 @@ public:
 	void svcSignalEvent();
 	void svcSetTimer();
 	void svcSleepThread();
+	void svcInvalidateInstructionCacheRange();
+	void svcInvalidateEntireInstructionCache();
 	void connectToPort();
 	void outputDebugString();
 	void waitSynchronization1();
@ -250,4 +252,6 @@ public:

 	void sendGPUInterrupt(GPUInterrupt type) { serviceManager.sendGPUInterrupt(type); }
 	void clearInstructionCache();
+	void clearInstructionCacheRange(u32 start, u32 size);
+	u32 getSharedFontVaddr();
 };
--- a/include/kernel/resource_limits.hpp
+++ b/include/kernel/resource_limits.hpp
@ -19,7 +19,7 @@ struct ResourceLimitValues {
 // APPLICATION resource limit
 static constexpr ResourceLimitValues appResourceLimits = {
 	.maxPriority = 0x18,
-	.maxCommit = 0x4000000,
+	.maxCommit = 64_MB + 16_MB,  // We're currently giving 80MB to all apps. TODO: Implement extended memory properly
 	.maxThreads = 0x20,
 	.maxEvents = 0x20,
 	.maxMutexes = 0x20,
@ -33,7 +33,7 @@ static constexpr ResourceLimitValues appResourceLimits = {
 // SYS_APPLET resource limit
 static constexpr ResourceLimitValues sysAppletResourceLimits = {
 	.maxPriority = 0x4,
-	.maxCommit = 0x5E00000,
+	.maxCommit = 0x5E00000 - 16_MB,
 	.maxThreads = 0x1D,
 	.maxEvents = 0xB,
 	.maxMutexes = 0x8,
--- a/include/memory.hpp
+++ b/include/memory.hpp
@ -132,7 +132,7 @@ public:
 	static constexpr u32 totalPageCount = 1 << (32 - pageShift);
 	
 	static constexpr u32 FCRAM_SIZE = u32(128_MB);
-	static constexpr u32 FCRAM_APPLICATION_SIZE = u32(64_MB);
+	static constexpr u32 FCRAM_APPLICATION_SIZE = u32(80_MB);
 	static constexpr u32 FCRAM_PAGE_COUNT = FCRAM_SIZE / pageSize;
 	static constexpr u32 FCRAM_APPLICATION_PAGE_COUNT = FCRAM_APPLICATION_SIZE / pageSize;

--- a/include/renderer.hpp
+++ b/include/renderer.hpp
@ -53,6 +53,7 @@ class Renderer {

 	EmulatorConfig* emulatorConfig = nullptr;

+	void doSoftwareTextureCopy(u32 inputAddr, u32 outputAddr, u32 copySize, u32 inputWidth, u32 inputGap, u32 outputWidth, u32 outputGap);
  public:
 	Renderer(GPU& gpu, const std::array<u32, regNum>& internalRegs, const std::array<u32, extRegNum>& externalRegs);
 	virtual ~Renderer();
--- a/readme.md
+++ b/readme.md
@ -35,7 +35,7 @@ Panda3DS is still in the early stages of development. Many games boot, many don'

 For documenting game compatibility, make sure to visit the [games list repository](https://github.com/Panda3DS-emu/Panda3DS-Games-List). For miscellaneous issues or more technical issues, feel free to use this repo's issues tab.
 # Why?
-The 3DS emulation scene is already pretty mature, with offerings such as [Citra](https://github.com/citra-emu/citra) which can offer a great playing experience for most games in the library, [Corgi3DS](https://github.com/PSI-Rockin/Corgi3DS), an innovative LLE emulator, or [Mikage](https://mikage.app/). However, there's always room for more emulators! While Panda3DS was initially a mere curiosity, there's many different concepts I would like to explore with it in the future, such as:
+The 3DS emulation scene is already pretty mature, with offerings such as Citra which can offer a great playing experience for most games in the library, [Corgi3DS](https://github.com/PSI-Rockin/Corgi3DS), an innovative LLE emulator, or [Mikage](https://mikage.app/). However, there's always room for more emulators! While Panda3DS was initially a mere curiosity, there's many different concepts I would like to explore with it in the future, such as:

 - Virtualization. What motivated the creation of this emulator was actually a discussion on whether it is possible to get fast 3DS emulation on low-end hardware such as the Raspberry Pi 4, using the KVM API. At the moment, Panda3DS is powered by Dynarmic rather than using virtualization, but this is definitely a concept I want to explore in the future.

--- a/src/core/audio/miniaudio_device.cpp
+++ b/src/core/audio/miniaudio_device.cpp
@ -7,8 +7,9 @@

 #include "helpers.hpp"

-MiniAudioDevice::MiniAudioDevice(const AudioDeviceConfig& audioSettings)
-	: initialized(false), running(false), samples(nullptr), audioSettings(audioSettings) {}
+MiniAudioDevice::MiniAudioDevice(const AudioDeviceConfig& audioSettings) : AudioDeviceInterface(nullptr, audioSettings), initialized(false) {
+	running = false;
+}

 void MiniAudioDevice::init(Samples& samples, bool safe) {
 	this->samples = &samples;
@ -212,4 +213,4 @@ void MiniAudioDevice::close() {
 		ma_device_uninit(&device);
 		ma_context_uninit(&context);
 	}
-}
+}
--- a/src/core/kernel/kernel.cpp
+++ b/src/core/kernel/kernel.cpp
@ -69,6 +69,10 @@ void Kernel::serviceSVC(u32 svc) {
 		case 0x3A: getResourceLimitCurrentValues(); break;
 		case 0x3B: getThreadContext(); break;
 		case 0x3D: outputDebugString(); break;
+
+		// Luma SVCs
+		case 0x93: svcInvalidateInstructionCacheRange(); break;
+		case 0x94: svcInvalidateEntireInstructionCache(); break;
 		default: Helpers::panic("Unimplemented svc: %X @ %08X", svc, regs[15]); break;
 	}

@ -298,6 +302,23 @@ void Kernel::duplicateHandle() {
 }

 void Kernel::clearInstructionCache() { cpu.clearCache(); }
+void Kernel::clearInstructionCacheRange(u32 start, u32 size) { cpu.clearCacheRange(start, size); }
+
+void Kernel::svcInvalidateInstructionCacheRange() {
+	const u32 start = regs[0];
+	const u32 size = regs[1];
+	logSVC("svcInvalidateInstructionCacheRange(start = %08X, size = %08X)\n", start, size);
+
+	clearInstructionCacheRange(start, size);
+	regs[0] = Result::Success;
+}
+
+void Kernel::svcInvalidateEntireInstructionCache() {
+	logSVC("svcInvalidateEntireInstructionCache()\n");
+
+	clearInstructionCache();
+	regs[0] = Result::Success;
+}

 namespace SystemInfoType {
 	enum : u32 {
--- a/src/core/kernel/memory_management.cpp
+++ b/src/core/kernel/memory_management.cpp
@ -122,7 +122,10 @@ void Kernel::mapMemoryBlock() {
 	}

 	if (KernelHandles::isSharedMemHandle(block)) {
-		if (block == KernelHandles::FontSharedMemHandle && addr == 0) addr = 0x18000000;
+		if (block == KernelHandles::FontSharedMemHandle && addr == 0) {
+			addr = getSharedFontVaddr();
+		}
+
 		u8* ptr = mem.mapSharedMemory(block, addr, myPerms, otherPerms); // Map shared memory block

 		// Pass pointer to shared memory to the appropriate service
@ -216,3 +219,8 @@ void Kernel::unmapMemoryBlock() {
 	Helpers::warn("Stubbed svcUnmapMemoryBlock!");
 	regs[0] = Result::Success;
 }
+
+u32 Kernel::getSharedFontVaddr() {
+	// Place shared font at the very beginning of system FCRAM
+	return mem.getLinearHeapVaddr() + Memory::FCRAM_APPLICATION_SIZE;
+}
--- a/src/core/renderer_gl/renderer_gl.cpp
+++ b/src/core/renderer_gl/renderer_gl.cpp
@ -792,6 +792,8 @@ void RendererGL::textureCopy(u32 inputAddr, u32 outputAddr, u32 totalBytes, u32
 			shutUpCounter++;
 			printf("RendererGL::TextureCopy failed to locate src framebuffer!\n");
 		}
+
+		doSoftwareTextureCopy(inputAddr, outputAddr, copySize, inputWidth, inputGap, outputWidth, outputGap);
 		return;
 	}

--- a/src/core/renderer_mtl/renderer_mtl.cpp
+++ b/src/core/renderer_mtl/renderer_mtl.cpp
@ -426,7 +426,7 @@ void RendererMTL::textureCopy(u32 inputAddr, u32 outputAddr, u32 totalBytes, u32
 	// Find the source surface.
 	auto srcFramebuffer = getColorRenderTarget(inputAddr, PICA::ColorFmt::RGBA8, copyStride, copyHeight, false);
 	if (!srcFramebuffer) {
-		Helpers::warn("RendererMTL::TextureCopy failed to locate src framebuffer!\n");
+		doSoftwareTextureCopy(inputAddr, outputAddr, copySize, inputWidth, inputGap, outputWidth, outputGap);
 		return;
 	}
 	nextRenderPassName = "Clear before texture copy";
--- a/src/core/renderer_vk/renderer_vk.cpp
+++ b/src/core/renderer_vk/renderer_vk.cpp
@ -885,10 +885,17 @@ void RendererVK::display() {
 	}
 }

+// DynamicLoader is in a different namespace in different versions of Vulkan-Hpp
+#if VK_HEADER_VERSION >= 301
+using VulkanDynamicLoader = vk::detail::DynamicLoader;
+#else
+using VulkanDynamicLoader = vk::DynamicLoader;
+#endif
+
 void RendererVK::initGraphicsContext(SDL_Window* window) {
 	targetWindow = window;
 	// Resolve all instance function pointers
-	static vk::DynamicLoader dl;
+	static VulkanDynamicLoader dl;
 	VULKAN_HPP_DEFAULT_DISPATCHER.init(dl.getProcAddress<PFN_vkGetInstanceProcAddr>("vkGetInstanceProcAddr"));

 	// Create Instance
@ -1588,4 +1595,4 @@ void RendererVK::deinitGraphicsContext() {

 	// TODO: Make it so that depth and colour buffers get written back to 3DS memory
 	printf("RendererVK::DeinitGraphicsContext called\n");
-}
+}
--- a/src/core/services/apt.cpp
+++ b/src/core/services/apt.cpp
@ -391,7 +391,7 @@ void APTService::setScreencapPostPermission(u32 messagePointer) {
 void APTService::getSharedFont(u32 messagePointer) {
 	log("APT::GetSharedFont\n");

-	constexpr u32 fontVaddr = 0x18000000;
+	const u32 fontVaddr = kernel.getSharedFontVaddr();
 	mem.write32(messagePointer, IPC::responseHeader(0x44, 2, 2));
 	mem.write32(messagePointer + 4, Result::Success);
 	mem.write32(messagePointer + 8, fontVaddr);
--- a/src/core/services/ldr_ro.cpp
+++ b/src/core/services/ldr_ro.cpp
@ -22,6 +22,7 @@ namespace CROHeader {
 		NameOffset = 0x084,
 		NextCRO = 0x088,
 		PrevCRO = 0x08C,
+		FixedSize = 0x98,
 		OnUnresolved = 0x0AC,
 		CodeOffset = 0x0B0,
 		DataOffset = 0x0B8,
@ -167,6 +168,10 @@ public:
 		return mem.read32(croPointer + CROHeader::PrevCRO);
 	}

+	u32 getFixedSize() {
+		return mem.read32(croPointer + CROHeader::FixedSize);
+	}
+
 	void setNextCRO(u32 nextCRO) {
 		mem.write32(croPointer + CROHeader::NextCRO, nextCRO);
 	}
@ -1248,8 +1253,7 @@ void LDRService::initialize(u32 messagePointer) {
 		Helpers::panic("Failed to rebase CRS");
 	}

-	kernel.clearInstructionCache();
-
+	kernel.clearInstructionCacheRange(mapVaddr, size);
 	loadedCRS = mapVaddr;

 	mem.write32(messagePointer, IPC::responseHeader(0x1, 1, 0));
@ -1278,8 +1282,6 @@ void LDRService::linkCRO(u32 messagePointer) {
 		Helpers::panic("Failed to link CRO");
 	}

-	kernel.clearInstructionCache();
-
 	mem.write32(messagePointer, IPC::responseHeader(0x6, 1, 0));
 	mem.write32(messagePointer + 4, Result::Success);
 }
@ -1346,8 +1348,7 @@ void LDRService::loadCRO(u32 messagePointer, bool isNew) {

 	// TODO: add fixing
 	cro.fix(fixLevel);
-
-	kernel.clearInstructionCache();
+	kernel.clearInstructionCacheRange(mapVaddr, size);

 	if (isNew) {
 		mem.write32(messagePointer, IPC::responseHeader(0x9, 2, 0));
@ -1377,7 +1378,6 @@ void LDRService::unloadCRO(u32 messagePointer) {
 	}

 	CRO cro(mem, mapVaddr, true);
-
 	cro.unregisterCRO(loadedCRS);

 	if (!cro.unlink(loadedCRS)) {
@ -1388,8 +1388,7 @@ void LDRService::unloadCRO(u32 messagePointer) {
 		Helpers::panic("Failed to unrebase CRO");
 	}

-	kernel.clearInstructionCache();
-
+	kernel.clearInstructionCacheRange(mapVaddr, cro.getFixedSize());
 	mem.write32(messagePointer, IPC::responseHeader(0x5, 1, 0));
 	mem.write32(messagePointer + 4, Result::Success);
 }
--- a/src/libretro_core.cpp
+++ b/src/libretro_core.cpp
@ -389,6 +389,8 @@ void retro_run() {
 	emulator->runFrame();

 	videoCallback(RETRO_HW_FRAME_BUFFER_VALID, emulator->width, emulator->height, 0);
+	// Call audio batch callback
+	emulator->getAudioDevice().renderBatch(audioBatchCallback);
 }

 void retro_set_controller_port_device(uint port, uint device) {}
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@ -3,6 +3,8 @@
 #include <algorithm>
 #include <unordered_map>

+#include "PICA/gpu.hpp"
+
 Renderer::Renderer(GPU& gpu, const std::array<u32, regNum>& internalRegs, const std::array<u32, extRegNum>& externalRegs)
 	: gpu(gpu), regs(internalRegs), externalRegs(externalRegs) {}
 Renderer::~Renderer() {}
@ -39,3 +41,39 @@ const char* Renderer::typeToString(RendererType rendererType) {
 		default: return "Invalid";
 	}
 }
+
+void Renderer::doSoftwareTextureCopy(u32 inputAddr, u32 outputAddr, u32 copySize, u32 inputWidth, u32 inputGap, u32 outputWidth, u32 outputGap) {
+	u8* inputPointer = gpu.getPointerPhys<u8>(inputAddr);
+	u8* outputPointer = gpu.getPointerPhys<u8>(outputAddr);
+
+	if (inputPointer == nullptr || outputPointer == nullptr) {
+		return;
+	}
+
+	u32 inputBytesLeft = inputWidth;
+	u32 outputBytesLeft = outputWidth;
+	u32 copyBytesLeft = copySize;
+
+	while (copyBytesLeft > 0) {
+		const u32 bytes = std::min<u32>({inputBytesLeft, outputBytesLeft, copyBytesLeft});
+		std::memcpy(outputPointer, inputPointer, bytes);
+
+		inputPointer += bytes;
+		outputPointer += bytes;
+
+		inputBytesLeft -= bytes;
+		outputBytesLeft -= bytes;
+		copyBytesLeft -= bytes;
+
+		// Apply input and output gap when an input or output line ends
+		if (inputBytesLeft == 0) {
+			inputBytesLeft = inputWidth;
+			inputPointer += inputGap;
+		}
+
+		if (outputBytesLeft == 0) {
+			outputBytesLeft = outputWidth;
+			outputPointer += outputGap;
+		}
+	}
+}