Merge pull request #7118 from ameerj/vc-gpu-impl

gpu: Migrate implementation to the cpp file

1 files changed, 794 insertions, 421 deletions

diff --git a/src/video_core/gpu.cpp b/src/video_core/gpu.cpp
index 2ae3639b5..ab7c21a49 100644
--- a/src/video_core/gpu.cpp
+++ b/src/video_core/gpu.cpp
@@ -2,540 +2,913 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <array>
+#include <atomic>
 #include <chrono>
+#include <condition_variable>
+#include <list>
+#include <memory>
 
 #include "common/assert.h"
 #include "common/microprofile.h"
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/core_timing.h"
-#include "core/core_timing_util.h"
 #include "core/frontend/emu_window.h"
 #include "core/hardware_interrupt_manager.h"
-#include "core/memory.h"
+#include "core/hle/service/nvdrv/nvdata.h"
+#include "core/hle/service/nvflinger/buffer_queue.h"
 #include "core/perf_stats.h"
+#include "video_core/cdma_pusher.h"
+#include "video_core/dma_pusher.h"
 #include "video_core/engines/fermi_2d.h"
 #include "video_core/engines/kepler_compute.h"
 #include "video_core/engines/kepler_memory.h"
 #include "video_core/engines/maxwell_3d.h"
 #include "video_core/engines/maxwell_dma.h"
 #include "video_core/gpu.h"
+#include "video_core/gpu_thread.h"
 #include "video_core/memory_manager.h"
 #include "video_core/renderer_base.h"
 #include "video_core/shader_notify.h"
-#include "video_core/video_core.h"
 
 namespace Tegra {
 
 MICROPROFILE_DEFINE(GPU_wait, "GPU", "Wait for the GPU", MP_RGB(128, 128, 192));
 
-GPU::GPU(Core::System& system_, bool is_async_, bool use_nvdec_)
-    : system{system_}, memory_manager{std::make_unique<Tegra::MemoryManager>(system)},
-      dma_pusher{std::make_unique<Tegra::DmaPusher>(system, *this)}, use_nvdec{use_nvdec_},
-      maxwell_3d{std::make_unique<Engines::Maxwell3D>(system, *memory_manager)},
-      fermi_2d{std::make_unique<Engines::Fermi2D>()},
-      kepler_compute{std::make_unique<Engines::KeplerCompute>(system, *memory_manager)},
-      maxwell_dma{std::make_unique<Engines::MaxwellDMA>(system, *memory_manager)},
-      kepler_memory{std::make_unique<Engines::KeplerMemory>(system, *memory_manager)},
-      shader_notify{std::make_unique<VideoCore::ShaderNotify>()}, is_async{is_async_},
-      gpu_thread{system_, is_async_} {}
+struct GPU::Impl {
+    explicit Impl(GPU& gpu_, Core::System& system_, bool is_async_, bool use_nvdec_)
+        : gpu{gpu_}, system{system_}, memory_manager{std::make_unique<Tegra::MemoryManager>(
+                                          system)},
+          dma_pusher{std::make_unique<Tegra::DmaPusher>(system, gpu)}, use_nvdec{use_nvdec_},
+          maxwell_3d{std::make_unique<Engines::Maxwell3D>(system, *memory_manager)},
+          fermi_2d{std::make_unique<Engines::Fermi2D>()},
+          kepler_compute{std::make_unique<Engines::KeplerCompute>(system, *memory_manager)},
+          maxwell_dma{std::make_unique<Engines::MaxwellDMA>(system, *memory_manager)},
+          kepler_memory{std::make_unique<Engines::KeplerMemory>(system, *memory_manager)},
+          shader_notify{std::make_unique<VideoCore::ShaderNotify>()}, is_async{is_async_},
+          gpu_thread{system_, is_async_} {}
+
+    ~Impl() = default;
+
+    /// Binds a renderer to the GPU.
+    void BindRenderer(std::unique_ptr<VideoCore::RendererBase> renderer_) {
+        renderer = std::move(renderer_);
+        rasterizer = renderer->ReadRasterizer();
+
+        memory_manager->BindRasterizer(rasterizer);
+        maxwell_3d->BindRasterizer(rasterizer);
+        fermi_2d->BindRasterizer(rasterizer);
+        kepler_compute->BindRasterizer(rasterizer);
+        maxwell_dma->BindRasterizer(rasterizer);
+    }
 
-GPU::~GPU() = default;
+    /// Calls a GPU method.
+    void CallMethod(const GPU::MethodCall& method_call) {
+        LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method_call.method,
+                  method_call.subchannel);
+
+        ASSERT(method_call.subchannel < bound_engines.size());
+
+        if (ExecuteMethodOnEngine(method_call.method)) {
+            CallEngineMethod(method_call);
+        } else {
+            CallPullerMethod(method_call);
+        }
+    }
+
+    /// Calls a GPU multivalue method.
+    void CallMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
+                         u32 methods_pending) {
+        LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method, subchannel);
 
-void GPU::BindRenderer(std::unique_ptr<VideoCore::RendererBase> renderer_) {
-    renderer = std::move(renderer_);
-    rasterizer = renderer->ReadRasterizer();
+        ASSERT(subchannel < bound_engines.size());
+
+        if (ExecuteMethodOnEngine(method)) {
+            CallEngineMultiMethod(method, subchannel, base_start, amount, methods_pending);
+        } else {
+            for (std::size_t i = 0; i < amount; i++) {
+                CallPullerMethod(GPU::MethodCall{
+                    method,
+                    base_start[i],
+                    subchannel,
+                    methods_pending - static_cast<u32>(i),
+                });
+            }
+        }
+    }
+
+    /// Flush all current written commands into the host GPU for execution.
+    void FlushCommands() {
+        rasterizer->FlushCommands();
+    }
+
+    /// Synchronizes CPU writes with Host GPU memory.
+    void SyncGuestHost() {
+        rasterizer->SyncGuestHost();
+    }
+
+    /// Signal the ending of command list.
+    void OnCommandListEnd() {
+        if (is_async) {
+            // This command only applies to asynchronous GPU mode
+            gpu_thread.OnCommandListEnd();
+        }
+    }
+
+    /// Request a host GPU memory flush from the CPU.
+    [[nodiscard]] u64 RequestFlush(VAddr addr, std::size_t size) {
+        std::unique_lock lck{flush_request_mutex};
+        const u64 fence = ++last_flush_fence;
+        flush_requests.emplace_back(fence, addr, size);
+        return fence;
+    }
+
+    /// Obtains current flush request fence id.
+    [[nodiscard]] u64 CurrentFlushRequestFence() const {
+        return current_flush_fence.load(std::memory_order_relaxed);
+    }
+
+    /// Tick pending requests within the GPU.
+    void TickWork() {
+        std::unique_lock lck{flush_request_mutex};
+        while (!flush_requests.empty()) {
+            auto& request = flush_requests.front();
+            const u64 fence = request.fence;
+            const VAddr addr = request.addr;
+            const std::size_t size = request.size;
+            flush_requests.pop_front();
+            flush_request_mutex.unlock();
+            rasterizer->FlushRegion(addr, size);
+            current_flush_fence.store(fence);
+            flush_request_mutex.lock();
+        }
+    }
+
+    /// Returns a reference to the Maxwell3D GPU engine.
+    [[nodiscard]] Engines::Maxwell3D& Maxwell3D() {
+        return *maxwell_3d;
+    }
+
+    /// Returns a const reference to the Maxwell3D GPU engine.
+    [[nodiscard]] const Engines::Maxwell3D& Maxwell3D() const {
+        return *maxwell_3d;
+    }
+
+    /// Returns a reference to the KeplerCompute GPU engine.
+    [[nodiscard]] Engines::KeplerCompute& KeplerCompute() {
+        return *kepler_compute;
+    }
+
+    /// Returns a reference to the KeplerCompute GPU engine.
+    [[nodiscard]] const Engines::KeplerCompute& KeplerCompute() const {
+        return *kepler_compute;
+    }
+
+    /// Returns a reference to the GPU memory manager.
+    [[nodiscard]] Tegra::MemoryManager& MemoryManager() {
+        return *memory_manager;
+    }
+
+    /// Returns a const reference to the GPU memory manager.
+    [[nodiscard]] const Tegra::MemoryManager& MemoryManager() const {
+        return *memory_manager;
+    }
+
+    /// Returns a reference to the GPU DMA pusher.
+    [[nodiscard]] Tegra::DmaPusher& DmaPusher() {
+        return *dma_pusher;
+    }
+
+    /// Returns a const reference to the GPU DMA pusher.
+    [[nodiscard]] const Tegra::DmaPusher& DmaPusher() const {
+        return *dma_pusher;
+    }
+
+    /// Returns a reference to the GPU CDMA pusher.
+    [[nodiscard]] Tegra::CDmaPusher& CDmaPusher() {
+        return *cdma_pusher;
+    }
+
+    /// Returns a const reference to the GPU CDMA pusher.
+    [[nodiscard]] const Tegra::CDmaPusher& CDmaPusher() const {
+        return *cdma_pusher;
+    }
+
+    /// Returns a reference to the underlying renderer.
+    [[nodiscard]] VideoCore::RendererBase& Renderer() {
+        return *renderer;
+    }
+
+    /// Returns a const reference to the underlying renderer.
+    [[nodiscard]] const VideoCore::RendererBase& Renderer() const {
+        return *renderer;
+    }
+
+    /// Returns a reference to the shader notifier.
+    [[nodiscard]] VideoCore::ShaderNotify& ShaderNotify() {
+        return *shader_notify;
+    }
+
+    /// Returns a const reference to the shader notifier.
+    [[nodiscard]] const VideoCore::ShaderNotify& ShaderNotify() const {
+        return *shader_notify;
+    }
+
+    /// Allows the CPU/NvFlinger to wait on the GPU before presenting a frame.
+    void WaitFence(u32 syncpoint_id, u32 value) {
+        // Synced GPU, is always in sync
+        if (!is_async) {
+            return;
+        }
+        if (syncpoint_id == UINT32_MAX) {
+            // TODO: Research what this does.
+            LOG_ERROR(HW_GPU, "Waiting for syncpoint -1 not implemented");
+            return;
+        }
+        MICROPROFILE_SCOPE(GPU_wait);
+        std::unique_lock lock{sync_mutex};
+        sync_cv.wait(lock, [=, this] {
+            if (shutting_down.load(std::memory_order_relaxed)) {
+                // We're shutting down, ensure no threads continue to wait for the next syncpoint
+                return true;
+            }
+            return syncpoints.at(syncpoint_id).load() >= value;
+        });
+    }
+
+    void IncrementSyncPoint(u32 syncpoint_id) {
+        auto& syncpoint = syncpoints.at(syncpoint_id);
+        syncpoint++;
+        std::lock_guard lock{sync_mutex};
+        sync_cv.notify_all();
+        auto& interrupt = syncpt_interrupts.at(syncpoint_id);
+        if (!interrupt.empty()) {
+            u32 value = syncpoint.load();
+            auto it = interrupt.begin();
+            while (it != interrupt.end()) {
+                if (value >= *it) {
+                    TriggerCpuInterrupt(syncpoint_id, *it);
+                    it = interrupt.erase(it);
+                    continue;
+                }
+                it++;
+            }
+        }
+    }
+
+    [[nodiscard]] u32 GetSyncpointValue(u32 syncpoint_id) const {
+        return syncpoints.at(syncpoint_id).load();
+    }
+
+    void RegisterSyncptInterrupt(u32 syncpoint_id, u32 value) {
+        std::lock_guard lock{sync_mutex};
+        auto& interrupt = syncpt_interrupts.at(syncpoint_id);
+        bool contains = std::any_of(interrupt.begin(), interrupt.end(),
+                                    [value](u32 in_value) { return in_value == value; });
+        if (contains) {
+            return;
+        }
+        interrupt.emplace_back(value);
+    }
+
+    [[nodiscard]] bool CancelSyncptInterrupt(u32 syncpoint_id, u32 value) {
+        std::lock_guard lock{sync_mutex};
+        auto& interrupt = syncpt_interrupts.at(syncpoint_id);
+        const auto iter =
+            std::find_if(interrupt.begin(), interrupt.end(),
+                         [value](u32 interrupt_value) { return value == interrupt_value; });
+
+        if (iter == interrupt.end()) {
+            return false;
+        }
+        interrupt.erase(iter);
+        return true;
+    }
+
+    [[nodiscard]] u64 GetTicks() const {
+        // This values were reversed engineered by fincs from NVN
+        // The gpu clock is reported in units of 385/625 nanoseconds
+        constexpr u64 gpu_ticks_num = 384;
+        constexpr u64 gpu_ticks_den = 625;
+
+        u64 nanoseconds = system.CoreTiming().GetGlobalTimeNs().count();
+        if (Settings::values.use_fast_gpu_time.GetValue()) {
+            nanoseconds /= 256;
+        }
+        const u64 nanoseconds_num = nanoseconds / gpu_ticks_den;
+        const u64 nanoseconds_rem = nanoseconds % gpu_ticks_den;
+        return nanoseconds_num * gpu_ticks_num + (nanoseconds_rem * gpu_ticks_num) / gpu_ticks_den;
+    }
+
+    [[nodiscard]] bool IsAsync() const {
+        return is_async;
+    }
+
+    [[nodiscard]] bool UseNvdec() const {
+        return use_nvdec;
+    }
+
+    void RendererFrameEndNotify() {
+        system.GetPerfStats().EndGameFrame();
+    }
+
+    /// Performs any additional setup necessary in order to begin GPU emulation.
+    /// This can be used to launch any necessary threads and register any necessary
+    /// core timing events.
+    void Start() {
+        gpu_thread.StartThread(*renderer, renderer->Context(), *dma_pusher);
+        cpu_context = renderer->GetRenderWindow().CreateSharedContext();
+        cpu_context->MakeCurrent();
+    }
+
+    /// Obtain the CPU Context
+    void ObtainContext() {
+        cpu_context->MakeCurrent();
+    }
+
+    /// Release the CPU Context
+    void ReleaseContext() {
+        cpu_context->DoneCurrent();
+    }
+
+    /// Push GPU command entries to be processed
+    void PushGPUEntries(Tegra::CommandList&& entries) {
+        gpu_thread.SubmitList(std::move(entries));
+    }
+
+    /// Push GPU command buffer entries to be processed
+    void PushCommandBuffer(Tegra::ChCommandHeaderList& entries) {
+        if (!use_nvdec) {
+            return;
+        }
+
+        if (!cdma_pusher) {
+            cdma_pusher = std::make_unique<Tegra::CDmaPusher>(gpu);
+        }
+
+        // SubmitCommandBuffer would make the nvdec operations async, this is not currently working
+        // TODO(ameerj): RE proper async nvdec operation
+        // gpu_thread.SubmitCommandBuffer(std::move(entries));
+
+        cdma_pusher->ProcessEntries(std::move(entries));
+    }
+
+    /// Frees the CDMAPusher instance to free up resources
+    void ClearCdmaInstance() {
+        cdma_pusher.reset();
+    }
+
+    /// Swap buffers (render frame)
+    void SwapBuffers(const Tegra::FramebufferConfig* framebuffer) {
+        gpu_thread.SwapBuffers(framebuffer);
+    }
+
+    /// Notify rasterizer that any caches of the specified region should be flushed to Switch memory
+    void FlushRegion(VAddr addr, u64 size) {
+        gpu_thread.FlushRegion(addr, size);
+    }
+
+    /// Notify rasterizer that any caches of the specified region should be invalidated
+    void InvalidateRegion(VAddr addr, u64 size) {
+        gpu_thread.InvalidateRegion(addr, size);
+    }
+
+    /// Notify rasterizer that any caches of the specified region should be flushed and invalidated
+    void FlushAndInvalidateRegion(VAddr addr, u64 size) {
+        gpu_thread.FlushAndInvalidateRegion(addr, size);
+    }
+
+    void TriggerCpuInterrupt(u32 syncpoint_id, u32 value) const {
+        auto& interrupt_manager = system.InterruptManager();
+        interrupt_manager.GPUInterruptSyncpt(syncpoint_id, value);
+    }
+
+    void ProcessBindMethod(const GPU::MethodCall& method_call) {
+        // Bind the current subchannel to the desired engine id.
+        LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", method_call.subchannel,
+                  method_call.argument);
+        const auto engine_id = static_cast<EngineID>(method_call.argument);
+        bound_engines[method_call.subchannel] = static_cast<EngineID>(engine_id);
+        switch (engine_id) {
+        case EngineID::FERMI_TWOD_A:
+            dma_pusher->BindSubchannel(fermi_2d.get(), method_call.subchannel);
+            break;
+        case EngineID::MAXWELL_B:
+            dma_pusher->BindSubchannel(maxwell_3d.get(), method_call.subchannel);
+            break;
+        case EngineID::KEPLER_COMPUTE_B:
+            dma_pusher->BindSubchannel(kepler_compute.get(), method_call.subchannel);
+            break;
+        case EngineID::MAXWELL_DMA_COPY_A:
+            dma_pusher->BindSubchannel(maxwell_dma.get(), method_call.subchannel);
+            break;
+        case EngineID::KEPLER_INLINE_TO_MEMORY_B:
+            dma_pusher->BindSubchannel(kepler_memory.get(), method_call.subchannel);
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unimplemented engine {:04X}", engine_id);
+        }
+    }
 
-    memory_manager->BindRasterizer(rasterizer);
-    maxwell_3d->BindRasterizer(rasterizer);
-    fermi_2d->BindRasterizer(rasterizer);
-    kepler_compute->BindRasterizer(rasterizer);
-    maxwell_dma->BindRasterizer(rasterizer);
+    void ProcessFenceActionMethod() {
+        switch (regs.fence_action.op) {
+        case GPU::FenceOperation::Acquire:
+            WaitFence(regs.fence_action.syncpoint_id, regs.fence_value);
+            break;
+        case GPU::FenceOperation::Increment:
+            IncrementSyncPoint(regs.fence_action.syncpoint_id);
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unimplemented operation {}", regs.fence_action.op.Value());
+        }
+    }
+
+    void ProcessWaitForInterruptMethod() {
+        // TODO(bunnei) ImplementMe
+        LOG_WARNING(HW_GPU, "(STUBBED) called");
+    }
+
+    void ProcessSemaphoreTriggerMethod() {
+        const auto semaphoreOperationMask = 0xF;
+        const auto op =
+            static_cast<GpuSemaphoreOperation>(regs.semaphore_trigger & semaphoreOperationMask);
+        if (op == GpuSemaphoreOperation::WriteLong) {
+            struct Block {
+                u32 sequence;
+                u32 zeros = 0;
+                u64 timestamp;
+            };
+
+            Block block{};
+            block.sequence = regs.semaphore_sequence;
+            // TODO(Kmather73): Generate a real GPU timestamp and write it here instead of
+            // CoreTiming
+            block.timestamp = GetTicks();
+            memory_manager->WriteBlock(regs.semaphore_address.SemaphoreAddress(), &block,
+                                       sizeof(block));
+        } else {
+            const u32 word{memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress())};
+            if ((op == GpuSemaphoreOperation::AcquireEqual && word == regs.semaphore_sequence) ||
+                (op == GpuSemaphoreOperation::AcquireGequal &&
+                 static_cast<s32>(word - regs.semaphore_sequence) > 0) ||
+                (op == GpuSemaphoreOperation::AcquireMask && (word & regs.semaphore_sequence))) {
+                // Nothing to do in this case
+            } else {
+                regs.acquire_source = true;
+                regs.acquire_value = regs.semaphore_sequence;
+                if (op == GpuSemaphoreOperation::AcquireEqual) {
+                    regs.acquire_active = true;
+                    regs.acquire_mode = false;
+                } else if (op == GpuSemaphoreOperation::AcquireGequal) {
+                    regs.acquire_active = true;
+                    regs.acquire_mode = true;
+                } else if (op == GpuSemaphoreOperation::AcquireMask) {
+                    // TODO(kemathe) The acquire mask operation waits for a value that, ANDed with
+                    // semaphore_sequence, gives a non-0 result
+                    LOG_ERROR(HW_GPU, "Invalid semaphore operation AcquireMask not implemented");
+                } else {
+                    LOG_ERROR(HW_GPU, "Invalid semaphore operation");
+                }
+            }
+        }
+    }
+
+    void ProcessSemaphoreRelease() {
+        memory_manager->Write<u32>(regs.semaphore_address.SemaphoreAddress(),
+                                   regs.semaphore_release);
+    }
+
+    void ProcessSemaphoreAcquire() {
+        const u32 word = memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress());
+        const auto value = regs.semaphore_acquire;
+        if (word != value) {
+            regs.acquire_active = true;
+            regs.acquire_value = value;
+            // TODO(kemathe73) figure out how to do the acquire_timeout
+            regs.acquire_mode = false;
+            regs.acquire_source = false;
+        }
+    }
+
+    /// Calls a GPU puller method.
+    void CallPullerMethod(const GPU::MethodCall& method_call) {
+        regs.reg_array[method_call.method] = method_call.argument;
+        const auto method = static_cast<BufferMethods>(method_call.method);
+
+        switch (method) {
+        case BufferMethods::BindObject: {
+            ProcessBindMethod(method_call);
+            break;
+        }
+        case BufferMethods::Nop:
+        case BufferMethods::SemaphoreAddressHigh:
+        case BufferMethods::SemaphoreAddressLow:
+        case BufferMethods::SemaphoreSequence:
+        case BufferMethods::UnkCacheFlush:
+        case BufferMethods::WrcacheFlush:
+        case BufferMethods::FenceValue:
+            break;
+        case BufferMethods::RefCnt:
+            rasterizer->SignalReference();
+            break;
+        case BufferMethods::FenceAction:
+            ProcessFenceActionMethod();
+            break;
+        case BufferMethods::WaitForInterrupt:
+            ProcessWaitForInterruptMethod();
+            break;
+        case BufferMethods::SemaphoreTrigger: {
+            ProcessSemaphoreTriggerMethod();
+            break;
+        }
+        case BufferMethods::NotifyIntr: {
+            // TODO(Kmather73): Research and implement this method.
+            LOG_ERROR(HW_GPU, "Special puller engine method NotifyIntr not implemented");
+            break;
+        }
+        case BufferMethods::Unk28: {
+            // TODO(Kmather73): Research and implement this method.
+            LOG_ERROR(HW_GPU, "Special puller engine method Unk28 not implemented");
+            break;
+        }
+        case BufferMethods::SemaphoreAcquire: {
+            ProcessSemaphoreAcquire();
+            break;
+        }
+        case BufferMethods::SemaphoreRelease: {
+            ProcessSemaphoreRelease();
+            break;
+        }
+        case BufferMethods::Yield: {
+            // TODO(Kmather73): Research and implement this method.
+            LOG_ERROR(HW_GPU, "Special puller engine method Yield not implemented");
+            break;
+        }
+        default:
+            LOG_ERROR(HW_GPU, "Special puller engine method {:X} not implemented", method);
+            break;
+        }
+    }
+
+    /// Calls a GPU engine method.
+    void CallEngineMethod(const GPU::MethodCall& method_call) {
+        const EngineID engine = bound_engines[method_call.subchannel];
+
+        switch (engine) {
+        case EngineID::FERMI_TWOD_A:
+            fermi_2d->CallMethod(method_call.method, method_call.argument,
+                                 method_call.IsLastCall());
+            break;
+        case EngineID::MAXWELL_B:
+            maxwell_3d->CallMethod(method_call.method, method_call.argument,
+                                   method_call.IsLastCall());
+            break;
+        case EngineID::KEPLER_COMPUTE_B:
+            kepler_compute->CallMethod(method_call.method, method_call.argument,
+                                       method_call.IsLastCall());
+            break;
+        case EngineID::MAXWELL_DMA_COPY_A:
+            maxwell_dma->CallMethod(method_call.method, method_call.argument,
+                                    method_call.IsLastCall());
+            break;
+        case EngineID::KEPLER_INLINE_TO_MEMORY_B:
+            kepler_memory->CallMethod(method_call.method, method_call.argument,
+                                      method_call.IsLastCall());
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unimplemented engine");
+        }
+    }
+
+    /// Calls a GPU engine multivalue method.
+    void CallEngineMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
+                               u32 methods_pending) {
+        const EngineID engine = bound_engines[subchannel];
+
+        switch (engine) {
+        case EngineID::FERMI_TWOD_A:
+            fermi_2d->CallMultiMethod(method, base_start, amount, methods_pending);
+            break;
+        case EngineID::MAXWELL_B:
+            maxwell_3d->CallMultiMethod(method, base_start, amount, methods_pending);
+            break;
+        case EngineID::KEPLER_COMPUTE_B:
+            kepler_compute->CallMultiMethod(method, base_start, amount, methods_pending);
+            break;
+        case EngineID::MAXWELL_DMA_COPY_A:
+            maxwell_dma->CallMultiMethod(method, base_start, amount, methods_pending);
+            break;
+        case EngineID::KEPLER_INLINE_TO_MEMORY_B:
+            kepler_memory->CallMultiMethod(method, base_start, amount, methods_pending);
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unimplemented engine");
+        }
+    }
+
+    /// Determines where the method should be executed.
+    [[nodiscard]] bool ExecuteMethodOnEngine(u32 method) {
+        const auto buffer_method = static_cast<BufferMethods>(method);
+        return buffer_method >= BufferMethods::NonPullerMethods;
+    }
+
+    struct Regs {
+        static constexpr size_t NUM_REGS = 0x40;
+
+        union {
+            struct {
+                INSERT_PADDING_WORDS_NOINIT(0x4);
+                struct {
+                    u32 address_high;
+                    u32 address_low;
+
+                    [[nodiscard]] GPUVAddr SemaphoreAddress() const {
+                        return static_cast<GPUVAddr>((static_cast<GPUVAddr>(address_high) << 32) |
+                                                     address_low);
+                    }
+                } semaphore_address;
+
+                u32 semaphore_sequence;
+                u32 semaphore_trigger;
+                INSERT_PADDING_WORDS_NOINIT(0xC);
+
+                // The pusher and the puller share the reference counter, the pusher only has read
+                // access
+                u32 reference_count;
+                INSERT_PADDING_WORDS_NOINIT(0x5);
+
+                u32 semaphore_acquire;
+                u32 semaphore_release;
+                u32 fence_value;
+                GPU::FenceAction fence_action;
+                INSERT_PADDING_WORDS_NOINIT(0xE2);
+
+                // Puller state
+                u32 acquire_mode;
+                u32 acquire_source;
+                u32 acquire_active;
+                u32 acquire_timeout;
+                u32 acquire_value;
+            };
+            std::array<u32, NUM_REGS> reg_array;
+        };
+    } regs{};
+
+    GPU& gpu;
+    Core::System& system;
+    std::unique_ptr<Tegra::MemoryManager> memory_manager;
+    std::unique_ptr<Tegra::DmaPusher> dma_pusher;
+    std::unique_ptr<Tegra::CDmaPusher> cdma_pusher;
+    std::unique_ptr<VideoCore::RendererBase> renderer;
+    VideoCore::RasterizerInterface* rasterizer = nullptr;
+    const bool use_nvdec;
+
+    /// Mapping of command subchannels to their bound engine ids
+    std::array<EngineID, 8> bound_engines{};
+    /// 3D engine
+    std::unique_ptr<Engines::Maxwell3D> maxwell_3d;
+    /// 2D engine
+    std::unique_ptr<Engines::Fermi2D> fermi_2d;
+    /// Compute engine
+    std::unique_ptr<Engines::KeplerCompute> kepler_compute;
+    /// DMA engine
+    std::unique_ptr<Engines::MaxwellDMA> maxwell_dma;
+    /// Inline memory engine
+    std::unique_ptr<Engines::KeplerMemory> kepler_memory;
+    /// Shader build notifier
+    std::unique_ptr<VideoCore::ShaderNotify> shader_notify;
+    /// When true, we are about to shut down emulation session, so terminate outstanding tasks
+    std::atomic_bool shutting_down{};
+
+    std::array<std::atomic<u32>, Service::Nvidia::MaxSyncPoints> syncpoints{};
+
+    std::array<std::list<u32>, Service::Nvidia::MaxSyncPoints> syncpt_interrupts;
+
+    std::mutex sync_mutex;
+    std::mutex device_mutex;
+
+    std::condition_variable sync_cv;
+
+    struct FlushRequest {
+        explicit FlushRequest(u64 fence_, VAddr addr_, std::size_t size_)
+            : fence{fence_}, addr{addr_}, size{size_} {}
+        u64 fence;
+        VAddr addr;
+        std::size_t size;
+    };
+
+    std::list<FlushRequest> flush_requests;
+    std::atomic<u64> current_flush_fence{};
+    u64 last_flush_fence{};
+    std::mutex flush_request_mutex;
+
+    const bool is_async;
+
+    VideoCommon::GPUThread::ThreadManager gpu_thread;
+    std::unique_ptr<Core::Frontend::GraphicsContext> cpu_context;
+
+#define ASSERT_REG_POSITION(field_name, position)                                                  \
+    static_assert(offsetof(Regs, field_name) == position * 4,                                      \
+                  "Field " #field_name " has invalid position")
+
+    ASSERT_REG_POSITION(semaphore_address, 0x4);
+    ASSERT_REG_POSITION(semaphore_sequence, 0x6);
+    ASSERT_REG_POSITION(semaphore_trigger, 0x7);
+    ASSERT_REG_POSITION(reference_count, 0x14);
+    ASSERT_REG_POSITION(semaphore_acquire, 0x1A);
+    ASSERT_REG_POSITION(semaphore_release, 0x1B);
+    ASSERT_REG_POSITION(fence_value, 0x1C);
+    ASSERT_REG_POSITION(fence_action, 0x1D);
+
+    ASSERT_REG_POSITION(acquire_mode, 0x100);
+    ASSERT_REG_POSITION(acquire_source, 0x101);
+    ASSERT_REG_POSITION(acquire_active, 0x102);
+    ASSERT_REG_POSITION(acquire_timeout, 0x103);
+    ASSERT_REG_POSITION(acquire_value, 0x104);
+
+#undef ASSERT_REG_POSITION
+
+    enum class GpuSemaphoreOperation {
+        AcquireEqual = 0x1,
+        WriteLong = 0x2,
+        AcquireGequal = 0x4,
+        AcquireMask = 0x8,
+    };
+};
+
+GPU::GPU(Core::System& system, bool is_async, bool use_nvdec)
+    : impl{std::make_unique<Impl>(*this, system, is_async, use_nvdec)} {}
+
+GPU::~GPU() = default;
+
+void GPU::BindRenderer(std::unique_ptr<VideoCore::RendererBase> renderer) {
+    impl->BindRenderer(std::move(renderer));
 }
 
-Engines::Maxwell3D& GPU::Maxwell3D() {
-    return *maxwell_3d;
+void GPU::CallMethod(const MethodCall& method_call) {
+    impl->CallMethod(method_call);
 }
 
-const Engines::Maxwell3D& GPU::Maxwell3D() const {
-    return *maxwell_3d;
+void GPU::CallMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
+                          u32 methods_pending) {
+    impl->CallMultiMethod(method, subchannel, base_start, amount, methods_pending);
 }
 
-Engines::KeplerCompute& GPU::KeplerCompute() {
-    return *kepler_compute;
+void GPU::FlushCommands() {
+    impl->FlushCommands();
 }
 
-const Engines::KeplerCompute& GPU::KeplerCompute() const {
-    return *kepler_compute;
+void GPU::SyncGuestHost() {
+    impl->SyncGuestHost();
 }
 
-MemoryManager& GPU::MemoryManager() {
-    return *memory_manager;
+void GPU::OnCommandListEnd() {
+    impl->OnCommandListEnd();
 }
 
-const MemoryManager& GPU::MemoryManager() const {
-    return *memory_manager;
+u64 GPU::RequestFlush(VAddr addr, std::size_t size) {
+    return impl->RequestFlush(addr, size);
 }
 
-DmaPusher& GPU::DmaPusher() {
-    return *dma_pusher;
+u64 GPU::CurrentFlushRequestFence() const {
+    return impl->CurrentFlushRequestFence();
 }
 
-Tegra::CDmaPusher& GPU::CDmaPusher() {
-    return *cdma_pusher;
+void GPU::TickWork() {
+    impl->TickWork();
 }
 
-const DmaPusher& GPU::DmaPusher() const {
-    return *dma_pusher;
+Engines::Maxwell3D& GPU::Maxwell3D() {
+    return impl->Maxwell3D();
 }
 
-const Tegra::CDmaPusher& GPU::CDmaPusher() const {
-    return *cdma_pusher;
+const Engines::Maxwell3D& GPU::Maxwell3D() const {
+    return impl->Maxwell3D();
 }
 
-void GPU::WaitFence(u32 syncpoint_id, u32 value) {
-    // Synced GPU, is always in sync
-    if (!is_async) {
-        return;
-    }
-    if (syncpoint_id == UINT32_MAX) {
-        // TODO: Research what this does.
-        LOG_ERROR(HW_GPU, "Waiting for syncpoint -1 not implemented");
-        return;
-    }
-    MICROPROFILE_SCOPE(GPU_wait);
-    std::unique_lock lock{sync_mutex};
-    sync_cv.wait(lock, [=, this] {
-        if (shutting_down.load(std::memory_order_relaxed)) {
-            // We're shutting down, ensure no threads continue to wait for the next syncpoint
-            return true;
-        }
-        return syncpoints.at(syncpoint_id).load() >= value;
-    });
-}
-
-void GPU::IncrementSyncPoint(const u32 syncpoint_id) {
-    auto& syncpoint = syncpoints.at(syncpoint_id);
-    syncpoint++;
-    std::lock_guard lock{sync_mutex};
-    sync_cv.notify_all();
-    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
-    if (!interrupt.empty()) {
-        u32 value = syncpoint.load();
-        auto it = interrupt.begin();
-        while (it != interrupt.end()) {
-            if (value >= *it) {
-                TriggerCpuInterrupt(syncpoint_id, *it);
-                it = interrupt.erase(it);
-                continue;
-            }
-            it++;
-        }
-    }
+Engines::KeplerCompute& GPU::KeplerCompute() {
+    return impl->KeplerCompute();
 }
 
-u32 GPU::GetSyncpointValue(const u32 syncpoint_id) const {
-    return syncpoints.at(syncpoint_id).load();
+const Engines::KeplerCompute& GPU::KeplerCompute() const {
+    return impl->KeplerCompute();
 }
 
-void GPU::RegisterSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
-    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
-    bool contains = std::any_of(interrupt.begin(), interrupt.end(),
-                                [value](u32 in_value) { return in_value == value; });
-    if (contains) {
-        return;
-    }
-    interrupt.emplace_back(value);
+Tegra::MemoryManager& GPU::MemoryManager() {
+    return impl->MemoryManager();
 }
 
-bool GPU::CancelSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
-    std::lock_guard lock{sync_mutex};
-    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
-    const auto iter =
-        std::find_if(interrupt.begin(), interrupt.end(),
-                     [value](u32 interrupt_value) { return value == interrupt_value; });
+const Tegra::MemoryManager& GPU::MemoryManager() const {
+    return impl->MemoryManager();
+}
 
-    if (iter == interrupt.end()) {
-        return false;
-    }
-    interrupt.erase(iter);
-    return true;
+Tegra::DmaPusher& GPU::DmaPusher() {
+    return impl->DmaPusher();
 }
 
-u64 GPU::RequestFlush(VAddr addr, std::size_t size) {
-    std::unique_lock lck{flush_request_mutex};
-    const u64 fence = ++last_flush_fence;
-    flush_requests.emplace_back(fence, addr, size);
-    return fence;
+const Tegra::DmaPusher& GPU::DmaPusher() const {
+    return impl->DmaPusher();
 }
 
-void GPU::TickWork() {
-    std::unique_lock lck{flush_request_mutex};
-    while (!flush_requests.empty()) {
-        auto& request = flush_requests.front();
-        const u64 fence = request.fence;
-        const VAddr addr = request.addr;
-        const std::size_t size = request.size;
-        flush_requests.pop_front();
-        flush_request_mutex.unlock();
-        rasterizer->FlushRegion(addr, size);
-        current_flush_fence.store(fence);
-        flush_request_mutex.lock();
-    }
+Tegra::CDmaPusher& GPU::CDmaPusher() {
+    return impl->CDmaPusher();
 }
 
-u64 GPU::GetTicks() const {
-    // This values were reversed engineered by fincs from NVN
-    // The gpu clock is reported in units of 385/625 nanoseconds
-    constexpr u64 gpu_ticks_num = 384;
-    constexpr u64 gpu_ticks_den = 625;
+const Tegra::CDmaPusher& GPU::CDmaPusher() const {
+    return impl->CDmaPusher();
+}
 
-    u64 nanoseconds = system.CoreTiming().GetGlobalTimeNs().count();
-    if (Settings::values.use_fast_gpu_time.GetValue()) {
-        nanoseconds /= 256;
-    }
-    const u64 nanoseconds_num = nanoseconds / gpu_ticks_den;
-    const u64 nanoseconds_rem = nanoseconds % gpu_ticks_den;
-    return nanoseconds_num * gpu_ticks_num + (nanoseconds_rem * gpu_ticks_num) / gpu_ticks_den;
+VideoCore::RendererBase& GPU::Renderer() {
+    return impl->Renderer();
 }
 
-void GPU::RendererFrameEndNotify() {
-    system.GetPerfStats().EndGameFrame();
+const VideoCore::RendererBase& GPU::Renderer() const {
+    return impl->Renderer();
 }
 
-void GPU::FlushCommands() {
-    rasterizer->FlushCommands();
+VideoCore::ShaderNotify& GPU::ShaderNotify() {
+    return impl->ShaderNotify();
 }
 
-void GPU::SyncGuestHost() {
-    rasterizer->SyncGuestHost();
+const VideoCore::ShaderNotify& GPU::ShaderNotify() const {
+    return impl->ShaderNotify();
 }
 
-enum class GpuSemaphoreOperation {
-    AcquireEqual = 0x1,
-    WriteLong = 0x2,
-    AcquireGequal = 0x4,
-    AcquireMask = 0x8,
-};
+void GPU::WaitFence(u32 syncpoint_id, u32 value) {
+    impl->WaitFence(syncpoint_id, value);
+}
 
-void GPU::CallMethod(const MethodCall& method_call) {
-    LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method_call.method,
-              method_call.subchannel);
+void GPU::IncrementSyncPoint(u32 syncpoint_id) {
+    impl->IncrementSyncPoint(syncpoint_id);
+}
 
-    ASSERT(method_call.subchannel < bound_engines.size());
+u32 GPU::GetSyncpointValue(u32 syncpoint_id) const {
+    return impl->GetSyncpointValue(syncpoint_id);
+}
 
-    if (ExecuteMethodOnEngine(method_call.method)) {
-        CallEngineMethod(method_call);
-    } else {
-        CallPullerMethod(method_call);
-    }
+void GPU::RegisterSyncptInterrupt(u32 syncpoint_id, u32 value) {
+    impl->RegisterSyncptInterrupt(syncpoint_id, value);
 }
 
-void GPU::CallMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
-                          u32 methods_pending) {
-    LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method, subchannel);
-
-    ASSERT(subchannel < bound_engines.size());
-
-    if (ExecuteMethodOnEngine(method)) {
-        CallEngineMultiMethod(method, subchannel, base_start, amount, methods_pending);
-    } else {
-        for (std::size_t i = 0; i < amount; i++) {
-            CallPullerMethod(MethodCall{
-                method,
-                base_start[i],
-                subchannel,
-                methods_pending - static_cast<u32>(i),
-            });
-        }
-    }
+bool GPU::CancelSyncptInterrupt(u32 syncpoint_id, u32 value) {
+    return impl->CancelSyncptInterrupt(syncpoint_id, value);
 }
 
-bool GPU::ExecuteMethodOnEngine(u32 method) {
-    const auto buffer_method = static_cast<BufferMethods>(method);
-    return buffer_method >= BufferMethods::NonPullerMethods;
-}
-
-void GPU::CallPullerMethod(const MethodCall& method_call) {
-    regs.reg_array[method_call.method] = method_call.argument;
-    const auto method = static_cast<BufferMethods>(method_call.method);
-
-    switch (method) {
-    case BufferMethods::BindObject: {
-        ProcessBindMethod(method_call);
-        break;
-    }
-    case BufferMethods::Nop:
-    case BufferMethods::SemaphoreAddressHigh:
-    case BufferMethods::SemaphoreAddressLow:
-    case BufferMethods::SemaphoreSequence:
-    case BufferMethods::UnkCacheFlush:
-    case BufferMethods::WrcacheFlush:
-    case BufferMethods::FenceValue:
-        break;
-    case BufferMethods::RefCnt:
-        rasterizer->SignalReference();
-        break;
-    case BufferMethods::FenceAction:
-        ProcessFenceActionMethod();
-        break;
-    case BufferMethods::WaitForInterrupt:
-        ProcessWaitForInterruptMethod();
-        break;
-    case BufferMethods::SemaphoreTrigger: {
-        ProcessSemaphoreTriggerMethod();
-        break;
-    }
-    case BufferMethods::NotifyIntr: {
-        // TODO(Kmather73): Research and implement this method.
-        LOG_ERROR(HW_GPU, "Special puller engine method NotifyIntr not implemented");
-        break;
-    }
-    case BufferMethods::Unk28: {
-        // TODO(Kmather73): Research and implement this method.
-        LOG_ERROR(HW_GPU, "Special puller engine method Unk28 not implemented");
-        break;
-    }
-    case BufferMethods::SemaphoreAcquire: {
-        ProcessSemaphoreAcquire();
-        break;
-    }
-    case BufferMethods::SemaphoreRelease: {
-        ProcessSemaphoreRelease();
-        break;
-    }
-    case BufferMethods::Yield: {
-        // TODO(Kmather73): Research and implement this method.
-        LOG_ERROR(HW_GPU, "Special puller engine method Yield not implemented");
-        break;
-    }
-    default:
-        LOG_ERROR(HW_GPU, "Special puller engine method {:X} not implemented", method);
-        break;
-    }
-}
-
-void GPU::CallEngineMethod(const MethodCall& method_call) {
-    const EngineID engine = bound_engines[method_call.subchannel];
-
-    switch (engine) {
-    case EngineID::FERMI_TWOD_A:
-        fermi_2d->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
-        break;
-    case EngineID::MAXWELL_B:
-        maxwell_3d->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
-        break;
-    case EngineID::KEPLER_COMPUTE_B:
-        kepler_compute->CallMethod(method_call.method, method_call.argument,
-                                   method_call.IsLastCall());
-        break;
-    case EngineID::MAXWELL_DMA_COPY_A:
-        maxwell_dma->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
-        break;
-    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
-        kepler_memory->CallMethod(method_call.method, method_call.argument,
-                                  method_call.IsLastCall());
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Unimplemented engine");
-    }
-}
-
-void GPU::CallEngineMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
-                                u32 methods_pending) {
-    const EngineID engine = bound_engines[subchannel];
-
-    switch (engine) {
-    case EngineID::FERMI_TWOD_A:
-        fermi_2d->CallMultiMethod(method, base_start, amount, methods_pending);
-        break;
-    case EngineID::MAXWELL_B:
-        maxwell_3d->CallMultiMethod(method, base_start, amount, methods_pending);
-        break;
-    case EngineID::KEPLER_COMPUTE_B:
-        kepler_compute->CallMultiMethod(method, base_start, amount, methods_pending);
-        break;
-    case EngineID::MAXWELL_DMA_COPY_A:
-        maxwell_dma->CallMultiMethod(method, base_start, amount, methods_pending);
-        break;
-    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
-        kepler_memory->CallMultiMethod(method, base_start, amount, methods_pending);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Unimplemented engine");
-    }
-}
-
-void GPU::ProcessBindMethod(const MethodCall& method_call) {
-    // Bind the current subchannel to the desired engine id.
-    LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", method_call.subchannel,
-              method_call.argument);
-    const auto engine_id = static_cast<EngineID>(method_call.argument);
-    bound_engines[method_call.subchannel] = static_cast<EngineID>(engine_id);
-    switch (engine_id) {
-    case EngineID::FERMI_TWOD_A:
-        dma_pusher->BindSubchannel(fermi_2d.get(), method_call.subchannel);
-        break;
-    case EngineID::MAXWELL_B:
-        dma_pusher->BindSubchannel(maxwell_3d.get(), method_call.subchannel);
-        break;
-    case EngineID::KEPLER_COMPUTE_B:
-        dma_pusher->BindSubchannel(kepler_compute.get(), method_call.subchannel);
-        break;
-    case EngineID::MAXWELL_DMA_COPY_A:
-        dma_pusher->BindSubchannel(maxwell_dma.get(), method_call.subchannel);
-        break;
-    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
-        dma_pusher->BindSubchannel(kepler_memory.get(), method_call.subchannel);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Unimplemented engine {:04X}", engine_id);
-    }
-}
-
-void GPU::ProcessFenceActionMethod() {
-    switch (regs.fence_action.op) {
-    case FenceOperation::Acquire:
-        WaitFence(regs.fence_action.syncpoint_id, regs.fence_value);
-        break;
-    case FenceOperation::Increment:
-        IncrementSyncPoint(regs.fence_action.syncpoint_id);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Unimplemented operation {}", regs.fence_action.op.Value());
-    }
-}
-
-void GPU::ProcessWaitForInterruptMethod() {
-    // TODO(bunnei) ImplementMe
-    LOG_WARNING(HW_GPU, "(STUBBED) called");
-}
-
-void GPU::ProcessSemaphoreTriggerMethod() {
-    const auto semaphoreOperationMask = 0xF;
-    const auto op =
-        static_cast<GpuSemaphoreOperation>(regs.semaphore_trigger & semaphoreOperationMask);
-    if (op == GpuSemaphoreOperation::WriteLong) {
-        struct Block {
-            u32 sequence;
-            u32 zeros = 0;
-            u64 timestamp;
-        };
+u64 GPU::GetTicks() const {
+    return impl->GetTicks();
+}
 
-        Block block{};
-        block.sequence = regs.semaphore_sequence;
-        // TODO(Kmather73): Generate a real GPU timestamp and write it here instead of
-        // CoreTiming
-        block.timestamp = GetTicks();
-        memory_manager->WriteBlock(regs.semaphore_address.SemaphoreAddress(), &block,
-                                   sizeof(block));
-    } else {
-        const u32 word{memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress())};
-        if ((op == GpuSemaphoreOperation::AcquireEqual && word == regs.semaphore_sequence) ||
-            (op == GpuSemaphoreOperation::AcquireGequal &&
-             static_cast<s32>(word - regs.semaphore_sequence) > 0) ||
-            (op == GpuSemaphoreOperation::AcquireMask && (word & regs.semaphore_sequence))) {
-            // Nothing to do in this case
-        } else {
-            regs.acquire_source = true;
-            regs.acquire_value = regs.semaphore_sequence;
-            if (op == GpuSemaphoreOperation::AcquireEqual) {
-                regs.acquire_active = true;
-                regs.acquire_mode = false;
-            } else if (op == GpuSemaphoreOperation::AcquireGequal) {
-                regs.acquire_active = true;
-                regs.acquire_mode = true;
-            } else if (op == GpuSemaphoreOperation::AcquireMask) {
-                // TODO(kemathe) The acquire mask operation waits for a value that, ANDed with
-                // semaphore_sequence, gives a non-0 result
-                LOG_ERROR(HW_GPU, "Invalid semaphore operation AcquireMask not implemented");
-            } else {
-                LOG_ERROR(HW_GPU, "Invalid semaphore operation");
-            }
-        }
-    }
+bool GPU::IsAsync() const {
+    return impl->IsAsync();
 }
 
-void GPU::ProcessSemaphoreRelease() {
-    memory_manager->Write<u32>(regs.semaphore_address.SemaphoreAddress(), regs.semaphore_release);
+bool GPU::UseNvdec() const {
+    return impl->UseNvdec();
 }
 
-void GPU::ProcessSemaphoreAcquire() {
-    const u32 word = memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress());
-    const auto value = regs.semaphore_acquire;
-    if (word != value) {
-        regs.acquire_active = true;
-        regs.acquire_value = value;
-        // TODO(kemathe73) figure out how to do the acquire_timeout
-        regs.acquire_mode = false;
-        regs.acquire_source = false;
-    }
+void GPU::RendererFrameEndNotify() {
+    impl->RendererFrameEndNotify();
 }
 
 void GPU::Start() {
-    gpu_thread.StartThread(*renderer, renderer->Context(), *dma_pusher);
-    cpu_context = renderer->GetRenderWindow().CreateSharedContext();
-    cpu_context->MakeCurrent();
+    impl->Start();
 }
 
 void GPU::ObtainContext() {
-    cpu_context->MakeCurrent();
+    impl->ObtainContext();
 }
 
 void GPU::ReleaseContext() {
-    cpu_context->DoneCurrent();
+    impl->ReleaseContext();
 }
 
 void GPU::PushGPUEntries(Tegra::CommandList&& entries) {
-    gpu_thread.SubmitList(std::move(entries));
+    impl->PushGPUEntries(std::move(entries));
 }
 
 void GPU::PushCommandBuffer(Tegra::ChCommandHeaderList& entries) {
-    if (!use_nvdec) {
-        return;
-    }
-
-    if (!cdma_pusher) {
-        cdma_pusher = std::make_unique<Tegra::CDmaPusher>(*this);
-    }
-
-    // SubmitCommandBuffer would make the nvdec operations async, this is not currently working
-    // TODO(ameerj): RE proper async nvdec operation
-    // gpu_thread.SubmitCommandBuffer(std::move(entries));
-
-    cdma_pusher->ProcessEntries(std::move(entries));
+    impl->PushCommandBuffer(entries);
 }
 
 void GPU::ClearCdmaInstance() {
-    cdma_pusher.reset();
+    impl->ClearCdmaInstance();
 }
 
 void GPU::SwapBuffers(const Tegra::FramebufferConfig* framebuffer) {
-    gpu_thread.SwapBuffers(framebuffer);
+    impl->SwapBuffers(framebuffer);
 }
 
 void GPU::FlushRegion(VAddr addr, u64 size) {
-    gpu_thread.FlushRegion(addr, size);
+    impl->FlushRegion(addr, size);
 }
 
 void GPU::InvalidateRegion(VAddr addr, u64 size) {
-    gpu_thread.InvalidateRegion(addr, size);
+    impl->InvalidateRegion(addr, size);
 }
 
 void GPU::FlushAndInvalidateRegion(VAddr addr, u64 size) {
-    gpu_thread.FlushAndInvalidateRegion(addr, size);
-}
-
-void GPU::TriggerCpuInterrupt(const u32 syncpoint_id, const u32 value) const {
-    auto& interrupt_manager = system.InterruptManager();
-    interrupt_manager.GPUInterruptSyncpt(syncpoint_id, value);
-}
-
-void GPU::OnCommandListEnd() {
-    if (is_async) {
-        // This command only applies to asynchronous GPU mode
-        gpu_thread.OnCommandListEnd();
-    }
+    impl->FlushAndInvalidateRegion(addr, size);
 }
 
 } // namespace Tegra