GPU: Implement a Fence Manager.

src/video_core/renderer_opengl/gl_fence_manager.cpp

@@ -0,0 +1,55 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+
+#include "video_core/renderer_opengl/gl_fence_manager.h"
+
+namespace OpenGL {
+
+GLInnerFence::GLInnerFence(GPUVAddr address, u32 payload)
+    : VideoCommon::FenceBase(address, payload), sync_object{} {}
+
+GLInnerFence::~GLInnerFence() = default;
+
+void GLInnerFence::Queue() {
+    ASSERT(sync_object.handle == 0);
+    sync_object.Create();
+}
+
+bool GLInnerFence::IsSignaled() const {
+    ASSERT(sync_object.handle != 0);
+    GLsizei length;
+    GLint sync_status;
+    glGetSynciv(sync_object.handle, GL_SYNC_STATUS, sizeof(GLint), &length, &sync_status);
+    return sync_status == GL_SIGNALED;
+}
+
+void GLInnerFence::Wait() {
+    ASSERT(sync_object.handle != 0);
+    while (glClientWaitSync(sync_object.handle, 0, 1000) == GL_TIMEOUT_EXPIRED)
+        ;
+}
+
+FenceManagerOpenGL::FenceManagerOpenGL(Core::System& system, VideoCore::RasterizerInterface& rasterizer,
+                               TextureCacheOpenGL& texture_cache)
+    : GenericFenceManager(system, rasterizer, texture_cache) {}
+
+Fence FenceManagerOpenGL::CreateFence(GPUVAddr addr, u32 value) {
+    return std::make_shared<GLInnerFence>(addr, value);
+}
+
+void FenceManagerOpenGL::QueueFence(Fence& fence) {
+    fence->Queue();
+}
+
+bool FenceManagerOpenGL::IsFenceSignaled(Fence& fence) {
+    return fence->IsSignaled();
+}
+
+void FenceManagerOpenGL::WaitFence(Fence& fence) {
+    fence->Wait();
+}
+
+} // namespace OpenGL

src/video_core/renderer_opengl/gl_fence_manager.h

@@ -0,0 +1,47 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <glad/glad.h>
+
+#include "common/common_types.h"
+#include "video_core/fence_manager.h"
+#include "video_core/renderer_opengl/gl_resource_manager.h"
+#include "video_core/renderer_opengl/gl_texture_cache.h"
+
+namespace OpenGL {
+
+class GLInnerFence : public VideoCommon::FenceBase {
+public:
+    GLInnerFence(GPUVAddr address, u32 payload);
+    ~GLInnerFence();
+
+    void Queue();
+
+    bool IsSignaled() const;
+
+    void Wait();
+
+private:
+    OGLSync sync_object;
+};
+
+using Fence = std::shared_ptr<GLInnerFence>;
+using GenericFenceManager = VideoCommon::FenceManager<Fence, TextureCacheOpenGL>;
+
+class FenceManagerOpenGL final : public GenericFenceManager {
+public:
+    FenceManagerOpenGL(Core::System& system, VideoCore::RasterizerInterface& rasterizer,
+                   TextureCacheOpenGL& texture_cache);
+
+protected:
+    Fence CreateFence(GPUVAddr addr, u32 value) override;
+    void QueueFence(Fence& fence) override;
+    bool IsFenceSignaled(Fence& fence) override;
+    void WaitFence(Fence& fence) override;
+};
+
+} // namespace OpenGL

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -101,7 +101,8 @@ RasterizerOpenGL::RasterizerOpenGL(Core::System& system, Core::Frontend::EmuWind
     : RasterizerAccelerated{system.Memory()}, texture_cache{system, *this, device, state_tracker},
       shader_cache{*this, system, emu_window, device}, query_cache{system, *this}, system{system},
       screen_info{info}, program_manager{program_manager}, state_tracker{state_tracker},
-      buffer_cache{*this, system, device, STREAM_BUFFER_SIZE} {
+      buffer_cache{*this, system, device, STREAM_BUFFER_SIZE}, fence_manager{system, *this,
+                                                                             texture_cache} {
     CheckExtensions();
 }
 
@@ -677,31 +678,11 @@ void RasterizerOpenGL::SyncGuestHost() {
 }
 
 void RasterizerOpenGL::SignalFence(GPUVAddr addr, u32 value) {
-    if (!fences.empty()) {
-        const std::pair<GPUVAddr, u32>& current_fence = fences.front();
-        const auto [address, payload] = current_fence;
-        texture_cache.PopAsyncFlushes();
-        auto& gpu{system.GPU()};
-        auto& memory_manager{gpu.MemoryManager()};
-        memory_manager.Write<u32>(address, payload);
-        fences.pop_front();
-    }
-    fences.emplace_back(addr, value);
-    texture_cache.CommitAsyncFlushes();
-    FlushCommands();
-    SyncGuestHost();
+    fence_manager.SignalFence(addr, value);
 }
 
 void RasterizerOpenGL::ReleaseFences() {
-    while (!fences.empty()) {
-        const std::pair<GPUVAddr, u32>& current_fence = fences.front();
-        const auto [address, payload] = current_fence;
-        texture_cache.PopAsyncFlushes();
-        auto& gpu{system.GPU()};
-        auto& memory_manager{gpu.MemoryManager()};
-        memory_manager.Write<u32>(address, payload);
-        fences.pop_front();
-    }
+    fence_manager.WaitPendingFences();
 }
 
 void RasterizerOpenGL::FlushAndInvalidateRegion(VAddr addr, u64 size) {

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -23,6 +23,7 @@
 #include "video_core/rasterizer_interface.h"
 #include "video_core/renderer_opengl/gl_buffer_cache.h"
 #include "video_core/renderer_opengl/gl_device.h"
+#include "video_core/renderer_opengl/gl_fence_manager.h"
 #include "video_core/renderer_opengl/gl_framebuffer_cache.h"
 #include "video_core/renderer_opengl/gl_query_cache.h"
 #include "video_core/renderer_opengl/gl_resource_manager.h"
@@ -226,6 +227,7 @@ private:
     SamplerCacheOpenGL sampler_cache;
     FramebufferCacheOpenGL framebuffer_cache;
     QueryCache query_cache;
+    FenceManagerOpenGL fence_manager;
 
     Core::System& system;
     ScreenInfo& screen_info;