06a0d86e9c
This uses the mailbox model to move pixel downloading to its own thread, eliminating Nvidia's warnings and (possibly) making use of GPU copy engine. To achieve this, we created a new mailbox type that is different from the presentation mailbox in that it never discards a rendered frame. Also, I tweaked the projection matrix thing so that it can just draw the frame upside down instead of having the CPU flip it.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
// Copyright 2020 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <atomic>
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#include <memory>
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#include <thread>
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#include "core/dumping/backend.h"
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#include "core/frontend/framebuffer_layout.h"
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#include "video_core/renderer_opengl/gl_resource_manager.h"
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namespace Frontend {
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class EmuWindow;
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class GraphicsContext;
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class TextureMailbox;
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} // namespace Frontend
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namespace OpenGL {
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class RendererOpenGL;
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/**
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* This is the 'presentation' part in frame dumping.
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* Processes frames/textures sent to its mailbox, downloads the pixels and sends the data
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* to the video encoding backend.
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*/
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class FrameDumperOpenGL {
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public:
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explicit FrameDumperOpenGL(VideoDumper::Backend& video_dumper, Frontend::EmuWindow& emu_window);
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~FrameDumperOpenGL();
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bool IsDumping() const;
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Layout::FramebufferLayout GetLayout() const;
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void StartDumping();
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void StopDumping();
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std::unique_ptr<Frontend::TextureMailbox> mailbox;
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private:
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void InitializeOpenGLObjects();
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void CleanupOpenGLObjects();
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void PresentLoop();
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VideoDumper::Backend& video_dumper;
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std::unique_ptr<Frontend::GraphicsContext> context;
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std::thread present_thread;
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std::atomic_bool stop_requested{false};
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// PBOs used to dump frames faster
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std::array<OGLBuffer, 2> pbos;
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GLuint current_pbo = 1;
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GLuint next_pbo = 0;
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};
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} // namespace OpenGL
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