diff options
| -rw-r--r-- | src/core/frontend/emu_window.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/core/frontend/emu_window.h b/src/core/frontend/emu_window.h index 3376eedc5..5dde199d4 100644 --- a/src/core/frontend/emu_window.h +++ b/src/core/frontend/emu_window.h @@ -12,6 +12,45 @@ namespace Core::Frontend { +struct Frame; +/** + * For smooth Vsync rendering, we want to always present the latest frame that the core generates, + * but also make sure that rendering happens at the pace that the frontend dictates. This is a + * helper class that the renderer can define to sync frames between the render thread and the + * presentation thread + */ +class TextureMailbox { +public: + virtual ~TextureMailbox() = default; + + /** + * Recreate the render objects attached to this frame with the new specified width/height + */ + virtual void ReloadRenderFrame(Frontend::Frame* frame, u32 width, u32 height) = 0; + + /** + * Recreate the presentation objects attached to this frame with the new specified width/height + */ + virtual void ReloadPresentFrame(Frontend::Frame* frame, u32 width, u32 height) = 0; + + /** + * Render thread calls this to get an available frame to present + */ + virtual Frontend::Frame* GetRenderFrame() = 0; + + /** + * Render thread calls this after draw commands are done to add to the presentation mailbox + */ + virtual void ReleaseRenderFrame(Frame* frame) = 0; + + /** + * Presentation thread calls this to get the latest frame available to present. If there is no + * frame available after timeout, returns the previous frame. If there is no previous frame it + * returns nullptr + */ + virtual Frontend::Frame* TryGetPresentFrame(int timeout_ms) = 0; +}; + /** * Represents a graphics context that can be used for background computation or drawing. If the * graphics backend doesn't require the context, then the implementation of these methods can be @@ -132,6 +171,8 @@ public: */ void UpdateCurrentFramebufferLayout(unsigned width, unsigned height); + std::unique_ptr<TextureMailbox> mailbox; + protected: EmuWindow(); virtual ~EmuWindow(); |