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https://github.com/InstanceBrick/nightcap.git
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vii
02108a9bb1
Every keystroke re-ran TTF_Init, a fontconfig sort, six TTF_OpenFont calls and TTF_Quit on the render thread. Hold the opened fonts on the overlay and reopen them only when the Roblox font or the point size changes, keeping the current set when a reopen fails. Measured over 100 rasters, 1.59 ms to 0.12 ms per keystroke.
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
#ifndef MOCKTAIL_RUNTIME_ROBLOX_TEXT_SURFACE_OVERLAY_H_
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#define MOCKTAIL_RUNTIME_ROBLOX_TEXT_SURFACE_OVERLAY_H_
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#include <cstddef>
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#include <cstdint>
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#include <mutex>
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#include <string>
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#include <vector>
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#include "mocktail/graphics/text_overlay_frame.h"
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#include "mocktail/status.h"
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#include "runtime/roblox_text_display_state.h"
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struct TTF_Font;
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namespace mocktail {
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namespace runtime {
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// Thread-safe bridge from Roblox's synchronous TextBox callback to the
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// direct-Vulkan present path. The input callback only updates bounded state.
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// SDL3_ttf rasterization is deferred to the render thread and the resulting
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// RGBA frame is copied into the existing swapchain by libvulkan.so.
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class RobloxTextSurfaceOverlay final {
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public:
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RobloxTextSurfaceOverlay() = default;
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~RobloxTextSurfaceOverlay();
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RobloxTextSurfaceOverlay(const RobloxTextSurfaceOverlay&) = delete;
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RobloxTextSurfaceOverlay& operator=(const RobloxTextSurfaceOverlay&) = delete;
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Status Initialize(RobloxTextOverlayViewport viewport);
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Status UpdateViewport(RobloxTextOverlayViewport viewport);
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Status Shutdown();
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RobloxTextDisplaySink sink();
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bool QueryFrame(MocktailTextOverlayFrameInfo* frame);
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bool CopyFrame(std::uint64_t revision, void* rgba, std::size_t rgba_capacity);
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private:
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static void UpdateCallback(void* context,
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const RobloxTextDisplayUpdate& update);
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void ApplyUpdate(const RobloxTextDisplayUpdate& update);
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Status RasterizeLocked();
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Status OpenFontsLocked(std::int32_t font, float point_size);
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void CloseFontsLocked();
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void ClearFrameLocked();
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void RecordFailureLocked(Status status);
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std::mutex mutex_;
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RobloxTextDisplayState state_;
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RobloxTextOverlayViewport viewport_;
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std::vector<std::uint8_t> rgba_;
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std::vector<TTF_Font*> fonts_;
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std::int32_t fonts_font_ = 0;
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float fonts_point_size_ = 0.0F;
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std::uint64_t state_revision_ = 0;
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std::uint64_t raster_revision_ = 0;
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Status failure_;
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bool initialized_ = false;
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bool ttf_initialized_ = false;
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bool failure_logged_ = false;
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bool ready_logged_ = false;
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};
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} // namespace runtime
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} // namespace mocktail
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#endif // MOCKTAIL_RUNTIME_ROBLOX_TEXT_SURFACE_OVERLAY_H_
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