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Add a new prepareToRender() callback for renders to perform their initial window clears

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This consolidates all the clearing that was strewn across the codebase.
This commit is contained in:
Cameron Gutman
2024-06-25 23:12:18 -05:00
parent 1d1fa0577b
commit e76780e105
11 changed files with 105 additions and 73 deletions
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18
app/streaming/session.cpp
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@@ -1802,24 +1802,6 @@ void Session::execInternal()
FillRect(info.info.win.hdc, &clientRect, blackBrush);
DeleteObject(blackBrush);
}
#else
if (strcmp(SDL_GetCurrentVideoDriver(), "KMSDRM") == 0) {
// Create a dummy renderer to force SDL to complete the modesetting
// operation that the KMSDRM backend keeps pending until the next
// time we swap buffers.
SDL_Renderer* renderer = SDL_CreateRenderer(m_Window, -1, SDL_RENDERER_SOFTWARE);
if (renderer != nullptr) {
SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_DestroyRenderer(renderer);
}
else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_CreateRenderer() for KMSDRM modesetting failed: %s",
SDL_GetError());
}
}
#endif
}