I tried setting SDL_HINT_RENDER_DRIVER to "direct3d" on macOS just to see if it will fall back to the default renderer. Unfortunately this seems to not work as described in the documentation: If the application doesn't pick a specific renderer to use, this variable specifies the name of ...
在优化Ubuntu下的SDL2性能时,可以考虑以下几点技巧: 使用硬件加速:确保SDL2使用硬件加速功能,可以通过设置SDL_HINT_RENDER_DRIVER来指定使用的渲染器,如使用OpenGL渲染器可以提高性能。 使用双缓冲:双缓冲可以减少画面闪烁和撕裂,提高显示效果。 减少渲染次数:尽量减少渲染次数,避免频繁的重绘,可以通过合并绘制操作或者使用...
Hello! I just sawSDL_HINT_RENDER_DRIVERdoes not include the value "gpu" in its documentation: /*** A variable specifying which render driver to use.** If the application doesn't pick a specific renderer to use, this variable* specifies the name of the preferred renderer. If the preferred...
const SDL_RenderDriver *driver = render_drivers[index]; if (SDL_strcasecmp(hint, driver->info.name) == 0) { /* Create a new renderer instance */ renderer = driver->CreateRenderer(window, flags); break; } } } if (!renderer) { for (index = 0; index < n; ++index) { const SDL...
SDL_CreateRenderer(): 基于窗口创建渲染器(Render)。 SDL_CreateTexture(): 创建纹理(Texture)。 循环渲染数据: SDL_UpdateTexture(): 设置纹理的数据。 SDL_RenderCopy(): 纹理复制给渲染器。 SDL_RenderPresent(): 显示。 上篇文章分析了该流程中的第2个函数SDL_CreateWindow()。本文继续分析该流程中的第3个...
}printf("it is a test\n");// Register all formats and codecsav_register_all();//SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles2");if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {fprintf(stderr,"Could not initialize SDL - %s\n",SDL_GetError());exit(1); ...
使用ffmpeg+s..这里是代码SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles2");if (SDL_Init(SDL_INIT_VIDEO | SDL_IN
SDL_RenderDriver*driver=render_drivers[index];if(SDL_strcasecmp(hint,driver->info.name)==0){/* Create a new renderer instance */renderer=driver->CreateRenderer(window,flags);break;}}}if(!renderer){for(index=0;index<n;++index){constSDL_RenderDriver*driver=render_drivers[index];if((driver-...
so give up tons of CPU time between iterations. *//* 设置SDL_AppIterate的调用频率,15代表1秒种调用15次 */SDL_SetHint(SDL_HINT_MAIN_CALLBACK_RATE,"15");/* Initialize test framework *//* 初始化测试框架,调用的是SDL3_test.lib库*/state=SDLTest_CommonCreateState(argv,0);if(!state){retur...
("===max_texture_width %d ===\n",i,info.max_texture_width);}SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY,"linear");SDL_SetHint(SDL_HINT_RENDER_VSYNC,"1");ctx.renderer=SDL_CreateRenderer(window,1,0);if(!ctx.renderer){fprintf(stderr,"Couldn't create renderer: %s\n",SDL_GetError...