无法使用SDL_PIXELFORMAT_NV12像素格式创建SDL2纹理

Question

I'm using SDL 2.0.5 and Windows 10 to create a window and display a texture.

Everything works fine when the texture has been initialized with SDL_PIXELFORMAT_YV12 pixel format, but when I set the format to SDL_PIXELFORMAT_NV12, SDL_CreateTexture function returns null.

Here's the code:

SDL_Window* window = SDL_CreateWindow(
    "Test",
    SDL_WINDOWPOS_UNDEFINED,
    SDL_WINDOWPOS_UNDEFINED,
    width,
    height,
    SDL_WINDOW_FULLSCREEN_DESKTOP
);

SDL_Renderer* renderer = SDL_CreateRenderer(window , -1, SDL_RENDERER_SOFTWARE);

SDL_Texture* texture = SDL_CreateTexture(
    renderer,
    SDL_PIXELFORMAT_NV12,
    SDL_TEXTUREACCESS_STREAMING,
    width,
    height
);

Am I missing something?

Answer 1

According to keltar's comment, SDL_PIXELFORMAT_NV12 requires an hardware acceleration.

One solution is to use the OpenGL renderer which supports NV12 pixel format.

So, setting hint as follow: SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl"); and setting SDL_RENDERER_ACCELERATED flag to SDL_CreateRenderer function does the trick.