SDL_GPUFrontFace.3type - Man Page

#include <SDL3/SDL_gpu.h>

typedef enum SDL_GPUFrontFace
{
    SDL_GPU_FRONTFACE_COUNTER_CLOCKWISE,  /**< A triangle with counter-clockwise vertex winding will be considered front-facing. */
    SDL_GPU_FRONTFACE_CLOCKWISE           /**< A triangle with clockwise vertex winding will be considered front-facing. */
} SDL_GPUFrontFace;

This enum is available since SDL 3.2.0.

SDL_CreateGPUGraphicsPipeline(3)