SDL_GPUFillMode.3type - Man Page

#include <SDL3/SDL_gpu.h>

typedef enum SDL_GPUFillMode
{
    SDL_GPU_FILLMODE_FILL,  /**< Polygons will be rendered via rasterization. */
    SDL_GPU_FILLMODE_LINE   /**< Polygon edges will be drawn as line segments. */
} SDL_GPUFillMode;

This enum is available since SDL 3.2.0.

SDL_CreateGPUGraphicsPipeline(3)