SDL_GPUMultisampleState.3type - Man Page

#include <SDL3/SDL_gpu.h>

typedef struct SDL_GPUMultisampleState
{
    SDL_GPUSampleCount sample_count;  /**< The number of samples to be used in rasterization. */
    Uint32 sample_mask;               /**< Reserved for future use. Must be set to 0. */
    bool enable_mask;             /**< Reserved for future use. Must be set to false. */
    Uint8 padding1;
    Uint8 padding2;
    Uint8 padding3;
} SDL_GPUMultisampleState;

This struct is available since SDL 3.2.0.

SDL_GPUGraphicsPipelineCreateInfo(3type)