# SDL_GPUBlendOp

Specifies the operator to be used when pixels in a render target are blended with existing pixels in the texture.

## Header File

Defined in [<SDL3/SDL_gpu.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_gpu.h)

## Syntax

```c
typedef enum SDL_GPUBlendOp
{
    SDL_GPU_BLENDOP_INVALID,
    SDL_GPU_BLENDOP_ADD,               /**< (source * source_factor) + (destination * destination_factor) */
    SDL_GPU_BLENDOP_SUBTRACT,          /**< (source * source_factor) - (destination * destination_factor) */
    SDL_GPU_BLENDOP_REVERSE_SUBTRACT,  /**< (destination * destination_factor) - (source * source_factor) */
    SDL_GPU_BLENDOP_MIN,               /**< min(source, destination) */
    SDL_GPU_BLENDOP_MAX                /**< max(source, destination) */
} SDL_GPUBlendOp;
```

## Remarks

The source color is the value written by the fragment shader. The
destination color is the value currently existing in the texture.

## Version

This enum is available since SDL 3.2.0.

## See Also

- [SDL_CreateGPUGraphicsPipeline](SDL_CreateGPUGraphicsPipeline)

----
[CategoryAPI](CategoryAPI), [CategoryAPIEnum](CategoryAPIEnum), [CategoryGPU](CategoryGPU)

