| 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) |
sourceはフラグメントシェーダによって書き込まれた値であり, destinationはテクスチャの現在の値である.