Graphics Format Swizzle.
| FormatSwizzleR | The channel specified contains red. |
| FormatSwizzleG | The channel specified contains green. |
| FormatSwizzleB | The channel specified contains blue. |
| FormatSwizzleA | The channel specified contains alpha. |
| FormatSwizzle0 | The channel specified is not present for the format |
| FormatSwizzle1 | The channel specified is not present for the format. |