| 颜色模式 | 不修改前景层图像的 alpha 通道值 | |
| 输入 | 输出 | |
| A8 | 0x43 | 0x43 |
| 0x31 | 0x31 | |
| 0x58 | 0x58 | |
| A4 | 0x43 | 0x33 |
| 0x44 | ||
| 0x31 | 0x11 | |
| 0x33 | ||
| 0x58 | 0x88 | |
| 0x55 | ||
| 颜色模式 | 原始前景层图像的 alpha 通道值替换为 ALPHA[7: 0] | |
| 输入 | 输出 | |
| A8 | 0x7F | 0x7F |
| 0x7F | 0x7F | |
| 0x7F | 0x7F | |
| A4 | 0x7F | 0x7F |
| 0x7F | ||
| 0x7F | 0x7F | |
| 0x7F | ||
| 0x7F | 0x7F | |
| 0x7F | ||
| 颜色模式 | 原始前景层图像的 alpha 通道值替换为 ALPHA[7: 0] 与原始 alpha 通道值的乘积 | |
| 输入 | 输出 | |
| A8 | 0x43 * 0x7F = 0x213D | 0x21 |
| 0x31 * 0x7F = 0x184F | 0x18 | |
| 0x58 * 0x7F = 0x2BA8 | 0x2B | |
| A4 | 0x33 * 0x7F = 0x194D | 0x19 |
| 0x44 * 0x7F = 0x21BC | 0x21 | |
| 0x11 * 0x7F = 0x086F | 0x08 | |
| 0x33 * 0x7F = 0x194D | 0x19 | |
| 0x88 * 0x7F = 0x4378 | 0x43 | |
| 0x55 * 0x7F = 0x2A2B | 0x2A | |
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