Surface.blit在1.8版本中新增了一个参数:混合(blend)。以下是定义的值:
BLEND_ADD
(相加)BLEND_SUB
(相减)BLEND_MULT
(相乘)BLEND_MIN
(最小值)BLEND_MAX
(最大值)BLEND_RGBA_ADD
(RGBA相加)BLEND_RGBA_SUB
(RGBA相减)BLEND_RGBA_MULT
(RGBA相乘)BLEND_RGBA_MIN
(RGBA最小值)BLEND_RGBA_MAX
(RGBA最大值)BLEND_RGB_ADD
(RGB相加)BLEND_RGB_SUB
(RGB相减)BLEND_RGB_MULT
(RGB相乘)BLEND_RGB_MIN
(RGB最小值)BLEND_RGB_MAX
(RGB最大值)
请问这些模式代表什么意思?