[AL] set_multiply_blender

[David C. <dcu...@be...>]

Dear Eric,

>Yes, multiply operations are not cheap and they are performed on a
per-pixel
>basis by the blending engine. Just to be sure: you don't draw_trans_blit()
>directly to the screen, do you ?

No, the docs are pretty clear on that (alleg014.html#draw_trans_sprite):

>Warning: if the hardware acceleration flag is not set, draw_sprite() will
not work correctly when used with a video >memory source image, and the
input graphic must always be a memory bitmap!

I probably have hardware acceleration on my machine, but I can't assume that
people running my demo will.

May God bless you,
David Cullen