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makeacol32(3) Allegro manual makeacol32(3) NAME makeacol32 - Converts an RGBA color into a 32-bit display pixel format. Allegro game programming library. SYNOPSIS #include <allegro.h> int makeacol32(int r, int g, int b, int a); DESCRIPTION Converts an RGBA color into a 32-bit display pixel format, which in- cludes an alpha (transparency) value. There are no versions of this routine for other color depths, because only the 32-bit format has enough room to store a proper alpha channel. You should only use RGBA format colors as the input to draw_trans_sprite() or draw_trans_rle_sprite() after calling set_alpha_blender(), rather than drawing them directly to the screen. SEE ALSO makeacol(3), set_alpha_blender(3), set_write_alpha_blender(3) Allegro version 4.4.3 makeacol32(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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