.\" Generated by the Allegro makedoc utility .TH makeacol32 3alleg4 "version 4.4.3" "Allegro" "Allegro manual" .SH NAME makeacol32 \- Converts an RGBA color into a 32-bit display pixel format. Allegro game programming library.\& .SH SYNOPSIS .B #include .sp .B int makeacol32(int r, int g, int b, int a); .SH DESCRIPTION Converts an RGBA color into a 32-bit display pixel format, which includes 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. .SH SEE ALSO .BR makeacol (3alleg4), .BR set_alpha_blender (3alleg4), .BR set_write_alpha_blender (3alleg4)