.\" Generated by the Allegro makedoc utility .TH makeacol 3alleg4 "version 4.4.3" "Allegro" "Allegro manual" .SH NAME makeacol, makeacol_depth \- Converts RGBA colors into display dependent pixel formats. Allegro game programming library.\& .SH SYNOPSIS .B #include .sp .B int makeacol(int r, int g, int b, int a); .B int makeacol_depth(int color_depth, int r, int g, int b, int a); .SH DESCRIPTION Convert RGBA colors into display dependent pixel formats. In anything less than a 32-bit mode, these are the same as calling makecol() or makecol_depth(), but by using these routines it is possible to create 32-bit color values that contain a true 8 bit alpha channel along with the red, green, and blue components. 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 "RETURN VALUE" Returns the requested RGBA quadruplet. .SH SEE ALSO .BR makecol (3alleg4), .BR makecol_depth (3alleg4), .BR set_alpha_blender (3alleg4), .BR set_write_alpha_blender (3alleg4), .BR exrotscl (3alleg4)