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exalpha(3) Allegro manual exalpha(3) NAME exalpha - Creating and using 32 bit RGBA sprites. Allegro game programming library. SYNOPSIS #include <allegro.h> Example exalpha DESCRIPTION This program demonstrates how to use the 32 bit RGBA translucency functions to store an alpha channel along with a bitmap graphic. Two images are loaded from disk. One will be used for the background and the other as a sprite. The example generates an alpha channel for the sprite image, com- posing the 32 bit RGBA bitmap during runtime, and draws it at the position of the mouse cursor. SEE ALSO BITMAP(3), END_OF_MAIN(3), SCREEN_H(3), SCREEN_W(3), allegro_error(3), al- legro_init(3), allegro_message(3), blit(3), clear_keybuf(3), cre- ate_bitmap(3), destroy_bitmap(3), draw_trans_sprite(3), drawing_mode(3), font(3), getb(3), getg(3), getpixel(3), getr(3), install_keyboard(3), in- stall_mouse(3), install_timer(3), keypressed(3), load_bitmap(3), makecol(3), mouse_x(3), mouse_y(3), putpixel(3), rectfill(3), replace_file- name(3), screen(3), set_alpha_blender(3), set_color_conversion(3), set_color_depth(3), set_gfx_mode(3), set_multiply_blender(3), set_write_al- pha_blender(3), solid_mode(3), stretch_blit(3), textprintf_ex(3) Allegro version 4.4.3 exalpha(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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