MASK_COLOR_8(3alleg4) Allegro manual MASK_COLOR_8(3alleg4)NAME
MASK_COLOR_8, MASK_COLOR_15, MASK_COLOR_16, MASK_COLOR_24, MASK_COLOR_32 - Constant representing the mask value in sprites. Allegro game
#define MASK_COLOR_8 0
#define MASK_COLOR_15 (5.5.5 pink)
#define MASK_COLOR_16 (5.6.5 pink)
#define MASK_COLOR_24 (8.8.8 pink)
#define MASK_COLOR_32 (8.8.8 pink)
Constants representing the colors used to mask transparent sprite pixels for each color depth. In 256-color resolutions this is zero, and
in truecolor modes it is bright pink (maximum red and blue, zero green).
SEE ALSO bitmap_mask_color(3alleg4), makecol(3alleg4), draw_sprite(3alleg4), masked_blit(3alleg4)Allegro version 4.4.2 MASK_COLOR_8(3alleg4)
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bitmap_mask_color(3alleg4) Allegro manual bitmap_mask_color(3alleg4)NAME
bitmap_mask_color - Returns the mask color of the specified bitmap. Allegro game programming library.
int bitmap_mask_color(BITMAP *bmp);
Returns the mask color for the specified bitmap (the value which is skipped when drawing sprites). For 256-color bitmaps this is zero, and
for truecolor bitmaps it is bright pink (maximum red and blue, zero green). A frequent use of this function is to clear a bitmap with the
mask color so you can later use this bitmap with masked_blit() or draw_sprite() after drawing other stuff on it. Example:
/* Replace mask color with another color. */
for (y = 0; y h; y++)
for (x = 0; x w; x++)
if (getpixel(bmp, x, y) == bitmap_mask_color(bmp))
putpixel(bmp, x, y, another_color);
SEE ALSO MASK_COLOR_8(3alleg4), set_color_depth(3alleg4), bitmap_color_depth(3alleg4), ex3d(3alleg4), exmouse(3alleg4), expat(3alleg4)Allegro version 4.4.2 bitmap_mask_color(3alleg4)
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