PIXEL_BITS
bit += PIXEL_BITS)
for (bit = col; bit < 32; bit += PIXEL_BITS)
for (bit = 0; bit < 32; bit += PIXEL_BITS)
for (bit = 0; bit < width; bit += PIXEL_BITS)
#define COLOR_MASK __BITS(32 - PIXEL_BITS, 31)
(tmp) |= c << (32 - PIXEL_BITS - bit); \