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gdi32/tests: Simplify the DIB byte width computation.

oldstable
Alexandre Julliard 2011-07-27 13:22:53 +02:00
parent 4e3c649b9c
commit afa7817d6e
1 changed files with 1 additions and 19 deletions
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20
dlls/gdi32/tests/bitmap.c
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@ -255,25 +255,7 @@ static void test_createdibitmap(void)
static INT DIB_GetWidthBytes( int width, int bpp )
{
int words;
switch (bpp)
{
case 1: words = (width + 31) / 32; break;
case 4: words = (width + 7) / 8; break;
case 8: words = (width + 3) / 4; break;
case 15:
case 16: words = (width + 1) / 2; break;
case 24: words = (width * 3 + 3)/4; break;
case 32: words = width; break;
default:
words=0;
trace("Unknown depth %d, please report.\n", bpp );
assert(0);
break;
}
return 4 * words;
return ((width * bpp + 31) / 8) & ~3;
}
static void test_dib_info(HBITMAP hbm, const void *bits, const BITMAPINFOHEADER *bmih)