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gdi32: Test retrieving BI_BITFIELDS info for 16bpp modes.

This commit is contained in:
Dan Kegel 2008-03-29 21:24:43 -07:00 committed by Alexandre Julliard
parent a28b86a78e
commit 338539c709
1 changed files with 57 additions and 0 deletions
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57
dlls/gdi32/tests/bitmap.c
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@ -1595,6 +1595,62 @@ todo_wine
ReleaseDC(0, hdc);
}
static void test_GetDIBits_BI_BITFIELDS(void)
{
/* Try a screen resolution detection technique
* from the September 1999 issue of Windows Developer's Journal
* which seems to be in widespread use.
* http://www.lesher.ws/highcolor.html
* http://www.lesher.ws/vidfmt.c
* It hinges on being able to retrieve the bitmaps
* for the three primary colors in nonpaletted 16 bit mode.
*/
char dibinfo_buf[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)];
LPBITMAPINFO dibinfo = (LPBITMAPINFO) dibinfo_buf;
HDC hdc;
HBITMAP hbm;
int ret;
memset(dibinfo, 0, sizeof(dibinfo_buf));
dibinfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
hdc = GetDC(NULL);
ok(hdc != NULL, "GetDC failed?\n");
hbm = CreateCompatibleBitmap(hdc, 1, 1);
ok(hbm != NULL, "CreateCompatibleBitmap failed?\n");
/* Call GetDIBits to fill in bmiHeader. */
ret = GetDIBits(hdc, hbm, 0, 1, NULL, dibinfo, DIB_RGB_COLORS);
ok(ret == 1, "GetDIBits failed\n");
if (dibinfo->bmiHeader.biBitCount == 16
&& dibinfo->bmiHeader.biCompression == BI_BITFIELDS) {
/* In the BITMAPINFOHEADER doc, this little struct is implicit.
* Making explicit for clarity.
*/
struct bi_bitfields_s {
DWORD red;
DWORD blue;
DWORD green;
} *bitmasks;
/* Retrieve the BI_BITFIELDS info (requires second call, honest). */
ret = GetDIBits(hdc, hbm, 0, 1, NULL, dibinfo, DIB_RGB_COLORS);
ok(ret == 1, "GetDIBits failed\n");
bitmasks = (struct bi_bitfields_s *) dibinfo->bmiColors;
todo_wine {
ok(bitmasks->red != 0, "expected space for red pixels\n");
ok(bitmasks->blue != 0, "expected space for blue pixels\n");
ok(bitmasks->green != 0, "expected space for green pixels\n");
}
} else {
skip("not in 16 bpp BI_BITFIELDS mode, skipping that test\n");
}
DeleteObject(hbm);
ReleaseDC(NULL, hdc);
}
static void test_select_object(void)
{
HDC hdc;
@ -2036,6 +2092,7 @@ START_TEST(bitmap)
test_GetDIBits_selected_DDB(TRUE);
test_GetDIBits_selected_DDB(FALSE);
test_GetDIBits();
test_GetDIBits_BI_BITFIELDS();
test_select_object();
test_CreateBitmap();
test_GdiAlphaBlend();