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gdi32/tests: Fix the SetDeviceGammaRamp() tests on Windows 10 1909.

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SetDeviceGammaRamp() checks the specified ramp to prevent applications
from setting malicious gamma ramps (e.g. hiding text by remapping its
color to match the background).
But Windows 10 1909 has fewer checks than later Windows 10 versions.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54593
This commit is contained in:
Francois Gouget 2023-02-27 10:47:19 +01:00 committed by Alexandre Julliard
parent 267f612604
commit 9d6a9909c3
1 changed files with 6 additions and 3 deletions
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9
dlls/gdi32/tests/dc.c
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@ -1268,12 +1268,14 @@ static void test_gamma(void)
/* set one color ramp to zeros */
memset(ramp[0], 0, sizeof(ramp[0]));
ret = SetDeviceGammaRamp(hdc, &ramp);
ok(!ret, "SetDeviceGammaRamp(zeroes) succeeded\n");
ok(!ret || broken(ret /* win1909 */),
"SetDeviceGammaRamp(zeroes) succeeded\n");
/* set one color ramp to a flat straight rising line */
for (i = 0; i < 256; i++) ramp[0][i] = i;
ret = SetDeviceGammaRamp(hdc, &ramp);
todo_wine ok(!ret, "SetDeviceGammaRamp(low) succeeded\n");
todo_wine ok(!ret || broken(ret /* win1909 */),
"SetDeviceGammaRamp(low) succeeded\n");
/* set one color ramp to a steep straight rising line */
for (i = 0; i < 256; i++) ramp[0][i] = i * 256;
@ -1285,7 +1287,8 @@ static void test_gamma(void)
ramp[0][1] = 0x7FFF;
for (i = 2; i < 256; i++) ramp[0][i] = 0xFFFF;
ret = SetDeviceGammaRamp(hdc, &ramp);
ok(!ret, "SetDeviceGammaRam(bright) succeeded\n");
ok(!ret || broken(ret /* win1909 */),
"SetDeviceGammaRam(bright) succeeded\n");
/* try ramps which are not uniform */
for (i = 0; i < 256; i++) ramp[0][i] = 512 * i; /* wraps midway */