Francois Gouget : gdi32/tests: Simplify setting up the non uniform gamma ramps.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 390ed160ef96ad3673448fd48803c6e22792a9cf
URL:    https://gitlab.winehq.org/wine/wine/-/commit/390ed160ef96ad3673448fd48803c6e...

Author: Francois Gouget 
Date:   Mon Feb 27 08:51:13 2023 +0100

gdi32/tests: Simplify setting up the non uniform gamma ramps.

---

dlls/gdi32/tests/dc.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/dlls/gdi32/tests/dc.c b/dlls/gdi32/tests/dc.c
index c64ef332060..b556fb58f13 100644
--- a/dlls/gdi32/tests/dc.c
+++ b/dlls/gdi32/tests/dc.c
@@ -1288,16 +1288,11 @@ static void test_gamma(void)
     ok(!ret, "SetDeviceGammaRamp succeeded\n");

/* try ramps which are not uniform */
-    ramp[0][0] = 0;
-    for (i = 1; i < 256; i++) ramp[0][i] = ramp[0][i - 1] + 512;
+    for (i = 0; i < 256; i++) ramp[0][i] = 512 * i; /* wraps midway */
     ret = SetDeviceGammaRamp(hdc, &ramp);
     ok(ret, "SetDeviceGammaRamp failed\n");
-    ramp[0][0] = 0;
-    for (i = 2; i < 256; i+=2)
-    {
-        ramp[0][i - 1] = ramp[0][i - 2];
-        ramp[0][i] = ramp[0][i - 2] + 512;
-    }
+    for (i = 0; i < 256; i += 2)
+         ramp[0][i] = ramp[0][i + 1] = 256 * i; /* stairs */
     ret = SetDeviceGammaRamp(hdc, &ramp);
     ok(ret, "SetDeviceGammaRamp failed\n");