Henri Verbeet : d3d11/tests: Introduce compare_uint().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 6d195ad98646b4cf9e3848110716a3a3229cee06
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=6d195ad98646b4cf9e3848110716a3a3229cee06

Author: Henri Verbeet <hverbeet at codeweavers.com>
Date:   Mon Mar 30 20:48:11 2020 +0430

d3d11/tests: Introduce compare_uint().

Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/d3d11/tests/d3d11.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/dlls/d3d11/tests/d3d11.c b/dlls/d3d11/tests/d3d11.c
index dcde0d1c10..37ec829cd7 100644
--- a/dlls/d3d11/tests/d3d11.c
+++ b/dlls/d3d11/tests/d3d11.c
@@ -260,6 +260,13 @@ static BOOL compare_vec4(const struct vec4 *v1, const struct vec4 *v2, unsigned
             && compare_float(v1->w, v2->w, ulps);
 }
 
+static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
+{
+    unsigned int diff = x > y ? x - y : y - x;
+
+    return diff <= max_diff;
+}
+
 static BOOL compare_uvec4(const struct uvec4* v1, const struct uvec4 *v2)
 {
     return v1->x == v2->x && v1->y == v2->y && v1->z == v2->z && v1->w == v2->w;
@@ -267,18 +274,10 @@ static BOOL compare_uvec4(const struct uvec4* v1, const struct uvec4 *v2)
 
 static BOOL compare_color(DWORD c1, DWORD c2, BYTE max_diff)
 {
-    if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff)
-        return FALSE;
-    c1 >>= 8; c2 >>= 8;
-    if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff)
-        return FALSE;
-    c1 >>= 8; c2 >>= 8;
-    if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff)
-        return FALSE;
-    c1 >>= 8; c2 >>= 8;
-    if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff)
-        return FALSE;
-    return TRUE;
+    return compare_uint(c1 & 0xff, c2 & 0xff, max_diff)
+            && compare_uint((c1 >> 8) & 0xff, (c2 >> 8) & 0xff, max_diff)
+            && compare_uint((c1 >> 16) & 0xff, (c2 >> 16) & 0xff, max_diff)
+            && compare_uint((c1 >> 24) & 0xff, (c2 >> 24) & 0xff, max_diff);
 }
 
 struct srv_desc