wined3d: Prefer aux buffer matches over alpha matches.

Half Life 2 uses D3DFMT_X8R8G8B8 for the back buffer, but macos supports aux buffers only on D3DFMT_A8R8G8B8. I think having aux buffers is more important right now than having a precise alpha match.

wined3d: Prefer aux buffer matches over alpha matches.
77204574 · Stefan Dösinger · Alexandre Julliard · 08f4b87f · 77204574
Commit 77204574 authored Aug 14, 2008 by Stefan Dösinger Committed by Alexandre Julliard Aug 21, 2008
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context.c dlls/wined3d/context.c +7 -5

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--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -129,17 +129,19 @@ static int WineD3D_ChoosePixelFormat(IWineD3DDeviceImpl *This, HDC hdc, WINED3DF
        BOOL exact_alpha;
        BOOL exact_color;
    } matches[] = {
-        /* First, try without aux buffers - this is the most common cause
-         * for not finding a pixel format. Also some drivers(the open source ones)
+        /* First, try without alpha match buffers. MacOS supports aux buffers only
+         * on A8R8G8B8, and we prefer better offscreen rendering over an alpha match.
+         * Then try without aux buffers - this is the most common cause for not
+         * finding a pixel format. Also some drivers(the open source ones)
         * only offer 32 bit ARB pixel formats. First try without an exact alpha
         * match, then try without an exact alpha and color match.
         */
-        { TRUE,  TRUE,  TRUE  },
        { FALSE, TRUE,  TRUE  },
-        { TRUE,  FALSE, TRUE  },
-        { TRUE,  FALSE, FALSE },
+        { TRUE,  TRUE,  TRUE  },
        { FALSE, FALSE, TRUE  },
        { FALSE, FALSE, FALSE },
+        { TRUE,  FALSE, TRUE  },
+        { TRUE,  FALSE, FALSE },
    };

    int i = 0;