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wined3d: Clarify WINED3DUSAGE_WRITEONLY a bit.

This commit is contained in:
Henri Verbeet 2014-07-14 10:04:23 +02:00 committed by Alexandre Julliard
parent 1360af6adc
commit 63f2b65141
1 changed files with 6 additions and 0 deletions
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6
dlls/wined3d/resource.c
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@ -59,6 +59,12 @@ static void resource_check_usage(DWORD usage)
| WINED3DUSAGE_OVERLAY | WINED3DUSAGE_OVERLAY
| WINED3DUSAGE_TEXTURE; | WINED3DUSAGE_TEXTURE;
/* WINED3DUSAGE_WRITEONLY is supposed to result in write-combined mappings
* being returned. OpenGL doesn't give us explicit control over that, but
* the hints and access flags we set for typical access patterns on
* dynamic resources should in theory have the same effect on the OpenGL
* driver. */
if (usage & ~handled) if (usage & ~handled)
FIXME("Unhandled usage flags %#x.\n", usage & ~handled); FIXME("Unhandled usage flags %#x.\n", usage & ~handled);
if ((usage & (WINED3DUSAGE_DYNAMIC | WINED3DUSAGE_WRITEONLY)) == WINED3DUSAGE_DYNAMIC) if ((usage & (WINED3DUSAGE_DYNAMIC | WINED3DUSAGE_WRITEONLY)) == WINED3DUSAGE_DYNAMIC)