wined3d: Try to avoid stalling on dynamic buffer maps.

Particularly for applications that use dynamic buffers without WINED3D_MAP_DISCARD/WINED3D_MAP_NOOVERWRITE. Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

wined3d: Try to avoid stalling on dynamic buffer maps.
afb2aa25 · Henri Verbeet · Alexandre Julliard · efdb898b · afb2aa25
Commit afb2aa25 authored Jan 30, 2017 by Henri Verbeet Committed by Alexandre Julliard Jan 30, 2017
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buffer.c dlls/wined3d/buffer.c +2 -1

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--- a/dlls/wined3d/buffer.c
+++ b/dlls/wined3d/buffer.c
@@ -1039,7 +1039,8 @@ static HRESULT wined3d_buffer_map(struct wined3d_buffer *buffer, UINT offset, UI
            dirty_size = 0;
        }

-        if (buffer->flags & WINED3D_BUFFER_PIN_SYSMEM)
+        if (!(flags & (WINED3D_MAP_NOOVERWRITE | WINED3D_MAP_DISCARD | WINED3D_MAP_READONLY))
+                || buffer->flags & WINED3D_BUFFER_PIN_SYSMEM)
        {
            if (!(buffer->locations & WINED3D_LOCATION_SYSMEM))
            {