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ddraw: Remove unused code for ChangeUniquenessValue.

This commit is contained in:
Sebastian Lackner 2015-03-03 05:09:56 +01:00 committed by Alexandre Julliard
parent b282a937e2
commit 68528519fc
2 changed files with 1 additions and 31 deletions
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1
dlls/ddraw/ddraw_private.h
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@ -183,7 +183,6 @@ struct ddraw_surface
DDSURFACEDESC2 surface_desc;
/* Misc things */
DWORD uniqueness_value;
UINT mipmap_level;
/* Clipper objects */

31
dlls/ddraw/surface.c
View File

@ -3886,35 +3886,10 @@ static HRESULT WINAPI ddraw_surface2_GetDDInterface(IDirectDrawSurface2 *iface,
return ddraw_surface7_GetDDInterface(&surface->IDirectDrawSurface7_iface, ddraw);
}
/* This seems also windows implementation specific - I don't think WineD3D needs this */
static HRESULT WINAPI ddraw_surface7_ChangeUniquenessValue(IDirectDrawSurface7 *iface)
{
struct ddraw_surface *This = impl_from_IDirectDrawSurface7(iface);
volatile struct ddraw_surface* vThis = This;
TRACE("iface %p.\n", iface);
wined3d_mutex_lock();
/* A uniqueness value of 0 is apparently special.
* This needs to be checked.
* TODO: Write tests for this code and check if the volatile, interlocked stuff is really needed
*/
while (1) {
DWORD old_uniqueness_value = vThis->uniqueness_value;
DWORD new_uniqueness_value = old_uniqueness_value+1;
if (old_uniqueness_value == 0) break;
if (new_uniqueness_value == 0) new_uniqueness_value = 1;
if (InterlockedCompareExchange((LONG*)&vThis->uniqueness_value,
old_uniqueness_value,
new_uniqueness_value)
== old_uniqueness_value)
break;
}
wined3d_mutex_unlock();
return DD_OK;
}
@ -3929,13 +3904,9 @@ static HRESULT WINAPI ddraw_surface4_ChangeUniquenessValue(IDirectDrawSurface4 *
static HRESULT WINAPI ddraw_surface7_GetUniquenessValue(IDirectDrawSurface7 *iface, DWORD *pValue)
{
struct ddraw_surface *surface = impl_from_IDirectDrawSurface7(iface);
TRACE("iface %p, value %p.\n", iface, pValue);
wined3d_mutex_lock();
*pValue = surface->uniqueness_value;
wined3d_mutex_unlock();
*pValue = 0;
return DD_OK;
}