Am Samstag, 15. Dezember 2007 12:19:36 schrieb Alexander Dorofeyev: > This seems to be specific to front buffer. Maybe > glFlush really should be called in BltOverride (or clearing subroutine) if > the target is front buffer? Yes, glFlush() has to be called when writing to the front buffer. SwapBuffers does an implicit flush, so for the back buffer you don't have to do anything, but the front buffer needs a glFlush(). It isn't there yet, so it should be added.
Your patch looks quite good, but you should remove the original code from IWineD3DDeviceImpl_Clear() and make it call ClearSurface() as well. The fbo activation you moved is a different problem. It needs to be fixed as well, but it is not as easy as swapping the calls :-( . Essentially, ActivateContext has to be called before the fbo setup, due to multithreading concerns. On the other hand, some things ActivateContext does fail if an fbo is active, so fbos must be set before activatecontext. Essentially we'll have to move fbo setup into ActivateContext, but this has some implications on multiple render targets and depth stencil swapping which need more investigation. OpenGL driver limitations play a role here as well.
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