Unfortunately there are plenty of other places left. Perhaps we should
consider creating our own window when the context becomes invalid and making
the context current on that instead.
Updating a texture while it is attached to the currently bound FBO is
something GL implementations tend to get wrong. NVIDIA fails at
glTexSubImage2D(), fglrx and Mesa with glTexImage2D(). I'm afraid to try what
happens on OS X. Fortunately we never use glTexImage2D() while a texture is
attached to an FBO, so we only need to care about glTexSubImage2D().
For example, interpolating palette indices doesn't have the desired result.
Should we really want filtering for these cases we could implement it inside
the relevant shaders, after the fixup, but I doubt it's worth the effort.
Windows returns 32 byte aligned pointers when locking vertex and index
buffers, and some applications(Half Life 2, Alpha Prime, possibly others)
rely on this. Check the alignment and fall back to double buffered
buffers with HeapAlloced and aligned pointers if the alignment doesn't
fit.
Shaiya locks a non-dynamic buffer with the DISCARD flag and expects
the contents to be retained. The SDK says DISCARD requires dynamic
resources, and Windows 7 returns an error in this situation, crashing
Shaiya. This patch sticks to the Windows XP behavior and allows the
lock, but ignores the DISCARD flag to retain the buffer contents.
This also moves the event query faking code back to the external
interface and removes the temporary WINED3D_EVENT_QUERY_UNSUPPORTED
return value since wined3d_event_query_create properly fails if no
event query GL extension is supported.
The newly created wined3d_event_query_test will be available for
wined3d-internal use, primarily for synchronizing buffer updates when
using GL_APPLE_flush_buffer_range.
The wined3d_event_query interface will contain most of the functionality:
* Selecting the proper GL extension
* Context handling
* Thread handling
The IWineD3DEventQuery COM interface will use the internal interface
and implement event query faking on top of it (to enable games that
require event queries able to run on drivers that don't implement the
GL extension).
Henri Verbeet