As I understand it, there is still a long time before the opengl renderer will become the default one. With Wine 0.9.45, some bugs were fixed allowing the opengl renderer to be used for C&C Tiberian Sun, and I must say the speed improvements are dramatic! Without any FPS tools I would definitely say performance has increased by several hundred per cent. Now the game is so fast I may have to turn down the game speed setting. :) If you move the mouse it still slows down, though, as it does with the gdi renderer.
There are roughly three bottlenecks for 2D games: - GetDC/ReleaseDC which are used to draw to the framebuffer using GDI functions (requires nasty framebuffer downloads/uploads) - Depth conversion (mainly for palette p8 games like starcraft / c&c1 / red alert) - LockRect/UnlockRect which give direct access (a pointer) to framebuffer memory
In 0.9.45 I added PBO support for use with LockRect/UnlockRect. PBOs provide us with a pointer to DMA memory or video memory (depending on what the implementation prefers). This greatly helps Tiberian Sun and Red Alert II (the games I tested this code with a lot).
There are some other remaining issues (some PBO regressions) but I hope to get those fixed soon. After that I plan to add some more optimizations to the upload/download code (in some cases we have to flip a surface in software which is slow) and I will add an accelerated P8 backend to make C&C1/RedAlert/StarCraft a LOT faster.
If you are interested in using DirectDrawRenderer=opengl also make sure to play with the RenderTargetLockMode (default=readdraw). In case of Tiberian Sun 'readtex' is a lot faster.
Regards, Roderick