I tested Double Fine Studios games. I think they all use Buddha engine.
Stacking (GOG), The Cave (Steam) and Costume Quest (GOG) all give a popup error message that says that Pixel Shader 3.0 is required. 😢
The special thing about these games is that they have builtin SSAA support. You have to run the game executables with -ssaa2x or -ssaa4x command line argument to enable SSAA. The Cave's SSAA can also be enabled through the ingame settings menu.
Dege, can you reverse engineer the SSAA implementation in these games and implement SSAA as an option into dgVoodoo? SSAA truly looks awesome in these games. I hope we can port that awesomeness into other games through the magic of dgVoodoo.
I also tested Psychonauts Demo and Psychonauts Full Version GOG using dgVoodoo WIP53. Both Psychonauts versions crash on my pc when Fast Vid mem access is enabled. Without Fast Vid mem, they work but I get texture flickering. Texture flickering is obvious outside at the beginning of the game (right after the dream cutscene, wooden path to the classroom/obstacle course). There is no SSAA option in Psychonauts.
ZellSF, I know that you tested Psychonauts previously and got a crash during profile creation. Did you test WIP53 and got texture flickering like I did? Does Fast vid mem access works for you in this game? Just test the demo when you have the time. I got the same issues both in the demo and the gog version.