   GeforceFX texture format
  Before I bought my geforce fx I read a lot of articles describing the gefrcefx''s possibilities, it was supposed to support 128bit textures and high precision depth mapping (shadow buffers). But when I look at my d3d device caps I do not see any support for those texture types.. It seem to only support basic 16 or 32 bits texture... my old demo that used shadow mapping worked really well on a geforce 3 or 4 but is not working anymore on my fx... What a deception... 500$ and months of work down the toilet... I feel like I''ve been cheated by nVidia and unleast I''m wrong it is probably the last nvidia I bough.Please somebody, teel me that I''m an idiot and I simply did not found out how to unlock the features...see: http://www.neoseeker.com/Articles/Hardware/Previews/geforcefx/3.html 
  Youre an idiot.No, of course not.but I bet those 16 and 32 bits are per component.four components gives you 64/128 bit.but hey, i''m an opengl guy, so I am just guessing. ;  If I remember correctly, someone posted about this a few months ago.  nVidia didn''t participate in the DirectX9 group.  As a result they managed to make their card not entirely compatible with DX9.  They do support 128 bit color on the card, but it doesn''t match what D3D wants, so the functionality isn''t exposed right now.  nVidia are working on some kind of solution.No idea how accurate any of this is... just what I remember from forum posts. ;This seems to sum it up nicely. ;  Hehehe..I hope to be an idiot... Those are the format I would like to use...D3DFMT_R32FD3DFMT_G32R32FD3DFMT_A32B32G32R32F(I''m not sure but I think think nvidia created opengl extensions to support such formats);  Yes, nVIDIA does expose floating point textures through OpenGL. But if you wan''t to work with DirectX, you''re outta luck. nVIDIA will probably introduce floating point texture support, but I don''t think it will be anytime soon. 