Beyond 3D heeft een paar pagina's vol geschreven over het vergelijken van screenshots tussen de Voodoo5 en GeForce2, iets blijkbaar in het geval van de Voodoo5 heel vaak fout wordt gedaan omdat ze 22 bit screenshots zonder ditheren naar 16 bit omzetten:
Well Beyond3D is proud to show you one of the first correct 16 bit 4x AA image taken using a special screen capture mode that 3dfx is placing inside the OpenGL drivers. Ken Dyke from 3dfx wrote some special code in Glide that can go and read from all 4 sample buffers, combine them at full precision (thus getting 22 bits of color), and then gamma correct the image before writing out the .tga file. Using this code, you get to see exactly what you'd see on the screen. Since 3dfx still uses Glide as code base this screen-capture code is available to the OpenGL driver, which can thus capture screen-shots correctly. Unfortunately the drivers that were send out with preview boards did not contain this code and as a result screen captures are incorrect. 3dfx will soon send out new improved drivers together with instructions on how to take correct screenshots. Below you find the V5500 shot suffering from truncation as taken using the old drivers, and also the corrected screenshot taken using the new driver with special screen capture code. Also included for quality comparisons is the 16bit GeForce image.
In short, we can conclude that all the Quake III Arena screenshots (and almost all other screenshots for that matter) out there that aren't being taken by 3dfx are invalid. So websites like Anandtech, Firing Squad, Reverend etc… are showing incorrect screenshots in most of their Voodoo5 articles/reviews/previews thus far - incorrect as in they do not reflect the true on-screen image quality of the 3dfx V5500 boards. All these shots suffer from data truncation, which results in uniformly colored zones in the images and an overall loss of detail due to a truncation of data during the screen capture phase.
Dit verklaard dus ook waarom het artikel van Thresh's Firingsquad niet correct is, iets waar 3dfx wel blij mee is aangezien die toch wel een eer hoog te houden heeft op het gebied van FSAA.
Waar?
ook geen gedoe met et omzetten van 22bits naar 16bits