the rar is back in the states y0
ps =/= Playstation...
yes, all the shader models are backwards compatible. You can play any shader model version older then what your card can handle. AKA if you have a PS 4 you can play 1.0, 1.1, 1.2, 2.0, 2.5, 3.0, etc. Oh, and PS3.0 is DirectX9.0C.
H2V will most likely be a pixel shader 3.0 game judging by the fact that it runs on DX9.0C hardware. For the DX10 mode they may bump it to 4 but I dont see much of a reason for them to do it since it probably wont use any DX10 features anyway.
If your graphics card defaults to a lower shader model, yes.
If the game defaults 2.0, and you -use20, you will be forcing what you'd use anyway.
Shader models are simply a specification by Microsoft for which each graphics card manufacture must comply. Generally the major purpose is to add more and more programmability to each chip.
Pixelshaders 3.0 is simply a fix for 2.0. Specification-wise its nearly the same... PS 3.0 is mostly just a lot faster, can handle longer shader code, etc.
We're up to PS 4.0 now with the GeForce 8 series.
And to my knowledge, the released versions of pixelshaders are:
Fixed Function (0)
1.0 (one ATI card to be humped by)
1.1 (nVidia's Pixelshader launch just a month or so after 1.0, instantly obsoleting ATI's option before people even bought the card)
1.4
2.0 (Radeon9 and GeForce FX)
2.0b (RadeonX-series because they just couldn't get PS 3.0 on their cards for whatever reason)
3.0 (GeForce 6/7, Radeon X1+)
4.0 (GeForce 8, next gen Radeon)
The Xbox was somewhere between 1.4 and 2.0, and the 360 somewhere between 2.0 and 3.0 (edit: Typo! I meant 3.0 and 4.0).
Last edited by Phopojijo; April 4th, 2007 at 04:38 PM.
DirectX 10 runs fine on a Model Shader 2 card (the proper name for PS&VS)
If anyone here doesn't know what "Pixel Shader" is, I can show them exactly what it means.
However, it doesn't appear that the -use20 function does anything as Halo is centered around some very specific effects (the proper name for shaders)
Edit: Xbox has Model Shader 2, 360 has Model Shader 3 - Parallax Occlusion ftw!
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