When you have loops with a low average but high peak number of iterations, or a common short branch and a rare long one, unrolling those might be prohibitive. Shaders that need dynamic flow control to run efficiently. Those are almost impossible to emulate efficiently, and since NV3x is often too slow, these shaders really need a PS3.0 card. Shaders that take advantage of the gradient instructions that are available with PS2_a (GeForce FX) and PS3.0. Thanks in advance.Ĭlick to expand.There are different kinds of complex shaders that can take advantage of SM3.0: If the Shader Model - 3.0 isn't really necessary then why Nvidia introduced it on GeForce6 series boards almost year back?Īnd if it was necessary then why ATI didn't made SM3.0 compliant hardware? Also, if all shader 3.0 effects can be displayed by shader 2.0b hardware then is the X800 series still a good buy?, considering Nvidia with GeForce6 series already supports Shader Model 3.GS appears faster than X800XL with low price and supports Shader Model 3.0, and games are now taking complete advantage of Shader Model-3.0 Is the Shader Model 3.0 significant better than Shader Model 2.0b as far as Image quality is concerned and gaming is concerned?, from what I gather that, long shader programs effects (10-20 Instructions long or even more) can be displayed by Shader Model 2.0/2.0b hardware, but performance may decrease. I have a question, and I cannot able to find precise information I want over web, the question is as below:
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