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Talk:High-Level Shader Language

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Shader Model 4.0 info?

Could some info on Shader Model 4 be added, please?

I found some here: http://www.atomicmpc.com.au/forums.asp?s=2&c=7&t=10239&p=0. Interestingly, this info is not in Microsoft's own DirectX SDK help files - annoying.

GLSL comparison info?

Where can one find similar info for GLSL and Cg as is provided in the two tables in this article ? —The preceding unsigned comment was added by 88.85.52.191 (talk) 17:19, 1 January 2007 (UTC).[reply]

>= 256

at some places there is a specification of ">= 256" which makes no sense to me. it should be "<=256". maybe it would be even better to be able to express the same without <>= just by using max (or min?) in the specs?

Actually, ≥ 256 is correct. This shows up here http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/directx9_c/directx/graphics/reference/Shaders/VertexShader3_0/Registers/Registers.asp in a footnote, "256 is the minimum c# register count required by vs_2_x. The MaxVertexShaderConst cap contains the actual c# register count supported by the device"

It also shows up here: ftp://download.nvidia.com/developer/presentations/2004/GPU_Jackpot/Shader_Model_3.pdf