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Bookmark or Share- What are screen space derivatives and when would I use them?But as Maximus Minimus mentions in a comment above, when you're distorting your texture lookups, you might need to manually retrieve and/or massage the screenspace derivatives to use, to help the hardware select the appropriate filtering (eg. via tex2Dlod in HLSL).
- What are some good resources for learning HLSL? [closed]Cg is not technically HLSL, but syntactically they are virtually identical. Having said that, it's an older book, but NVIDIA has made "The Cg Tutorial" free to read online. It covers the basics of the programmable pipeline in a very comprehensive fashion, and it should all translate to HLSL with minimal effort.
- Inverting matrix in HLSL - Game Development Stack Exchange7. HLSL does not provide a function for invert but it does provide for transpose. So if your matrix is orthogonal you can just use transpose. Also if you have scaling and is uniform you won't need the inverse transpose matrix. You can just use the world matrix to rotate your normal and then normalize it.
- What are the pros and cons of HLSL vs GLSL vs cg? [closed]In Cg, NVIDIA did an excellent job in creating a very clean shader syntax. Its very similar to HLSL. But, tie-together with D3D9/D3D11 (init code, shader compilation code) is much cleaner on HLSL than Cg. -1 Cg. Cg has a nasty bit of start up code that you don't even need to have for HLSL over D3D.
- What are registers in HLSL for? - Game Development Stack Exchange0. Registers are a type of storage that is located on a processor, and accessible very rapidly. They are typically substantially smaller, and are used as input and output locations for processor instructions. HLSL provides a method for mapping up data to these registers from the CPU side, to be used within your shader on the GPU.
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