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- This folder contains special shaders for rendering mimmap-free textures as if they had mipmaps.
- Typically it's better to use mipmaps, but sometimes you only have the texture for one frame and it's cheaper to fake mipmaps in the shader than to generate a new mipmap every frame.
- If you need a shader that's not provided here to work with emulated mipmaps you should be able to follow roughly this procedure:
- - Copy the shader in question to this folder (so it can see our .cginc)
- - You can download a copy of Unity's built-in shaders from https://unity3d.com/get-unity/download/archive
- - Change the shader name so it's in the "Emulated Mipmap" folder
- - Add `#include "./MipSample.cginc"`
- - For every "sampler2D _MyTex" you want to emulate mipmaps on, add a "float4 _MyTex_TexelSize"
- - Unity will magically fill this variable with (texel size x, texel size y, texture size x, texture size y)
- - Replace tex2D() calls with mipSample() calls.
- - For an explanation of how to use mipSample, check out the docblock in MipSample.gcinc
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