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doc: doc preset parser differences

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chyyran 2023-02-15 18:50:35 -05:00
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README.md
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@ -97,8 +97,9 @@ Please report an issue if you run into a shader that works in RetroArch, but not
* HDR10 support is not part of any shader runtime and is not supported by librashader.
* For performance reasons, mipmaps are never generated for the input texture. In theory, this means that
presets with `mipmap_input0 = "true"` will not get a mipmapped input. In practice, no known shader presets set
`mipmap_input0 = "true"`.
`mipmap_input0 = "true"`.
* The preset parser is a substantially stricter implementation that the one in RetroArch. Not all shader presets may be
compatible. If you find this is the case, please file an issue so a workaround can be added.
### Runtime specific differences
* OpenGL
* Copying of in-flight framebuffer contents to history is done via `glBlitFramebuffer` rather than drawing a quad into an intermediate FBO.