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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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@ -98,7 +98,8 @@ Please report an issue if you run into a shader that works in RetroArch, but not
* For performance reasons, mipmaps are never generated for the input texture. In theory, this means that * 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 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 ### Runtime specific differences
* OpenGL * OpenGL
* Copying of in-flight framebuffer contents to history is done via `glBlitFramebuffer` rather than drawing a quad into an intermediate FBO. * Copying of in-flight framebuffer contents to history is done via `glBlitFramebuffer` rather than drawing a quad into an intermediate FBO.