223
edits
Changes
Jump to navigation
Jump to search
Add tonemapping section, add reflist
Image adjustment shaders allow you to adjust the color levels of an image, including gamma, luminance, contrast, saturation, and so on, for personal preference, accuracy, or compensating your display. Often, these are used alongside other shaders. There are also [https://github.com/libretro/common-shaders/tree/master/handheld/shaders/color shaders] that simulate the color profiles of specific displays, such as the GBA or DS.
===Tonemapping===
A tonemapping shader allows you to use an external LUT texture to do tonemapping and other color adjustments.<ref name="tonemapping">http://filthypants.blogspot.com/2017/06/retroarch-tone-mapping-lut-shader.html</ref> The LUT texture is PNG image that can be edited in any image editing software to have a desired color adjustment. When the modified LUT is used in the shader, the color adjustment gets applied to the game's video output.
==Shaders on real CRTs==
[https://github.com/libretro/shader-previews Shader preview thumbnail repository]
==References==
{{reflist|2}}
[[Category:FAQs]]
[[Category:Shaders/Filters]]
