Changes over r5.6_dev2_fix1:
Changed the underlying tonemapping function with a Lottes-based custom tonemap
The main improvement with the new tonemap is colors looking softer especially in bright conditions,
A lot of light and atmosphere colors have been tweaked to work better with the new tonemap,
More tonemap settings are planned for the next development version,
Changed Reimagined cloud distribution to use a cloud map based on Vibrant Visuals clouds,
Significantly increased cloud distance for both Reimagined and Unbound cloud styles.
Changes to World-Space Reflections:
Fixed blocks in reflections having textures cut off in half in some cases,
Fixed cherry slabs and stairs being missing from reflections,
Fixed a compile error when World-Space Reflections are enabled while a bunch of other settings are disabled,
Increased blocklight brightness on particles,
Removed material reflection texture darkening,
"Half Resolution Reflections" option is now disabled by default,
Fixed blindness fog not working correctly,
Fixed bright reflection glitches on Intel and Apple graphics. Thanks to gri573,
Fixed end dimension colors being stuck at ender dragon fight mode in newer Minecraft versions. Thanks to SpacEagle17,
Fixed reflections in the end dimension having broken colors,
Fixed IntegratedPBR Compatibility Mode option being missing from settings,
Fixed a compile error when setting RP Support to Basic while the IPBR Emissive Mode is previously changed