Chameleon Mod 1.8, 1.7.10, 1.7.2 is a shared code library for Minecraft 1.8 and later.  Although it does not currently provide rendering hooks to restore the 1.7 render pipeline, it does provide a more comprehensive RenderBlocks replacement that is also suited for TESR rendering.

Chameleon is required for Chameleon Mod 1.8, 1.7.10, 1.7.2