Initial terrain editor and support for multiple material blending on terrain by using weightmaps Fix terrain creation using incorrect number of verts Merge branch 'master' of github.com:Facepunch/SandboxGame Add function to edit terrain weightmaps at runtime. Add temp terrain tool to test painting. Merge branch 'master' of github.com:Facepunch/SandboxGame Add function to get terrain weightmap data from a region of a layer Unlock weightmap mip data once finished reading from it Fix weightmap sampling Use dev dirt/grass material blend to test terrain painting