The diffuse maps works as expected, but the shader just ignores vertexColor (and inverseVertexColor) for the bump maps and they still get applied across the whole model. For example: in this material, the grass bump appears everywhere so my dirt path has a grass bump pattern visible in it, which does not look good. textures/darkmod/map_specific/grass4_dirt_01_blend { qer_editorimage textures/darkmod/nature/grass/grass4_ed surftype15 description "grass" { blend diffusemap map tex