Materials

Material files define the different materials your mesh uses. They should use (but don't require) the .mtl file extension. Material files support comments, with the # comment specifier.

Each entry in your material file must have at least the following entries

Keywords	Effect
newmtl	The name of the material Used by the .obj files associated with it
texture, map_Kd	Changes the texture of the material

Below is a full list of the different material flags and their effects:

Keywords	Default	Values	Effect
blend_mode	SOLID	DEFAULT, SOLID, CUTOUT_MIPPED, CUTOUT, TRANSLUCENT	Allows per-material control of the render layer used DEFAULT uses the render layer registered for the block in Java code See the JMX wiki for an in-depth description of each option
emission, emissive	false	bool	Enables or disables the rendering of this material with full brightness
Kd1	1.0 1.0 1.0	float float float	Sets the diffuse color of the material Backwards compatible with the standard .mtl definition
color, diffuse_color1	0xFFFFFF	int	Sets the diffuse color of the material
color_index	true	bool	Enables/disabled the use of diffuse color for this material
tintindex, tint_index		int	Associates the material with a color provider Equivalent to vanilla's tintindex
ambient_occlusion, ambientocclusion ao	true	bool	Enables or disables ambient occlusion Equivalent to vanilla's ambientocclusion
diffuse_shading	true	bool	Enables or disables diffuse lighting
uvlock	false	bool	Enables or disabled uv locking Equivalent to vanilla's uvlock
cull, cullface		DOWN, UP, NORTH, SOUTH, WEST, EAST	Sets the cullface for this material Equivalent to vanilla's cullface

¹ Diffuse colors do not work with item models, and will cause the quads using that material to be invisible.