World Painter

What you will need:

• World Painter - https://www.worldpainter.net/
• MagicaVoxel (Of course 😉 )
• Place the below height.txt in your shader folder

How you do it:

• Build world in world builder
• Export as PNG
• open in paint, save as PNG (Yes even though it was exported as a PNG)
• Change color pallet to grayscale (Very important)
• Drag your saved PNG into MV
• Select the object and change Height to 256
• Select the console at the bottom and type xs height

height.txt shader

// console commands
// 'xs height'

// shader inputs
// uniform vec3 	iVolumeSize;	// volume size [1-126]
// uniform float	iColorIndex;	// current color index [1-255]
// uniform vec3		iMirror;	// current mirror mode [0-1]
// uniform vec3		iAxis;		// current axis mode [0-1]

// uniform float	iFrame;		// current anim frame index
// uniform float 	iNumFrames;	// total num of anim frames

// uniform float 	iIter;		// current iteration index

// uniform vec4		iRand;		// random number
// uniform float	iArgs[8];	// user args

// built-in functions
// float voxel( vec3 v );		// get voxel color index at position v

// generate new voxel color index at position v
float map( vec3 v ) {
	float height = 255.0 - voxel( vec3( v.xy, 0.0 ) ); //depends on palette

	height = height * 0.5f - 1.0; // map to range [0 - 126]

	return ( v.z <= height ? iColorIndex : 0.0 );
}

Guide created by Vhauss