Experimenting with the Normal map Ninja demo, I attempted to apply it to a cube in my scene using the most recent version of Three.js from the development branch:
// Setting up common material parameters
var ambient = 0x050505, diffuse = 0x331100, specular = 0xffffff, shininess = 10, scale = 23;
// Configuring normal map shader
var shader = THREE.ShaderUtils.lib[ "normal" ];
var uniforms = THREE.UniformsUtils.clone( shader.uniforms );
uniforms[ "enableAO" ].value = true;
uniforms[ "enableDiffuse" ].value = false;
uniforms[ "enableSpecular" ].value = false;
uniforms[ "enableReflection" ].value = true;
uniforms[ "tNormal" ].texture = THREE.ImageUtils.loadTexture( "normal.jpg" );
uniforms[ "tAO" ].texture = THREE.ImageUtils.loadTexture( "ao.jpg" );
uniforms[ "tDisplacement" ].texture = THREE.ImageUtils.loadTexture( "displacement.jpg" );
uniforms[ "uDisplacementBias" ].value = - 0.428408 * scale;
uniforms[ "uDisplacementScale" ].value = 2.436143 * scale;
uniforms[ "uDiffuseColor" ].value.setHex( diffuse );
uniforms[ "uSpecularColor" ].value.setHex( specular );
uniforms[ "uAmbientColor" ].value.setHex( ambient );
uniforms[ "uShininess" ].value = shininess;
uniforms[ "tCube" ].texture = reflectionCube;
uniforms[ "uReflectivity" ].value = 0.1;
uniforms[ "uDiffuseColor" ].value.convertGammaToLinear();
uniforms[ "uSpecularColor" ].value.convertGammaToLinear();
uniforms[ "uAmbientColor" ].value.convertGammaToLinear();
var parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms, lights: true, fog: false };
var displacementMaterial = new THREE.ShaderMaterial( parameters );
/*
var diamond = new THREE.Diamond({
material: bumpmapMaterial
});
*/
var diamond = new THREE.Mesh(
new THREE.CubeGeometry(50, 50, 50),
displacementMaterial
);
Upon testing, I encountered a WebGL error in Chrome:
GL_INVALID_OPERATION : glDrawXXX: attempt to access out of range vertices
In Firefox, no error was displayed but the cube did not appear either.
Using a simple colored MeshLambertMaterial, everything worked as expected. It seems there is a conflict with the ShaderMaterial. Upgrading to the latest Three.js version from the MASTER branch did not resolve the issue - the same error persisted.
If you have any insights on why this might be happening and how to troubleshoot it, please let me know.