我刚试着将法线贴图忍者演示应用到我的场景中的一个立方体上,使用了最新的Three.js版本:
// common material parameters
var ambient = 0x050505, diffuse = 0x331100, specular = 0xffffff, shininess = 10, scale = 23;
// 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
);
然而,我在Chrome浏览器中遇到了以下的WebGL错误:
GL_INVALID_OPERATION : glDrawXXX: attempt to access out of range vertices
在Firefox中,我没有收到这样的错误,但是立方体也不会显示。 使用标准颜色的
MeshLambertMaterial
,一切正常。因此,ShaderMaterial
可能存在冲突。如果我使用来自MASTER分支的最新Three.js版本,情况并未改善-仍然出现相同的错误。
有任何想法为什么会这样,并且我需要更改什么才能使其起作用?