Question

我只是尝试使用以下代码将Normal map Ninja demo应用于场景中的多维数据集 - 使用dev分支中新的最新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中遇到以下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，但是立方体也不会出现。使用标准颜色MeshLambertMaterial，一切正常。因此，需要与ShaderMaterial发生冲突。如果我使用MASTER分支的最新Three.js版本，它不会改善这种情况 - 发生同样的错误。

知道为什么会出现这种情况以及我需要改变什么以使其正常工作？

Answer 1

尝试添加此内容？

geometry.computeTangents();

Answer 2

<强>更新

return items.map(item => (
  <div key={item.id} onClick={() => addToCartAction(item)}>
    {item.name}
  </div>
));

其中<script src="https://rawgit.com/mrdoob/three.js/dev/examples/js/BufferGeometryUtils.js"></script> THREE.BufferGeometryUtils.computeTangents( geometry )必须编入索引

如何正确制作THREE.js中的法线贴图？

2 个答案: