CODEWITHSUNDEEP
three.jswebglshader
Blank Chisui
Blank Chisui

Reputation: 1073

Three Js simple Shader not working

I am trying to run the following simple shader with three.js

mat = new THREE.ShaderMaterial({
  uniforms: {
    color: { type: 'v3', value: new THREE.Color(0xcccccc) }
  },
  vertexShader: 'attribute vec3 vert;\n'
              + 'void main() {\n' 
              + '  gl_Position = vec4(vert, 1.0);\n'
              + '}',
  fragmentShader: 'uniform vec3 color;\n'
                + 'void main() {\n'
                + '  gl_FragColor = vec4(color,1);\n'
                + '}'
})

The shaders compile but the object that has this material is invisible.

This should display the object in a constant light grey color.

When I run this with kick.js shader editor it works as expected.

Predefined materials all work great.

Am I missing something?

Upvotes: 0

Views: 1139

Answers (1)

gaitat
gaitat

Reputation: 12642

Your vertex shader should be:

// Multiply each vertex by the model-view matrix and the projection matrix
// (both provided by Three.js) to get a final vertex position. 
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

Upvotes: 3

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