WebGLProgram

Constructor for the GLSL program sent to vertex and fragment shaders, including default uniforms and attributes.

Built-in uniforms and attributes

Vertex shader (unconditional):


    // = object.matrixWorld
    uniform mat4 modelMatrix;

    // = camera.matrixWorldInverse * object.matrixWorld
    uniform mat4 modelViewMatrix;

    // = camera.projectionMatrix
    uniform mat4 projectionMatrix;

    // = camera.matrixWorldInverse
    uniform mat4 viewMatrix;

    // = inverse transpose of modelViewMatrix
    uniform mat3 normalMatrix;

    // = camera position in world space
    uniform vec3 cameraPosition;


    // default vertex attributes provided by Geometry and BufferGeometry
    attribute vec3 position;
    attribute vec3 normal;
    attribute vec2 uv;

Note that you can therefore calculate the position of a vertex in the vertex shader by: gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0); or alternatively gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(position, 1.0);

Vertex shader (conditional):


    #ifdef USE_COLOR
      // vertex color attribute
      attribute vec3 color;
    #endif


    #ifdef USE_MORPHTARGETS

      attribute vec3 morphTarget0;
      attribute vec3 morphTarget1;
      attribute vec3 morphTarget2;
      attribute vec3 morphTarget3;
      attribute vec3 morphTarget4;
      attribute vec3 morphTarget5;

      #ifdef USE_MORPHNORMALS

        attribute vec3 morphNormal0;
        attribute vec3 morphNormal1;
        attribute vec3 morphNormal2;
        attribute vec3 morphNormal3;
        attribute vec3 morphNormal4;
        attribute vec3 morphNormal5;

      #else

        attribute vec3 morphTarget6;
        attribute vec3 morphTarget7;
        attribute vec3 morphTarget8;
        attribute vec3 morphTarget9;
        attribute vec3 morphTarget10;
        attribute vec3 morphTarget11;

      #endif
    #endif


    #ifdef USE_SKINNING
      attribute vec4 skinIndex;
      attribute vec4 skinWeight;
    #endif

Fragment shader:


    uniform mat4 viewMatrix;
    uniform vec3 cameraPosition;

Constructor

WebGLProgram(renderer : WebGLRenderer, code : Object, material : Material, parameters : Object)

For parameters see WebGLRenderer

Properties

# .id : String

# .code : String

# .usedTimes : Integer

# .program : Object

# .vertexShader : WebGLShader

# .fragmentShader : WebGLShader

Methods

# .getUniforms () : Object

Returns a name-value mapping of all active uniform locations.

# .getAttributes () : Object

Returns a name-value mapping of all active vertex attribute locations.

Source

For more info on how to obtain the source code of this module see this page.

Last updated on Tue Dec 01 2020