发送到顶点着色器和片元着色器的GLSL程序的构造函数，包含默认的变量(uniforms)和属性

内置的变量(uniforms)和属性

顶点着色器(无条件的):


		// = 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 BufferGeometry
		attribute vec3 position;
		attribute vec3 normal;
		attribute vec2 uv;

注意，可以通过以下方式计算顶点着色器中顶点的位置： gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 ); 或者也可以这样： gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4( position, 1.0 );

顶点着色器(有条件的):


		#ifdef USE_TANGENT
			attribute vec4 tangent;
		#endif
		#if defined( USE_COLOR_ALPHA )
			// vertex color attribute with alpha
			attribute vec4 color;
		#elif defined( USE_COLOR )
			// vertex color attribute
			attribute vec3 color;
		#endif


		#ifdef USE_MORPHTARGETS

			attribute vec3 morphTarget0;
			attribute vec3 morphTarget1;
			attribute vec3 morphTarget2;
			attribute vec3 morphTarget3;

			#ifdef USE_MORPHNORMALS

				attribute vec3 morphNormal0;
				attribute vec3 morphNormal1;
				attribute vec3 morphNormal2;
				attribute vec3 morphNormal3;

			#else

				attribute vec3 morphTarget4;
				attribute vec3 morphTarget5;
				attribute vec3 morphTarget6;
				attribute vec3 morphTarget7;

			#endif
		#endif


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

片元着色器:

构造器

[name]( [param:WebGLRenderer renderer], [param:String cacheKey], [param:Object parameters] )

属性

[property:String name]

[property:String id]

[property:String cacheKey]

启用这个 key 之后，能够实现单个 WebGLProgram 不同材料的可重用性。

[property:Integer usedTimes]

[property:Object program]

[property:WebGLShader vertexShader]

[property:WebGLShader fragmentShader]

方法

[method:Object getUniforms]()

[method:Object getAttributes]()

[method:undefined destroy]()

源码

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]