The WebGLRenderingContext.attachShader() method of the WebGL API attaches either a fragment or vertex WebGLShader to a WebGLProgram.
Syntax
void gl.attachShader(program, shader);
Parameters
program- A
WebGLProgram. shader- A fragment or vertex
WebGLShader.
Examples
The following code attaches pre-existing shaders to a WebGLProgram.
var program = gl.createProgram();
// Attach pre-existing shaders
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);
gl.linkProgram(program);
if ( !gl.getProgramParameter( program, gl.LINK_STATUS) ) {
var info = gl.getProgramInfoLog(program);
throw "Could not compile WebGL program. \n\n" + info;
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 1.0 The definition of 'attachShader' in that specification. |
Recommendation | Initial definition. |
| OpenGL ES 2.0 The definition of 'glAttachShader' in that specification. |
Standard | OpenGL man page. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 9 | 4.0 (2.0) | 11 | 12 | 5.1 |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | 25 | (Yes) | ? | 12 | 8.1 |
See also
WebGLProgramWebGLShaderWebGLRenderingContext.attachShader()WebGLRenderingContext.compileShader()WebGLRenderingContext.createProgram()WebGLRenderingContext.createShader()WebGLRenderingContext.deleteProgram()WebGLRenderingContext.deleteShader()WebGLRenderingContext.detachShader()WebGLRenderingContext.getAttachedShaders()WebGLRenderingContext.getProgramParameter()WebGLRenderingContext.getProgramInfoLog()WebGLRenderingContext.getShaderParameter()WebGLRenderingContext.getShaderPrecisionFormat()WebGLRenderingContext.getShaderInfoLog()WebGLRenderingContext.getShaderSource()WebGLRenderingContext.isProgram()WebGLRenderingContext.isShader()WebGLRenderingContext.linkProgram()WebGLRenderingContext.shaderSource()WebGLRenderingContext.useProgram()WebGLRenderingContext.validateProgram()