The WebGLRenderingContext.getShaderSource() method of the WebGL API returns the source code of a WebGLShader as a string.
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WebGLRenderingContext: getShaderSource() method
Syntax
js
getShaderSource(shader)
Parameters
- 
     shader
- 
     A WebGLShaderobject to get the source code from.
Return value
A string containing the source code of the shader.
Examples
js
const shader = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(shader, originalSource);
const source = gl.getShaderSource(shader);
Specifications
| Specification | 
|---|
| WebGL Specification # 5.14.9 | 
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
| getShaderSource | 9 | 12 | 4 | 11 | 12 | 5.1 | 4.4.3 | 25 | 4 | 12 | 8 | 1.5 | 
See also
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 https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getShaderSource