index.md

title	WebGLRenderingContext: shaderSource() method
short-title	shaderSource()
slug	Web/API/WebGLRenderingContext/shaderSource
page-type	web-api-instance-method
browser-compat	api.WebGLRenderingContext.shaderSource

{{APIRef("WebGL")}}{{AvailableInWorkers}}

The WebGLRenderingContext.shaderSource() method of the WebGL API sets the source code of a {{domxref("WebGLShader")}}.

Syntax

shaderSource(shader, source)

Parameters

• shader
  • : A {{domxref("WebGLShader")}} object in which to set the source code.
• source
  • : A string containing the GLSL source code to set.

Return value

None ({{jsxref("undefined")}}).

Exceptions

• {{jsxref("TypeError")}}
  • : Thrown if the specified shader is not of type WebGLShader.

Examples

const shader = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(shader, originalSource);

const source = gl.getShaderSource(shader);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLRenderingContext.createShader()")}}
• {{domxref("WebGLRenderingContext.isShader()")}}
• {{domxref("WebGLRenderingContext.deleteShader()")}}
• {{domxref("WebGLRenderingContext.getShaderSource()")}}