WebGLRenderingContext: isShader() method

The WebGLRenderingContext.isShader() method of the WebGL API returns true if the passed WebGLShader is valid, false otherwise.

Syntax

isShader(shader)

Parameters

shader

A WebGLShader to check.

Return value

A GLboolean indicating whether or not the shader is valid.

Examples

Checking a shader

const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const shader = gl.createShader(gl.VERTEX_SHADER);

// …

gl.isShader(shader);

Specifications

Browser compatibility

See also

• WebGLRenderingContext.createShader()
• WebGLRenderingContext.deleteShader()