WebGLRenderingContext: isProgram() method

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

The WebGLRenderingContext.isProgram() method of the WebGL API returns true if the passed {{domxref("WebGLProgram")}} is valid, false otherwise.

Syntax

isProgram(program)

Parameters

• program
  • : A {{domxref("WebGLProgram")}} to check.

Return value

A {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether or not the program is valid.

Examples

Checking a program

const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const program = gl.createProgram();

// …

gl.isProgram(program);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLRenderingContext.createProgram()")}}
• {{domxref("WebGLRenderingContext.deleteProgram()")}}
• {{domxref("WebGLRenderingContext.linkProgram()")}}
• {{domxref("WebGLRenderingContext.useProgram()")}}
• {{domxref("WebGLRenderingContext.validateProgram()")}}
• {{domxref("WebGLRenderingContext.getProgramParameter()")}}
• {{domxref("WebGLRenderingContext.getProgramInfoLog()")}}