WebGLRenderingContext: validateProgram() method

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

The WebGLRenderingContext.validateProgram() method of the WebGL API validates a {{domxref("WebGLProgram")}}. It checks if it is successfully linked and if it can be used in the current WebGL state.

Syntax

validateProgram(program)

Parameters

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

Return value

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

Examples

const program = gl.createProgram();

// Attach pre-existing shaders
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);

gl.linkProgram(program);
gl.validateProgram(program);

if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
  const info = gl.getProgramInfoLog(program);
  throw new Error(`Could not compile WebGL program. \n\n${info}`);
}

gl.useProgram(program);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

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