WebGLRenderingContext.validateProgram() - Web APIs 编辑

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

Syntax

void gl.validateProgram(program);

Parameters

program

A WebGLProgram to validate.

Return value

None.

Examples

var 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) ) {
  var info = gl.getProgramInfoLog(program);
  throw 'Could not compile WebGL program. \n\n' + info;
}

gl.useProgram(program);

Specifications

Browser compatibility

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See also

• WebGLRenderingContext.createProgram()
• WebGLRenderingContext.deleteProgram()
• WebGLRenderingContext.isProgram()
• WebGLRenderingContext.linkProgram()
• WebGLRenderingContext.useProgram()
• WebGLRenderingContext.getProgramParameter()
• WebGLRenderingContext.getProgramInfoLog()