WebGL2RenderingContext: getFragDataLocation() method

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

The WebGL2RenderingContext.getFragDataLocation() method of the WebGL 2 API returns the binding of color numbers to user-defined varying out variables.

Syntax

getFragDataLocation(program, name)

Parameters

• program
  • : A {{domxref("WebGLProgram")}} to query.
• name
  • : A string specifying the name of the user-defined varying out variable.

Return value

A {{domxref("WebGL_API/Types", "GLint")}} indicating the assigned color number binding, or -1 otherwise.

Examples

// program is a linked WebGLProgram

gl.getFragDataLocation(program, "fragColor");

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

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