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WebGLRenderingContext: depthFunc() method - Web APIs | MDN
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WebGLRenderingContext: depthFunc() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebGLRenderingContext.depthFunc() method of the WebGL API specifies a function that compares
incoming pixel depth to the current depth buffer value.
Syntax
js
depthFunc(func)
Parameters
func-
A
GLenumspecifying the depth comparison function, which sets the conditions under which the pixel will be drawn. The default value isgl.LESS. Possible values are:gl.NEVER(never pass)gl.LESS(pass if the incoming value is less than the depth buffer value)gl.EQUAL(pass if the incoming value equals the depth buffer value)gl.LEQUAL(pass if the incoming value is less than or equal to the depth buffer value)gl.GREATER(pass if the incoming value is greater than the depth buffer value)gl.NOTEQUAL(pass if the incoming value is not equal to the depth buffer value)gl.GEQUAL(pass if the incoming value is greater than or equal to the depth buffer value)gl.ALWAYS(always pass)
Return value
None (undefined).
Examples
The depth testing is disabled by default. To enable or disable depth testing, use the
enable() and
disable() methods with the argument
gl.DEPTH_TEST.
js
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.NEVER);
To check the current depth function, query the DEPTH_FUNC constant.
js
gl.getParameter(gl.DEPTH_FUNC) === gl.NEVER;
// true
Specifications
| Specification |
|---|
| WebGL Specification # 5.14.3 |
Browser compatibility
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