gl.DepthFunc(func)
gl.DepthFunc()
specifies the function used to compare each incoming pixel depth value with the
depth value present in the depth buffer. The comparison is performed only if depth testing is
enabled. (See gl.Enable() and gl.Disable() of #GL_DEPTH_TEST
)
func
specifies the conditions under which the pixel will be drawn. The comparison functions are
as follows:
#GL_NEVER
#GL_LESS
#GL_EQUAL
#GL_LEQUAL
#GL_GREATER
#GL_NOTEQUAL
#GL_GEQUAL
#GL_ALWAYS
The initial value of func is #GL_LESS
. Initially, depth testing is disabled. If depth testing
is disabled or if no depth buffer exists, it is as if the depth test always passes.
Even if the depth buffer exists and the depth mask is non-zero, the depth buffer is not updated if the depth test is disabled.
Please consult an OpenGL reference manual for more information.
#GL_INVALID_ENUM
is generated if func
is not an accepted value.
#GL_INVALID_OPERATION
is generated if gl.DepthFunc()
is executed between the execution of gl.Begin() and the corresponding execution of gl.End()
#GL_DEPTH_FUNC
gl.IsEnabled() with argument #GL_DEPTH_TEST