glEarlyDepthFuncDMP Function

GL_APICALL void GL_APIENTRY glEarlyDepthFuncDMP(
     GLenum func
);

	Name	Description
in	func	Comparison function

No values are returned.

Specifies the comparison function to use for the early depth test.

Set func to one of the following values.

GL_GEQUAL	Passes when the depth value of the fragment is greater than or equal to the depth value in the early depth buffer.
GL_GREATER	Passes when the depth value of the fragment is greater than the depth value in the early depth buffer.
GL_LEQUAL	Passes when the depth value of the fragment is equal to or less than the depth value in the early depth buffer.
GL_LESS	Passes when the depth value of the fragment is less than the depth value in the early depth buffer.

Early depth tests do not work properly unless you specify the same comparison function here as in glDepthFunc. You must also clear the depth buffer with glClear when you use this function to change the comparison function. You will get incorrect rendering results if you re-render to a single depth buffer while changing the comparison function.

This function generates the following errors.

GL_INVALID_ENUM	The func argument was set to an invalid value.
GL_INVALID_OPERATION	This function was called without any command-list objects bound.

2010/01/07

Initial version.