Gl.PassThrough (gb.opengl)

Static Sub PassThrough ( Token As Float )

Place a marker in the feedback buffer.

Parameters

token: Specifies a marker value to be placed in the feedback buffer following a Gl.PASS_THROUGH_TOKEN.

Description

Feedback is a GL render mode. The mode is selected by calling Gl.RenderMode with Gl.FEEDBACK. When the GL is in feedback mode, no pixels are produced by rasterization. Instead, information about primitives that would have been rasterized is fed back to the application using the GL. See the Gl.FeedbackBuffer reference page for a description of the feedback buffer and the values in it.

Gl.PassThrough inserts a user-defined marker in the feedback buffer when it is executed in feedback mode. token is returned as if it were a primitive; it is indicated with its own unique identifying value: Gl.PASS_THROUGH_TOKEN. The order of Gl.PassThrough commands with respect to the specification of graphics primitives is maintained.

Notes

Gl.PassThrough is ignored if the GL is not in feedback mode.

Errors

Gl.INVALID_OPERATION is generated if Gl.PassThrough is executed between the execution of Gl.Begin and the corresponding execution of Gl.End.

Associated Gets