glEndvoid

glEndvoid is a function in the OpenGL graphics library. Its primary purpose is to terminate the execution of rendering commands that were previously initiated. Typically, it is used in conjunction with functions like glBegin, which marks the start of a primitive or a sequence of primitives to be rendered.

When glBegin is called with a specific primitive type, such as GL_TRIANGLES or GL_LINES, it signals to OpenGL that subsequent vertex data should be interpreted as belonging to that primitive type. The application then provides the coordinates and attributes for each vertex. After all vertices for the desired primitives have been supplied, glEndvoid is called to indicate that the current primitive sequence is complete. This allows OpenGL to process and render the accumulated vertex data.

The glEndvoid function does not take any arguments. Its invocation signals a return to a more general state where specific primitive drawing is not actively occurring. It is crucial for correctly defining and rendering geometric shapes. Forgetting to call glEndvoid after glBegin can lead to rendering artifacts or errors, as OpenGL may not finalize the primitive. While deprecated in modern OpenGL, understanding its role is fundamental to grasping the fixed-function pipeline of older OpenGL versions.