debian man page for dtk_update_screen

DTK_UPDATE_SCREEN(3)						Draw Toolkit manual					      DTK_UPDATE_SCREEN(3)

NAME
       dtk_update_screen, dtk_clear_screen, dtk_bgcolor - screen buffer manipulation

SYNOPSIS
       #include <drawtk.h>

       void dtk_update_screen(dtk_hwnd wnd);
       void dtk_clear_screen(dtk_hwnd wnd);
       void dtk_bgcolor(float *bgcolor);

DESCRIPTION
       dtk_bgcolor() set bgcolor as the background color of the current rendering context. bgcolor should point to an array of 4 float correspond-
       ing to an normalized RGBA value. If unspecified, the background color is black.

       dtk_clear_screen() fills the frame buffer with the background color of the window wnd.

       dtk_update_screen() swaps the front and back frame buffers of the window wnd. Rendering is performed through  double  buffering,  i.e.  the
       draws  are  rendered  on  the  back buffer which will be displayed on screen when a call to dtk_update_screen() will be performed. After an
       update, the content of the back buffer is undefined. So if the rendered scene does not rewrite the whole frame buffer, it is safer to  call
       dtk_clear_screen() after an update of the screen.

RETURN VALUE
       These functions return no value.

SEE ALSO

EPFL
								       2010						      DTK_UPDATE_SCREEN(3)