Rendering Surface 3 GTKGLEXT Library Rendering SurfaceOpenGL rendering surface interface #include <gdk/gdkgl.h> GdkGLDrawable; gboolean gdk_gl_drawable_make_current (GdkGLDrawable *gldrawable, GdkGLContext *glcontext); gboolean gdk_gl_drawable_is_double_buffered (GdkGLDrawable *gldrawable); void gdk_gl_drawable_swap_buffers (GdkGLDrawable *gldrawable); void gdk_gl_drawable_wait_gl (GdkGLDrawable *gldrawable); void gdk_gl_drawable_wait_gdk (GdkGLDrawable *gldrawable); gboolean gdk_gl_drawable_gl_begin (GdkGLDrawable *gldrawable, GdkGLContext *glcontext); void gdk_gl_drawable_gl_end (GdkGLDrawable *gldrawable); GdkGLConfig* gdk_gl_drawable_get_gl_config (GdkGLDrawable *gldrawable); void gdk_gl_drawable_get_size (GdkGLDrawable *gldrawable, gint *width, gint *height); GdkGLDrawable* gdk_gl_drawable_get_current (void); GInterface +----GdkGLDrawable GdkGLDrawabletypedef struct _GdkGLDrawable GdkGLDrawable; gdk_gl_drawable_make_currentgboolean gdk_gl_drawable_make_current (GdkGLDrawable *gldrawable, GdkGLContext *glcontext); Attach an OpenGL rendering context to a gldrawable. gldrawable : a GdkGLDrawable. glcontext : a GdkGLContext. Returns : TRUE if it is successful, FALSE otherwise. gdk_gl_drawable_is_double_bufferedgboolean gdk_gl_drawable_is_double_buffered (GdkGLDrawable *gldrawable); Returns whether the gldrawable supports the double-buffered visual. gldrawable : a GdkGLDrawable. Returns : TRUE if the double-buffered visual is supported, FALSE otherwise. gdk_gl_drawable_swap_buffersvoid gdk_gl_drawable_swap_buffers (GdkGLDrawable *gldrawable); Exchange front and back buffers. gldrawable : a GdkGLDrawable. gdk_gl_drawable_wait_glvoid gdk_gl_drawable_wait_gl (GdkGLDrawable *gldrawable); Complete OpenGL execution prior to subsequent GDK drawing calls. gldrawable : a GdkGLDrawable. gdk_gl_drawable_wait_gdkvoid gdk_gl_drawable_wait_gdk (GdkGLDrawable *gldrawable); Complete GDK drawing execution prior to subsequent OpenGL calls. gldrawable : a GdkGLDrawable. gdk_gl_drawable_gl_begingboolean gdk_gl_drawable_gl_begin (GdkGLDrawable *gldrawable, GdkGLContext *glcontext); Delimits the begining of the OpenGL execution. gldrawable : a GdkGLDrawable. glcontext : a GdkGLContext. Returns : TRUE if it is successful, FALSE otherwise. gdk_gl_drawable_gl_endvoid gdk_gl_drawable_gl_end (GdkGLDrawable *gldrawable); Delimits the end of the OpenGL execution. gldrawable : a GdkGLDrawable. gdk_gl_drawable_get_gl_configGdkGLConfig* gdk_gl_drawable_get_gl_config (GdkGLDrawable *gldrawable); Gets GdkGLConfig with which the gldrawable is configured. gldrawable : a GdkGLDrawable. Returns : the GdkGLConfig. gdk_gl_drawable_get_sizevoid gdk_gl_drawable_get_size (GdkGLDrawable *gldrawable, gint *width, gint *height); Fills *width and *height with the size of GL drawable. width or height can be NULL if you only want the other one. gldrawable : a GdkGLDrawable. width : location to store drawable's width, or NULL. height : location to store drawable's height, or NULL. gdk_gl_drawable_get_currentGdkGLDrawable* gdk_gl_drawable_get_current (void); Returns the current GdkGLDrawable. Returns : the current GdkGLDrawable or NULL if there is no current drawable.