|  |  |  | GtkGLExt Reference Manual |  | 
|---|
| Rendering SurfaceRendering Surface — OpenGL 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);
gboolean 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. | 
gboolean 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. | 
void gdk_gl_drawable_swap_buffers (GdkGLDrawable *gldrawable);
Exchange front and back buffers.
| gldrawable : | a GdkGLDrawable. | 
void gdk_gl_drawable_wait_gl (GdkGLDrawable *gldrawable);
Complete OpenGL execution prior to subsequent GDK drawing calls.
| gldrawable : | a GdkGLDrawable. | 
void gdk_gl_drawable_wait_gdk (GdkGLDrawable *gldrawable);
Complete GDK drawing execution prior to subsequent OpenGL calls.
| gldrawable : | a GdkGLDrawable. | 
gboolean 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. | 
void gdk_gl_drawable_gl_end (GdkGLDrawable *gldrawable);
Delimits the end of the OpenGL execution.
| gldrawable : | a GdkGLDrawable. | 
GdkGLConfig* gdk_gl_drawable_get_gl_config (GdkGLDrawable *gldrawable);
Gets GdkGLConfig with which the gldrawable is configured.
| gldrawable : | a GdkGLDrawable. | 
| Returns : | the GdkGLConfig. | 
void 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. | 
GdkGLDrawable* gdk_gl_drawable_get_current (void);
Returns the current GdkGLDrawable.
| Returns : | the current GdkGLDrawable or NULL if there is no current drawable. | 
| << Rendering Context | OpenGL Pixmap >> |