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a5c30398df
This adds egl backend support for handling clipped redraws. This uses the EGL_NOK_swap_region extension to enable the EGL backend to present a subregion from the back buffer to the front so we don't always have to redraw the entire stage for small updates.
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
#ifndef __CLUTTER_STAGE_EGL_H__
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#define __CLUTTER_STAGE_EGL_H__
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib-object.h>
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#include <clutter/clutter-stage.h>
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#ifdef COGL_HAS_X11_SUPPORT
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <X11/Xutil.h>
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#include "../x11/clutter-stage-x11.h"
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#endif
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#include "clutter-egl-headers.h"
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#include "clutter-backend-egl.h"
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#define CLUTTER_TYPE_STAGE_EGL (_clutter_stage_egl_get_type ())
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#define CLUTTER_STAGE_EGL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_STAGE_EGL, ClutterStageEGL))
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#define CLUTTER_IS_STAGE_EGL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_STAGE_EGL))
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#define CLUTTER_STAGE_EGL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_STAGE_EGL, ClutterStageEGLClass))
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#define CLUTTER_IS_STAGE_EGL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_STAGE_EGL))
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#define CLUTTER_STAGE_EGL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_STAGE_EGL, ClutterStageEGLClass))
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typedef struct _ClutterStageEGL ClutterStageEGL;
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typedef struct _ClutterStageEGLClass ClutterStageEGLClass;
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struct _ClutterStageEGL
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{
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterStageX11 parent_instance;
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EGLSurface egl_surface;
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#else
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GObject parent_instance;
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/* the stage wrapper */
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ClutterStage *wrapper;
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/* back pointer to the backend */
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ClutterBackendEGL *backend;
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#endif
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/* We only enable clipped redraws after 2 frames, since we've seen
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* a lot of drivers can struggle to get going and may output some
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* junk frames to start with. */
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unsigned long frame_count;
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gboolean initialized_redraw_clip;
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ClutterGeometry bounding_redraw_clip;
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};
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struct _ClutterStageEGLClass
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{
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#ifdef COGL_HAS_X11_SUPPORT
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ClutterStageX11Class parent_class;
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#else
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GObjectClass parent_class;
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#endif
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};
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GType _clutter_stage_egl_get_type (void) G_GNUC_CONST;
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void _clutter_stage_egl_redraw (ClutterStageEGL *stage_egl,
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ClutterStage *stage);
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#endif /* __CLUTTER_STAGE_EGL_H__ */
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