diff options
Diffstat (limited to 'gdk/wayland/gdkglcontext-wayland.c')
-rw-r--r-- | gdk/wayland/gdkglcontext-wayland.c | 67 |
1 files changed, 46 insertions, 21 deletions
diff --git a/gdk/wayland/gdkglcontext-wayland.c b/gdk/wayland/gdkglcontext-wayland.c index 42ba97c9e0..991273c19c 100644 --- a/gdk/wayland/gdkglcontext-wayland.c +++ b/gdk/wayland/gdkglcontext-wayland.c @@ -37,26 +37,6 @@ G_DEFINE_TYPE (GdkWaylandGLContext, gdk_wayland_gl_context, GDK_TYPE_GL_CONTEXT) static void gdk_wayland_gl_context_dispose (GObject *gobject); -static void -gdk_wayland_gl_context_begin_frame (GdkDrawContext *draw_context, - cairo_region_t *update_area) -{ - GdkGLContext *context = GDK_GL_CONTEXT (draw_context); - GdkWindow *window; - - GDK_DRAW_CONTEXT_CLASS (gdk_wayland_gl_context_parent_class)->begin_frame (draw_context, update_area); - if (gdk_gl_context_get_shared_context (context)) - return; - - /* If nothing else is known, repaint everything so that the back - buffer is fully up-to-date for the swapbuffer */ - window = gdk_gl_context_get_window (context); - cairo_region_union_rectangle (update_area, &(GdkRectangle) { - 0, 0, - gdk_window_get_width (window), - gdk_window_get_height (window) }); -} - #define N_EGL_ATTRS 16 static gboolean @@ -175,6 +155,51 @@ gdk_wayland_gl_context_realize (GdkGLContext *context, return TRUE; } +static cairo_region_t * +gdk_wayland_gl_context_get_damage (GdkGLContext *context) +{ + GdkDisplay *display = gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context)); + GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display); + EGLSurface egl_surface; + GdkWindow *window = gdk_draw_context_get_window (GDK_DRAW_CONTEXT (context)); + int buffer_age = 0; + + if (display_wayland->have_egl_buffer_age) + { + GdkGLContext *shared; + GdkWaylandGLContext *shared_wayland; + + shared = gdk_gl_context_get_shared_context (context); + if (shared == NULL) + shared = context; + shared_wayland = GDK_WAYLAND_GL_CONTEXT (shared); + + egl_surface = gdk_wayland_window_get_egl_surface (window->impl_window, + shared_wayland->egl_config); + gdk_gl_context_make_current (shared); + eglQuerySurface (display_wayland->egl_display, egl_surface, + EGL_BUFFER_AGE_EXT, &buffer_age); + + if (buffer_age >= 2) + { + if (window->old_updated_area[0]) + return cairo_region_copy (window->old_updated_area[0]); + } + else if (buffer_age >= 3) + { + if (window->old_updated_area[0] && + window->old_updated_area[1]) + { + cairo_region_t *damage = cairo_region_copy (window->old_updated_area[0]); + cairo_region_union (damage, window->old_updated_area[1]); + return damage; + } + } + } + + return GDK_GL_CONTEXT_CLASS (gdk_wayland_gl_context_parent_class)->get_damage (context); +} + static void gdk_wayland_gl_context_end_frame (GdkDrawContext *draw_context, cairo_region_t *painted, @@ -227,10 +252,10 @@ gdk_wayland_gl_context_class_init (GdkWaylandGLContextClass *klass) gobject_class->dispose = gdk_wayland_gl_context_dispose; - draw_context_class->begin_frame = gdk_wayland_gl_context_begin_frame; draw_context_class->end_frame = gdk_wayland_gl_context_end_frame; context_class->realize = gdk_wayland_gl_context_realize; + context_class->get_damage = gdk_wayland_gl_context_get_damage; } static void |