[gtk+] Add gdk_gl_context_has_framebuffer_blit()

[Alexander Larsson <alexl src gnome org>]

commit 21189b9f7e158fe629b0924bf9ca74d66a5a8d76
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Nov 6 12:13:08 2014 +0100

    Add gdk_gl_context_has_framebuffer_blit()
    
    This checks if the context supports GL_EXT_framebuffer_blit

 gdk/gdkglcontext.c        |   11 +++++++++++
 gdk/gdkglcontextprivate.h |   15 ++++++---------
 2 files changed, 17 insertions(+), 9 deletions(-)
---
diff --git a/gdk/gdkglcontext.c b/gdk/gdkglcontext.c
index eef707c..b03c82b 100644
--- a/gdk/gdkglcontext.c
+++ b/gdk/gdkglcontext.c
@@ -86,6 +86,7 @@ typedef struct {
 
   guint realized : 1;
   guint use_texture_rectangle : 1;
+  guint has_gl_framebuffer_blit : 1;
 
   GdkGLContextPaintData *paint_data;
 } GdkGLContextPrivate;
@@ -350,6 +351,14 @@ gdk_gl_context_use_texture_rectangle (GdkGLContext *context)
   return priv->use_texture_rectangle;
 }
 
+gboolean
+gdk_gl_context_has_framebuffer_blit (GdkGLContext *context)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+
+  return priv->has_gl_framebuffer_blit;
+}
+
 static void
 gdk_gl_context_realize (GdkGLContext *context)
 {
@@ -359,6 +368,8 @@ gdk_gl_context_realize (GdkGLContext *context)
   has_npot = epoxy_has_gl_extension ("GL_ARB_texture_non_power_of_two");
   has_texture_rectangle = epoxy_has_gl_extension ("GL_ARB_texture_rectangle");
 
+  priv->has_gl_framebuffer_blit = epoxy_has_gl_extension ("GL_EXT_framebuffer_blit");
+
   if (_gdk_gl_flags & GDK_GL_FLAGS_TEXTURE_RECTANGLE)
     priv->use_texture_rectangle = TRUE;
   else if (has_npot)
diff --git a/gdk/gdkglcontextprivate.h b/gdk/gdkglcontextprivate.h
index ec4ab33..8a88242 100644
--- a/gdk/gdkglcontextprivate.h
+++ b/gdk/gdkglcontextprivate.h
@@ -49,13 +49,6 @@ struct _GdkGLContextClass
                                      cairo_region_t  *region);
 };
 
-gboolean gdk_gl_context_use_texture_rectangle (GdkGLContext *context);
-void            gdk_gl_context_end_frame (GdkGLContext *context,
-                                          cairo_region_t *painted,
-                                          cairo_region_t *damage);
-
-
-
 typedef struct {
   guint vertex_array_object;
   guint tmp_framebuffer;
@@ -72,8 +65,12 @@ typedef struct {
   guint texture_quad_rect_program_map_location;
 } GdkGLContextPaintData;
 
-GdkGLContextPaintData *gdk_gl_context_get_paint_data (GdkGLContext *context);
-
+GdkGLContextPaintData *gdk_gl_context_get_paint_data        (GdkGLContext   *context);
+gboolean               gdk_gl_context_use_texture_rectangle (GdkGLContext   *context);
+gboolean               gdk_gl_context_has_framebuffer_blit  (GdkGLContext   *context);
+void                   gdk_gl_context_end_frame             (GdkGLContext   *context,
+                                                             cairo_region_t *painted,
+                                                             cairo_region_t *damage);
 
 G_END_DECLS