gfx-card & performance testing

2 files changed, 59 insertions, 6 deletions

diff --git a/libs/canvas/canvas.cc b/libs/canvas/canvas.cc
index 72acbd4021..7f9c8fab59 100644
--- a/libs/canvas/canvas.cc
+++ b/libs/canvas/canvas.cc
@@ -18,6 +18,10 @@
 
 */
 
+#if !defined USE_CAIRO_IMAGE_SURFACE && !defined NDEBUG
+#define OPTIONAL_CAIRO_IMAGE_SURFACE
+#endif
+
 /** @file  canvas/canvas.cc
  *  @brief Implementation of the main canvas classes.
  */
@@ -754,12 +758,18 @@ void
 GtkCanvas::on_size_allocate (Gtk::Allocation& a)
 {
 	EventBox::on_size_allocate (a);
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+#endif
+#if defined USE_CAIRO_IMAGE_SURFACE || defined OPTIONAL_CAIRO_IMAGE_SURFACE
 	/* allocate an image surface as large as the canvas itself */
 
 	canvas_image.clear ();
 	canvas_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, a.get_width(), a.get_height());
 #endif
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	}
+#endif
 }
 
 /** Handler for GDK expose events.
@@ -769,7 +779,19 @@ GtkCanvas::on_size_allocate (Gtk::Allocation& a)
 bool
 GtkCanvas::on_expose_event (GdkEventExpose* ev)
 {
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	Cairo::RefPtr<Cairo::Context> draw_context;
+	Cairo::RefPtr<Cairo::Context> window_context;
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+		if (!canvas_image) {
+			canvas_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
+		}
+		draw_context = Cairo::Context::create (canvas_image);
+		window_context = get_window()->create_cairo_context ();
+	} else {
+		draw_context = get_window()->create_cairo_context ();
+	}
+#elif defined USE_CAIRO_IMAGE_SURFACE
 	if (!canvas_image) {
 		canvas_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
 	}
@@ -803,7 +825,10 @@ GtkCanvas::on_expose_event (GdkEventExpose* ev)
 			g_free (rects);
 		}
 		
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+#endif
+#if defined USE_CAIRO_IMAGE_SURFACE || defined OPTIONAL_CAIRO_IMAGE_SURFACE
 	/* now blit our private surface back to the GDK one */
 
 	window_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
@@ -812,6 +837,9 @@ GtkCanvas::on_expose_event (GdkEventExpose* ev)
 	window_context->set_operator (Cairo::OPERATOR_SOURCE);
 	window_context->paint ();
 #endif
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	}
+#endif
 
 	return true;
 }
diff --git a/libs/gtkmm2ext/cairo_widget.cc b/libs/gtkmm2ext/cairo_widget.cc
index 98c7a307ca..2ffb2b47f3 100644
--- a/libs/gtkmm2ext/cairo_widget.cc
+++ b/libs/gtkmm2ext/cairo_widget.cc
@@ -16,6 +16,9 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 */
+#if !defined USE_CAIRO_IMAGE_SURFACE && !defined NDEBUG
+#define OPTIONAL_CAIRO_IMAGE_SURFACE
+#endif
 
 #include "gtkmm2ext/cairo_widget.h"
 #include "gtkmm2ext/gui_thread.h"
@@ -65,7 +68,17 @@ CairoWidget::on_button_press_event (GdkEventButton*)
 bool
 CairoWidget::on_expose_event (GdkEventExpose *ev)
 {
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	Cairo::RefPtr<Cairo::Context> cr;
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+		if (!image_surface) {
+			image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
+		}
+		cr = Cairo::Context::create (image_surface);
+	} else {
+		cr = get_window()->create_cairo_context ();
+	}
+#elif defined USE_CAIRO_IMAGE_SURFACE
 
 	if (!image_surface) {
 		image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
@@ -95,7 +108,10 @@ CairoWidget::on_expose_event (GdkEventExpose *ev)
 
 	render (cr->cobj(), &expose_area);
 
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+#endif
+#if defined USE_CAIRO_IMAGE_SURFACE || defined OPTIONAL_CAIRO_IMAGE_SURFACE
 	image_surface->flush();
 	/* now blit our private surface back to the GDK one */
 
@@ -107,6 +123,9 @@ CairoWidget::on_expose_event (GdkEventExpose *ev)
 	cairo_context->set_operator (Cairo::OPERATOR_SOURCE);
 	cairo_context->paint ();
 #endif
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	}
+#endif
 
 	return true;
 }
@@ -130,9 +149,15 @@ CairoWidget::on_size_allocate (Gtk::Allocation& alloc)
 {
 	Gtk::EventBox::on_size_allocate (alloc);
 
-#ifdef USE_CAIRO_IMAGE_SURFACE
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	if (getenv("ARDOUR_IMAGE_SURFACE")) {
+#endif
+#if defined USE_CAIRO_IMAGE_SURFACE || defined OPTIONAL_CAIRO_IMAGE_SURFACE
 	image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, alloc.get_width(), alloc.get_height());
 #endif
+#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
+	}
+#endif
 
 	set_dirty ();
 }