Prepare NSView/OpenGL Canvas (to speed up rendering on [mac]OS[X]
This avoids Coregraphics (cairo_quartz_surface..) competely. The openGL texture bypasses CG's slow argb_image and CGSColorMask methods.
This commit is contained in:
parent
7d41e542fe
commit
c371fc5115
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@ -44,6 +44,10 @@
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#include "canvas/scroll_group.h"
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#include "canvas/utils.h"
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#ifdef __APPLE__
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#include "canvas/nsglview.h"
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#endif
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using namespace std;
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using namespace ArdourCanvas;
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@ -390,11 +394,18 @@ GtkCanvas::GtkCanvas ()
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, current_tooltip_item (0)
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, tooltip_window (0)
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, _in_dtor (false)
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, _nsglview (0)
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{
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/* these are the events we want to know about */
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add_events (Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::POINTER_MOTION_MASK |
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Gdk::SCROLL_MASK | Gdk::ENTER_NOTIFY_MASK | Gdk::LEAVE_NOTIFY_MASK |
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Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
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#ifdef __APPLE__NotYetToDueGdkForeignViewMousePatch // XXX
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# ifndef __ppc__ // would need to flip RGBA <> RGBA
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_nsglview = nsglview_create (this);
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# endif
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#endif
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}
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void
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@ -755,6 +766,15 @@ GtkCanvas::item_going_away (Item* item, Rect bounding_box)
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}
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void
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GtkCanvas::on_realize ()
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{
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Gtk::EventBox::on_realize();
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#ifdef __APPLE__
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nsglview_overlay (_nsglview, get_window()->gobj());
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#endif
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}
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void
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GtkCanvas::on_size_allocate (Gtk::Allocation& a)
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{
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@ -771,6 +791,18 @@ GtkCanvas::on_size_allocate (Gtk::Allocation& a)
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#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
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}
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#endif
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#ifdef __APPLE__
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if (_nsglview) {
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gint xx, yy;
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gtk_widget_translate_coordinates(
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GTK_WIDGET(gobj()),
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GTK_WIDGET(get_toplevel()->gobj()),
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0, 0, &xx, &yy);
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nsglview_resize (_nsglview, xx, yy, a.get_width(), a.get_height());
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}
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#endif
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}
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/** Handler for GDK expose events.
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@ -783,6 +815,12 @@ GtkCanvas::on_expose_event (GdkEventExpose* ev)
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if (_in_dtor) {
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return true;
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}
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#ifdef __APPLE__
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if (_nsglview) {
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nsglview_queue_draw (_nsglview, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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return true;
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}
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#endif
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#ifdef CANVAS_PROFILE
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const int64_t start = g_get_monotonic_time ();
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@ -1154,7 +1192,7 @@ GtkCanvas::unfocus (Item* item)
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}
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/** @return The visible area of the canvas, in window coordinates */
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Rect
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ArdourCanvas::Rect
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GtkCanvas::visible_area () const
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{
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return Rect (0, 0, get_allocation().get_width (), get_allocation().get_height ());
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@ -215,6 +215,8 @@ public:
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bool on_enter_notify_event (GdkEventCrossing*);
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bool on_leave_notify_event (GdkEventCrossing*);
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void on_realize ();
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bool button_handler (GdkEventButton *);
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bool motion_notify_handler (GdkEventMotion *);
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bool deliver_event (GdkEvent *);
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@ -249,6 +251,8 @@ private:
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bool really_start_tooltip_timeout ();
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bool _in_dtor;
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void* _nsglview;
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};
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/** A GTK::Alignment with a GtkCanvas inside it plus some Gtk::Adjustments for
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@ -0,0 +1,15 @@
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#ifndef __CANVAS_NSGLVIEW_H__
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#define __CANVAS_NSGLVIEW_H__
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#include <gdk/gdk.h>
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namespace ArdourCanvas
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{
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class GtkCanvas;
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void* nsglview_create (GtkCanvas*);
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void nsglview_overlay (void*, GdkWindow*);
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void nsglview_resize (void*, int x, int y, int w, int h);
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void nsglview_queue_draw (void*, int x, int y, int w, int h);
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}
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#endif
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@ -0,0 +1,269 @@
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/*
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Copyright (C) 2011 Paul Davis
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Copyright (C) 2012 David Robillard <http://drobilla.net>
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Copyright (C) 2017 Robin Gareus <robin@gareus.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* include order matter due to apple defines */
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#include <gtkmm/window.h>
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#include "canvas/canvas.h"
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#include "canvas/utils.h"
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#include "canvas/nsglview.h"
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#include <gdk/gdkquartz.h>
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#include <OpenGL/gl.h>
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#import <Cocoa/Cocoa.h>
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__attribute__ ((visibility ("hidden")))
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@interface ArdourCanvasOpenGLView : NSOpenGLView
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{
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@private
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unsigned int _texture_id;
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int _width;
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int _height;
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Cairo::RefPtr<Cairo::ImageSurface> surf;
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ArdourCanvas::GtkCanvas *gtkcanvas;
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}
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- (id) initWithFrame:(NSRect)frame;
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- (void) dealloc;
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- (void) set_ardour_canvas:(ArdourCanvas::GtkCanvas*)c;
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- (void) reshape;
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- (void) drawRect:(NSRect)rect;
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- (BOOL) canBecomeKeyWindow:(id)sender;
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- (BOOL) acceptsFirstResponder:(id)sender;
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@end
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@implementation ArdourCanvasOpenGLView
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- (id) initWithFrame:(NSRect)frame
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{
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NSOpenGLPixelFormatAttribute pixelAttribs[16] = {
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NSOpenGLPFADoubleBuffer,
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NSOpenGLPFAAccelerated,
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NSOpenGLPFAColorSize, 32,
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NSOpenGLPFADepthSize, 32,
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NSOpenGLPFAMultisample,
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NSOpenGLPFASampleBuffers, 1,
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NSOpenGLPFASamples, 4,
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0
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};
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NSOpenGLPixelFormat* pixelFormat =
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[[NSOpenGLPixelFormat alloc] initWithAttributes:pixelAttribs];
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if (pixelFormat) {
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self = [super initWithFrame:frame pixelFormat:pixelFormat];
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[pixelFormat release];
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} else {
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self = [super initWithFrame:frame];
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}
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_texture_id = 0;
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_width = 0;
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_height = 0;
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if (self) {
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[[self openGLContext] makeCurrentContext];
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glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
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glDisable (GL_DEPTH_TEST);
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glEnable (GL_BLEND);
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glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable (GL_TEXTURE_RECTANGLE_ARB);
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[NSOpenGLContext clearCurrentContext];
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[self reshape];
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}
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return self;
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}
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- (void) dealloc {
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[[self openGLContext] makeCurrentContext];
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glDeleteTextures (1, &_texture_id);
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[NSOpenGLContext clearCurrentContext];
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[super dealloc];
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}
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- (void) set_ardour_canvas:(ArdourCanvas::GtkCanvas*)c
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{
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gtkcanvas = c;
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}
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- (BOOL) canBecomeKeyWindow:(id)sender{
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return NO;
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}
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- (BOOL) acceptsFirstResponder:(id)sender{
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return NO;
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}
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- (void) reshape
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{
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[[self openGLContext] update];
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NSRect bounds = [self bounds];
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int width = bounds.size.width;
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int height = bounds.size.height;
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if (_width == width && _height == height) {
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return;
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}
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[[self openGLContext] makeCurrentContext];
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glViewport (0, 0, width, height);
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glMatrixMode (GL_PROJECTION);
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glLoadIdentity ();
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glOrtho (-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f);
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glClear (GL_COLOR_BUFFER_BIT);
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glDeleteTextures (1, &_texture_id);
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glGenTextures (1, &_texture_id);
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glBindTexture (GL_TEXTURE_RECTANGLE_ARB, _texture_id);
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glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
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width, height, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, NULL);
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glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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[NSOpenGLContext clearCurrentContext];
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_width = width;
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_height = height;
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}
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- (void) drawRect:(NSRect)rect
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{
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[[self openGLContext] makeCurrentContext];
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glClear(GL_COLOR_BUFFER_BIT);
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/* call back into GtkCanvas */
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ArdourCanvas::Rect crect (rect.origin.x, rect.origin.y,
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rect.size.width + rect.origin.x,
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rect.size.height + rect.origin.y);
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if (!surf || surf->get_width () != _width || surf->get_height() != _height) {
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surf = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _width, _height);
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crect.x0 = crect.y0 = 0;
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crect.x1 = _width;
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crect.y1 = _height;
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}
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Cairo::RefPtr<Cairo::Context> ctx = Cairo::Context::create (surf);
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// TODO: check retina screen, scaling factor.
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// cairo_surface_get_device_scale () or explicit scale
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ctx->rectangle (crect.x0, crect.y0, crect.width(), crect.height());
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ctx->clip_preserve ();
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/* draw background color */
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ArdourCanvas::set_source_rgba (ctx, gtkcanvas->background_color ());
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ctx->fill ();
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gtkcanvas->render (crect, ctx);
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surf->flush ();
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uint8_t* imgdata = surf->get_data ();
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/* NOTE for big-endian (PPC), we'd need to flip byte-order
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* RGBA <> RGBA for the texture.
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* GtkCanvas does not use this nsview for PPC builds, yet
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*/
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/* continue OpenGL */
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glPushMatrix ();
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _texture_id);
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glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
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_width, _height, /*border*/ 0,
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GL_BGRA, GL_UNSIGNED_BYTE, imgdata);
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glBegin(GL_QUADS);
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glTexCoord2f( 0.0f, (GLfloat) _height);
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glVertex2f(-1.0f, -1.0f);
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glTexCoord2f((GLfloat) _width, (GLfloat) _height);
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glVertex2f( 1.0f, -1.0f);
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glTexCoord2f((GLfloat) _width, 0.0f);
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glVertex2f( 1.0f, 1.0f);
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glTexCoord2f( 0.0f, 0.0f);
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glVertex2f(-1.0f, 1.0f);
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glEnd();
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glDisable(GL_TEXTURE_2D);
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glPopMatrix();
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///
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glFlush();
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glSwapAPPLE();
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[NSOpenGLContext clearCurrentContext];
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}
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@end
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void*
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ArdourCanvas::nsglview_create (GtkCanvas* canvas)
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{
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ArdourCanvasOpenGLView* gl_view = [ArdourCanvasOpenGLView new];
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if (!gl_view) {
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return 0;
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}
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[gl_view set_ardour_canvas:canvas];
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return gl_view;
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}
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void
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ArdourCanvas::nsglview_overlay (void* glv, GdkWindow* window)
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{
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ArdourCanvasOpenGLView* gl_view = (ArdourCanvasOpenGLView*) glv;
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NSView* view = gdk_quartz_window_get_nsview (window);
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[view addSubview:gl_view];
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}
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void
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ArdourCanvas::nsglview_resize (void* glv, int x, int y, int w, int h)
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{
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ArdourCanvasOpenGLView* gl_view = (ArdourCanvasOpenGLView*) glv;
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[gl_view setFrame:NSMakeRect(x, y, w, h)];
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}
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void
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ArdourCanvas::nsglview_queue_draw (void* glv, int x, int y, int w, int h)
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{
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ArdourCanvasOpenGLView* gl_view = (ArdourCanvasOpenGLView*) glv;
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[gl_view setNeedsDisplayInRect:NSMakeRect(x, y, w, h)];
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}
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@ -3,6 +3,7 @@ from waflib.extras import autowaf as autowaf
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from waflib import Options
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from waflib import TaskGen
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import os
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import sys
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# Version of this package (even if built as a child)
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MAJOR = '0'
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@ -96,6 +97,9 @@ def build(bld):
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obj.install_path = bld.env['LIBDIR']
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obj.defines += [ 'PACKAGE="' + I18N_PACKAGE + '"' ]
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if sys.platform == 'darwin':
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obj.source += [ 'nsglview.mm']
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# canvas unit-tests are outdated
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if False and bld.env['BUILD_TESTS'] and bld.is_defined('HAVE_CPPUNIT'):
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unit_testobj = bld(features = 'cxx cxxprogram')
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