forked from AuroraMiddleware/gtk
de9c9efa6f
This implements the basics for a GdkGLContext on macOS. Currently, rendering only is fully working for the GskCairoRenderer case where we read back pixels into a cairo surface for rendering. More work on synchronization is required for the GL on GskGLRenderer case. When we attempt to render a surface itself with GL, the context will ensure that the new GdkMacosGLView is placed within the NSWindow. In other cases, we use a dummy NSView and NSWindow for backing the NSOpenGLContext to ensure that we can get accelerated drawing. This gets GtkGLArea working when running with GSK_RENDERER=cairo.
125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
/* GdkMacosGLView.c
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*
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* Copyright 2020 Christian Hergert <chergert@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "config.h"
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#include <CoreGraphics/CoreGraphics.h>
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#include <OpenGL/gl.h>
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#include "gdkinternals.h"
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#include "gdkmacossurface-private.h"
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#import "GdkMacosGLView.h"
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@implementation GdkMacosGLView
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS
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-(void)lockFocus
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{
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NSOpenGLContext *context;
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[super lockFocus];
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context = [self openGLContext];
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if ([context view] != self)
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[context setView: self];
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}
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-(void)drawRect:(NSRect)rect
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{
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}
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-(void)clearGLContext
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{
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if (_openGLContext != nil)
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[_openGLContext clearDrawable];
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_openGLContext = nil;
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}
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-(void)setOpenGLContext:(NSOpenGLContext*)context
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{
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if (_openGLContext != context)
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{
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if (_openGLContext != nil)
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[_openGLContext clearDrawable];
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_openGLContext = context;
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if (_openGLContext != nil)
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{
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[_openGLContext setView:self];
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[self setWantsLayer:YES];
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[self.layer setContentsGravity:kCAGravityBottomLeft];
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[_openGLContext update];
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}
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}
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}
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-(NSOpenGLContext *)openGLContext
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{
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return _openGLContext;
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}
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-(BOOL)isOpaque
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{
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return NO;
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}
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-(BOOL)isFlipped
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{
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return YES;
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}
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-(BOOL)acceptsFirstMouse
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{
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return YES;
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}
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-(BOOL)mouseDownCanMoveWindow
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{
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return NO;
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}
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-(void)invalidateRegion:(const cairo_region_t *)region
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{
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if (region != NULL)
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{
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guint n_rects = cairo_region_num_rectangles (region);
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for (guint i = 0; i < n_rects; i++)
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{
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cairo_rectangle_int_t rect;
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NSRect nsrect;
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cairo_region_get_rectangle (region, i, &rect);
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nsrect = NSMakeRect (rect.x, rect.y, rect.width, rect.height);
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[self setNeedsDisplayInRect:nsrect];
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}
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}
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}
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G_GNUC_END_IGNORE_DEPRECATIONS
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@end
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