| /* |
| * Copyright (C) 2009-2017 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| |
| #if ENABLE(WEBGL) |
| #import "WebGLLayer.h" |
| |
| #import "GraphicsLayer.h" |
| #import "GraphicsLayerCA.h" |
| #import "PlatformCALayer.h" |
| |
| @implementation WebGLLayer |
| |
| - (id)initWithDevicePixelRatio:(float)devicePixelRatio contentsOpaque:(bool)contentsOpaque |
| { |
| self = [super init]; |
| self.transform = CATransform3DIdentity; |
| self.contentsOpaque = contentsOpaque; |
| self.contentsScale = devicePixelRatio; |
| return self; |
| } |
| |
| // When using an IOSurface as layer contents, we need to flip the |
| // layer to take into account that the IOSurface provides content |
| // in Y-up. This means that any incoming transform (unlikely, since |
| // this is a contents layer) and anchor point must add a Y scale of |
| // -1 and make sure the transform happens from the top. |
| |
| - (void)setTransform:(CATransform3D)t |
| { |
| [super setTransform:CATransform3DScale(t, 1, -1, 1)]; |
| } |
| |
| - (void)setAnchorPoint:(CGPoint)p |
| { |
| [super setAnchorPoint:CGPointMake(p.x, 1.0 - p.y)]; |
| } |
| |
| - (void)display |
| { |
| // Show the self.contents as the contents by not doing anything in this function. |
| auto layer = WebCore::PlatformCALayer::platformCALayerForLayer((__bridge void*)self); |
| if (layer && layer->owner()) |
| layer->owner()->platformCALayerLayerDidDisplay(layer.get()); |
| |
| } |
| |
| @end |
| |
| #endif // ENABLE(WEBGL) |