1 /*
 2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 #ifndef MTLLayer_h_Included
27 #define MTLLayer_h_Included
28 #import <Metal/Metal.h>
29 #import <QuartzCore/CAMetalLayer.h>
30 #import "common.h"
31 
32 #import <JavaNativeFoundation/JavaNativeFoundation.h>
33 
34 @interface MTLLayer : CAMetalLayer
35 {
36 @private
37     JNFWeakJObjectWrapper *javaLayer;
38 
39     // intermediate buffer, used the RQ lock to synchronize
40     MTLContext* ctx;
41     float bufferWidth;
42     float bufferHeight;
43     id<MTLTexture> buffer;
44     id<CAMetalDrawable> mtlDrawable;
45     id<MTLCommandBuffer> blitCommandBuf;
46     id<MTLBlitCommandEncoder> blitEncoder;
47     int topInset;
48     int leftInset;
49 }
50 
51 @property (nonatomic, retain) JNFWeakJObjectWrapper *javaLayer;
52 @property (readwrite, assign) MTLContext* ctx;
53 @property (readwrite, assign) float bufferWidth;
54 @property (readwrite, assign) float bufferHeight;
55 @property (readwrite, assign) id<MTLTexture> buffer;
56 @property (readwrite, assign) id<CAMetalDrawable> mtlDrawable;
57 @property (readwrite, assign) id<MTLCommandBuffer> blitCommandBuf;
58 @property (readwrite, assign) id<MTLBlitCommandEncoder> blitEncoder;
59 @property (readwrite, assign) int topInset;
60 @property (readwrite, assign) int leftInset;
61 
62 - (id) initWithJavaLayer:(JNFWeakJObjectWrapper *)layer;
63 
64 - (void) blitTexture;
65 - (void) fillParallelogramCtxX:(jfloat)x
66                              Y:(jfloat)y
67                            DX1:(jfloat)dx1
68                            DY1:(jfloat)dy1
69                            DX2:(jfloat)dx2
70                            DY2:(jfloat)dy2;
71 - (void) blitCallback;
72 - (void) display;
73 - (void) initBlit;
74 @end
75 
76 #endif /* CGLLayer_h_Included */