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 MTLGraphicsConfig_h_Included

    27 #define MTLGraphicsConfig_h_Included

    28 

    29 #import "jni.h"

    30 #import "MTLSurfaceDataBase.h"

    31 #import "MTLContext.h"

    32 #import <Cocoa/Cocoa.h>

    33 #import <Metal/Metal.h>

    34 

    35 

    36 @interface MTLGraphicsConfigUtil : NSObject {}

    37 + (void) _getMTLConfigInfo: (NSMutableArray *)argValue;

    38 @end

    39 

    40 // REMIND: Using an NSOpenGLPixelBuffer as the scratch surface has been

    41 // problematic thus far (seeing garbage and flickering when switching

    42 // between an NSView and the scratch surface), so the following enables

    43 // an alternate codepath that uses a hidden NSWindow/NSView as the scratch

    44 // surface, for the purposes of making a context current in certain

    45 // situations.  It appears that calling [NSOpenGLContext setView] too

    46 // frequently contributes to the bad behavior, so we should try to avoid

    47 // switching to the scratch surface whenever possible.

    48 

    49 /* Do we need this if we are using all off-screen drawing ? */

    50 #define USE_NSVIEW_FOR_SCRATCH 1

    51 

    52 /* Uncomment to have an additional CAOGLLayer instance tied to

    53  * each instance, which can be used to test remoting the layer

    54  * to an out of process window. The additional layer is needed

    55  * because a layer can only be attached to one context (view/window).

    56  * This is only for testing purposes and can be removed if/when no

    57  * longer needed.

    58  */

    59 

    60 

    61 /**

    62  * The MTLGraphicsConfigInfo structure contains information specific to a

    63  * given CGLGraphicsConfig (pixel format).

    64  *

    65  *     jint screen;

    66  * The screen and PixelFormat for the associated CGLGraphicsConfig.

    67  *

    68  *     NSOpenGLPixelFormat *pixfmt;

    69  * The pixel format of the native NSOpenGL context.

    70  *

    71  *     MTLContext *context;

    72  * The context associated with this CGLGraphicsConfig.

    73  */

    74 typedef struct _MTLGraphicsConfigInfo {

    75     jint                screen;

    76     NSOpenGLPixelFormat *pixfmt;

    77     MTLContext          *context;

    78 } MTLGraphicsConfigInfo;

    79 

    80 #endif /* MTLGraphicsConfig_h_Included */