1/*
2 * Copyright (c) 2002-2008 LWJGL Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'LWJGL' nor the names of
17 *   its contributors may be used to endorse or promote products derived
18 *   from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/**
34 * $Id$
35 *
36 * @author elias_naur <elias_naur@users.sourceforge.net>
37 * @author kappaOne <one.kappa@gmail.com>
38 * @version $Revision$
39 */
40
41#import <jni.h>
42#import <OpenGL/CGLCurrent.h>
43#import <OpenGL/CGLTypes.h>
44#import <OpenGL/CGLDevice.h>
45#import <Cocoa/Cocoa.h>
46#import "org_lwjgl_opengl_MacOSXContextImplementation.h"
47#import "context.h"
48#import "common_tools.h"
49
50typedef struct {
51    NSOpenGLContext *context;
52    MacOSXPeerInfo *peer_info;
53} MacOSXContext;
54
55JNIEXPORT jobject JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nCreate
56  (JNIEnv *env, jclass clazz, jobject peer_info_handle, jobject shared_context_handle) {
57	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
58	MacOSXPeerInfo *peer_info;
59	MacOSXContext *shared_context_info;
60	MacOSXContext *context_info;
61    NSOpenGLContext *context;
62    NSOpenGLContext *shared_context = NULL;
63
64	jobject context_handle = newJavaManagedByteBuffer(env, sizeof(MacOSXContext));
65	if (context_handle == NULL) {
66		throwException(env, "Could not create handle buffer");
67		return NULL;
68	}
69	peer_info = (MacOSXPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
70	if (shared_context_handle != NULL) {
71		shared_context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, shared_context_handle);
72        shared_context = shared_context_info->context;
73	}
74    context = [[NSOpenGLContext alloc] initWithFormat:peer_info->pixel_format shareContext:shared_context];
75	if (context == NULL) {
76		throwException(env, "Could not create context");
77		return NULL;
78	}
79
80	if (peer_info->isWindowed) {
81		if (peer_info->window_info->fullscreen) {
82			// set a fixed backbuffer size for fullscreen
83			CGLContextObj cgcontext = (CGLContextObj)[context CGLContextObj];
84			NSSize displaySize = peer_info->window_info->display_rect.size;
85			GLint dim[2] = {displaySize.width, displaySize.height};
86			CGLSetParameter(cgcontext, kCGLCPSurfaceBackingSize, dim);
87			CGLEnable(cgcontext, kCGLCESurfaceBackingSize);
88		}
89		else {
90			// disable any fixed backbuffer size to allow resizing
91			CGLContextObj cgcontext = (CGLContextObj)[context CGLContextObj];
92			CGLDisable(cgcontext, kCGLCESurfaceBackingSize);
93		}
94
95		[peer_info->window_info->view setOpenGLContext:context];
96		peer_info->window_info->context = context;
97	}
98
99	context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
100	context_info->context = context;
101	context_info->peer_info = peer_info;
102
103	[pool release];
104	return context_handle;
105}
106
107JNIEXPORT jlong JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_getCGLShareGroup
108  (JNIEnv *env, jclass clazz, jobject context_handle) {
109	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
110	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
111	CGLContextObj cgl_context = [context_info->context CGLContextObj];
112	CGLShareGroupObj share_group = CGLGetShareGroup(cgl_context);
113	[pool release];
114	return (jlong)share_group;
115}
116
117JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nSwapBuffers
118  (JNIEnv *env, jclass clazz, jobject context_handle) {
119	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
120	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
121	[context_info->context flushBuffer];
122
123	if (context_info->peer_info->isCALayer) {
124		// blit the contents of buffer to CALayer
125		[context_info->peer_info->glLayer blitFrameBuffer];
126	}
127
128    [pool release];
129}
130
131JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nUpdate
132  (JNIEnv *env, jclass clazz, jobject context_handle) {
133	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
134	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
135	[context_info->context update];
136	[pool release];
137}
138
139JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_clearDrawable
140(JNIEnv *env, jclass clazz, jobject context_handle) {
141	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
142	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
143	[context_info->context clearDrawable];
144	[pool release];
145}
146
147JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nReleaseCurrentContext
148  (JNIEnv *env, jclass clazz) {
149	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
150    [NSOpenGLContext clearCurrentContext];
151	[pool release];
152}
153
154JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_setView
155	(JNIEnv *env, jclass clazz, jobject peer_info_handle, jobject context_handle) {
156	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
157	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
158	MacOSXPeerInfo *peer_info = (MacOSXPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
159
160	if (peer_info->isWindowed) {
161		if (peer_info->isCALayer && [context_info->context view] != peer_info->window_info->view) {
162			// mark glViewport to be set manually when setting a new context view
163			peer_info->glLayer->setViewport = YES;
164		}
165
166		[context_info->context setView: peer_info->window_info->view];
167	}
168	else {
169		[context_info->context setPixelBuffer:peer_info->pbuffer cubeMapFace:0 mipMapLevel:0 currentVirtualScreen:0];
170	}
171
172	if (peer_info->isCALayer) {
173		// if using a CALayer, attach it to AWT Canvas and create a shared opengl context with current context
174		[peer_info->glLayer performSelectorOnMainThread:@selector(attachLayer) withObject:nil waitUntilDone:NO];
175	}
176
177	[pool release];
178}
179
180JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nMakeCurrent
181  (JNIEnv *env, jclass clazz, jobject context_handle) {
182	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
183    MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
184	[context_info->context makeCurrentContext];
185
186	if (context_info->peer_info->isCALayer && context_info->peer_info->glLayer->setViewport) {
187		context_info->peer_info->glLayer->setViewport = NO;
188		glViewport(0, 0, [context_info->peer_info->glLayer getWidth], [context_info->peer_info->glLayer getHeight]);
189	}
190
191	[pool release];
192}
193
194JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nIsCurrent
195  (JNIEnv *env, jclass clazz, jobject context_handle) {
196	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
197    MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
198	bool result = context_info->context == [NSOpenGLContext currentContext];
199	[pool release];
200	return result ? JNI_TRUE : JNI_FALSE;
201}
202
203JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nSetSwapInterval
204  (JNIEnv *env, jclass clazz, jobject context_handle, jint int_value) {
205	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
206	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
207	GLint value = int_value;
208	[context_info->context setValues:&value forParameter:NSOpenGLCPSwapInterval];
209	[pool release];
210}
211
212JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nDestroy
213  (JNIEnv *env, jclass clazz, jobject context_handle) {
214	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
215
216	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
217
218	if (context_info->peer_info->isCALayer) {
219		context_info->peer_info->isCALayer = false;
220		[context_info->peer_info->glLayer performSelectorOnMainThread:@selector(removeLayer) withObject:nil waitUntilDone:YES];
221		[context_info->peer_info->glLayer release];
222		context_info->peer_info->glLayer = nil;
223        // don't release context due to nvidia driver bug when releasing shared contexts
224        [context_info->context retain];
225	}
226
227	[context_info->context clearDrawable];
228
229	if (context_info->peer_info->isWindowed) {
230        [context_info->peer_info->window_info->view setOpenGLContext:nil];
231		[context_info->context release];
232		context_info->context = nil;
233		context_info->peer_info->window_info->context = nil;
234	}
235    else {
236        // don't release context due to nvidia driver bug when releasing shared contexts
237        //[context_info->context release];
238		//context_info->context = nil;
239    }
240
241	[pool release];
242}
243