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-rwxr-xr-xlibs/cocos2d/CCGrabber.m95
1 files changed, 95 insertions, 0 deletions
diff --git a/libs/cocos2d/CCGrabber.m b/libs/cocos2d/CCGrabber.m new file mode 100755 index 0000000..a259091 --- /dev/null +++ b/libs/cocos2d/CCGrabber.m
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1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2009 On-Core
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 *
24 */
25
26
27#import "Platforms/CCGL.h"
28#import "CCGrabber.h"
29#import "ccMacros.h"
30#import "CCTexture2D.h"
31#import "Support/OpenGL_Internal.h"
32
33@implementation CCGrabber
34
35-(id) init
36{
37 if(( self = [super init] )) {
38 // generate FBO
39 ccglGenFramebuffers(1, &fbo);
40 }
41 return self;
42}
43
44-(void)grab:(CCTexture2D*)texture
45{
46 glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &oldFBO);
47
48 // bind
49 ccglBindFramebuffer(CC_GL_FRAMEBUFFER, fbo);
50
51 // associate texture with FBO
52 ccglFramebufferTexture2D(CC_GL_FRAMEBUFFER, CC_GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.name, 0);
53
54 // check if it worked (probably worth doing :) )
55 GLuint status = ccglCheckFramebufferStatus(CC_GL_FRAMEBUFFER);
56 if (status != CC_GL_FRAMEBUFFER_COMPLETE)
57 [NSException raise:@"Frame Grabber" format:@"Could not attach texture to framebuffer"];
58
59 ccglBindFramebuffer(CC_GL_FRAMEBUFFER, oldFBO);
60}
61
62-(void)beforeRender:(CCTexture2D*)texture
63{
64 glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &oldFBO);
65 ccglBindFramebuffer(CC_GL_FRAMEBUFFER, fbo);
66
67 // BUG XXX: doesn't work with RGB565.
68
69
70 glClearColor(0,0,0,0);
71
72 // BUG #631: To fix #631, uncomment the lines with #631
73 // Warning: But it CCGrabber won't work with 2 effects at the same time
74// glClearColor(0.0f,0.0f,0.0f,1.0f); // #631
75
76 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
77
78// glColorMask(TRUE, TRUE, TRUE, FALSE); // #631
79
80}
81
82-(void)afterRender:(CCTexture2D*)texture
83{
84 ccglBindFramebuffer(CC_GL_FRAMEBUFFER, oldFBO);
85// glColorMask(TRUE, TRUE, TRUE, TRUE); // #631
86}
87
88- (void) dealloc
89{
90 CCLOGINFO(@"cocos2d: deallocing %@", self);
91 ccglDeleteFramebuffers(1, &fbo);
92 [super dealloc];
93}
94
95@end