我正在使用一个GLKTextureLoader
实例来异步加载纹理:
NSDictionary *options = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES]
forKey:GLKTextureLoaderOriginBottomLeft];
GLKTextureLoader *asyncLoader = [[GLKTextureLoader alloc] initWithSharegroup:sharegroup];
[asyncLoader textureWithCGImage:image
options:options
queue:NULL
completionHandler:^(GLKTextureInfo *textureInfo, NSError *outError) {
if (outError) [ISDebugger logError:outError inMethod:_cmd];
GLuint textureName = [textureInfo name];
if (completionHandler) completionHandler(textureName);
}];
第一次运行此代码时,它运行良好。但是第二次,我在控制台中收到malloc: *** error for object 0xa0cb3c0: pointer being freed was not allocated
警告。回溯似乎表明错误发生在GLKTextureLoader
自己的工作线程中:
* thread #16: tid = 0x3003, 0x91a32c91 libsystem_c.dylib`malloc_error_break, stop reason = breakpoint 1.1
frame #0: 0x91a32c91 libsystem_c.dylib`malloc_error_break
frame #1: 0x91a32e07 libsystem_c.dylib`free + 358
frame #2: 0x011f5003 CoreGraphics`image_provider_finalize + 29
frame #3: 0x01b144b3 CoreFoundation`CFRelease + 291
frame #4: 0x0118d96c CoreGraphics`CGImageBlockSetRelease + 76
frame #5: 0x0154646c GLKit`-[GLKTexture dealloc] + 65
frame #6: 0x02184e3d libobjc.A.dylib`_objc_rootRelease + 47
frame #7: 0x01549da0 GLKit`+[GLKTextureLoader commonTextureWithCGImage:options:error:lock:eaglContext:] + 277
frame #8: 0x0154b77e GLKit`__71-[GLKTextureLoader textureWithCGImage:options:queue:completionHandler:]_block_invoke_0 + 140
frame #9: 0x0232b330 libdispatch.dylib`_dispatch_call_block_and_release + 15
frame #10: 0x0232c439 libdispatch.dylib`_dispatch_worker_thread2 + 302
frame #11: 0x919dfb24 libsystem_c.dylib`_pthread_wqthread + 346
显然,纹理加载器似乎过度释放了一些东西。我在这里做错了什么?
更新:
传递给该方法的图像是这样获得的:
NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
NSString *imagePath = [bundlePath stringByAppendingPathComponent:imageFilename];
UIImage *uiImage = [UIImage imageWithContentsOfFile:imagePath];
CGImageRef image = [uiImage CGImage];
将图像生成更改为此阻止了错误的发生:
UIImage *uiImage = [UIImage imageNamed:imageFilename];
CGImageRef image = [uiImage CGImage];
所以现在我想问题是为什么?我知道这+imageNamed:
包括一些缓存行为,但是为什么会影响这段代码呢?
更新 2:
使用创建图像时也是如此[UIImage imageWithData:imageData]
(发生崩溃)。似乎唯一[UIImage imageNamed:imageName]
的工作。任何想法为什么?