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亲爱的程序员和 OpenGL 黑客们，

我有一个立方体贴图，其中包含 GLKTextureLoader 文档中所写的 6 个纹理。

当使用我的文件路径数组调用[GLKTextureLoader cubeMapWithContentsOfFiles:options:error:]时， GLKTextureInfo返回一个带有关键OpenGL 错误和值1281的错误。

我试过 npot 和 pot 纹理。我正在使用的纹理上传到我的网络空间www.stefanpopp.de/cubemap

这是我当前的代码片段。我已经尝试像往常一样在立方体贴图之前加载单个纹理，并且效果很好。

破码

- (BOOL)loadTextures
{
// make sure EAGL context is active
[EAGLContext setCurrentContext:self.context];

/*
 Array of textures sorted as written in apple documentation
 Right(+x), Left(-x), Top(+y), Bottom(-y), Front(+z), Back(-z).
 Ref: http://developer.apple.com/library/ios/#documentation/GLkit/Reference/GLKTextureLoader_ClassRef/Reference/Reference.html#//apple_ref/occ/clm/GLKTextureLoader/cubeMapWithContentsOfFiles:options:error:
*/

NSArray *texturesArray = @[
[[NSBundle mainBundle] pathForResource:@"Right" ofType:@"png"], // +x
[[NSBundle mainBundle] pathForResource:@"Left" ofType:@"png"],  // -x
[[NSBundle mainBundle] pathForResource:@"Up" ofType:@"png"],    // +y
[[NSBundle mainBundle] pathForResource:@"Down" ofType:@"png"],  // -y
[[NSBundle mainBundle] pathForResource:@"Front" ofType:@"png"], // +z
[[NSBundle mainBundle] pathForResource:@"Back" ofType:@"png"],  // -z
];

NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
                         [NSNumber numberWithBool:YES],
                         GLKTextureLoaderOriginBottomLeft,
                         nil];

NSError *error;
// load cubemap texture with given array of file paths
self.cubemapTexture = [GLKTextureLoader cubeMapWithContentsOfFiles:texturesArray
                                                           options:options
                                                             error:&error];
// if cubemapeTexture is null, loading failed
if (nil == self.cubemapTexture) {
    NSLog(@"Failure reason: %@", error.description);
    NSLog(@"Error code: %i", error.code);
    NSLog(@"Textures: %@", texturesArray);
    NSLog(@"Error: %@", [error description]);
    @throw @"Can not load cubemap textures";
} else {
    NSLog(@"Loaded cubemap textures '%@'\n", self.cubemapTexture);
}
return YES;
}

错误信息输出

ERROR: The operation couldn’t be completed. (GLKTextureLoaderErrorDomain error 8.)
Failure reason: Error Domain=GLKTextureLoaderErrorDomain Code=8 "The operation couldn’t be completed. 
    (GLKTextureLoaderErrorDomain error 8.)" UserInfo=0x886bee0 {
        GLKTextureLoaderGLErrorKey=1281, 
        GLKTextureLoaderErrorKey=OpenGL error
    }

Error code: 8
Error loading cubemap texture (null)
Textures: (
    "/ShortenPATH/Right.png",
    "/ShortenPATH/Left.png",
    "/ShortenPATH/Up.png",
    "/ShortenPATH/Down.png",
    "/ShortenPATH/Front.png",
    "/ShortenPATH/Back.png"
)
Error: Error Domain=GLKTextureLoaderErrorDomain Code=8 
    "The operation couldn’t be completed. 
    (GLKTextureLoaderErrorDomain error 8.)" UserInfo=0x886bee0 {
        GLKTextureLoaderGLErrorKey=1281, GLKTextureLoaderErrorKey=OpenGL error
    }

*** Terminating app due to uncaught exception of class '__NSCFConstantString'
terminate called throwing an exception

提前致谢！

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