Question

从上一个问题来看， CIImage drawing EXC_BAD_ACCESS，我通过告诉CIContext进行软件渲染，学会了解决 CoreImage 问题。我现在正在试图找出当AppKit尝试绘制NSImageView时发生的崩溃，我设置为使用以下代码显示CIImage：

- (void)setCIImage:(CIImage *)processedImage;
{
    NSSize size = [processedImage extent].size;
    if (size.width == 0) {
        [self setImage:nil];
        return;
    }
    NSData * pixelData = [[OMFaceRecognizer defaultRecognizer] imagePlanarFData:processedImage];
    LCDocument * document = [[[self window] windowController] document];
    [[NSNotificationCenter defaultCenter] postNotificationName:LCCapturedImageNotification
                                                        object:document
                                                      userInfo:@{ @"data": pixelData, @"size": [NSValue valueWithSize:size] }];
#if 1
    static dispatch_once_t onceToken;
    static CGColorSpaceRef colorSpace;
    static size_t bytesPerRow;
    dispatch_once(&onceToken, ^ {
        colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericGray);
        bytesPerRow = size.width * sizeof(float);
    });
    // For whatever bizarre reason, CoreGraphics uses big-endian floats (!)
    const float * data = [[[OMFaceRecognizer defaultRecognizer] byteswapPlanarFData:pixelData
                                                                        swapInPlace:NO] bytes];
    CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, data, bytesPerRow * size.height, NULL);
    CGImageRef renderedImage = CGImageCreate(size.width, size.height, 32, 32, bytesPerRow, colorSpace, kCGImageAlphaNone | kCGBitmapFloatComponents, provider, NULL, false, kCGRenderingIntentDefault);
    CGDataProviderRelease(provider);
    NSImage * image = [[NSImage alloc] initWithCGImage:renderedImage
                                                  size:size];
    CGImageRelease(renderedImage);
#else
    NSCIImageRep * rep = [NSCIImageRep imageRepWithCIImage:processedImage];
    NSImage * image = [[NSImage alloc] initWithSize:size];
    [image addRepresentation:rep];
#endif
    [self setImage:image];
}

有没有办法让NSImageView使用软件渲染？我在 IB 中环顾四周，但我没有看到任何看起来很有希望的东西......

NSView可以使用CIImages的软件渲染吗？

0 个答案: