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Fix the false decode implementation using the ImageRenderer instead of directly create CGContext

This commit is contained in:
DreamPiggy 2022-03-15 17:54:44 +08:00
parent 0228390699
commit 51d1b50ef4
1 changed files with 13 additions and 7 deletions
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20
SDWebImage/Core/SDImageCoderHelper.m
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@ -15,6 +15,7 @@
#import "SDAssociatedObject.h"
#import "UIImage+Metadata.h"
#import "SDInternalMacros.h"
#import "SDGraphicsImageRenderer.h"
#import <Accelerate/Accelerate.h>
static inline size_t SDByteAlign(size_t size, size_t alignment) {
@ -337,16 +338,21 @@ static const CGFloat kDestSeemOverlap = 2.0f; // the numbers of pixels to over
return image;
}
CGImageRef imageRef = [self CGImageCreateDecoded:image.CGImage];
CGImageRef imageRef = image.CGImage;
if (!imageRef) {
return image;
}
#if SD_MAC
UIImage *decodedImage = [[UIImage alloc] initWithCGImage:imageRef scale:image.scale orientation:kCGImagePropertyOrientationUp];
#else
UIImage *decodedImage = [[UIImage alloc] initWithCGImage:imageRef scale:image.scale orientation:image.imageOrientation];
#endif
CGImageRelease(imageRef);
BOOL hasAlpha = [self CGImageContainsAlpha:imageRef];
// Prefer to use new Image Renderer to re-draw image, instead of low-level CGBitmapContext and CGContextDrawImage
// This can keep both OS compatible and don't fight with Apple's performance optimization
SDGraphicsImageRendererFormat *format = [[SDGraphicsImageRendererFormat alloc] init];
format.opaque = !hasAlpha;
format.scale = image.scale;
CGSize imageSize = image.size;
SDGraphicsImageRenderer *renderer = [[SDGraphicsImageRenderer alloc] initWithSize:imageSize format:format];
UIImage *decodedImage = [renderer imageWithActions:^(CGContextRef _Nonnull context) {
[image drawInRect:CGRectMake(0, 0, imageSize.width, imageSize.height)];
}];
SDImageCopyAssociatedObject(image, decodedImage);
decodedImage.sd_isDecoded = YES;
return decodedImage;