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Merge pull request #2363 from dreampiggy/fix_macOS_transform_alphainfo 

Fix that UIImage+Transform on macOS to use BGRA8888 instead of ARGB8888, as Apple's doc
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DreamPiggy 2018-06-23 23:50:23 +08:00 committed by GitHub
parent 24861d2982 4dbb15712b
commit 9452012ea2
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 4 deletions
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8
SDWebImage/UIImage+Transform.m
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@ -14,14 +14,14 @@
#endif
#if SD_MAC
static CGContextRef SDCGContextCreateARGBBitmapContext(CGSize size, BOOL opaque, CGFloat scale) {
static CGContextRef SDCGContextCreateBitmapContext(CGSize size, BOOL opaque, CGFloat scale) {
size_t width = ceil(size.width * scale);
size_t height = ceil(size.height * scale);
if (width < 1 || height < 1) return NULL;
//pre-multiplied ARGB, 8-bits per component
//pre-multiplied BGRA, 8-bits per component, as Apple's doc
CGColorSpaceRef space = CGColorSpaceCreateDeviceRGB();
CGImageAlphaInfo alphaInfo = (opaque ? kCGImageAlphaNoneSkipFirst : kCGImageAlphaPremultipliedFirst);
CGImageAlphaInfo alphaInfo = kCGBitmapByteOrder32Host | (opaque ? kCGImageAlphaNoneSkipFirst : kCGImageAlphaPremultipliedFirst);
CGContextRef context = CGBitmapContextCreate(NULL, width, height, 8, 0, space, kCGBitmapByteOrderDefault | alphaInfo);
CGColorSpaceRelease(space);
if (!context) {
@ -41,7 +41,7 @@ static void SDGraphicsBeginImageContextWithOptions(CGSize size, BOOL opaque, CGF
#if SD_UIKIT || SD_WATCH
UIGraphicsBeginImageContextWithOptions(size, opaque, scale);
#else
CGContextRef context = SDCGContextCreateARGBBitmapContext(size, opaque, scale);
CGContextRef context = SDCGContextCreateBitmapContext(size, opaque, scale);
if (!context) {
return;
}