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Fix color space handling in SkImage_Gpu::getROPixels

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The dstColorSpace is a badly named parameter. It's a hint about where/how
the returned pixels are going to be used. Raster and GPU are meant to
ignore that information, codecs use it to drive our decoding heuristic.

This is a re-land of https://skia-review.googlesource.com/c/10109/

Bug: skia:
Change-Id: Iee006a8e014e028b4f0f2471d7152b6bccd72cb2
Reviewed-on: https://skia-review.googlesource.com/14404
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
This commit is contained in:
Brian Osman 2017-04-26 16:26:39 -04:00 committed by Skia Commit-Bot
parent 56de05fec3
commit 6251771ebc
1 changed files with 9 additions and 9 deletions
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18
src/image/SkImage_Gpu.cpp
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@ -63,11 +63,13 @@ SkImageInfo SkImage_Gpu::onImageInfo() const {
return SkImageInfo::Make(fProxy->width(), fProxy->height(), ct, fAlphaType, fColorSpace);
}
static SkImageInfo make_info(int w, int h, SkAlphaType at, sk_sp<SkColorSpace> colorSpace) {
return SkImageInfo::MakeN32(w, h, at, std::move(colorSpace));
}
bool SkImage_Gpu::getROPixels(SkBitmap* dst, SkColorSpace* dstColorSpace, CachingHint chint) const {
bool SkImage_Gpu::getROPixels(SkBitmap* dst, SkColorSpace*, CachingHint chint) const {
// The SkColorSpace parameter "dstColorSpace" is really just a hint about how/where the bitmap
// will be used. The client doesn't expect that we convert to that color space, it's intended
// for codec-backed images, to drive our decoding heuristic. In theory we *could* read directly
// into that color space (to save the client some effort in whatever they're about to do), but
// that would make our use of the bitmap cache incorrect (or much less efficient, assuming we
// rolled the dstColorSpace into the key).
const auto desc = SkBitmapCacheDesc::Make(this);
if (SkBitmapCache::Find(desc, dst)) {
SkASSERT(dst->getGenerationID() == this->uniqueID());
@ -76,17 +78,15 @@ bool SkImage_Gpu::getROPixels(SkBitmap* dst, SkColorSpace* dstColorSpace, Cachin
return true;
}
SkImageInfo ii = make_info(this->width(), this->height(), this->alphaType(),
sk_ref_sp(dstColorSpace));
SkBitmapCache::RecPtr rec = nullptr;
SkPixmap pmap;
if (kAllow_CachingHint == chint) {
rec = SkBitmapCache::Alloc(desc, ii, &pmap);
rec = SkBitmapCache::Alloc(desc, this->onImageInfo(), &pmap);
if (!rec) {
return false;
}
} else {
if (!dst->tryAllocPixels(ii) || !dst->peekPixels(&pmap)) {
if (!dst->tryAllocPixels(this->onImageInfo()) || !dst->peekPixels(&pmap)) {
return false;
}
}