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* Convert SkAutoTUnref<SkData> to sk_sp<SkData>.Gravatar bungeman2016-08-03
| | | | | | | | | With the move from SkData::NewXXX to SkData::MakeXXX most SkAutoTUnref<SkData> were changed to sk_sp<SkData>. However, there are still a few SkAutoTUnref<SkData> around, so clean them up. Review-Url: https://codereview.chromium.org/2212493002
* Perform color correction on png decodesGravatar msarett2016-08-03
| | | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2184543003 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2184543003
* Don't leave fResScale uninitialized when constructing an SkStroke.Gravatar deanm2016-08-03
| | | | | | | | | | | Set a default value of 1. Users can set it with setResScale, but it's better that the constructor doesn't just leave the field uninitialized otherwise. R=reed@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2207753003 Review-Url: https://codereview.chromium.org/2207753003
* Fix copy-paste bugs in SkCanvas Nine and LatticeGravatar msarett2016-08-03
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2203983002 Review-Url: https://codereview.chromium.org/2203983002
* Fixed ambient lighting calculations on SkLightingShaderGravatar dvonbeck2016-08-02
| | | | | | | BUG=skia:5520 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2202233003 Review-Url: https://codereview.chromium.org/2202233003
* Move off SK_SUPPORT_LEGACY_DATA_FACTORIES.Gravatar bungeman2016-08-02
| | | | | | | This moves Skia code off of SK_SUPPORT_LEGACY_DATA_FACTORIES. GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2206633004 Review-Url: https://codereview.chromium.org/2206633004
* Refactor of SkColorSpaceXformOptsGravatar msarett2016-08-02
| | | | | | | | | | | | | | | | | (1) Performance is better or stays the same. (2) Code is split into functions (RasterPipeline-ish design). IMO, it's not really more or less readable. But I think it's now much easier add capabilities, apply optimizations, or do more refactors. Or to actually use RasterPipeline. I help back from trying any of these to try to keep this CL sane. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2194303002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2194303002
* Add drawImageLattice() and drawBitmapLattice() APIsGravatar msarett2016-08-02
| | | | | | | | | | | | The specified image/bitmap is divided into rects, which can be draw stretched, shrunk, or at a fixed size. Will be used by Android to draw 9patch (which are acutally N-patch) images. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1992283002 Review-Url: https://codereview.chromium.org/1992283002
* Always return ImageShader, even from SkShader::MakeBitmapShaderGravatar reed2016-08-02
| | | | | | | | | | | | | | | Lessons learned 1. ImageShader (correctly) always compresses (typically via PNG) during serialization. This has the surprise results of - if the image was marked opaque, but has some non-opaque pixels (i.e. bug in blitter or caller), then compressing may "fix" those pixels, making the deserialized version draw differently. bug filed. - 565 compressess/decompresses to 8888 (at least on Mac), which draws differently (esp. under some filters). bug filed. 2. BitmapShader did not enforce a copy for mutable bitmaps, but ImageShader does (since it creates an Image). Thus the former would see subsequent changes to the pixels after shader creation, while the latter does not, hence the change to the BlitRow test to avoid this modify-after-create pattern. I sure hope this prev. behavior was a bug/undefined-behavior, since this CL changes that. BUG=skia:5595 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2195893002 Review-Url: https://codereview.chromium.org/2195893002
* Hide (mostly) unused SkColorSpace writeToICC() functionGravatar msarett2016-08-01
| | | | | | | | | | | | | This originally was intended to be used for serialization, but we've chosen another approach. Includes a revert of: https://codereview.chromium.org/2012133003/ BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2193223002 Review-Url: https://codereview.chromium.org/2193223002
* Sketch SkPictureRecorder::optimizeFor(GrContext*).Gravatar mtklein2016-08-01
| | | | | | | | | | I'm open to API suggestions. We can pass this in finishAs(), up front, whatever. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2203453002 Review-Url: https://codereview.chromium.org/2203453002
* Replace 'Ulta' with 'Ultra'.Gravatar bungeman2016-08-01
| | | | | | | | | Start fixing a typo in an enum name. TBR=reed This is just a typo fix. Review-Url: https://codereview.chromium.org/2202703002
* implement isABitmap for imageshader, return localmatrix for bitmap's implGravatar reed2016-08-01
| | | | | | | | | For imageshader, I only return true if the image is explicitly raster-backed. I do not return true for texture, nor for generator (i.e. lazy/picture) backed. Is that ok? BUG=skia:5592 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2197323002 Review-Url: https://codereview.chromium.org/2197323002
* Replace old SkRecords RefBox with sk_sp.Gravatar mtklein2016-08-01
| | | | | | | | | | | | The main differences are that RefBox's constructor reffed and sk_sp's doesn't, and that RefBox auto-casts to the underlying pointer while sk_sp doesn't. I've added a bunch of sk_ref_sp() and .get() to compensate. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2197243003 Review-Url: https://codereview.chromium.org/2197243003
* GrFP can express distance vector field req., program builder declares ↵Gravatar dvonbeck2016-08-01
| | | | | | | | | | | | | | | | | | | | | variable for it This update allows fragment processors to require a field of vectors to the nearest edge. This requirement propagates: - from child FPs to their parent - from parent FPs to the GrPaint - from GrPaint through the PipelineBuilder into GrPipeline - acessed from GrPipeline by GrGLSLProgramBuilder GrGLSL generates a variable for the distance vector and passes it down to the GeometryProcessor->emitCode() method. This CL's base is the CL for adding the BevelNormalSource API: https://codereview.chromium.org/2080993002 BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2114993002 Committed: https://skia.googlesource.com/skia/+/4ef6dfa7089c092c67b0d5ec34e89c1e319af196 Review-Url: https://codereview.chromium.org/2114993002
* adding new GM to demostrate new shadowsGravatar vjiaoblack2016-08-01
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2118553002 Review-Url: https://codereview.chromium.org/2118553002
* Add SkColorSpace::Equals() APIGravatar msarett2016-08-01
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2196743002 Review-Url: https://codereview.chromium.org/2196743002
* Revert of GrFP can express distance vector field req., program builder ↵Gravatar mtklein2016-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | declares variable for it (patchset #20 id:370001 of https://codereview.chromium.org/2114993002/ ) Reason for revert: UBSAN says we're reading a bad bool here: bool usesDistanceVectorField() const { return fUsesDistanceVectorField; } ../../../include/gpu/GrPaint.h:83:51: runtime error: load of value 239, which is not a valid value for type 'bool' SUMMARY: AddressSanitizer: undefined-behavior ../../../include/gpu/GrPaint.h:83:51 in Seems likely also the root of Valgrind failure: https://luci-milo.appspot.com/swarming/task/30522e4f2241cb10 Original issue's description: > GrFP can express distance vector field req., program builder declares variable for it > > This update allows fragment processors to require a field of vectors to the nearest edge. This requirement propagates: > > - from child FPs to their parent > - from parent FPs to the GrPaint > - from GrPaint through the PipelineBuilder into GrPipeline > - acessed from GrPipeline by GrGLSLProgramBuilder > > GrGLSL generates a variable for the distance vector and passes it down to the GeometryProcessor->emitCode() method. > > This CL's base is the CL for adding the BevelNormalSource API: https://codereview.chromium.org/2080993002 > > BUG=skia: > GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2114993002 > > Committed: https://skia.googlesource.com/skia/+/4ef6dfa7089c092c67b0d5ec34e89c1e319af196 TBR=egdaniel@google.com,robertphillips@google.com,bsalomon@google.com,dvonbeck@google.com # Not skipping CQ checks because original CL landed more than 1 days ago. BUG=skia: Review-Url: https://codereview.chromium.org/2201613002
* SkRasterPipeline: new APIs for fusionGravatar mtklein2016-07-29
| | | | | | | | | | | | | | | | | | | Most visibly this adds a macro SK_RASTER_STAGE that cuts down on the boilerplate of defining a raster pipeline stage function. Most interestingly, SK_RASTER_STAGE doesn't define a SkRasterPipeline::Fn, but rather a new type EasyFn. This function is always static and inlined, and the details of interacting with the SkRasterPipeline::Stage are taken care of for you: ctx is just passed as a void*, and st->next() is always called. All EasyFns have to do is take care of the meat of the work: update r,g,b, etc. and read and write from their context. The really neat new feature here is that you can either add EasyFns to a pipeline with the new append() functions, _or_ call them directly yourself. This lets you use the same set of pieces to build either a pipelined version of the function or a custom, fused version. The bench shows this off. On my desktop, the pipeline version of the bench takes about 25% more time to run than the fused one. The old approach to creating stages still works fine. I haven't updated SkXfermode.cpp or SkArithmeticMode.cpp because they seemed just as clear using Fn directly as they would have using EasyFn. If this looks okay to you I will rework the comments in SkRasterPipeline to explain SK_RASTER_STAGE and EasyFn a bit as I've done here in the CL description. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2195853002 Review-Url: https://codereview.chromium.org/2195853002
* SkNx: add Sk4uGravatar mtklein2016-07-29
| | | | | | | | | | This lets us get at logical >> in a nicely principled way. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2197683002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2197683002
* GrFP can express distance vector field req., program builder declares ↵Gravatar dvonbeck2016-07-29
| | | | | | | | | | | | | | | | | | | | variable for it This update allows fragment processors to require a field of vectors to the nearest edge. This requirement propagates: - from child FPs to their parent - from parent FPs to the GrPaint - from GrPaint through the PipelineBuilder into GrPipeline - acessed from GrPipeline by GrGLSLProgramBuilder GrGLSL generates a variable for the distance vector and passes it down to the GeometryProcessor->emitCode() method. This CL's base is the CL for adding the BevelNormalSource API: https://codereview.chromium.org/2080993002 BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2114993002 Review-Url: https://codereview.chromium.org/2114993002
* Fix various SkColorSpace bugsGravatar msarett2016-07-29
| | | | | | | | | | (1) Fixes serialization/deserialization of wacky SkColorSpaces (2) Fix gamma equals checking BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2194903002 Review-Url: https://codereview.chromium.org/2194903002
* Add color space xform support to SkJpegCodec (includes F16!)Gravatar msarett2016-07-29
| | | | | | | | | | | | | | | | | Also changes SkColorXform to support: RGBA->RGBA RGBA->BGRA Instead of: RGBA->SkPMColor TBR=reed@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2174493002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Committed: https://skia.googlesource.com/skia/+/73d55332e2846dd05e9efdaa2f017bcc3872884b Review-Url: https://codereview.chromium.org/2174493002
* Revert of Add color space xform support to SkJpegCodec (includes F16!) ↵Gravatar msarett2016-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (patchset #9 id:260001 of https://codereview.chromium.org/2174493002/ ) Reason for revert: Breaking MSAN Original issue's description: > Add color space xform support to SkJpegCodec (includes F16!) > > Also changes SkColorXform to support: > RGBA->RGBA > RGBA->BGRA > > Instead of: > RGBA->SkPMColor > > TBR=reed@google.com > BUG=skia: > GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2174493002 > CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot > > Committed: https://skia.googlesource.com/skia/+/73d55332e2846dd05e9efdaa2f017bcc3872884b TBR=mtklein@google.com,reed@google.com,herb@google.com,brianosman@google.com # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia: Review-Url: https://codereview.chromium.org/2195523002
* Add color space xform support to SkJpegCodec (includes F16!)Gravatar msarett2016-07-28
| | | | | | | | | | | | | | | | Also changes SkColorXform to support: RGBA->RGBA RGBA->BGRA Instead of: RGBA->SkPMColor TBR=reed@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2174493002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2174493002
* turn bitmaps into images during recordingGravatar reed2016-07-28
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2185563003 Review-Url: https://codereview.chromium.org/2185563003
* Add writeToMemory() API to SkColorSpaceGravatar msarett2016-07-28
| | | | | | | | | | | | | | | | | New API mirrors the form of similar APIs in SkRegion, SkMatrix, etc. This also fixes a bug: SkImageInfo appears in a object that Chrome stores in discardable memory. So when sk_sp<SkColorSpace> was added to SkImageInfo a leak was introduced. We'll use this new method and deserialize to store the SkColorSpace in the discardable object. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2192903002 Review-Url: https://codereview.chromium.org/2192903002
* SkPaint intercept API for SkTextBlob and horizontal textGravatar fmalita2016-07-28
| | | | | | | | | | | | Add getPosTextHIntercepts(), getTextBlobIntercepts(). Consolidate the implementation in GetTextIntercepts<> template. BUG=chormium:581456 R=caryclark@google.com,reed@google.com GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186663004 Review-Url: https://codereview.chromium.org/2186663004
* Added API for Bevel NormalSource.Gravatar dvonbeck2016-07-28
| | | | | | | | | | | This CL adds an API for Bevel normal source and a dummy implementation that returns a normal (0, 0, 1) every time. This CL's base is the CL for accepting nullptrs: https://codereview.chromium.org/2132113002 BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2080993002 Review-Url: https://codereview.chromium.org/2080993002
* Revert of align cap hairline first point (patchset #2 id:20001 of ↵Gravatar tomhudson2016-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://codereview.chromium.org/2189583003/ ) Reason for revert: Speculative revert in case this is blocking our roll. Original issue's description: > align cap hairline first point > > Hairlines with square caps move the endpoints out by 1/2 pixel. > The last point needs to be the first adjusted point, instead > of the point supplied to move to. > > R=fmalita@chromium.org > TBR=reed@google.com > BUG=617658 > GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2189583003 > > Committed: https://skia.googlesource.com/skia/+/52f85d4d09b815fce6bfe296a1dd2cbf8d792f05 TBR=fmalita@chromium.org,reed@google.com,caryclark@google.com # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=617658 Review-Url: https://codereview.chromium.org/2188483007
* Expose more gamma info for UMA statisticsGravatar msarett2016-07-27
| | | | | | | | TBR=reed@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2188633003 Review-Url: https://codereview.chromium.org/2188633003
* align cap hairline first pointGravatar caryclark2016-07-27
| | | | | | | | | | | | | Hairlines with square caps move the endpoints out by 1/2 pixel. The last point needs to be the first adjusted point, instead of the point supplied to move to. R=fmalita@chromium.org TBR=reed@google.com BUG=617658 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2189583003 Review-Url: https://codereview.chromium.org/2189583003
* Rename GrContext's newDrawContext & drawContext to makeDrawContextGravatar robertphillips2016-07-27
| | | | | | | | These both return sk_sp. GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186073002 Review-Url: https://codereview.chromium.org/2186073002
* require semi at the end of SkASSERT and friendsGravatar caryclark2016-07-27
| | | | | | | | R=bungeman@google.com TBR=reed@google.com GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2185063002 Review-Url: https://codereview.chromium.org/2185063002
* Fix leak of srgb/adobesrgb colorspace objectsGravatar bsalomon2016-07-27
| | | | | | GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2185043002 Review-Url: https://codereview.chromium.org/2185043002
* Start measuring f16 and srgb speed.Gravatar mtklein2016-07-26
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2181073003 Review-Url: https://codereview.chromium.org/2181073003
* don't specialize drawBitmapRect for minirecorder; no longer called by blinkGravatar reed2016-07-26
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2183193002 Review-Url: https://codereview.chromium.org/2183193002
* Add Sk4h_load4 for loading F16.Gravatar mtklein2016-07-26
| | | | | | | | | | | | | | Should feel very similar to Sk4h_store4: NEON uses its native instruction, SSE unpacks manually. Since we'll have our F16s in 4 Sk4h by the time we're done here, this also extracts an Sk4h->Sk4f routine from the old uint64_t->Sk4f one. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2184753002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2184753002
* respect kFast_SrcRectConstraint by allowing shader access to entire bitmapGravatar reed2016-07-25
| | | | | | | BUG=355305 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2176193002 Review-Url: https://codereview.chromium.org/2176193002
* Delete SkDefaultXform, handle edge cases in SkColorSpaceXform_BaseGravatar msarett2016-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | "Edge" cases include: (1) Matrices with translation (2) colorLUTs Performance on HP z620: 201295.jpg to2Dot2: 386us -> 414us toSRGB: 346us -> 371us toHalf: 282us -> 302us strange0-translate.jpg toSRGB: 1060us -> 244us strange1-colorLUT.jpg toSRGB: 2.74ms -> 2.00ms BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2177173003 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2177173003
* Fix F16 raster text masks. We don't want fake gamma in that case.Gravatar brianosman2016-07-25
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2184443002 Review-Url: https://codereview.chromium.org/2184443002
* Update typeface serialization style.Gravatar bungeman2016-07-25
| | | | | | | GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2030683002 Committed: https://skia.googlesource.com/skia/+/7ae1c72e593823e6e300e4199558555765bcec17 Review-Url: https://codereview.chromium.org/2030683002
* Add test for typeface style round trip.Gravatar bungeman2016-07-25
| | | | | | | | This also fixes the CG and GDI ports so they pass the test. GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2171163002 Review-Url: https://codereview.chromium.org/2171163002
* Have SkRasterPipelineBlitter take over for F16 when it can.Gravatar mtklein2016-07-25
| | | | | | | | | 3 minor diffs to a couple GMs from fixed transfermodes (arithmetic and plus). BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2181033002 Review-Url: https://codereview.chromium.org/2181033002
* lock special-raster while the caller's bitmap is in-scopeGravatar reed2016-07-25
| | | | | | | | | previous CL that removed the specialimage subclass that wrapped the original image: https://codereview.chromium.org/2164073004 BUG=skia:5574 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2183483003 Review-Url: https://codereview.chromium.org/2183483003
* Google3 <functional> has a global "using std::plus"...Gravatar mtklein2016-07-25
| | | | | | | | | | | ... so we can't use the name plus(). -_- TBR=tomhudson@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2183453003 Review-Url: https://codereview.chromium.org/2183453003
* stages for most xfermodesGravatar mtklein2016-07-25
| | | | | | | | | also assumes the clamp from https://codereview.chromium.org/2178793002/ is present BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2177103002 Review-Url: https://codereview.chromium.org/2177103002
* remove/deprecate SkBitmap::getTexture, as it now always returns falseGravatar reed2016-07-25
| | | | | | | | | oh happy day BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2175873002 Review-Url: https://codereview.chromium.org/2175873002
* remove fClipStack and attach/deattach-from-canvasGravatar reed2016-07-25
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2180793002 Review-Url: https://codereview.chromium.org/2180793002
* Add a clamp stage to SkRasterPipelineBlitter.Gravatar mtklein2016-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | This clamps to [0,1] premul just before every store to memory. By making the clamp a stage itself, this design makes it easy to move the clamp around, to replace it with a debug-only assert-we're-clamped stage for certain formats, clamp in more places, programatically not clamp, etc. etc. Before this change, clamping was a little haphazard: store_srgb clamped R, G and B to [0,1], but not A, and didn't clamp the colors to A. 565 didn't clamp at all. 6 GMs draw subtly differently in sRGB, I think because we've started clamping colors to alpha to enforce premultiplication better. No changes for 565. My hope is that now no other stage need ever concern itself with clamping. So we don't double-clamp, I've added a _noclamp version of sk_linear_to_srgb() that simply asserts a clamp isn't necessary. This happens to expose the Sk4f _needs_trunc version that might be useful for power users (*cough* Matt *cough*). BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2178793002 Review-Url: https://codereview.chromium.org/2178793002
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