Milestone Release Notes

This page includes a list of high level updates for each milestone release.

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Milestone 81

• Added support for GL_NV_fence extension.

• Make SkImageInfo::validRowBytes require rowBytes to be pixel aligned. This makes SkBitmap match the behavior of raster SkSurfaces in rejecting non-aligned rowBytes.

• Added an SkImage::MakeRasterFromCompressed entry point. Also updated SkImage::MakeFromCompressed to decompress the compressed image data if the GPU doesn‘t support the specified compression type (i.e., macOS Metal doesn’t support BC1_RGB8_UNORM so such compressed images will always be decompressed on that platform).

• Added support for BC1 RGBA compressed textures

• Added CachingHint to SkImage::makeRasterImage

• Added SkAnimatedImage::getCurrentFrame()

• Add support to create an SkSurface from an MTKView, with delayed acquisition of the MTLDrawable. Entry point: SkSurface::MakeFromMTKView

• Removed SkIRect::EmptyIRect(). Use SkIRect::MakeEmpty() instead. https://review.skia.org/262382/

• Moved SkRuntimeEffect to public API. This is the new (experimental) interface to custom SkSL shaders and color filters.

• Added BC1 compressed format support. Metal and Vulkan seem to only support the BC formats on desktop machines.

• Added compressed format support for backend texture creation API. This adds the following new entry points: GrContext::compressedBackendFormat GrContext::createCompressedBackendTexture The latter method comes in variants that allow color-initialized and compressed texture data initialized.

• Added SkMatrix::MakeTrans(SkIVector) https://review.skia.org/259804

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Milestone 80

• Removed SkSize& SkSize::operator=(const SkISize&) https://review.skia.org/257880

• SkISize width() and height() now constexpr https://review.skia.org/257680

• Added SkMatrix::MakeTrans(SkVector) and SkRect::makeOffset(SkVector). https://review.skia.org/255782

• Added SkImageInfo::MakeA8(SkISize) and added optional color space parameter to SkImageInfo::MakeN32Premul(SkISize).

• Added dimensions() and getFrameCount() to SkAnimatedImage https://review.skia.org/253542

• Removed SkMatrix44 version of toXYZD50 from SkColorSpace. Switched to skcms types in transferFn, invTrasnferFn, and gamutTransformTo functions. https://review.skia.org/252596

• Removed rotation and YUV support from SkColorMatrix https://review.skia.org/252188

• Added kBT2020_SkYUVColorSpace. This is BT.2020's YCbCr conversion (non-constant-luminance). https://review.skia.org/252160

• Remove old async read pixels APIs https://review.skia.org/251198

• Expose SkBlendModeCoeff and SkBlendMode_AsCoeff for Porter-Duff blend modes. https://review.skia.org/252600

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Milestone 79

• SkTextBlob::Iter to discover the glyph indices and typefaces in each run https://review.skia.org/246296

• Added support for PQ and HLG transfer functions to SkColorSpace. https://review.skia.org/249000

• Added new api on GrContext ComputeImageSize. This replaces the hold static helper ComputeTextureSize. https://review.skia.org/247337

• New versions of SkSurface async-rescale-and read APIs that allow client to extend the lifetime of the result data. Old versions are deprecated. https://review.skia.org/245457

• Add SkColorInfo. It's dimensionless SkImageInfo. https://review.skia.org/245261

• Added SkPixmap-based createBackendTexture method to GrContext. This allows clients to create backend resources (initialized with texture data) that Skia/Ganesh doesn't know about/track. https://review.skia.org/244676

• Add explicit src and dst colorspace parameters to SkColorFilter::filterColor4f() https://review.skia.org/244882

• Remove Vulkan/Metal float32 RGBA texture support https://review.skia.org/244881

• Add SkSurface::MakeFromCAMetalLayer https://review.skia.org/242563

• Added kAlpha_F16_SkColorType, kRG_F16_SkColorType and kRGBA_16161616_SkColorType. This is intended to help support HDR YUV uses case (e.g., P010 and P016). As such, the addition is focused on allowing creation of SkPixmaps and SkImages and not SkSurfaces (i.e., who wants to render to render to these?) https://review.skia.org/241357

• Start to move nested SkPath types (e.g. Direction, Verb) up to root level in SkPathTypes.h https://review.skia.org/241079

• Remove isRectContour and ksNestedFillRects from public https://review.skia.org/241078

• Added kRG_88_SkColorType. This is intended to help support YUV uses case (e.g., NV12). As such, the addition is focused on allowing creation of SkPixmaps and SkImages and not SkSurfaces (i.e., who wants to render to RG?) https://review.skia.org/239930 https://review.skia.org/235797

• Make the size of program/pipeline caches configurable via GrContextOptions::fRuntimeProgramCacheSize https://review.skia.org/239756

• Added kAlpha_16_SkColorType and kRG_1616_SkColorType. This is intended to help support HDR YUV uses case (e.g., P010 and P016). As such, the addition is focused on allowing creation of SkPixmaps and SkImages and not SkSurfaces (i.e., who wants to render to render to these?) https://review.skia.org/239930

• Add GrContext::precompileShader to allow up-front compilation of previously-cached shaders. https://review.skia.org/239438

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Milestone 78

• Added RELEASE_NOTES.txt file https://review.skia.org/229760

• SkDrawLooper is no longer supported in SkPaint or SkCanvas. https://review.skia.org/230579 https://review.skia.org/231736

• SkPath::Iter::next() now ignores its consumDegenerates bools. Those will so go away entirely https://review.skia.org/235104

• SkImage: new factories: DecodeToRaster, DecodeToTexture https://review.skia.org/234476

• SkImageFilter API refactor started:

  • Provide new factory API in include/effects/SkImageFilters
  • Consolidated enum types to use SkTileMode and SkColorChannel
  • Hide filter implementation classes
  • Hide previously public functions on SkImageFilter that were intended for internal use only https://review.skia.org/230198 https://review.skia.org/230876 https://review.skia.org/231256

• SkColorFilters::HSLAMatrix - new matrix color filter operating in HSLA space. https://review.skia.org/231736

• Modify GrBackendFormat getters to not return internal pointers. Use an enum class for GL formats. https://review.skia.org/233160

• Expose GrContext::dump() when SK_ENABLE_DUMP_GPU is defined. https://review.skia.org/233557

• Vulkan backend now supports YCbCr sampler for I420 Vulkan images that are not backed by external images. https://review.skia.org/233776

• Add SkCodec::SelectionPolicy for distinguishing between decoding a still image or an image sequence for a container format that has both (e.g. HEIF). https://review.skia.org/232839

• SkImage::makeTextureImage and SkImage::MakeCrossContextFromPixmap no longer take an SkColorSpace parameter. It was unused. https://review.skia.org/234579 https://review.skia.org/234912

• SkImage::reinterpretColorSpace - to reinterpret image contents in a new color space. https://review.skia.org/234328

• Removed SkImage::MakeCrossContextFromEncoded. https://review.skia.org/234912

• Add Metal support for GrFence, GrSemaphore, and GrBackendSemaphore https://review.skia.org/233416

• SkMallocPixelRef: remove MakeDirect and MakeWithProc from API. https://review.skia.org/234660

• Remove 4-parameter variant of SkRect::join() and intersect(), and noemptycheck variants of intersect(). https://review.skia.org/235832 https://review.skia.org/237142

• Remove unused sk_sp comparison operators. https://review.skia.org/236942

• Add SkColor4f variant to experimental_DrawEdgeAAQuad for SkiaRenderer. https://review.skia.org/237492

• Deprecated maxCount resource cache limit for Ganesh. This hasn't been relevant for a long time.

• Changed GrContextOptions' fDisallowGLSLBinaryCaching to fShaderCacheStrategy, and allow caching SkSL. https://review.skia.org/238856