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Skia Graphics Release Notes
This file includes a list of high level updates for each milestone release.
* * *
Milestone 81
<Insert new notes here- top is most recent.>
* 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.
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:
The latter method comes in variants that allow color-initialized and
compressed texture data initialized.
* * *
* Added SkMatrix::MakeTrans(SkIVector)
Milestone 80
* For Vulkan backend, we now require that the VkDevice, Queue, and Instance outlive
either the destruction or abandoning of the GrContext. Additionally, all
GrBackendTextures created via GrContext::createBackendTexture calls must be deleted
before destroying or abandoning the GrContext.
* Removed SkSize& SkSize::operator=(const SkISize&)
* SkISize width() and height() now constexpr
* Added SkMatrix::MakeTrans(SkVector) and SkRect::makeOffset(SkVector).
* Added SkImageInfo::MakeA8(SkISize) and added optional color space parameter to
* Added dimensions() and getFrameCount() to SkAnimatedImage
* Removed SkMatrix44 version of toXYZD50 from SkColorSpace. Switched to skcms types in
transferFn, invTrasnferFn, and gamutTransformTo functions.
* Removed rotation and YUV support from SkColorMatrix
* Added kBT2020_SkYUVColorSpace. This is BT.2020's YCbCr conversion (non-constant-luminance).
* Remove old async read pixels APIs
* Expose SkBlendModeCoeff and SkBlendMode_AsCoeff for Porter-Duff blend modes.
* * *
Milestone 79
* SkTextBlob::Iter to discover the glyph indices and typefaces in each run
* Added support for PQ and HLG transfer functions to SkColorSpace.
* Added new api on GrContext ComputeImageSize. This replaces the hold static helper
* New versions of SkSurface async-rescale-and read APIs that allow client to extend
the lifetime of the result data. Old versions are deprecated.
* Add SkColorInfo. It's dimensionless SkImageInfo.
* 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.
* Add explicit src and dst colorspace parameters to SkColorFilter::filterColor4f()
* Remove Vulkan/Metal float32 RGBA texture support
* Add SkSurface::MakeFromCAMetalLayer
* 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?)
* Start to move nested SkPath types (e.g. Direction, Verb) up to root level in SkPathTypes.h
* Remove isRectContour and ksNestedFillRects from public
* 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?)
* Make the size of program/pipeline caches configurable via
* 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?)
* Add GrContext::precompileShader to allow up-front compilation of previously-cached shaders.
* * *
Milestone 78
* SkDrawLooper is no longer supported in SkPaint or SkCanvas.
* SkPath::Iter::next() now ignores its consumDegenerates bools. Those will so
go away entirely
* SkImage: new factories: DecodeToRaster, DecodeToTexture
* 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
* SkColorFilters::HSLAMatrix - new matrix color filter operating in HSLA
* Modify GrBackendFormat getters to not return internal pointers. Use an enum
class for GL formats.
* Expose GrContext::dump() when SK_ENABLE_DUMP_GPU is defined.
* Vulkan backend now supports YCbCr sampler for I420 Vulkan images that are
not backed by external images.
* Add SkCodec::SelectionPolicy for distinguishing between decoding a still
image or an image sequence for a container format that has both (e.g. HEIF).
* SkImage::makeTextureImage and SkImage::MakeCrossContextFromPixmap no longer
take an SkColorSpace parameter. It was unused.
* SkImage::reinterpretColorSpace - to reinterpret image contents in a new
color space.
* Removed SkImage::MakeCrossContextFromEncoded.
* Add Metal support for GrFence, GrSemaphore, and GrBackendSemaphore
* SkMallocPixelRef: remove MakeDirect and MakeWithProc from API.
* Remove 4-parameter variant of SkRect::join() and intersect(), and
noemptycheck variants of intersect().
* Remove unused sk_sp comparison operators.
* Add SkColor4f variant to experimental_DrawEdgeAAQuad for SkiaRenderer.
* 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.
* Use GL_QCOM_TILED_RENDERING to explicitly discard stencil
* Added RELEASE_NOTES.txt file
* Implemented internal support for OpenGL tessellation.