| Skia Graphics Release Notes | 
 |  | 
 | This file includes a list of high level updates for each milestone release. | 
 |  | 
 | Milestone 102 | 
 | ------------- | 
 |   * Add glGetFloatv and glSamplerParameterf to GrGLInterface. | 
 |   * GrGLCreateNativeInterface is removed. Use GrGLMakeNativeInterface. | 
 |   * GrContextOptions::fSharpenMipmappedTextures is removed. MIP LOD is now always | 
 |     biased on the GPU backend. The CPU backend implementation is modified to match | 
 |     this behavior. | 
 |   * Passing SkCanvas::kStrict_SrcRectConstraint disables mipmapping. The old behavior differed | 
 |     between GPU and CPU. CPU always computed a new set of mipmap based on the subset. GPU restricted | 
 |     the sampling coordinates to the subset in the base level but upper level pixels that map to | 
 |     pixels outside the subset in the base level were still used. To get the previous CPU behavior | 
 |     use SkImage::makeSubset() to make a subset image and draw that. The previous GPU behavior is | 
 |     similar, though not exactly, equivalent to making a mipmapped image shader from the original | 
 |     image and applying that to a rectangle. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 101 | 
 | ------------- | 
 |   * Add maxSurfaceSampleCountForColorType(SkColorType ct) in GrContextThreadSafeProxy | 
 |   * Enums SkAlphaType and SkColorType are broken out into their own header files in include/core/ | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 100 | 
 | ------------- | 
 |   * Skia now requires C++17 and the corresponding standard library (or newer). | 
 |   * Skia on iOS now requires iOS 11 to build; earlier versions of iOS do not support C++17. | 
 |   * The skstd::string_view and skstd::optional Skia classes have been replaced with the C++17 native | 
 |     std::string_view and std::optional. | 
 |   * Added SkSurface::resolveMSAA api to force Skia to resolve MSAA draws. Useful for when | 
 |     Skia wraps a client's texture as the resolve target. | 
 |   * All of the `makeShader` functions associated with `SkRuntimeEffect` no longer take an | 
 |     `isOpaque` parameter. These functions will now make a best effort to determine if your | 
 |     shader always produces opaque output, and optimize accordingly. If you definitely want your | 
 |     shader to produce opaque output, do so in the shader's SkSL code. This can be done by adjusting | 
 |     any `return` statement in your shader with a swizzle: `return color.rgb1;`. | 
 |     https://review.skia.org/506462 | 
 |   * SkRSXform is now exported to DLL/.so files. | 
 | * * * | 
 |  | 
 | Milestone 99 | 
 | ------------ | 
 |   * Added two new intrinsic functions to SkSL for use in runtime effects: | 
 |       vec3 toLinearSrgb(vec3 color) | 
 |       vec3 fromLinearSrgb(vec3 color) | 
 |     These convert RGB color values between the working color space (the color space of the | 
 |     destination surface) and a known, fixed color space. `toLinearSrgb` converts a color to the | 
 |     sRGB color gamut, with a linear transfer function. `fromLinearSrgb` converts a color from that | 
 |     same color space. These are helpful for effects that need to work in a specific color space, or | 
 |     want to apply effects (like lighting) that work best in a linear color space. | 
 |     Note that if the destination surface has no color space (color space is `nullptr`), these | 
 |     intrinsics will do no conversion, and return the input color unchanged. | 
 |     https://review.skia.org/481416 | 
 |   * Added a new variant of SkImageFilters::RuntimeShader that supports multiple child nodes. | 
 |     https://review.skia.org/489536 | 
 |   * Add the ability to specify palette overrides in SkFontArguments. Implemented | 
 |     for the FreeType-backed SkFontMgrs. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 98 | 
 | ------------ | 
 |   * The following functions and methods are not defined in SkSurface when SK_SUPPORT_GPU is 0: | 
 |     MakeFromBackendTexture, MakeFromBackendRenderTarget, MakeRenderTarget, | 
 |     getBackendTexture, getBackendRenderTarget, replaceBackendTexture. flush() with parameters | 
 |     was removed as well. These were all no-ops anyway when just the CPU backend was compiled in | 
 |     (noting that flush() and flushAndSubmit() are still no-ops on the CPU backend). | 
 |   * GrBackendSemaphore only includes methods that match the GPU backend that Skia was compiled for. | 
 |     For example, initVulkan and vkSemaphore are not defined unless the Vulkan backend is compiled | 
 |     into Skia. | 
 |   * Surfaces and images are now limited to just under 2GB of total size. Previously, larger images | 
 |     could be created, but the CPU backend would fail to index them correctly. | 
 |   * SkCanvas::drawVertices and SkCanvas::drawPatch variants that did not take SkBlendMode are | 
 |     removed. | 
 |   * SkImageFilters::RuntimeShader is a new public API that enables adding RuntimeShaderEffects into | 
 |     image filter graph. | 
 |   * SkImage::makeRawShader is a new public API that creates "raw" image shaders. makeRawShader | 
 |     functions like SkImage::makeShader, but for images that contain non-color data. This includes | 
 |     images encoding things like normals, material properties (eg roughness), heightmaps, or any | 
 |     other purely mathematical data that happens to be stored in an image. These types of images are | 
 |     useful with some programmable shaders (ie SkRuntimeEffect). | 
 |     Raw image shaders work like regular image shaders (including filtering and tiling), with a few | 
 |     major differences: | 
 |       - No color space transformation is ever applied (the color space of the image is ignored). | 
 |       - Images with an alpha type of kUnpremul are not automatically premultiplied. | 
 |       - Bicubic filtering is not supported. If SkSamplingOptions::useCubic is true, these factories | 
 |         will return nullptr. | 
 |   * Removed SkCanvas::markCTM and SkCanvas::findMarkedCTM. These were created to be used with other | 
 |     features that have since been deleted, so they served no purpose. | 
 |   * Added limited JPEGXL support. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 97 | 
 | ------------ | 
 |   * Added basic support for vulkan DRM modifiers. All of these are treated as read only textures | 
 |     internally (versus querying specific modifier support). Clients can either pass a flag to Vulkan | 
 |     GrBackendFormat to say it uses modifiers or pass the VK_IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT | 
 |     to a GrBackendTexture via the GrVkImageInfo struct. | 
 |   * The following functions and methods are not defined in SkImage when SK_SUPPORT_GPU is 0: | 
 |     MakeTextureFromCompressed, MakeFromTexture, MakeFromCompressedTexture, | 
 |     MakeCrossContextFromPixmap, MakeFromAdoptedTexture, MakeFromYUVATextures, | 
 |     MakeFromYUVAPixmaps, MakePromiseTexture, MakePromiseYUVATexture, MakeBackendTextureFromSkImage, | 
 |     flush, flushAndSubmit, getBackendTexture, makeTextureImage. | 
 |     These were all no-ops anyway when just the CPU backend was compiled in. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 96 | 
 | ------------ | 
 |   * SkRuntimeEffect no longer clamps the RGB values of an effect's output to the range 0..A. | 
 |     This makes it easier to use a hierarchy of SkSL shaders where intermediate values do not | 
 |     represent colors but are, for example, non-color inputs to a lighting model. | 
 |     http://review.skia.org/452558 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 95 | 
 | ------------ | 
 |   * Minimum supported iOS raised from 8 to 11. Skia may build back to iOS 9 but versions older | 
 |     than 11 are not tested. Community contributions to support versions 9 and 10 of iOS may be | 
 |     considered, but they may not be complex as they cannot be tested. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 94 | 
 | ------------ | 
 |   * Metal backend has been changed to track command buffer resources manually | 
 |     rather than using retained resources. | 
 |     https://review.skia.org/432878 | 
 |  | 
 |   * Added virtual onResetClip() to SkCanvas for Android Framework, to emulate the soon-to-be-removed | 
 |     expanding clip ops guarded by SK_SUPPORT_DEPRECATED_CLIPOPS. | 
 |     https://review.skia.org/430897 | 
 |  | 
 |   * Removed SK_SUPPORT_DEPRECATED_CLIPOPS build flag. Clips can only be intersect and difference. | 
 |     https://review.skia.org/436565 | 
 |  | 
 |   * There is a new syntax for invoking (sampling) child effects in SkSL. Previously, children | 
 |     (shaders, colorFilters, blenders) were invoked using different overloads of `sample`. That | 
 |     syntax is deprecated (but still supported). Now, the child behaves like an object, with a method | 
 |     name `eval`. The arguments to these `eval` methods are the same as the arguments in the old | 
 |     `sample` intrinsics. For example: | 
 |       // Old syntax: | 
 |         sample(shader, xy) | 
 |         sample(colorFilter, color) | 
 |         sample(blender, srcColor, dstColor) | 
 |       // New syntax: | 
 |         shader.eval(xy) | 
 |         colorFilter.eval(color) | 
 |         blender.eval(srcColor, dstColor) | 
 |     https://review.skia.org/444735 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 93 | 
 | ------------ | 
 |   * Removed SkPaint::getHash | 
 |     https://review.skia.org/419336 | 
 |  | 
 |   * Removed SkShaders::Lerp. It was unused (and easy to replicate with SkRuntimeEffect). | 
 |     https://review.skia.org/419796 | 
 |  | 
 |   * The default value of GrContextOptions::fReduceOpsTaskSplitting is now enabled. | 
 |     https://review.skia.org/419836 | 
 |  | 
 |   * Removed SkMatrix44 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 92 | 
 | ------------ | 
 |   * Hides SkPathEffect::computeFastBounds() from public API; external subclasses of SkPathEffect | 
 |     must implement onComputeFastBounds() but can return false to signal it's not computable. | 
 |     https://review.skia.org/406140 | 
 |  | 
 |   * Add SkM44::RectToRect constructor (SkM44's equivalent to SkMatrix::RectToRect) | 
 |     https://review.skia.org/402957 | 
 |  | 
 |   * Metal support has been removed for versions of iOS older than 10.0 and MacOS older than 10.14. | 
 |     https://review.skia.org/401816 | 
 |  | 
 |   * Removed custom attributes from SkVertices and the corresponding `varying` feature from | 
 |     SkRuntimeEffect. | 
 |     https://review.skia.org/398222 | 
 |  | 
 |   * Dropped support for mixed samples. Mixed samples is no longer relevant for Ganesh. DMSAA and the | 
 |     new Ganesh architecture both rely on full MSAA, and any platform where mixed samples is | 
 |     supported will ultimately not use the old architecture. | 
 |  | 
 |   * SkRuntimeEffect::Make has been removed. It is replaced by MakeForShader and MakeForColorFilter. | 
 |     These functions do stricter error checking on the SkSL, to ensure it is valid for a particular | 
 |     stage of the Skia pipeline. | 
 |     https://review.skia.org/402156 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 91 | 
 | ------------ | 
 |   * The SkSL DSL API has been moved into public headers, although it is still under active | 
 |     development and isn't quite ready for prime time yet. | 
 |     https://review.skia.org/378496 | 
 |  | 
 |   * Skia's GPU backend no longer supports NVPR. Our more recent path renderers are more | 
 |     performant and are not limited to nVidia hardware. | 
 |  | 
 |   * SkRuntimeEffect now supports uniforms of type int, int2, int3, and int4. Per the OpenGL ES | 
 |     Shading Language Version 1.00 specification, there are few guarantees about the representation | 
 |     or range of integral types, and operations that assume integral representation (eg, bitwise), | 
 |     are not supported. | 
 |     https://review.skia.org/391856 | 
 |  | 
 |   * SkRuntimeEffect requires that 'shader' variables be declared as 'uniform'. The deprecated | 
 |     syntax of 'in shader' is no longer supported. | 
 |     https://review.skia.org/393081 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 90 | 
 | ------------ | 
 |   * Renamed use of sk_cf_obj in external Metal types to sk_cfp. | 
 |     https://review.skia.org/372556 | 
 |  | 
 |   * GrDirectContext::ComputeImageSize() is removed. Use SkImage::textureSize() instead. | 
 |     https://review.skia.org/368621 | 
 |     https://review.skia.org/369317 | 
 |     https://review.skia.org/371958 | 
 |  | 
 |   * Remove SkImageFilter::MakeMatrixFilter as it was unused and replaced with | 
 |     SkImageFilters::MatrixTransform. | 
 |     https://review.skia.org/366318 | 
 |  | 
 |   * Refactored particle system to use a single code string containing both Effect and Particle code. | 
 |     Uniform APIs are now shared for all program entry points, and no longer prefixed with 'Effect' | 
 |     or 'Particle'. For example, instead of `SkParticleEffect::effectUniformInfo` and | 
 |     `SkParticleEffect::particleUniformInfo`, there is just `SkParticleEffect::uniformInfo`. | 
 |  | 
 |   * Remove SkImageFilter::CropRect from the public API as it's no longer usable. All factories | 
 |     work with 'SkRect', 'SkIRect', or nullable pointers to 'Sk[I]Rect'. | 
 |     https://review.skia.org/361496 | 
 |  | 
 |   * Remove deprecated SkImageFilter factory functions and supporting types. All default-provided | 
 |     SkImageFilters are now only constructed via 'include/effects/SkImageFilters.h' | 
 |     https://review.skia.org/357285 | 
 |  | 
 |   * Added SkRuntimeEffect::makeImage() to capture the output of an SkRuntimeEffect in an SkImage. | 
 |     https://review.skia.org/357284 | 
 |  | 
 |   * Updated SkRuntimeEffect::Make() to take an Options struct. It also now returns a Results struct | 
 |     instead of a tuple. | 
 |     https://review.skia.org/363785 | 
 |     https://review.skia.org/367060 | 
 |  | 
 |   * Changed SkRuntimeEffect::Varying to have lower-case member names, with no 'f' prefix. | 
 |     https://review.skia.org/365656 | 
 |  | 
 |   * Changed SkRuntimeEffect::Uniform to have lower-case member names, with no 'f' prefix. | 
 |     https://review.skia.org/365696 | 
 |  | 
 |   * Deprecate (and ignore) SkAndroidCodec::ExifOrientation | 
 |     https://review.skia.org/344763 | 
 |  | 
 |   * Fix several minor issues in lighting image filters: | 
 |     - The spotlight falloff exponent is no longer clamped to [1, 128]. SVG 1.1 requires the specular | 
 |       lighting effect's exponent (shininess) to be clamped; not the spotlight's falloff. Any such | 
 |       parameter clamping is the client's responisibility, which makes Skia's lighting effect easily | 
 |       adaptable to SVG 1.1 (clamp exponent) or SVG 2 (no clamp). | 
 |     - Fix spotlight incorrectly scaling light within the cone angle. | 
 |     - Move saturation of RGBA to after multiplying lighting intensity with the lighting color, which | 
 |       improves rendering when diffuse and specular constants are greater than 1. | 
 |     https://review.skia.org/355496 | 
 |  | 
 |   * SkDeferredDisplayListRecorder::makePromiseTexture has moved to SkImage::MakePromiseTexture. | 
 |     New code should use the new entry point – migration CLs will be coming soon. | 
 |     https://review.skia.org/373716 | 
 |  | 
 | Milestone 89 | 
 | ------------ | 
 |   * Removed SkYUVAIndex and SkYUVASizeInfo. These were no longer used in any | 
 |     public APIs. | 
 |     https://review.skia.org/352497 | 
 |  | 
 |   * Numerous changes to SkRuntimeEffect, aligning the capabilities and restrictions with | 
 |     The OpenGL ES Shading Language 1.00 (aka, the shading language of OpenGL ES2 and WebGL 1.0). | 
 |     All built-in functions from sections 8.1 through 8.6 implemented & tested on all backends. | 
 |     Removed types and features that require newer versions of GLSL: | 
 |       https://review.skia.org/346657  [Non-square matrices] | 
 |       https://review.skia.org/347046  [uint, short, ushort, byte, ubyte] | 
 |       https://review.skia.org/349056  [while and do-while loops] | 
 |       https://review.skia.org/350030  [Bitwise operators and integer remainder] | 
 |  | 
 |   * Add SkShadowUtils::GetLocalBounds. Generates bounding box for shadows | 
 |     relative to path. | 
 |     https://review.skia.org/351922 | 
 |  | 
 |   * Removed SkPerlinNoiseShader::MakeImprovedNoise. | 
 |     https://review.skia.org/352057 | 
 |  | 
 |   * Removed deprecated version of MakeFromYUVATextures. Use the version | 
 |     that takes GrYUVABackendTextures instead. | 
 |     https://review.skia.org/345174 | 
 |  | 
 |   * SkAnimatedImage: Always respect exif orientation | 
 |     Replace SkPixmapPriv::ShouldSwapWidthHeight with | 
 |     SkEncodedOriginSwapsWidthHeight. | 
 |     https://review.skia.org/344762 | 
 |  | 
 |   * Add kDirectionalLight_ShadowFlag support. If enabled, light position represents | 
 |     a vector pointing towards the light, and light radius is blur radius at elevation 1. | 
 |     https://review.skia.org/321792 | 
 |  | 
 |   * Support GL_LUMINANCE8_ALPHA8 textures. These can be used with GrBackendTexture APIs | 
 |     on GrDirectContext and as planes of YUVA images via GrYUVABackendTextures. | 
 |     https://review.skia.org/344761 | 
 |  | 
 |   * Removed previously deprecated SkImage::MakeFromYUVATexturesCopyToExternal. | 
 |     https://review.skia.org/342077 | 
 |  | 
 |   * Add versions of GrDirectContext::createBackendTexture and updateBackendTexture | 
 |     that take a GrSurfaceOrigin. The previous versions are deprecated. | 
 |     https://review.skia.org/341005 | 
 |  | 
 |   * Remove support for deprecated kDontClipToLayer_SaveLayerFlag in SkCanvas::SaveLayerRec | 
 |     https://review.skia.org/339988 | 
 |  | 
 |   * Expose more info in SkCodec::FrameInfo | 
 |     https://review.skia.org/339857 | 
 |  | 
 |   * Added dither control to the SkImageFilters::Shader factory. | 
 |     https://review.skia.org/338156 | 
 |  | 
 |   * Add MTLBinaryArchive parameter to GrMtlBackendContext. This allows | 
 |     Skia to cache PipelineStates in the given archive for faster | 
 |     shader compiles on future runs. The client must handle loading and | 
 |     saving of the archive. | 
 |     https://review.skia.org/333758 | 
 |  | 
 |   * Deprecated enum SkYUVAInfo::PlanarConfig has been removed. | 
 |     https://review.skia.org/334161 | 
 |  | 
 |   * Deprecated SkImage factories have been removed from | 
 |     SkDeferredDisplayListRecorder. | 
 |  | 
 |   * The following YUV image factories have been removed: | 
 |     SkImage::MakeFromYUVTexturesCopyWithExternalBackend | 
 |     SkImage::MakeFromNV12TexturesCopyWithExternalBackend | 
 |     Replacement pattern outlined below. | 
 |         1) Make image using MakeFromYUVATextures | 
 |         2) Make a SkSurface around result texture using SkSurface::MakeFromBackendTexture | 
 |         3) surface->getCanvas()->drawImage(image, 0, 0); | 
 |         4) surface->flushAndSubmit() | 
 |         5) Optional: SkImage::MakeFromBackendTexture() to use as SkImage. | 
 |     https://review.skia.org/334596 | 
 |  | 
 |   * Added a new interface for GrDirectContext creation in Metal, using | 
 |     a new struct called GrMtlBackendContext. The previous interface taking | 
 |     a MTLDevice and MTLCommandQueue is deprecated. | 
 |     https://review.skia.org/334426 | 
 |  | 
 |   * SkCanvas::flush has been deprecated. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 88 | 
 | ------------ | 
 |  | 
 |   * SkYUVAInfo now has separate enums for division of channels among planes and | 
 |     the subsampling. The previous combined enum, PlanarConfig, is deprecated. | 
 |     https://review.skia.org/334102 | 
 |  | 
 |   * Simplified SkDeferredDisplayListRecorder promise image API. Removed "release" | 
 |     callback and renamed "done" callback to "release". The new "release" proc can | 
 |     be null. Added a new SkYUVAInfo-based factory for YUVA promise texture images | 
 |     and deprecated the old SkYUVAIndex-based one. | 
 |     https://review.skia.org/331836 | 
 |     https://review.skia.org/333519 | 
 |  | 
 |   * Limit the types and intrinsics supported in SkRuntimeEffect to GLSL ES 1.00 | 
 |     https://review.skia.org/332597 | 
 |  | 
 |   * Add AVIF support to SkHeifCodec. | 
 |  | 
 |   * Add support for creating SkSurfaceCharacterizations directly for use by a | 
 |     GrVkSecondaryCBDrawContext. | 
 |     https://review.skia.org/331877 | 
 |  | 
 |   * Removed SkSurfaceProps::kLegacyFontHost_InitType, SkFontLCDConfig, and related code. | 
 |     The default pixel geometry for SkSurfaceProps is now kUnknown instead of kRGB_H. | 
 |     The removal was guarded by the SK_LEGACY_SURFACE_PROPS build flag which was later removed. | 
 |     https://review.skia.org/322490 | 
 |     https://review.skia.org/329364 | 
 |  | 
 |   * Legacy 8-bit YUV interface removed from SkImageGenerator. Use more flexible SkYUVAPixmaps- | 
 |     based interface instead. | 
 |     https://review.skia.org/327917 | 
 |  | 
 |   * New variant of SkImage::MakeFromYUVATextures. Takes a new type GrYUVATextures | 
 |     which wraps an SkYUVAInfo and compatible set of GrBackendTextures. The provides | 
 |     a more complete and structured specification of the planar configuration. Previous | 
 |     version is deprecated. | 
 |     Already deprecated MakeFromYUVATexturesCopyToExternal added to replace other deprecated | 
 |     APIs. It's not recommended that clients use this and instead use the pattern described | 
 |     in the API comment. | 
 |     https://review.skia.org/317762 | 
 |     https://review.skia.org/329956 | 
 |  | 
 |   * Add field to GrContextOptions to disable mipmap support even if the backend | 
 |     supports it. | 
 |  | 
 |   * SkTPin() removed from public API. | 
 |  | 
 |   * Add new SkImageFilters::Blend factory function, in place of the now deprecated | 
 |     SkImageFilters::Xfermode factory function. Behavior is identical, but name better matches | 
 |     conventions in SkShader and SkColorFilter. | 
 |     https://review.skia.org/324623 | 
 |  | 
 |   * SkImageFilters::Foo() factory functions now accept SkIRect, SkRect, and optional SkIRect* or | 
 |     SkRect*, instead of previously just the optional SkIRect*. Internally, the crop rects are stored | 
 |     as floats to allow for fractional crops to be defined in the local coordinate system (before | 
 |     transformation by the canvas matrix). | 
 |     https://review.skia.org/324622 | 
 |  | 
 |   * Add new SkImageFilters::Shader factory and deprecate SkImageFilters::Paint factory. All | 
 |     supported/valid Paint() filters can be represented more cleanly as a Shader image filter. | 
 |     https://review.skia.org/323680 | 
 |  | 
 |   * GrContext has been replaced by two separate classes: GrDirectContext which is | 
 |     the traditional notion of GrContext, and GrRecordingContext which is a context | 
 |     that is recording an SkDeferredDisplayList and therefore has reduced functionality. | 
 |     Unless you are using SkDeferredDisplayList, migrate directly to GrDirectContext in | 
 |     all cases. | 
 |  | 
 |   * CPU sync bool added to SkSurface::flushAndSubmit() and GrContext::flushAndSubmit() | 
 |  | 
 |   * Removed legacy variant of SkImage::MakeFromYUVAPixmaps. Use the version that | 
 |     takes SkYUVAPixmaps instead. It has a more structured description of the | 
 |     planar configuration. | 
 |     https://review.skia.org/322480 | 
 |  | 
 |   * Some SkImage YUV image factories have been removed. Replacement patterns | 
 |     outlined below. | 
 |     SkImage::MakeFromYUVATexturesCopy | 
 |         1) Make SkImage from YUVA planes using SkImage::MakeFromYUVATextures | 
 |         2) Use Skia to allocate a surface using SkSurface::MakeRenderTarget | 
 |         3) surface->getCanvas()->drawImage(image, 0, 0); | 
 |         4) surface->makeImageSnapShot() produces RGBA image. | 
 |     SkImage::MakeFromYUVATexturesCopyWithExternalBackend | 
 |         1) Make image using MakeFromYUVATextures | 
 |         2) Make a SkSurface around result texture using SkSurface::MakeFromBackendTexture | 
 |         3) surface->getCanvas()->drawImage(image, 0, 0); | 
 |         4) surface->flushAndSubmit() | 
 |         5) Optional: SkImage::MakeFromBackendTexture() to use as SkImage. | 
 |     SkImage::MakeFromNV12TexturesCopy | 
 |         Same as SkImage::MakeFromYUVATexturesCopy | 
 |     https://review.skia.org/321537 | 
 |  | 
 |   * GrBackendRenderTargets which are created with a stencilBits param, now require | 
 |     the stencilBits to be 0, 8, or 16. | 
 |     https://review.skia.org/321545 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 87 | 
 | ------------ | 
 |  | 
 |   * GrVkImageInfo now has a field for sample count. GrBackendRenderTarget constructor | 
 |     that took both a GrVkImageInfo and separate sample count is deprecated. Use the | 
 |     version without sample count instead. Similarly, GrD3DTextureResourceInfo now | 
 |     has a sample count field and GrBackendRenderTarget no longer takes a separate | 
 |     sample count for Direct3D. The sample count for GrBackendRenderTarget is now | 
 |     directly queried from MtlTexture rather than passed separately. The version that | 
 |     takes a separate sample count is deprecated and the parameter is ignored. | 
 |     https://review.skia.org/320262 | 
 |     https://review.skia.org/320757 | 
 |     https://review.skia.org/320956 | 
 |  | 
 |   * Added deprecation warning for Metal support on MacOS 10.13, iOS 8.3, and older. | 
 |     https://review.skia.org/320260 | 
 |  | 
 |   * GrVkImageInfo now has a field for sample count. GrBackendRenderTarget constructor | 
 |     that took both a GrVkImageInfo and separate sample count is deprecated. Use the | 
 |     version without sample count instead. | 
 |  | 
 |   * Update SkClipOp::kMax_EnumValue to include only intersect and difference when | 
 |     SK_SUPPORT_DEPRECATED_CLIPOPS is not defined. | 
 |     https://review.skia.org/320064 | 
 |  | 
 |   * Add support for external allocator for Direct3D 12 backend. | 
 |     Defines base classes for an allocation associated with a backend texture and a | 
 |     a memory allocator to create such allocations. | 
 |     Adds memory allocator to backend context. | 
 |     https://review.skia.org/317243 | 
 |  | 
 |   * Add new optional parameter to GrContext::setBackend[Texture/RenderTarget]State which can | 
 |     be used to return the previous GrBackendSurfaceMutableState before the requested change. | 
 |     https://review.skia.org/318698 | 
 |  | 
 |   * New optimized clip stack for GPU backends. Enabled by default but old behavior based on | 
 |     SkClipStack can be restored by defining SK_DISABLE_NEW_GR_CLIP_STACK when building. It is not | 
 |     compatible with SK_SUPPORT_DEPRECATED_CLIPOPS and we are targeting the removal of support for | 
 |     the deprecated, expanding clip ops. | 
 |     https://review.skia.org/317209 | 
 |  | 
 |   * GPU backends now properly honor the SkFilterQuality when calling drawAtlas. | 
 |     https://review.skia.org/313081 | 
 |  | 
 |   * The signature of 'main' used with SkRuntimeEffect SkSL has changed. There is no longer an | 
 |     'inout half4 color' parameter, effects must return their color instead. | 
 |     Valid signatures are now 'half4 main()' or 'half4 main(float2 coord)'. | 
 |     https://review.skia.org/310756 | 
 |  | 
 |   * New YUVA planar specifications for SkCodec, SkImageGenerator, SkImage::MakeFromYUVAPixmaps. | 
 |     Chroma subsampling is specified in more structured way. SkCodec and SkImageGenerator | 
 |     don't assume 3 planes with 8bit planar values. Old APIs are deprecated. | 
 |     https://review.skia.org/309658 | 
 |     https://review.skia.org/312886 | 
 |     https://review.skia.org/314276 | 
 |     https://review.skia.org/316837 | 
 |     https://review.skia.org/317097 | 
 |  | 
 |   * Added VkImageUsageFlags to GrVkImageInfo struct. | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 86 | 
 | ------------ | 
 |  | 
 |   * Remove support for 'in' variables from SkRuntimeEffect. API now exclusively refers to inputs | 
 |     as 'uniforms'. | 
 |     https://review.skia.org/309050 | 
 |  | 
 |   * Add SkImageGeneratorNDK and SkEncodeImageWithNDK for using Android's NDK APIs to decode and | 
 |     encode. | 
 |     https://review.skia.org/308185 | 
 |     https://review.skia.org/308800 | 
 |  | 
 |   * SkImage:remove DecodeToRaster, DecodeToTexture | 
 |     https://review.skia.org/306331 | 
 |  | 
 |   * Add GrContext api to update compressed backend textures. | 
 |     https://review.skia.org/302265 | 
 |  | 
 |   * Rename GrMipMapped to GrMipmapped for consistency with new APIs. | 
 |     Also rename GrBackendTexture::hasMipMaps() to GrBackendTexture::hasMipmaps() | 
 |     https://review.skia.org/304576 | 
 |     https://review.skia.org/304598 | 
 |  | 
 |   * Add option for clients to own semaphores after wait calls. | 
 |     https://review.skia.org/301216 | 
 |  | 
 |   * Remove obsolete GrFlushFlags. | 
 |     https://review.skia.org/298818 | 
 |  | 
 |   * Adds default flush() calls to SkSurface, SkImage, and GrContext. These calls do | 
 |     a basic flush without a submit. If you haven't updated Skia in a couple releases | 
 |     and still have flush() calls in your code that you expect to do a flush and | 
 |     submit, you should update all those to the previously added flushAndSubmit() calls | 
 |     instead. | 
 |     https://review.skia.org/299141 | 
 |  | 
 |   * Enable BackendSemaphores for the Direct3D backend. | 
 |     https://review.skia.org/298752 | 
 |  | 
 |   * Added SkImage:asyncRescaleAndReadPixels and SkImage::asyncRescaleAndReadPixelsYUV420 | 
 |     https://review.skia.org/299281 | 
 |  | 
 |   * Ganesh is moving towards replacing GrContext with the GrDirectContext/GrRecordingContext | 
 |     pair. GrDirectContexts have _direct_ access to the GPU and are very similar to the old | 
 |     GrContext. GrRecordingContexts are less powerful contexts that lack GPU access but provided | 
 |     context-like utilities during DDL recording. SkSurfaces and SkCanvas will now only return | 
 |     GrRecordingContexts. Clients requiring context features that need GPU access can then | 
 |     check (via GrRecordingContext::asDirectContext) if the available recording context is actually | 
 |     a direct context. | 
 |  | 
 |   * Replace #defined values in SkString with equivalent constexprs. | 
 |     http://review.skia.org/306160 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 85 | 
 | ------------ | 
 |  | 
 |   * Added GrContext::oomed() which reports whether Skia has seen a GL_OUT_OF_MEMORY | 
 |     error from Open GL [ES] or VK_ERROR_OUT_OF_*_MEMORY from Vulkan. | 
 |     https://review.skia.org/298216 | 
 |  | 
 |   * Add option on SkSurface::flush to pass in a GrBackendSurfaceMutableState which | 
 |     we will set the gpu backend surface to be at the end of the flush. | 
 |     https://review.skia.org/295567 | 
 |  | 
 |   * Add GrContext function to set mutable state on a backend surface. Currently this | 
 |     is only used for setting vulkan VkImage layout and queue family. | 
 |     https://review.skia.org/293844 | 
 |  | 
 |   * SkSurface factores that take GrBackendTexture or GrBackendRenderTarget now always | 
 |     call the release proc (if provided) on failure. SkSurface::replaceBackendTexture | 
 |     also calls the release proc on failure. | 
 |     https://review.skia.org/293762 | 
 |  | 
 |   * SkSurface::asyncRescaleAndReadPixels and SkSurfaceasyncRescaleAndReadPixelsYUV420 | 
 |     now require explicit GrContext submit to guarantee finite time before callback | 
 |     is invoked. | 
 |     https://review.skia.org/292840 | 
 |  | 
 |   * Add VkSharingMode field to GrVkImageInfo. | 
 |     https://review.skia.org/293559 | 
 |  | 
 |   * Move SkBitmapRegionDecoder into client_utils/android. | 
 |  | 
 |   * SkCanvas.clear and SkCanvas.drawColor now accept SkColor4f in addition to SkColor. | 
 |  | 
 |   * Remove SkSurface::MakeFromBackendTextureAsRenderTarget. | 
 |     This factory existed to work around issues with GL_TEXTURE_RECTANGLE that existed | 
 |     in Chrome's command buffer. Those issues have since been resolved. Use | 
 |     SkSurface::MakeFromBackendTexutre or SkSurface::MakeFromBackendRenderTarget instead. | 
 |     https://review.skia.org/292719 | 
 |  | 
 |   * Adds submittedProc callback to GrFlushInfo which will be called when the work | 
 |     from the flush call is submitted to the GPU. This is specifically useful for knowing | 
 |     when semahpores sent with the flush have been submitted and can be waiting on. | 
 |     https://review.skia.org/291078 | 
 |  | 
 |   * GrContext submit is now required to be called in order to send GPU work to the | 
 |     actual GPU. The flush calls simply produces 3D API specific objects that are ready | 
 |     to be submitted (e.g. command buffers). For the GL backend, the flush will still | 
 |     send commands to the driver. However, clients should still assume the must call | 
 |     submit which is where any glFlush that is need for sync objects will be called. There, | 
 |     are flushAndSubmit() functions of GrContext, SkSurface, and SkImage that will act | 
 |     like the previous flush() functions. This will flush the work and immediately call | 
 |     submit. | 
 |     https://review.skia.org/289033 | 
 |  | 
 |   * Remove deprecated version of flush calls on GrContext and SkSurface. | 
 |     https://review.skia.org/2290540 | 
 |  | 
 |   * SkCanvas::drawVertices and drawPatch now support mapping an SkShader without explicit | 
 |     texture coordinates. If they're not supplied, the local positions (vertex position or | 
 |     patch cubic positions) will be directly used to sample the SkShader. | 
 |     https://review.skia.org/290130 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 84 | 
 | ------------ | 
 |  | 
 |   * Add api on GrContext, updateBackendTexture that will upload new data to a | 
 |     GrBackendTexture. | 
 |     https://review.skia.org/288909 | 
 |  | 
 |   * Add GrContext getter to SkSurface. | 
 |     https://review.skia.org/289479 | 
 |  | 
 |   * Deprecate GrContext and SkSurface flush() call and replace ith with flushAndSubmit(). | 
 |     This only effects the default flush call that takes no parameters. | 
 |     https://review.skia.org/289478 | 
 |  | 
 |   * GrContext::createBackendTexture functions that initialize the texture no longer | 
 |     guarantee that all the data has been uploaded and the gpu is done with the texture. | 
 |     Instead the client can assume the upload work has been submitted to the gpu and they | 
 |     must wait for that work to finish before deleting the texture. This can be done via | 
 |     their own synchronization or by passing in a finish proc into the create calls which | 
 |     will be called when it is safe to delete the texture (at least in terms of work | 
 |     done during the create). | 
 |     https://review.skia.org/286517 | 
 |  | 
 |   * Remove unused SkMaskFilter helpers: compbine, compose | 
 |     Note: shadermaskfilter will likely be removed next (clipShader should serve) | 
 |  | 
 |   * Add back SkCanvas::kPreserveLCDText_SaveLayerFlag to indicate that saveLayer() | 
 |     will preserve LCD-text. All text in the layer must be drawn on opaque background | 
 |     to ensure correct rendering. | 
 |  | 
 |   * Add the new directory client_utils/ for code that is specific to a single client and | 
 |     should be considered separate from Skia proper. Move SkFrontBufferedStream into the | 
 |     subdir android/. | 
 |  | 
 |   * SkBitmap and SkPixmap's erase() methods now treat their color parameters | 
 |     consistently with the rest of Skia, with all SkColors and any untagged | 
 |     SkColor4fs interpreted as sRGB, not as a color in the bitmap's color space. | 
 |     SkPixmap::erase(SkColor4f) now takes an SkColorSpace, so you can pass | 
 |     pixmap.colorSpace() if you want the old behavior. | 
 |  | 
 |   * SkCamera.h and SkMatrix44.h are DEPRECATED. | 
 |     Use SkM44 if you want to have 3d transformations. | 
 |  | 
 |   * Changed Dilate and Erode image filters to take SkScalar for radius instead of int. While | 
 |     the image filters themselves are defined in terms of discrete pixels, the radii provided by | 
 |     the user are mapped through the CTM so taking ints forced over discretization. After mapping | 
 |     through the CTM the radii are now rounded to pixels. | 
 |     https://review.skia.org/281731 | 
 |     https://review.skia.org/282636 | 
 |  | 
 |   * Updated the contract of GrContext and SkSurface flush calls in regards to semaphores. Made it | 
 |     clear that the caller is responsible for deleting any initialized semaphores after the flush | 
 |     call regardless if we were able to submit them or not. Also, allows skia to only submit a | 
 |     subset of the requested semaphores if we failed to create some. | 
 |     https://review.skia.org/282265 | 
 |  | 
 |  | 
 |   * SkCanvas::drawVertices will now always fill the triangles specified by the vertices. Previously, | 
 |     vertices with no colors and no (texture coordinates or shader) would be drawn in wireframe. | 
 |     https://review.skia.org/282043 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 83 | 
 | ------------ | 
 |  | 
 |   * Remove localmatrix option from SkShaders::[Blend, Lerp] | 
 |  | 
 |   * Fill out Direct3D parameters for backend textures and backend rendertargets. | 
 |  | 
 |   * SkImage::makeTextureImage() takes an optional SkBudgeted param | 
 |  | 
 |   * Made non-GL builds of GPU backend more robust. | 
 |     https://review.skia.org/277456 | 
 |  | 
 |   * MoltenVK support removed. Use Metal backend instead. | 
 |     https://review.skia.org/277612 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 82 | 
 | ------------ | 
 |  | 
 |   * Removed drawBitmap and related functions from SkDevice; all public drawBitmap functions on | 
 |     SkCanvas automatically wrap the bitmap in an SkImage and call the equivalent drawImage function. | 
 |     Drawing mutable SkBitmaps will now incur a mandatory copy. Switch to using SkImage directly or | 
 |     mark the bitmap as immutable before drawing. | 
 |  | 
 |   * Removed "volatile" flag from SkVertices. All SkVertices objects are assumed to be | 
 |     volatile (the previous default behavior). | 
 |  | 
 |   * Removed exotic legacy bitmap functions from SkCanvas (drawBitmapLattic, drawBitmapNine); the | 
 |     exotic SkImage functions still exist. | 
 |  | 
 |   * Make it possible to selectively turn on/off individual encoders/decoders, | 
 |     using skia_use_(libpng/libjpeg_turbo/libwebp)(decode/encode). | 
 |  | 
 |   * Removed GrGpuResource, GrSurface, and GrTexture from public api. These were not | 
 |     meant to be public, and we now can move them into src. Also removed getTexture | 
 |     function from SkImage.h | 
 |  | 
 |   * Removed Bones from SkVertices | 
 |  | 
 |   * Added a field to GrContextOptions that controls whether GL errors are checked after | 
 |     GL calls that allocate textures, etc. It also controls checking for shader compile | 
 |     success, and program linking success. | 
 |  | 
 |   * Made SkDeferredDisplayList.h officially part of the public API (i.e., moved it to | 
 |     include/core). Also added a ProgramIterator to SkDeferredDisplayList which allows | 
 |     clients to pre-compile some of the shaders the DDL requires. | 
 |  | 
 |   * Added two new helper methods to SkSurfaceCharacterization: createBackendFormat and | 
 |     createFBO0. These make it easier for clients to create new surface characterizations that | 
 |     differ only a little from an existing surface characterization. | 
 |  | 
 |   * Removed SkTMax and SkTMin. | 
 |   * Removed SkTClamp and SkClampMax. | 
 |   * Removed SkScalarClampMax and SkScalarPin. | 
 |   * Removed SkMax32 and SkMin32. | 
 |   * Removed SkMaxScalar and SkMinScalar. | 
 |  | 
 |   * SkColorSetA now warns if the result is unused. | 
 |  | 
 |   * An SkImageInfo with a null SkColorSpace passed to SkCodec::getPixels() and | 
 |     related calls is treated as a request to do no color correction at decode | 
 |     time. | 
 |  | 
 |   * Add new APIs to add attributes to document structure node when | 
 |     creating a tagged PDF. | 
 |  | 
 |   * Remove CGFontRef parameter from SkCreateTypefaceFromCTFont. | 
 |     Use CTFontManagerCreateFontDescriptorFromData instead of | 
 |     CGFontCreateWithDataProvider to create CTFonts to avoid memory use issues. | 
 |  | 
 |   * Added SkCodec:: and SkAndroidCodec::getICCProfile for reporting the native | 
 |     ICC profile of an encoded image, even if it doesn't map to an SkColorSpace. | 
 |  | 
 |   * SkSurface::ReplaceBackendTexture takes ContentChangeMode as a parameter, | 
 |     which allow callers to specify whether retain a copy of the current content. | 
 |  | 
 |   * Enforce the existing documentation in SkCanvas::saveLayer that it ignores | 
 |     any mask filter on the restore SkPaint. The 'coverage' of a layer is | 
 |     ill-defined, and masking should be handled by pre-clipping or using the | 
 |     auxiliary clip mask image of the SaveLayerRec. | 
 |  | 
 | * * * | 
 |  | 
 | 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 | 
 |  | 
 | * * * | 
 |  | 
 | 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. | 
 |     https://review.skia.org/257921 | 
 |  | 
 |   * 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 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 79 | 
 | ------------ | 
 |  | 
 |   * SkTextBlob::Iter to discover the glyph indices and typefaces in each run | 
 |     https://skia-review.googlesource.com/246296 | 
 |  | 
 |   * Added support for PQ and HLG transfer functions to SkColorSpace. | 
 |     https://skia-review.googlesource.com/c/skia/+/249000 | 
 |  | 
 |   * Added new api on GrContext ComputeImageSize. This replaces the hold static helper | 
 |     ComputeTextureSize. | 
 |     https://skia-review.googlesource.com/c/skia/+/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 | 
 |  | 
 | * * * | 
 |  | 
 | Milestone 78 | 
 | ------------ | 
 |  | 
 |   * 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 | 
 |  | 
 |   * Use GL_QCOM_TILED_RENDERING to explicitly discard stencil | 
 |  | 
 |   * Added RELEASE_NOTES.txt file | 
 |     https://review.skia.org/229760 | 
 |  | 
 |   * Implemented internal support for OpenGL tessellation. |