Skia Graphics Release Notes
This file includes a list of high level updates for each milestone release.
Clients now need to register codecs which Skia should use to decode raw bytes. For example:
SkCodecs::Register(SkJpegDecoder::Decoder());. Skia still provides many supported formats (see
include/codec/*Decoder.h). Clients are free to specify their own, either supplementing the existing set or using a custom version instead of the one previously provided by default by Skia. See
SkCodecs::Decoder for the necessary data to provide when using a custom decoder (in
To ease the transition, Skia will continue (for a short while) to register codecs unless
SK_DISABLE_LEGACY_INIT_DECODERS is defined.
SkDrawable::newPictureSnapshot is removed. Instead, call
SkDrawable::makePictureSnapshot. The old method returned a bare (but ref-counted) pointer, which was easy for clients to get wrong. The new method returns an
sk_sp<SkPicture>, which is easier to handle, and consistent with the rest of skia.
SkGraphics::PurgePinnedFontCache() has been added to allow clients to explicitly trigger
SkStrikeCache purge checks for
SkStrikes with pinners. Defining
SK_STRIKE_CACHE_DOESNT_AUTO_CHECK_PINNERS in the user configuration now disables automatic purge checking of strikes with pinners.
The following SkImage factories have been moved to
SkImage::MakeGraphiteFromBackendTexture -> SkImages::AdoptTextureFrom
SkImage::MakeGraphiteFromYUVABackendTextures -> SkImages::TextureFromYUVATextures
SkImage::MakeGraphiteFromYUVAPixmaps -> SkImages::TextureFromYUVAPixmaps
SkImage::MakeGraphitePromiseTexture -> SkImages::PromiseTextureFrom
The SkImage method
makeTextureImage has been moved to
SkImage::RequiredImageProperties has been renamed to
SkImage::RequiredProperties, with fMipmapped turned into a boolean instead of the GPU enum.
SkImage::makeColorTypeAndColorSpace now take a
GrDirectContext as the first parameter. This should be supplied when dealing with texture-backed images and can be
SkImage::subset now takes a
GrDirectContext* as its first parameter (this can be
nullptr for non-gpu backed images. Images which are backed by a codec or picture will not be turned into a GPU texture before being read. This should only impact picture-backed images, which may not be read correctly if the picture contain nested texture-backed images itself. To force a conversion to a texture, clients should call
SkImages::TextureFromImage, passing in the image, and then call subset on the result. Documentation has been clarified that
SkImage::subset will return a raster- backed image if the source is not backed by a texture, and texture-otherwise.
SkImages::SubsetTextureFrom has been added to subset an image and explicitly return a texture- backed image. This allows some optimizations, especially for large images that exceed a maximum texture size of a GPU.
SkImage::makeNonTextureImage now take a
GrDirectContext* which clients should supply for reading-back pixels from texture-backed images.
SkImageFilters::Image now returns a non-null image filter if the input
sk_sp<SkImage> is null or the src rectangle is empty or does not overlap the image. The returned filter evaluates to transparent black, which is equivalent to a null or empty image. Previously, returning a null image filter would mean that the dynamic source image could be surprisingly injected into the filter evaluation where it might not have been intended.
SkImageFilters::Magnifier(srcRect, inset) is deprecated. These parameters do not provide enough information for the implementation to correctly respond to canvas transform or participate accurately in layer bounds planning.
SkImageFilters::Magnifier function is added that takes additional parameters: the outer lens bounds and the actual zoom amount (instead of inconsistently reconstructing the target zoom amount, which was the prior behavior). Additionally, the new factory accepts an SkSamplingOptions to control the sampling quality.
SkImageFilters::Picture now returns a non-null image filter if the input
sk_sp<SkPicture> is null. The returned filter evaluates to transparent black, which is equivalent to a null or empty picture. Previously, returning a null image filter would mean that the dynamic source image could be surprisingly injected into the filter evaluation where it might not have been intended.
SkImageFilters::Shader now returns a non-null image filter if the input
sk_sp<SkShader> is null. The returned filter evaluates to transparent black, which is equivalent to a null or empty shader. Previously, returning a null image filter would mean that the dynamic source image could be surprisingly injected into the filter evaluation where it might not have been intended.
SkImageGenerator::MakeFromEncoded has been removed from the public API.
SkCodec::MakeFromData should be used instead.
SkSurface::getBackendRenderTarget have been deprecated and replaced with
SkSurfaces::GetBackendRenderTarget respectively. These are found in
include/gpu/ganesh/SkSurfaceGanesh.h. The supporting enum
BackendHandleAccess has also been moved to
SkSurfaces::BackendHandleAccess as an enum class, with shorter member names.
SkSurface factory methods have been moved to the SkSurfaces namespace. Many have been renamed to be more succinct or self-consistent. Factory methods specific to the Ganesh GPU backend are defined publicly in include/gpu/ganesh/SkSurfaceGanesh.h. The Metal Ganesh backend has some specific factories in include/gpu/ganesh/mtl/SkSurfaceMetal.h.
SkGradientShader::Interpolationstruct to the shader factory functions. The color space and hue method options are based on the CSS Color Level 4 specfication:
SkImages::GetBackendTextureFromImagehas been renamed
SkImage::getBackendTexture()has been moved to
SkImage::makeTextureImage()has been moved to
SkImage::flushAndSubmit()has been moved to
SkSurfaceProperties::kAlwaysDither_Flagadded to globally enable dithering for a specific
SkDeserialImageProcare now also used to encode/decode the SkMipmap layers of certain SkImages.
SK_USE_CG_ENCODERhave been removed, as well as the code to use the Windows Image Codecs and Core Graphics as a way to have Skia encode files in PNG, JPEG, and WEBP format. Skia continues to support use of the NDK codecs on Android, as well as using external C++ libraries (e.g. libpng, libjpeg-turbo) to encode images. WIC and CG are still used to decode images on the appropriate platforms.
SkImage::encodeToDatahas been deprecated. Clients should use
refEncodedDataif the image was from an encoded bytestream or one of
skia_use_libwebp_encodeOther clients should make sure the appropriate
src/encodeare included in the build.
SkImageEncoderhas been removed. Clients should use one of
SkImageGeneratorhas a new subclass
GrTextureGeneratorwhich can be used if clients want to provide specialized ways of making Ganesh texture-backed Images.
SkImageGenerator::MakeFromPicturehas been removed from the public API. Clients should be drawing the picture directly instead of turning it into an image first.
SkImage::CompressionTypehas been renamed to
SkTextureCompressionTypeand moved to
SkPngChunkReader.hare now in include/codec
SkICC.his now in include/encode
skia-minify output-file.sksl input-file.skslto write a minified version of the runtime shader “input-file.sksl” into a file named “output-file.sksl”. By default, sksl-minify expects a shader, but you can also pass command line options
--blenderif your program is a color-filter or a blender. A compile error will be printed to stdout if an error is found in the program.
half4 main(float2 coords, half4 color). This was disallowed at Milestone 87, but the restriction was inadvertently relaxed in later milestones. Going forward, we will only accept a shader signature of
half4 main(float2 coords).
makeShaderfunctions associated with
SkRuntimeEffectno longer take an
isOpaqueparameter. 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
returnstatement in your shader with a swizzle:
return color.rgb1;. https://review.skia.org/506462
toLinearSrgbconverts a color to the sRGB color gamut, with a linear transfer function.
fromLinearSrgbconverts 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
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
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
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
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
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::particleUniformInfo, there is just
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:
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
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.
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
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.
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
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
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
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
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.
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
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
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
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
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:
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.