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skia2/include/effects/SkBitmapSource.h

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Implements a new class, SkSingleInputImageFilter, to handle DAG connectivity for filters with a single image input. This provides functionality to store, flatten and unflatten a single SkImageFilter input, as well as to recursively evaluate it on the CPU or GPU. The following classes were re-parented to implement DAG connectivity: SkBlurImageFilter, SkDilateImageFilter, SkErodeImageFilter, SkColorFilterImageFilter. The constructors for each have been appended with a new parameter, representing the input filter (default NULL). This change also implements an arbitrary SkBitmap input source for filtering, SkBitmapSource. NOTE: This CL will require gyp file changes when rolling past this revision. Review URL: https://codereview.appspot.com/6462071/ git-svn-id: http://skia.googlecode.com/svn/trunk@5170 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-20 14:53:21 +00:00
/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBitmapSource_DEFINED
#define SkBitmapSource_DEFINED
#include "SkImageFilter.h"
#include "SkBitmap.h"
class SK_API SkBitmapSource : public SkImageFilter {
public:
explicit SkBitmapSource(const SkBitmap& bitmap);
Implement srcRect and dstRect functionality in SkBitmapSource. This is required for the "preserveAspectRatio" options of SVG's feImage. Covered by new GM "bitmapsource". This also includes some changes to the xfermodeimagefilter and tileimagefilter GMs to properly handle the CTM. This worked before only because SkBitmapSource was ignoring the CTM. Now that it respects it, we need to give the correct transform. This also means the GMs now work while zoomed. It also implements CTM support for SkTileImageFilter. NOTE: this will require rebaselining a number of imagefilter GMs on Nexus4, since they render in perspective (using the CTM). The changes to the results should all be improvements. R=reed@google.com, robertphillips@google.com Review URL: https://codereview.chromium.org/106933002 git-svn-id: http://skia.googlecode.com/svn/trunk@12571 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-12-09 18:31:42 +00:00
SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect);
Implement a computeFastBounds() traversal for SkImageFilter. This allows for correct culling of primitives which have image filters applied. R=reed@google.com BUG=skia: Review URL: https://codereview.chromium.org/137423005 git-svn-id: http://skia.googlecode.com/svn/trunk@13207 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-01-27 21:03:17 +00:00
virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE;
Implements a new class, SkSingleInputImageFilter, to handle DAG connectivity for filters with a single image input. This provides functionality to store, flatten and unflatten a single SkImageFilter input, as well as to recursively evaluate it on the CPU or GPU. The following classes were re-parented to implement DAG connectivity: SkBlurImageFilter, SkDilateImageFilter, SkErodeImageFilter, SkColorFilterImageFilter. The constructors for each have been appended with a new parameter, representing the input filter (default NULL). This change also implements an arbitrary SkBitmap input source for filtering, SkBitmapSource. NOTE: This CL will require gyp file changes when rolling past this revision. Review URL: https://codereview.appspot.com/6462071/ git-svn-id: http://skia.googlecode.com/svn/trunk@5170 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-20 14:53:21 +00:00
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapSource)
protected:
Refactor read and write buffers. Eliminates SkFlattenable{Read,Write}Buffer, promoting SkOrdered{Read,Write}Buffer a step each in the hierarchy. What used to be this: SkFlattenableWriteBuffer -> SkOrderedWriteBuffer SkFlattenableReadBuffer -> SkOrderedReadBuffer SkFlattenableReadBuffer -> SkValidatingReadBuffer is now SkWriteBuffer SkReadBuffer -> SkValidatingReadBuffer Benefits: - code is simpler, names are less wordy - the generic SkFlattenableFooBuffer code in SkPaint was incorrect; removed - write buffers are completely devirtualized, important for record speed This refactoring was mostly mechanical. You aren't going to find anything interesting in files with less than 10 lines changed. BUG=skia: R=reed@google.com, scroggo@google.com, djsollen@google.com, mtklein@google.com Author: mtklein@chromium.org Review URL: https://codereview.chromium.org/134163010 git-svn-id: http://skia.googlecode.com/svn/trunk@13245 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-01-30 18:58:24 +00:00
explicit SkBitmapSource(SkReadBuffer& buffer);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
Implements a new class, SkSingleInputImageFilter, to handle DAG connectivity for filters with a single image input. This provides functionality to store, flatten and unflatten a single SkImageFilter input, as well as to recursively evaluate it on the CPU or GPU. The following classes were re-parented to implement DAG connectivity: SkBlurImageFilter, SkDilateImageFilter, SkErodeImageFilter, SkColorFilterImageFilter. The constructors for each have been appended with a new parameter, representing the input filter (default NULL). This change also implements an arbitrary SkBitmap input source for filtering, SkBitmapSource. NOTE: This CL will require gyp file changes when rolling past this revision. Review URL: https://codereview.appspot.com/6462071/ git-svn-id: http://skia.googlecode.com/svn/trunk@5170 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-20 14:53:21 +00:00
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
Implement correct clipping for image filters. Image filters in Skia currently clip the size of the the offscreen bitmap used for filtering to the device clip bounds. This means that any pixel-moving filter (e.g., blur) has edge artifacts at the clip boundaries. This is problematic for tiling, where a single SkPicture is played back with a clip set to the tile boundaries. By implementing the onFilterBounds() traversal, and using it in saveLayer() when a filter is present, we can clip the layer to the expanded clip rect. Note that this requires that the traversal be performed in reverse as compared to computeFastBounds(). (It's also done in device space, unlike computeFastBounds()). New test imagefiltersclipped tests pixel-moving filters when clipped by various clip rects. New test imageblurtiled tests tiled (compositor-style) rendering of blurred text. There should be no artifacts at the tile boundaries. BUG=337831 R=reed@google.com Review URL: https://codereview.chromium.org/23011012 git-svn-id: http://skia.googlecode.com/svn/trunk@13323 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-02-05 17:51:22 +00:00
virtual bool onFilterBounds(const SkIRect& src, const SkMatrix& ctm, SkIRect* dst) const SK_OVERRIDE;
Implements a new class, SkSingleInputImageFilter, to handle DAG connectivity for filters with a single image input. This provides functionality to store, flatten and unflatten a single SkImageFilter input, as well as to recursively evaluate it on the CPU or GPU. The following classes were re-parented to implement DAG connectivity: SkBlurImageFilter, SkDilateImageFilter, SkErodeImageFilter, SkColorFilterImageFilter. The constructors for each have been appended with a new parameter, representing the input filter (default NULL). This change also implements an arbitrary SkBitmap input source for filtering, SkBitmapSource. NOTE: This CL will require gyp file changes when rolling past this revision. Review URL: https://codereview.appspot.com/6462071/ git-svn-id: http://skia.googlecode.com/svn/trunk@5170 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-20 14:53:21 +00:00
private:
SkBitmap fBitmap;
Implement srcRect and dstRect functionality in SkBitmapSource. This is required for the "preserveAspectRatio" options of SVG's feImage. Covered by new GM "bitmapsource". This also includes some changes to the xfermodeimagefilter and tileimagefilter GMs to properly handle the CTM. This worked before only because SkBitmapSource was ignoring the CTM. Now that it respects it, we need to give the correct transform. This also means the GMs now work while zoomed. It also implements CTM support for SkTileImageFilter. NOTE: this will require rebaselining a number of imagefilter GMs on Nexus4, since they render in perspective (using the CTM). The changes to the results should all be improvements. R=reed@google.com, robertphillips@google.com Review URL: https://codereview.chromium.org/106933002 git-svn-id: http://skia.googlecode.com/svn/trunk@12571 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-12-09 18:31:42 +00:00
SkRect fSrcRect, fDstRect;
Implements a new class, SkSingleInputImageFilter, to handle DAG connectivity for filters with a single image input. This provides functionality to store, flatten and unflatten a single SkImageFilter input, as well as to recursively evaluate it on the CPU or GPU. The following classes were re-parented to implement DAG connectivity: SkBlurImageFilter, SkDilateImageFilter, SkErodeImageFilter, SkColorFilterImageFilter. The constructors for each have been appended with a new parameter, representing the input filter (default NULL). This change also implements an arbitrary SkBitmap input source for filtering, SkBitmapSource. NOTE: This CL will require gyp file changes when rolling past this revision. Review URL: https://codereview.appspot.com/6462071/ git-svn-id: http://skia.googlecode.com/svn/trunk@5170 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-20 14:53:21 +00:00
typedef SkImageFilter INHERITED;
};
#endif
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