diff options
author | sugoi@google.com <sugoi@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-01-15 15:40:19 +0000 |
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committer | sugoi@google.com <sugoi@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-01-15 15:40:19 +0000 |
commit | 781cc76e0f1ebb06e0796a9237045ae9d4bddd21 (patch) | |
tree | 24a1f691a04e448651aa92bc44a5fa65155049b3 /include/effects | |
parent | d53025364a8062b5c72f3f9ed54a613a1ae17958 (diff) |
Implementation of the displacement effect (both CPU and GPU)
TEST=Added new GM called "displacement"
Review URL: https://codereview.appspot.com/7058075
git-svn-id: http://skia.googlecode.com/svn/trunk@7182 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'include/effects')
-rw-r--r-- | include/effects/SkDisplacementMapEffect.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/effects/SkDisplacementMapEffect.h b/include/effects/SkDisplacementMapEffect.h new file mode 100644 index 0000000000..641b4cbee4 --- /dev/null +++ b/include/effects/SkDisplacementMapEffect.h @@ -0,0 +1,54 @@ +/* + * Copyright 2013 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SkDisplacementMapEffect_DEFINED +#define SkDisplacementMapEffect_DEFINED + +#include "SkImageFilter.h" +#include "SkBitmap.h" + +class SK_API SkDisplacementMapEffect : public SkImageFilter { +public: + enum ChannelSelectorType { + kUnknown_ChannelSelectorType, + kR_ChannelSelectorType, + kG_ChannelSelectorType, + kB_ChannelSelectorType, + kA_ChannelSelectorType, + kKeyBits = 3 // Max value is 4, so 3 bits are required at most + }; + + SkDisplacementMapEffect(ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, SkScalar scale, SkImageFilter* displacement, SkImageFilter* color = NULL); + + ~SkDisplacementMapEffect(); + + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDisplacementMapEffect) + + virtual bool onFilterImage(Proxy* proxy, + const SkBitmap& src, + const SkMatrix& ctm, + SkBitmap* dst, + SkIPoint* offset) SK_OVERRIDE; +#if SK_SUPPORT_GPU + virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } + virtual GrTexture* filterImageGPU(Proxy* proxy, GrTexture* src, const SkRect& rect) SK_OVERRIDE; +#endif + +protected: + explicit SkDisplacementMapEffect(SkFlattenableReadBuffer& buffer); + virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; + +private: + ChannelSelectorType fXChannelSelector; + ChannelSelectorType fYChannelSelector; + SkScalar fScale; + typedef SkImageFilter INHERITED; + SkImageFilter* getDisplacementInput() { return getInput(0); } + SkImageFilter* getColorInput() { return getInput(1); } +}; + +#endif |