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| 1 /* |
| 2 * Copyright 2014 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrPictureUtils_DEFINED |
| 9 #define GrPictureUtils_DEFINED |
| 10 |
| 11 #include "SkPicture.h" |
| 12 #include "SkTDArray.h" |
| 13 |
| 14 // This class encapsulates the GPU-backend-specific acceleration data |
| 15 // for a single SkPicture |
| 16 class GPUAccelData : public SkPicture::AccelData { |
| 17 public: |
| 18 // Information about a given saveLayer in an SkPicture |
| 19 struct SaveLayerInfo { |
| 20 // The size of the saveLayer |
| 21 SkISize fSize; |
| 22 // The ID of this saveLayer in the picture. 0 is an invalid ID. |
| 23 size_t fSaveLayerOpID; |
| 24 // The ID of the matching restore in the picture. 0 is an invalid ID. |
| 25 size_t fRestoreOpID; |
| 26 // True if this saveLayer has at least one other saveLayer nested within
it. |
| 27 // False otherwise. |
| 28 bool fHasNestedLayers; |
| 29 }; |
| 30 |
| 31 GPUAccelData(Key key) : INHERITED(key) { } |
| 32 |
| 33 void addSaveLayerInfo(const SaveLayerInfo& info) { |
| 34 SkASSERT(info.fSaveLayerOpID < info.fRestoreOpID); |
| 35 *fSaveLayerInfo.push() = info; |
| 36 } |
| 37 |
| 38 int numSaveLayers() const { return fSaveLayerInfo.count(); } |
| 39 |
| 40 const SaveLayerInfo& saveLayerInfo(int index) const { |
| 41 SkASSERT(index < fSaveLayerInfo.count()); |
| 42 |
| 43 return fSaveLayerInfo[index]; |
| 44 } |
| 45 |
| 46 protected: |
| 47 SkTDArray<SaveLayerInfo> fSaveLayerInfo; |
| 48 |
| 49 private: |
| 50 typedef SkPicture::AccelData INHERITED; |
| 51 }; |
| 52 |
| 53 void GatherGPUInfo(SkPicture* pict, GPUAccelData* accelData); |
| 54 |
| 55 #endif // GrPictureUtils_DEFINED |
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