blob: a730697d62d580fa736c1d453378afa0062d641e [file] [log] [blame]
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +00001/*
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
16class GPUAccelData : public SkPicture::AccelData {
17public:
18 // Information about a given saveLayer in an SkPicture
19 struct SaveLayerInfo {
commit-bot@chromium.org0205aba2014-05-06 12:02:22 +000020 // True if the SaveLayerInfo is valid. False if either 'fOffset' is
21 // invalid (due to a non-invertible CTM) or 'fPaint' is NULL (due
22 // to a non-copyable paint).
23 bool fValid;
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000024 // The size of the saveLayer
25 SkISize fSize;
commit-bot@chromium.org0205aba2014-05-06 12:02:22 +000026 // The CTM in which this layer's draws must occur. It already incorporates
27 // the translation needed to map the layer's top-left point to the origin.
28 SkMatrix fCTM;
29 // The offset that needs to be passed to drawBitmap to correctly
commit-bot@chromium.orgf97d65d2014-05-08 23:24:05 +000030 // position the pre-rendered layer. It is in device space.
31 SkIPoint fOffset;
commit-bot@chromium.org0205aba2014-05-06 12:02:22 +000032 // The paint to use on restore. NULL if the paint was not copyable (and
33 // thus that this layer should not be pulled forward).
34 const SkPaint* fPaint;
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000035 // The ID of this saveLayer in the picture. 0 is an invalid ID.
36 size_t fSaveLayerOpID;
37 // The ID of the matching restore in the picture. 0 is an invalid ID.
38 size_t fRestoreOpID;
39 // True if this saveLayer has at least one other saveLayer nested within it.
40 // False otherwise.
41 bool fHasNestedLayers;
commit-bot@chromium.org0205aba2014-05-06 12:02:22 +000042 // True if this saveLayer is nested within another. False otherwise.
43 bool fIsNested;
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000044 };
45
46 GPUAccelData(Key key) : INHERITED(key) { }
47
commit-bot@chromium.org8fd93822014-05-06 13:43:22 +000048 virtual ~GPUAccelData() {
49 for (int i = 0; i < fSaveLayerInfo.count(); ++i) {
50 SkDELETE(fSaveLayerInfo[i].fPaint);
51 }
52 }
53
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000054 void addSaveLayerInfo(const SaveLayerInfo& info) {
55 SkASSERT(info.fSaveLayerOpID < info.fRestoreOpID);
56 *fSaveLayerInfo.push() = info;
57 }
58
59 int numSaveLayers() const { return fSaveLayerInfo.count(); }
60
61 const SaveLayerInfo& saveLayerInfo(int index) const {
62 SkASSERT(index < fSaveLayerInfo.count());
63
64 return fSaveLayerInfo[index];
65 }
66
commit-bot@chromium.org0205aba2014-05-06 12:02:22 +000067 // We may, in the future, need to pass in the GPUDevice in order to
68 // incorporate the clip and matrix state into the key
69 static SkPicture::AccelData::Key ComputeAccelDataKey();
70
robertphillips@google.combeb1af22014-05-07 21:31:09 +000071private:
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000072 SkTDArray<SaveLayerInfo> fSaveLayerInfo;
73
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000074 typedef SkPicture::AccelData INHERITED;
75};
76
robertphillips9b14f262014-06-04 05:40:44 -070077void GatherGPUInfo(const SkPicture* pict, GPUAccelData* accelData);
commit-bot@chromium.org8ddc26b2014-03-31 17:55:12 +000078
79#endif // GrPictureUtils_DEFINED