SkDebugger.cpp revision 57f74e0aa931e7784d47cba3ecc83020aa8e72b2 
1
2/*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#include "SkDebugger.h"
10#include "SkString.h"
11
12
13SkDebugger::SkDebugger() {
14    // Create this some other dynamic way?
15    fDebugCanvas = new SkDebugCanvas(100, 100);
16    fPicture = NULL;
17    fPictureWidth = 0;
18    fPictureHeight = 0;
19    fIndex = 0;
20}
21
22SkDebugger::~SkDebugger() {
23    // Need to inherit from SkRef object in order for following to work
24    SkSafeUnref(fDebugCanvas);
25    SkSafeUnref(fPicture);
26}
27
28void SkDebugger::loadPicture(SkPicture* picture) {
29    fPictureWidth = picture->width();
30    fPictureHeight = picture->height();
31    delete fDebugCanvas;
32    fDebugCanvas = new SkDebugCanvas(fPictureWidth, fPictureHeight);
33    fDebugCanvas->setBounds(fPictureWidth, fPictureHeight);
34    fDebugCanvas->setPicture(picture);
35    picture->draw(fDebugCanvas);
36    fDebugCanvas->setPicture(NULL);
37    fIndex = fDebugCanvas->getSize() - 1;
38    SkRefCnt_SafeAssign(fPicture, picture);
39}
40
41SkPicture* SkDebugger::copyPicture() {
42    // We can't just call clone here since we want to removed the "deleted"
43    // commands. Playing back will strip those out.
44    SkPicture* newPicture = new SkPicture;
45    SkCanvas* canvas = newPicture->beginRecording(fPictureWidth, fPictureHeight);
46
47    bool vizMode = fDebugCanvas->getMegaVizMode();
48    fDebugCanvas->setMegaVizMode(false);
49    bool overDraw = fDebugCanvas->getOverdrawViz();
50    fDebugCanvas->setOverdrawViz(false);
51    int saveCount = fDebugCanvas->getOutstandingSaveCount();
52    fDebugCanvas->setOutstandingSaveCount(0);
53
54    fDebugCanvas->draw(canvas);
55
56    int temp = fDebugCanvas->getOutstandingSaveCount();
57    for (int i = 0; i < temp; ++i) {
58        canvas->restore();
59    }
60
61    fDebugCanvas->setMegaVizMode(vizMode);
62    fDebugCanvas->setOverdrawViz(overDraw);
63    fDebugCanvas->setOutstandingSaveCount(saveCount);
64
65    newPicture->endRecording();
66    return newPicture;
67}
68
69void SkDebugger::getOverviewText(const SkTDArray<double>* typeTimes,
70                                 double totTime,
71                                 SkString* overview,
72                                 int numRuns) {
73    const SkTDArray<SkDrawCommand*>& commands = this->getDrawCommands();
74
75    SkTDArray<int> counts;
76    counts.setCount(LAST_DRAWTYPE_ENUM+1);
77    for (int i = 0; i < LAST_DRAWTYPE_ENUM+1; ++i) {
78        counts[i] = 0;
79    }
80
81    for (int i = 0; i < commands.count(); i++) {
82        counts[commands[i]->getType()]++;
83    }
84
85    overview->reset();
86    int total = 0;
87#ifdef SK_DEBUG
88    double totPercent = 0, tempSum = 0;
89#endif
90    for (int i = 0; i < LAST_DRAWTYPE_ENUM+1; ++i) {
91        if (0 == counts[i]) {
92            // if there were no commands of this type then they should've consumed no time
93            SkASSERT(NULL == typeTimes || 0.0 == (*typeTimes)[i]);
94            continue;
95        }
96
97        overview->append(SkDrawCommand::GetCommandString((DrawType) i));
98        overview->append(": ");
99        overview->appendS32(counts[i]);
100        if (NULL != typeTimes && totTime >= 0.0) {
101            overview->append(" - ");
102            overview->appendf("%.2f", (*typeTimes)[i]/(float)numRuns);
103            overview->append("ms");
104            overview->append(" - ");
105            double percent = 100.0*(*typeTimes)[i]/totTime;
106            overview->appendf("%.2f", percent);
107            overview->append("%");
108#ifdef SK_DEBUG
109            totPercent += percent;
110            tempSum += (*typeTimes)[i];
111#endif
112        }
113        overview->append("<br/>");
114        total += counts[i];
115    }
116#ifdef SK_DEBUG
117    if (NULL != typeTimes) {
118        SkASSERT(SkScalarNearlyEqual(SkDoubleToScalar(totPercent),
119                                     SkDoubleToScalar(100.0)));
120        SkASSERT(SkScalarNearlyEqual(SkDoubleToScalar(tempSum),
121                                     SkDoubleToScalar(totTime)));
122    }
123#endif
124
125    if (totTime > 0.0) {
126        overview->append("Total Time: ");
127        overview->appendf("%.2f", totTime/(float)numRuns);
128        overview->append("ms");
129#ifdef SK_DEBUG
130        overview->append(" ");
131        overview->appendScalar(SkDoubleToScalar(totPercent));
132        overview->append("% ");
133#endif
134        overview->append("<br/>");
135    }
136
137    SkString totalStr;
138    totalStr.append("Total Draw Commands: ");
139    totalStr.appendScalar(SkDoubleToScalar(total));
140    totalStr.append("<br/>");
141    overview->insert(0, totalStr);
142
143    overview->append("<br/>");
144    overview->append("SkPicture Width: ");
145    overview->appendS32(pictureWidth());
146    overview->append("px<br/>");
147    overview->append("SkPicture Height: ");
148    overview->appendS32(pictureHeight());
149    overview->append("px");
150}
151