SkDebugger.cpp revision 84b18c7e3e042bf206e1ace3d1b6ea5bb929fe51 
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    SkPictureRecorder recorder;
45    SkCanvas* canvas = recorder.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    return recorder.endRecording();
66}
67
68void SkDebugger::getOverviewText(const SkTDArray<double>* typeTimes,
69                                 double totTime,
70                                 SkString* overview,
71                                 int numRuns) {
72    const SkTDArray<SkDrawCommand*>& commands = this->getDrawCommands();
73
74    SkTDArray<int> counts;
75    counts.setCount(LAST_DRAWTYPE_ENUM+1);
76    for (int i = 0; i < LAST_DRAWTYPE_ENUM+1; ++i) {
77        counts[i] = 0;
78    }
79
80    for (int i = 0; i < commands.count(); i++) {
81        counts[commands[i]->getType()]++;
82    }
83
84    overview->reset();
85    int total = 0;
86#ifdef SK_DEBUG
87    double totPercent = 0, tempSum = 0;
88#endif
89    for (int i = 0; i < LAST_DRAWTYPE_ENUM+1; ++i) {
90        if (0 == counts[i]) {
91            // if there were no commands of this type then they should've consumed no time
92            SkASSERT(NULL == typeTimes || 0.0 == (*typeTimes)[i]);
93            continue;
94        }
95
96        overview->append(SkDrawCommand::GetCommandString((DrawType) i));
97        overview->append(": ");
98        overview->appendS32(counts[i]);
99        if (NULL != typeTimes && totTime >= 0.0) {
100            overview->append(" - ");
101            overview->appendf("%.2f", (*typeTimes)[i]/(float)numRuns);
102            overview->append("ms");
103            overview->append(" - ");
104            double percent = 100.0*(*typeTimes)[i]/totTime;
105            overview->appendf("%.2f", percent);
106            overview->append("%");
107#ifdef SK_DEBUG
108            totPercent += percent;
109            tempSum += (*typeTimes)[i];
110#endif
111        }
112        overview->append("<br/>");
113        total += counts[i];
114    }
115#ifdef SK_DEBUG
116    if (NULL != typeTimes) {
117        SkASSERT(SkScalarNearlyEqual(SkDoubleToScalar(totPercent),
118                                     SkDoubleToScalar(100.0)));
119        SkASSERT(SkScalarNearlyEqual(SkDoubleToScalar(tempSum),
120                                     SkDoubleToScalar(totTime)));
121    }
122#endif
123
124    if (totTime > 0.0) {
125        overview->append("Total Time: ");
126        overview->appendf("%.2f", totTime/(float)numRuns);
127        overview->append("ms");
128#ifdef SK_DEBUG
129        overview->append(" ");
130        overview->appendScalar(SkDoubleToScalar(totPercent));
131        overview->append("% ");
132#endif
133        overview->append("<br/>");
134    }
135
136    SkString totalStr;
137    totalStr.append("Total Draw Commands: ");
138    totalStr.appendScalar(SkDoubleToScalar(total));
139    totalStr.append("<br/>");
140    overview->insert(0, totalStr);
141
142    overview->append("<br/>");
143    overview->append("SkPicture Width: ");
144    overview->appendS32(pictureWidth());
145    overview->append("px<br/>");
146    overview->append("SkPicture Height: ");
147    overview->appendS32(pictureHeight());
148    overview->append("px");
149}
150