DisplayListRenderer.cpp revision ada830f639591b99c3e40de22b07296c7932a33f 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include "DisplayListRenderer.h"
20
21namespace android {
22namespace uirenderer {
23
24///////////////////////////////////////////////////////////////////////////////
25// Defines
26///////////////////////////////////////////////////////////////////////////////
27
28#define PATH_HEAP_SIZE 64
29
30///////////////////////////////////////////////////////////////////////////////
31// Helpers
32///////////////////////////////////////////////////////////////////////////////
33
34PathHeap::PathHeap(): mHeap(PATH_HEAP_SIZE * sizeof(SkPath)) {
35}
36
37PathHeap::PathHeap(SkFlattenableReadBuffer& buffer): mHeap(PATH_HEAP_SIZE * sizeof(SkPath)) {
38    int count = buffer.readS32();
39
40    mPaths.setCount(count);
41    SkPath** ptr = mPaths.begin();
42    SkPath* p = (SkPath*) mHeap.allocThrow(count * sizeof(SkPath));
43
44    for (int i = 0; i < count; i++) {
45        new (p) SkPath;
46        p->unflatten(buffer);
47        *ptr++ = p;
48        p++;
49    }
50}
51
52PathHeap::~PathHeap() {
53    SkPath** iter = mPaths.begin();
54    SkPath** stop = mPaths.end();
55    while (iter < stop) {
56        (*iter)->~SkPath();
57        iter++;
58    }
59}
60
61int PathHeap::append(const SkPath& path) {
62    SkPath* p = (SkPath*) mHeap.allocThrow(sizeof(SkPath));
63    new (p) SkPath(path);
64    *mPaths.append() = p;
65    return mPaths.count();
66}
67
68void PathHeap::flatten(SkFlattenableWriteBuffer& buffer) const {
69    int count = mPaths.count();
70
71    buffer.write32(count);
72    SkPath** iter = mPaths.begin();
73    SkPath** stop = mPaths.end();
74    while (iter < stop) {
75        (*iter)->flatten(buffer);
76        iter++;
77    }
78}
79
80///////////////////////////////////////////////////////////////////////////////
81// Display list
82///////////////////////////////////////////////////////////////////////////////
83
84DisplayList::DisplayList(const DisplayListRenderer& recorder) {
85    initFromDisplayListRenderer(recorder);
86}
87
88DisplayList::~DisplayList() {
89    sk_free((void*) mReader.base());
90
91    Caches& caches = Caches::getInstance();
92
93    for (size_t i = 0; i < mBitmapResources.size(); i++) {
94        caches.resourceCache.decrementRefcount(mBitmapResources.itemAt(i));
95    }
96    mBitmapResources.clear();
97
98    for (size_t i = 0; i < mShaderResources.size(); i++) {
99        caches.resourceCache.decrementRefcount(mShaderResources.itemAt(i));
100    }
101    mShaderResources.clear();
102
103    for (size_t i = 0; i < mPaints.size(); i++) {
104        delete mPaints.itemAt(i);
105    }
106    mPaints.clear();
107
108    for (size_t i = 0; i < mMatrices.size(); i++) {
109        delete mMatrices.itemAt(i);
110    }
111    mMatrices.clear();
112
113    if (mPathHeap) {
114        for (int i = 0; i < mPathHeap->count(); i++) {
115            caches.pathCache.removeDeferred(&(*mPathHeap)[i]);
116        }
117        mPathHeap->safeUnref();
118    }
119}
120
121void DisplayList::initFromDisplayListRenderer(const DisplayListRenderer& recorder) {
122    const SkWriter32& writer = recorder.writeStream();
123    init();
124
125    if (writer.size() == 0) {
126        return;
127    }
128
129    size_t size = writer.size();
130    void* buffer = sk_malloc_throw(size);
131    writer.flatten(buffer);
132    mReader.setMemory(buffer, size);
133
134    mRCPlayback.reset(&recorder.mRCRecorder);
135    mRCPlayback.setupBuffer(mReader);
136
137    mTFPlayback.reset(&recorder.mTFRecorder);
138    mTFPlayback.setupBuffer(mReader);
139
140    Caches& caches = Caches::getInstance();
141
142    const Vector<SkBitmap*> &bitmapResources = recorder.getBitmapResources();
143    for (size_t i = 0; i < bitmapResources.size(); i++) {
144        SkBitmap* resource = bitmapResources.itemAt(i);
145        mBitmapResources.add(resource);
146        caches.resourceCache.incrementRefcount(resource);
147    }
148
149    const Vector<SkiaShader*> &shaderResources = recorder.getShaderResources();
150    for (size_t i = 0; i < shaderResources.size(); i++) {
151        SkiaShader* resource = shaderResources.itemAt(i);
152        mShaderResources.add(resource);
153        caches.resourceCache.incrementRefcount(resource);
154    }
155
156    const Vector<SkPaint*> &paints = recorder.getPaints();
157    for (size_t i = 0; i < paints.size(); i++) {
158        mPaints.add(paints.itemAt(i));
159    }
160
161    const Vector<SkMatrix*> &matrices = recorder.getMatrices();
162    for (size_t i = 0; i < matrices.size(); i++) {
163        mMatrices.add(matrices.itemAt(i));
164    }
165
166    mPathHeap = recorder.mPathHeap;
167    if (mPathHeap) {
168        mPathHeap->safeRef();
169    }
170}
171
172void DisplayList::init() {
173    mPathHeap = NULL;
174}
175
176void DisplayList::replay(OpenGLRenderer& renderer) {
177    TextContainer text;
178    mReader.rewind();
179
180    int saveCount = renderer.getSaveCount() - 1;
181
182    while (!mReader.eof()) {
183        int op = mReader.readInt();
184        switch (op) {
185            case AcquireContext: {
186                renderer.acquireContext();
187            }
188            break;
189            case ReleaseContext: {
190                renderer.releaseContext();
191            }
192            break;
193            case Save: {
194                renderer.save(getInt());
195            }
196            break;
197            case Restore: {
198                renderer.restore();
199            }
200            break;
201            case RestoreToCount: {
202                renderer.restoreToCount(saveCount + getInt());
203            }
204            break;
205            case SaveLayer: {
206                renderer.saveLayer(getFloat(), getFloat(), getFloat(), getFloat(),
207                        getPaint(), getInt());
208            }
209            break;
210            case SaveLayerAlpha: {
211                renderer.saveLayerAlpha(getFloat(), getFloat(), getFloat(), getFloat(),
212                        getInt(), getInt());
213            }
214            break;
215            case Translate: {
216                renderer.translate(getFloat(), getFloat());
217            }
218            break;
219            case Rotate: {
220                renderer.rotate(getFloat());
221            }
222            break;
223            case Scale: {
224                renderer.scale(getFloat(), getFloat());
225            }
226            break;
227            case SetMatrix: {
228                renderer.setMatrix(getMatrix());
229            }
230            break;
231            case ConcatMatrix: {
232                renderer.concatMatrix(getMatrix());
233            }
234            break;
235            case ClipRect: {
236                renderer.clipRect(getFloat(), getFloat(), getFloat(), getFloat(),
237                        (SkRegion::Op) getInt());
238            }
239            break;
240            case DrawDisplayList: {
241                renderer.drawDisplayList(getDisplayList());
242            }
243            break;
244            case DrawLayer: {
245                renderer.drawLayer((Layer*) getInt(), getFloat(), getFloat(), getPaint());
246            }
247            break;
248            case DrawBitmap: {
249                renderer.drawBitmap(getBitmap(), getFloat(), getFloat(), getPaint());
250            }
251            break;
252            case DrawBitmapMatrix: {
253                renderer.drawBitmap(getBitmap(), getMatrix(), getPaint());
254            }
255            break;
256            case DrawBitmapRect: {
257                renderer.drawBitmap(getBitmap(), getFloat(), getFloat(), getFloat(), getFloat(),
258                        getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
259            }
260            break;
261            case DrawPatch: {
262                int32_t* xDivs = NULL;
263                int32_t* yDivs = NULL;
264                uint32_t* colors = NULL;
265                uint32_t xDivsCount = 0;
266                uint32_t yDivsCount = 0;
267                int8_t numColors = 0;
268
269                SkBitmap* bitmap = getBitmap();
270
271                xDivs = getInts(xDivsCount);
272                yDivs = getInts(yDivsCount);
273                colors = getUInts(numColors);
274
275                renderer.drawPatch(bitmap, xDivs, yDivs, colors, xDivsCount, yDivsCount,
276                        numColors, getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
277            }
278            break;
279            case DrawColor: {
280                renderer.drawColor(getInt(), (SkXfermode::Mode) getInt());
281            }
282            break;
283            case DrawRect: {
284                renderer.drawRect(getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
285            }
286            break;
287            case DrawPath: {
288                renderer.drawPath(getPath(), getPaint());
289            }
290            break;
291            case DrawLines: {
292                int count = 0;
293                float* points = getFloats(count);
294                renderer.drawLines(points, count, getPaint());
295            }
296            break;
297            case DrawText: {
298                getText(&text);
299                renderer.drawText(text.text(), text.length(), getInt(),
300                        getFloat(), getFloat(), getPaint());
301            }
302            break;
303            case ResetShader: {
304                renderer.resetShader();
305            }
306            break;
307            case SetupShader: {
308                renderer.setupShader(getShader());
309            }
310            break;
311            case ResetColorFilter: {
312                renderer.resetColorFilter();
313            }
314            break;
315            case SetupColorFilter: {
316                renderer.setupColorFilter(getColorFilter());
317            }
318            break;
319            case ResetShadow: {
320                renderer.resetShadow();
321            }
322            break;
323            case SetupShadow: {
324                renderer.setupShadow(getFloat(), getFloat(), getFloat(), getInt());
325            }
326            break;
327        }
328    }
329}
330
331///////////////////////////////////////////////////////////////////////////////
332// Base structure
333///////////////////////////////////////////////////////////////////////////////
334
335DisplayListRenderer::DisplayListRenderer():
336        mHeap(HEAP_BLOCK_SIZE), mWriter(MIN_WRITER_SIZE) {
337    mPathHeap = NULL;
338    mDisplayList = NULL;
339}
340
341DisplayListRenderer::~DisplayListRenderer() {
342    reset();
343}
344
345void DisplayListRenderer::reset() {
346    if (mPathHeap) {
347        mPathHeap->unref();
348        mPathHeap = NULL;
349    }
350
351    mWriter.reset();
352    mHeap.reset();
353
354    mRCRecorder.reset();
355    mTFRecorder.reset();
356
357    Caches& caches = Caches::getInstance();
358    for (size_t i = 0; i < mBitmapResources.size(); i++) {
359        SkBitmap* resource = mBitmapResources.itemAt(i);
360        caches.resourceCache.decrementRefcount(resource);
361    }
362    mBitmapResources.clear();
363
364    for (size_t i = 0; i < mShaderResources.size(); i++) {
365        SkiaShader* resource = mShaderResources.itemAt(i);
366        caches.resourceCache.decrementRefcount(resource);
367    }
368    mShaderResources.clear();
369
370    mPaints.clear();
371    mPaintMap.clear();
372    mMatrices.clear();
373}
374
375///////////////////////////////////////////////////////////////////////////////
376// Operations
377///////////////////////////////////////////////////////////////////////////////
378
379DisplayList* DisplayListRenderer::getDisplayList() {
380    if (mDisplayList == NULL) {
381        mDisplayList = new DisplayList(*this);
382    } else {
383        mDisplayList->initFromDisplayListRenderer(*this);
384    }
385    return mDisplayList;
386}
387
388void DisplayListRenderer::setViewport(int width, int height) {
389    mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1);
390
391    mWidth = width;
392    mHeight = height;
393}
394
395void DisplayListRenderer::prepare(bool opaque) {
396    mSnapshot = new Snapshot(mFirstSnapshot,
397            SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
398    mSaveCount = 1;
399    mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight);
400}
401
402void DisplayListRenderer::acquireContext() {
403    addOp(DisplayList::AcquireContext);
404    OpenGLRenderer::acquireContext();
405}
406
407void DisplayListRenderer::releaseContext() {
408    addOp(DisplayList::ReleaseContext);
409    OpenGLRenderer::releaseContext();
410}
411
412int DisplayListRenderer::save(int flags) {
413    addOp(DisplayList::Save);
414    addInt(flags);
415    return OpenGLRenderer::save(flags);
416}
417
418void DisplayListRenderer::restore() {
419    addOp(DisplayList::Restore);
420    OpenGLRenderer::restore();
421}
422
423void DisplayListRenderer::restoreToCount(int saveCount) {
424    addOp(DisplayList::RestoreToCount);
425    addInt(saveCount);
426    OpenGLRenderer::restoreToCount(saveCount);
427}
428
429int DisplayListRenderer::saveLayer(float left, float top, float right, float bottom,
430        SkPaint* p, int flags) {
431    addOp(DisplayList::SaveLayer);
432    addBounds(left, top, right, bottom);
433    addPaint(p);
434    addInt(flags);
435    return OpenGLRenderer::save(flags);
436}
437
438int DisplayListRenderer::saveLayerAlpha(float left, float top, float right, float bottom,
439        int alpha, int flags) {
440    addOp(DisplayList::SaveLayerAlpha);
441    addBounds(left, top, right, bottom);
442    addInt(alpha);
443    addInt(flags);
444    return OpenGLRenderer::save(flags);
445}
446
447void DisplayListRenderer::translate(float dx, float dy) {
448    addOp(DisplayList::Translate);
449    addPoint(dx, dy);
450    OpenGLRenderer::translate(dx, dy);
451}
452
453void DisplayListRenderer::rotate(float degrees) {
454    addOp(DisplayList::Rotate);
455    addFloat(degrees);
456    OpenGLRenderer::rotate(degrees);
457}
458
459void DisplayListRenderer::scale(float sx, float sy) {
460    addOp(DisplayList::Scale);
461    addPoint(sx, sy);
462    OpenGLRenderer::scale(sx, sy);
463}
464
465void DisplayListRenderer::setMatrix(SkMatrix* matrix) {
466    addOp(DisplayList::SetMatrix);
467    addMatrix(matrix);
468    OpenGLRenderer::setMatrix(matrix);
469}
470
471void DisplayListRenderer::concatMatrix(SkMatrix* matrix) {
472    addOp(DisplayList::ConcatMatrix);
473    addMatrix(matrix);
474    OpenGLRenderer::concatMatrix(matrix);
475}
476
477bool DisplayListRenderer::clipRect(float left, float top, float right, float bottom,
478        SkRegion::Op op) {
479    addOp(DisplayList::ClipRect);
480    addBounds(left, top, right, bottom);
481    addInt(op);
482    return OpenGLRenderer::clipRect(left, top, right, bottom, op);
483}
484
485void DisplayListRenderer::drawDisplayList(DisplayList* displayList) {
486    addOp(DisplayList::DrawDisplayList);
487    addDisplayList(displayList);
488}
489
490void DisplayListRenderer::drawLayer(Layer* layer, float x, float y, SkPaint* paint) {
491    addOp(DisplayList::DrawLayer);
492    addInt((int) layer);
493    addPoint(x, y);
494    addPaint(paint);
495}
496
497void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, float left, float top,
498        SkPaint* paint) {
499    addOp(DisplayList::DrawBitmap);
500    addBitmap(bitmap);
501    addPoint(left, top);
502    addPaint(paint);
503}
504
505void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, SkMatrix* matrix,
506        SkPaint* paint) {
507    addOp(DisplayList::DrawBitmapMatrix);
508    addBitmap(bitmap);
509    addMatrix(matrix);
510    addPaint(paint);
511}
512
513void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, float srcLeft, float srcTop,
514        float srcRight, float srcBottom, float dstLeft, float dstTop,
515        float dstRight, float dstBottom, SkPaint* paint) {
516    addOp(DisplayList::DrawBitmapRect);
517    addBitmap(bitmap);
518    addBounds(srcLeft, srcTop, srcRight, srcBottom);
519    addBounds(dstLeft, dstTop, dstRight, dstBottom);
520    addPaint(paint);
521}
522
523void DisplayListRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs,
524        const uint32_t* colors, uint32_t width, uint32_t height, int8_t numColors,
525        float left, float top, float right, float bottom, SkPaint* paint) {
526    addOp(DisplayList::DrawPatch);
527    addBitmap(bitmap);
528    addInts(xDivs, width);
529    addInts(yDivs, height);
530    addUInts(colors, numColors);
531    addBounds(left, top, right, bottom);
532    addPaint(paint);
533}
534
535void DisplayListRenderer::drawColor(int color, SkXfermode::Mode mode) {
536    addOp(DisplayList::DrawColor);
537    addInt(color);
538    addInt(mode);
539}
540
541void DisplayListRenderer::drawRect(float left, float top, float right, float bottom,
542        SkPaint* paint) {
543    addOp(DisplayList::DrawRect);
544    addBounds(left, top, right, bottom);
545    addPaint(paint);
546}
547
548void DisplayListRenderer::drawPath(SkPath* path, SkPaint* paint) {
549    addOp(DisplayList::DrawPath);
550    addPath(path);
551    addPaint(paint);
552}
553
554void DisplayListRenderer::drawLines(float* points, int count, SkPaint* paint) {
555    addOp(DisplayList::DrawLines);
556    addFloats(points, count);
557    addPaint(paint);
558}
559
560void DisplayListRenderer::drawText(const char* text, int bytesCount, int count,
561        float x, float y, SkPaint* paint) {
562    addOp(DisplayList::DrawText);
563    addText(text, bytesCount);
564    addInt(count);
565    addPoint(x, y);
566    addPaint(paint);
567}
568
569void DisplayListRenderer::resetShader() {
570    addOp(DisplayList::ResetShader);
571}
572
573void DisplayListRenderer::setupShader(SkiaShader* shader) {
574    addOp(DisplayList::SetupShader);
575    addShader(shader);
576}
577
578void DisplayListRenderer::resetColorFilter() {
579    addOp(DisplayList::ResetColorFilter);
580}
581
582void DisplayListRenderer::setupColorFilter(SkiaColorFilter* filter) {
583    addOp(DisplayList::SetupColorFilter);
584    addColorFilter(filter);
585}
586
587void DisplayListRenderer::resetShadow() {
588    addOp(DisplayList::ResetShadow);
589}
590
591void DisplayListRenderer::setupShadow(float radius, float dx, float dy, int color) {
592    addOp(DisplayList::SetupShadow);
593    addFloat(radius);
594    addPoint(dx, dy);
595    addInt(color);
596}
597
598}; // namespace uirenderer
599}; // namespace android
600