DisplayListRenderer.cpp revision 4bb942083a0d4db746adf95349108dd8ef842e32 
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    const SkWriter32& writer = recorder.writeStream();
86    init();
87
88    if (writer.size() == 0) {
89        return;
90    }
91
92    size_t size = writer.size();
93    void* buffer = sk_malloc_throw(size);
94    writer.flatten(buffer);
95    mReader.setMemory(buffer, size);
96
97    mRCPlayback.reset(&recorder.mRCRecorder);
98    mRCPlayback.setupBuffer(mReader);
99
100    mTFPlayback.reset(&recorder.mTFRecorder);
101    mTFPlayback.setupBuffer(mReader);
102
103    const SkTDArray<const SkFlatBitmap*>& bitmaps = recorder.getBitmaps();
104    mBitmapCount = bitmaps.count();
105    if (mBitmapCount > 0) {
106        mBitmaps = new SkBitmap[mBitmapCount];
107        for (const SkFlatBitmap** flatBitmapPtr = bitmaps.begin();
108                flatBitmapPtr != bitmaps.end(); flatBitmapPtr++) {
109            const SkFlatBitmap* flatBitmap = *flatBitmapPtr;
110            int index = flatBitmap->index() - 1;
111            flatBitmap->unflatten(&mBitmaps[index], &mRCPlayback);
112        }
113    }
114
115    const SkTDArray<const SkFlatMatrix*>& matrices = recorder.getMatrices();
116    mMatrixCount = matrices.count();
117    if (mMatrixCount > 0) {
118        mMatrices = new SkMatrix[mMatrixCount];
119        for (const SkFlatMatrix** matrixPtr = matrices.begin();
120                matrixPtr != matrices.end(); matrixPtr++) {
121            const SkFlatMatrix* flatMatrix = *matrixPtr;
122            flatMatrix->unflatten(&mMatrices[flatMatrix->index() - 1]);
123        }
124    }
125
126    const SkTDArray<const SkFlatPaint*>& paints = recorder.getPaints();
127    mPaintCount = paints.count();
128    if (mPaintCount > 0) {
129        mPaints = new SkPaint[mPaintCount];
130        for (const SkFlatPaint** flatPaintPtr = paints.begin();
131                flatPaintPtr != paints.end(); flatPaintPtr++) {
132            const SkFlatPaint* flatPaint = *flatPaintPtr;
133            int index = flatPaint->index() - 1;
134            flatPaint->unflatten(&mPaints[index], &mRCPlayback, &mTFPlayback);
135        }
136    }
137
138    mPathHeap = recorder.mPathHeap;
139    mPathHeap->safeRef();
140}
141
142DisplayList::~DisplayList() {
143    sk_free((void*) mReader.base());
144
145    Caches& caches = Caches::getInstance();
146    for (int i = 0; i < mBitmapCount; i++) {
147        caches.textureCache.remove(&mBitmaps[i]);
148    }
149
150    delete[] mBitmaps;
151    delete[] mMatrices;
152    delete[] mPaints;
153
154    mPathHeap->safeUnref();
155}
156
157void DisplayList::init() {
158    mBitmaps = NULL;
159    mMatrices = NULL;
160    mPaints = NULL;
161    mPathHeap = NULL;
162    mBitmapCount = mMatrixCount = mPaintCount = 0;
163}
164
165void DisplayList::replay(OpenGLRenderer& renderer) {
166    TextContainer text;
167    mReader.rewind();
168
169    int saveCount = renderer.getSaveCount() - 1;
170
171    while (!mReader.eof()) {
172        switch (mReader.readInt()) {
173            case AcquireContext: {
174                renderer.acquireContext();
175            }
176            break;
177            case ReleaseContext: {
178                renderer.releaseContext();
179            }
180            break;
181            case Save: {
182                renderer.save(getInt());
183            }
184            break;
185            case Restore: {
186                renderer.restore();
187            }
188            break;
189            case RestoreToCount: {
190                renderer.restoreToCount(saveCount + getInt());
191            }
192            break;
193            case SaveLayer: {
194                renderer.saveLayer(getFloat(), getFloat(), getFloat(), getFloat(),
195                        getPaint(), getInt());
196            }
197            break;
198            case Translate: {
199                renderer.translate(getFloat(), getFloat());
200            }
201            break;
202            case Rotate: {
203                renderer.rotate(getFloat());
204            }
205            break;
206            case Scale: {
207                renderer.scale(getFloat(), getFloat());
208            }
209            break;
210            case SetMatrix: {
211                renderer.setMatrix(getMatrix());
212            }
213            break;
214            case ConcatMatrix: {
215                renderer.concatMatrix(getMatrix());
216            }
217            break;
218            case ClipRect: {
219                renderer.clipRect(getFloat(), getFloat(), getFloat(), getFloat(),
220                        (SkRegion::Op) getInt());
221            }
222            break;
223            case DrawBitmap: {
224                renderer.drawBitmap(getBitmap(), getFloat(), getFloat(), getPaint());
225            }
226            break;
227            case DrawBitmapMatrix: {
228                renderer.drawBitmap(getBitmap(), getMatrix(), getPaint());
229            }
230            break;
231            case DrawBitmapRect: {
232                renderer.drawBitmap(getBitmap(), getFloat(), getFloat(), getFloat(), getFloat(),
233                        getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
234            }
235            break;
236            case DrawPatch: {
237                int32_t* xDivs = NULL;
238                int32_t* yDivs = NULL;
239                uint32_t* colors = NULL;
240                uint32_t xDivsCount = 0;
241                uint32_t yDivsCount = 0;
242                int8_t numColors = 0;
243
244                SkBitmap* bitmap = getBitmap();
245
246                xDivs = getInts(xDivsCount);
247                yDivs = getInts(yDivsCount);
248                colors = getUInts(numColors);
249
250                renderer.drawPatch(bitmap, xDivs, yDivs, colors, xDivsCount, yDivsCount,
251                        numColors, getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
252            }
253            break;
254            case DrawColor: {
255                renderer.drawColor(getInt(), (SkXfermode::Mode) getInt());
256            }
257            break;
258            case DrawRect: {
259                renderer.drawRect(getFloat(), getFloat(), getFloat(), getFloat(), getPaint());
260            }
261            break;
262            case DrawPath: {
263                renderer.drawPath(getPath(), getPaint());
264            }
265            break;
266            case DrawLines: {
267                int count = 0;
268                float* points = getFloats(count);
269                renderer.drawLines(points, count, getPaint());
270            }
271            break;
272            case DrawText: {
273                getText(&text);
274                renderer.drawText(text.text(), text.length(), getInt(),
275                        getFloat(), getFloat(), getPaint());
276            }
277            break;
278            case ResetShader: {
279                renderer.resetShader();
280            }
281            break;
282            case SetupShader: {
283                // TODO: Implement
284            }
285            break;
286            case ResetColorFilter: {
287                renderer.resetColorFilter();
288            }
289            break;
290            case SetupColorFilter: {
291                // TODO: Implement
292            }
293            break;
294            case ResetShadow: {
295                renderer.resetShadow();
296            }
297            break;
298            case SetupShadow: {
299                renderer.setupShadow(getFloat(), getFloat(), getFloat(), getInt());
300            }
301            break;
302        }
303    }
304}
305
306///////////////////////////////////////////////////////////////////////////////
307// Base structure
308///////////////////////////////////////////////////////////////////////////////
309
310DisplayListRenderer::DisplayListRenderer():
311        mHeap(HEAP_BLOCK_SIZE), mWriter(MIN_WRITER_SIZE) {
312    mBitmapIndex = mMatrixIndex = mPaintIndex = 1;
313    mPathHeap = NULL;
314}
315
316DisplayListRenderer::~DisplayListRenderer() {
317    reset();
318}
319
320void DisplayListRenderer::reset() {
321    if (mPathHeap) {
322        mPathHeap->unref();
323        mPathHeap = NULL;
324    }
325
326    mBitmaps.reset();
327    mMatrices.reset();
328    mPaints.reset();
329
330    mWriter.reset();
331    mHeap.reset();
332
333    mRCRecorder.reset();
334    mTFRecorder.reset();
335}
336
337///////////////////////////////////////////////////////////////////////////////
338// Operations
339///////////////////////////////////////////////////////////////////////////////
340
341void DisplayListRenderer::setViewport(int width, int height) {
342    mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1);
343
344    mWidth = width;
345    mHeight = height;
346}
347
348void DisplayListRenderer::prepare(bool opaque) {
349    mSnapshot = new Snapshot(mFirstSnapshot,
350            SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
351    mSaveCount = 1;
352    mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight);
353}
354
355void DisplayListRenderer::acquireContext() {
356    addOp(DisplayList::AcquireContext);
357    OpenGLRenderer::acquireContext();
358}
359
360void DisplayListRenderer::releaseContext() {
361    addOp(DisplayList::ReleaseContext);
362    OpenGLRenderer::releaseContext();
363}
364
365int DisplayListRenderer::save(int flags) {
366    addOp(DisplayList::Save);
367    addInt(flags);
368    return OpenGLRenderer::save(flags);
369}
370
371void DisplayListRenderer::restore() {
372    addOp(DisplayList::Restore);
373    OpenGLRenderer::restore();
374}
375
376void DisplayListRenderer::restoreToCount(int saveCount) {
377    addOp(DisplayList::RestoreToCount);
378    addInt(saveCount);
379    OpenGLRenderer::restoreToCount(saveCount);
380}
381
382int DisplayListRenderer::saveLayer(float left, float top, float right, float bottom,
383        const SkPaint* p, int flags) {
384    addOp(DisplayList::SaveLayer);
385    addBounds(left, top, right, bottom);
386    addPaint(p);
387    addInt(flags);
388    return OpenGLRenderer::save(flags);
389}
390
391void DisplayListRenderer::translate(float dx, float dy) {
392    addOp(DisplayList::Translate);
393    addPoint(dx, dy);
394    OpenGLRenderer::translate(dx, dy);
395}
396
397void DisplayListRenderer::rotate(float degrees) {
398    addOp(DisplayList::Rotate);
399    addFloat(degrees);
400    OpenGLRenderer::rotate(degrees);
401}
402
403void DisplayListRenderer::scale(float sx, float sy) {
404    addOp(DisplayList::Scale);
405    addPoint(sx, sy);
406    OpenGLRenderer::scale(sx, sy);
407}
408
409void DisplayListRenderer::setMatrix(SkMatrix* matrix) {
410    addOp(DisplayList::SetMatrix);
411    addMatrix(matrix);
412    OpenGLRenderer::setMatrix(matrix);
413}
414
415void DisplayListRenderer::concatMatrix(SkMatrix* matrix) {
416    addOp(DisplayList::ConcatMatrix);
417    addMatrix(matrix);
418    OpenGLRenderer::concatMatrix(matrix);
419}
420
421bool DisplayListRenderer::clipRect(float left, float top, float right, float bottom,
422        SkRegion::Op op) {
423    addOp(DisplayList::ClipRect);
424    addBounds(left, top, right, bottom);
425    addInt(op);
426    return OpenGLRenderer::clipRect(left, top, right, bottom, op);
427}
428
429void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, float left, float top,
430        const SkPaint* paint) {
431    addOp(DisplayList::DrawBitmap);
432    addBitmap(bitmap);
433    addPoint(left, top);
434    addPaint(paint);
435}
436
437void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix,
438        const SkPaint* paint) {
439    addOp(DisplayList::DrawBitmapMatrix);
440    addBitmap(bitmap);
441    addMatrix(matrix);
442    addPaint(paint);
443}
444
445void DisplayListRenderer::drawBitmap(SkBitmap* bitmap, float srcLeft, float srcTop,
446        float srcRight, float srcBottom, float dstLeft, float dstTop,
447        float dstRight, float dstBottom, const SkPaint* paint) {
448    addOp(DisplayList::DrawBitmapRect);
449    addBitmap(bitmap);
450    addBounds(srcLeft, srcTop, srcRight, srcBottom);
451    addBounds(dstLeft, dstTop, dstRight, dstBottom);
452    addPaint(paint);
453}
454
455void DisplayListRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs,
456        const uint32_t* colors, uint32_t width, uint32_t height, int8_t numColors,
457        float left, float top, float right, float bottom, const SkPaint* paint) {
458    addOp(DisplayList::DrawPatch);
459    addBitmap(bitmap);
460    addInts(xDivs, width);
461    addInts(yDivs, height);
462    addUInts(colors, numColors);
463    addBounds(left, top, right, bottom);
464    addPaint(paint);
465}
466
467void DisplayListRenderer::drawColor(int color, SkXfermode::Mode mode) {
468    addOp(DisplayList::DrawColor);
469    addInt(color);
470    addInt(mode);
471}
472
473void DisplayListRenderer::drawRect(float left, float top, float right, float bottom,
474        const SkPaint* paint) {
475    addOp(DisplayList::DrawRect);
476    addBounds(left, top, right, bottom);
477    addPaint(paint);
478}
479
480void DisplayListRenderer::drawPath(SkPath* path, SkPaint* paint) {
481    addOp(DisplayList::DrawPath);
482    addPath(path);
483    addPaint(paint);
484}
485
486void DisplayListRenderer::drawLines(float* points, int count, const SkPaint* paint) {
487    addOp(DisplayList::DrawLines);
488    addFloats(points, count);
489    addPaint(paint);
490}
491
492void DisplayListRenderer::drawText(const char* text, int bytesCount, int count,
493        float x, float y, SkPaint* paint) {
494    addOp(DisplayList::DrawText);
495    addText(text, bytesCount);
496    addInt(count);
497    addPoint(x, y);
498    addPaint(paint);
499}
500
501void DisplayListRenderer::resetShader() {
502    addOp(DisplayList::ResetShader);
503    OpenGLRenderer::resetShader();
504}
505
506void DisplayListRenderer::setupShader(SkiaShader* shader) {
507    // TODO: Implement
508    OpenGLRenderer::setupShader(shader);
509}
510
511void DisplayListRenderer::resetColorFilter() {
512    addOp(DisplayList::ResetColorFilter);
513    OpenGLRenderer::resetColorFilter();
514}
515
516void DisplayListRenderer::setupColorFilter(SkiaColorFilter* filter) {
517    // TODO: Implement
518    OpenGLRenderer::setupColorFilter(filter);
519}
520
521void DisplayListRenderer::resetShadow() {
522    addOp(DisplayList::ResetShadow);
523    OpenGLRenderer::resetShadow();
524}
525
526void DisplayListRenderer::setupShadow(float radius, float dx, float dy, int color) {
527    addOp(DisplayList::SetupShadow);
528    addFloat(radius);
529    addPoint(dx, dy);
530    addInt(color);
531    OpenGLRenderer::setupShadow(radius, dx, dy, color);
532}
533
534///////////////////////////////////////////////////////////////////////////////
535// Recording management
536///////////////////////////////////////////////////////////////////////////////
537
538int DisplayListRenderer::find(SkTDArray<const SkFlatPaint*>& paints, const SkPaint* paint) {
539    if (paint == NULL) {
540        return 0;
541    }
542
543    SkFlatPaint* flat = SkFlatPaint::Flatten(&mHeap, *paint, mPaintIndex,
544            &mRCRecorder, &mTFRecorder);
545    int index = SkTSearch<SkFlatData>((const SkFlatData**) paints.begin(),
546            paints.count(), (SkFlatData*) flat, sizeof(flat), &SkFlatData::Compare);
547    if (index >= 0) {
548        (void) mHeap.unalloc(flat);
549        return paints[index]->index();
550    }
551
552    index = ~index;
553    *paints.insert(index) = flat;
554    return mPaintIndex++;
555}
556
557int DisplayListRenderer::find(SkTDArray<const SkFlatMatrix*>& matrices, const SkMatrix* matrix) {
558    if (matrix == NULL) {
559        return 0;
560    }
561
562    SkFlatMatrix* flat = SkFlatMatrix::Flatten(&mHeap, *matrix, mMatrixIndex);
563    int index = SkTSearch<SkFlatData>((const SkFlatData**) matrices.begin(),
564            matrices.count(), (SkFlatData*) flat, sizeof(flat), &SkFlatData::Compare);
565    if (index >= 0) {
566        (void) mHeap.unalloc(flat);
567        return matrices[index]->index();
568    }
569    index = ~index;
570    *matrices.insert(index) = flat;
571    return mMatrixIndex++;
572}
573
574int DisplayListRenderer::find(SkTDArray<const SkFlatBitmap*>& bitmaps, const SkBitmap& bitmap) {
575    SkFlatBitmap* flat = SkFlatBitmap::Flatten(&mHeap, bitmap, mBitmapIndex, &mRCRecorder);
576    int index = SkTSearch<SkFlatData>((const SkFlatData**) bitmaps.begin(),
577            bitmaps.count(), (SkFlatData*) flat, sizeof(flat), &SkFlatData::Compare);
578    if (index >= 0) {
579        (void) mHeap.unalloc(flat);
580        return bitmaps[index]->index();
581    }
582    index = ~index;
583    *bitmaps.insert(index) = flat;
584    return mBitmapIndex++;
585}
586
587}; // namespace uirenderer
588}; // namespace android
589