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      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 #ifndef ANDROID_HWUI_DISPLAY_LIST_RENDERER_H
     18 #define ANDROID_HWUI_DISPLAY_LIST_RENDERER_H
     19 
     20 #include <SkMatrix.h>
     21 #include <SkPaint.h>
     22 #include <SkPath.h>
     23 #include <cutils/compiler.h>
     24 
     25 #include "DisplayList.h"
     26 #include "DisplayListLogBuffer.h"
     27 #include "OpenGLRenderer.h"
     28 
     29 namespace android {
     30 namespace uirenderer {
     31 
     32 ///////////////////////////////////////////////////////////////////////////////
     33 // Defines
     34 ///////////////////////////////////////////////////////////////////////////////
     35 
     36 #define MIN_WRITER_SIZE 4096
     37 #define OP_MAY_BE_SKIPPED_MASK 0xff000000
     38 
     39 // Debug
     40 #if DEBUG_DISPLAY_LIST
     41     #define DISPLAY_LIST_LOGD(...) ALOGD(__VA_ARGS__)
     42 #else
     43     #define DISPLAY_LIST_LOGD(...)
     44 #endif
     45 
     46 ///////////////////////////////////////////////////////////////////////////////
     47 // Display list
     48 ///////////////////////////////////////////////////////////////////////////////
     49 
     50 class DeferredDisplayList;
     51 class DisplayListRenderer;
     52 class DisplayListOp;
     53 class DrawOp;
     54 class StateOp;
     55 
     56 /**
     57  * Records drawing commands in a display list for latter playback.
     58  */
     59 class DisplayListRenderer: public OpenGLRenderer {
     60 public:
     61     ANDROID_API DisplayListRenderer();
     62     virtual ~DisplayListRenderer();
     63 
     64     ANDROID_API DisplayList* getDisplayList(DisplayList* displayList);
     65 
     66     virtual bool isDeferred();
     67 
     68     virtual void setViewport(int width, int height);
     69     virtual status_t prepareDirty(float left, float top, float right, float bottom, bool opaque);
     70     virtual void finish();
     71 
     72     virtual status_t callDrawGLFunction(Functor *functor, Rect& dirty);
     73 
     74     virtual void interrupt();
     75     virtual void resume();
     76 
     77     virtual int save(int flags);
     78     virtual void restore();
     79     virtual void restoreToCount(int saveCount);
     80 
     81     virtual int saveLayer(float left, float top, float right, float bottom,
     82             int alpha, SkXfermode::Mode mode, int flags);
     83 
     84     virtual void translate(float dx, float dy);
     85     virtual void rotate(float degrees);
     86     virtual void scale(float sx, float sy);
     87     virtual void skew(float sx, float sy);
     88 
     89     virtual void setMatrix(SkMatrix* matrix);
     90     virtual void concatMatrix(SkMatrix* matrix);
     91 
     92     virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op);
     93     virtual bool clipPath(SkPath* path, SkRegion::Op op);
     94     virtual bool clipRegion(SkRegion* region, SkRegion::Op op);
     95 
     96     virtual status_t drawDisplayList(DisplayList* displayList, Rect& dirty, int32_t flags);
     97     virtual status_t drawLayer(Layer* layer, float x, float y);
     98     virtual status_t drawBitmap(SkBitmap* bitmap, float left, float top, SkPaint* paint);
     99     virtual status_t drawBitmap(SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint);
    100     virtual status_t drawBitmap(SkBitmap* bitmap, float srcLeft, float srcTop,
    101             float srcRight, float srcBottom, float dstLeft, float dstTop,
    102             float dstRight, float dstBottom, SkPaint* paint);
    103     virtual status_t drawBitmapData(SkBitmap* bitmap, float left, float top, SkPaint* paint);
    104     virtual status_t drawBitmapMesh(SkBitmap* bitmap, int meshWidth, int meshHeight,
    105             float* vertices, int* colors, SkPaint* paint);
    106     virtual status_t drawPatch(SkBitmap* bitmap, Res_png_9patch* patch,
    107             float left, float top, float right, float bottom, SkPaint* paint);
    108     virtual status_t drawColor(int color, SkXfermode::Mode mode);
    109     virtual status_t drawRect(float left, float top, float right, float bottom, SkPaint* paint);
    110     virtual status_t drawRoundRect(float left, float top, float right, float bottom,
    111             float rx, float ry, SkPaint* paint);
    112     virtual status_t drawCircle(float x, float y, float radius, SkPaint* paint);
    113     virtual status_t drawOval(float left, float top, float right, float bottom, SkPaint* paint);
    114     virtual status_t drawArc(float left, float top, float right, float bottom,
    115             float startAngle, float sweepAngle, bool useCenter, SkPaint* paint);
    116     virtual status_t drawPath(SkPath* path, SkPaint* paint);
    117     virtual status_t drawLines(float* points, int count, SkPaint* paint);
    118     virtual status_t drawPoints(float* points, int count, SkPaint* paint);
    119     virtual status_t drawTextOnPath(const char* text, int bytesCount, int count, SkPath* path,
    120             float hOffset, float vOffset, SkPaint* paint);
    121     virtual status_t drawPosText(const char* text, int bytesCount, int count,
    122             const float* positions, SkPaint* paint);
    123     virtual status_t drawText(const char* text, int bytesCount, int count, float x, float y,
    124             const float* positions, SkPaint* paint, float totalAdvance, const Rect& bounds,
    125             DrawOpMode drawOpMode);
    126 
    127     virtual status_t drawRects(const float* rects, int count, SkPaint* paint);
    128 
    129     virtual void resetShader();
    130     virtual void setupShader(SkiaShader* shader);
    131 
    132     virtual void resetColorFilter();
    133     virtual void setupColorFilter(SkiaColorFilter* filter);
    134 
    135     virtual void resetShadow();
    136     virtual void setupShadow(float radius, float dx, float dy, int color);
    137 
    138     virtual void resetPaintFilter();
    139     virtual void setupPaintFilter(int clearBits, int setBits);
    140 
    141     ANDROID_API void reset();
    142 
    143     sp<DisplayListData> getDisplayListData() const {
    144         return mDisplayListData;
    145     }
    146 
    147     const Vector<SkBitmap*>& getBitmapResources() const {
    148         return mBitmapResources;
    149     }
    150 
    151     const Vector<SkBitmap*>& getOwnedBitmapResources() const {
    152         return mOwnedBitmapResources;
    153     }
    154 
    155     const Vector<SkiaColorFilter*>& getFilterResources() const {
    156         return mFilterResources;
    157     }
    158 
    159     const Vector<Res_png_9patch*>& getPatchResources() const {
    160         return mPatchResources;
    161     }
    162 
    163     const Vector<SkiaShader*>& getShaders() const {
    164         return mShaders;
    165     }
    166 
    167     const Vector<SkPaint*>& getPaints() const {
    168         return mPaints;
    169     }
    170 
    171     const Vector<SkPath*>& getPaths() const {
    172         return mPaths;
    173     }
    174 
    175     const SortedVector<SkPath*>& getSourcePaths() const {
    176         return mSourcePaths;
    177     }
    178 
    179     const Vector<SkRegion*>& getRegions() const {
    180         return mRegions;
    181     }
    182 
    183     const Vector<Layer*>& getLayers() const {
    184         return mLayers;
    185     }
    186 
    187     const Vector<SkMatrix*>& getMatrices() const {
    188         return mMatrices;
    189     }
    190 
    191     uint32_t getFunctorCount() const {
    192         return mFunctorCount;
    193     }
    194 
    195 private:
    196     void insertRestoreToCount();
    197     void insertTranslate();
    198 
    199     LinearAllocator& alloc() { return mDisplayListData->allocator; }
    200     void addStateOp(StateOp* op);
    201     void addDrawOp(DrawOp* op);
    202     void addOpInternal(DisplayListOp* op) {
    203         insertRestoreToCount();
    204         insertTranslate();
    205         mDisplayListData->displayListOps.add(op);
    206     }
    207 
    208     template<class T>
    209     inline T* refBuffer(const T* srcBuffer, int32_t count) {
    210         if (srcBuffer == NULL) return NULL;
    211         T* dstBuffer = (T*) mDisplayListData->allocator.alloc(count * sizeof(T));
    212         memcpy(dstBuffer, srcBuffer, count * sizeof(T));
    213         return dstBuffer;
    214     }
    215 
    216     inline char* refText(const char* text, size_t byteLength) {
    217         return (char*) refBuffer<uint8_t>((uint8_t*)text, byteLength);
    218     }
    219 
    220     inline SkPath* refPath(SkPath* path) {
    221         if (!path) return NULL;
    222 
    223         SkPath* pathCopy = mPathMap.valueFor(path);
    224         if (pathCopy == NULL || pathCopy->getGenerationID() != path->getGenerationID()) {
    225             pathCopy = new SkPath(*path);
    226             pathCopy->setSourcePath(path);
    227             // replaceValueFor() performs an add if the entry doesn't exist
    228             mPathMap.replaceValueFor(path, pathCopy);
    229             mPaths.add(pathCopy);
    230         }
    231         if (mSourcePaths.indexOf(path) < 0) {
    232             mCaches.resourceCache.incrementRefcount(path);
    233             mSourcePaths.add(path);
    234         }
    235         return pathCopy;
    236     }
    237 
    238     inline SkPaint* refPaint(SkPaint* paint) {
    239         if (!paint) {
    240             return paint;
    241         }
    242 
    243         SkPaint* paintCopy = mPaintMap.valueFor(paint);
    244         if (paintCopy == NULL || paintCopy->getGenerationID() != paint->getGenerationID()) {
    245             paintCopy = new SkPaint(*paint);
    246             // replaceValueFor() performs an add if the entry doesn't exist
    247             mPaintMap.replaceValueFor(paint, paintCopy);
    248             mPaints.add(paintCopy);
    249         }
    250 
    251         return paintCopy;
    252     }
    253 
    254     inline SkRegion* refRegion(SkRegion* region) {
    255         if (!region) {
    256             return region;
    257         }
    258 
    259         SkRegion* regionCopy = mRegionMap.valueFor(region);
    260         // TODO: Add generation ID to SkRegion
    261         if (regionCopy == NULL) {
    262             regionCopy = new SkRegion(*region);
    263             // replaceValueFor() performs an add if the entry doesn't exist
    264             mRegionMap.replaceValueFor(region, regionCopy);
    265             mRegions.add(regionCopy);
    266         }
    267 
    268         return regionCopy;
    269     }
    270 
    271     inline SkMatrix* refMatrix(SkMatrix* matrix) {
    272         if (matrix) {
    273             // Copying the matrix is cheap and prevents against the user changing
    274             // the original matrix before the operation that uses it
    275             SkMatrix* copy = new SkMatrix(*matrix);
    276             mMatrices.add(copy);
    277             return copy;
    278         }
    279         return matrix;
    280     }
    281 
    282     inline Layer* refLayer(Layer* layer) {
    283         mLayers.add(layer);
    284         mCaches.resourceCache.incrementRefcount(layer);
    285         return layer;
    286     }
    287 
    288     inline SkBitmap* refBitmap(SkBitmap* bitmap) {
    289         // Note that this assumes the bitmap is immutable. There are cases this won't handle
    290         // correctly, such as creating the bitmap from scratch, drawing with it, changing its
    291         // contents, and drawing again. The only fix would be to always copy it the first time,
    292         // which doesn't seem worth the extra cycles for this unlikely case.
    293         mBitmapResources.add(bitmap);
    294         mCaches.resourceCache.incrementRefcount(bitmap);
    295         return bitmap;
    296     }
    297 
    298     inline SkBitmap* refBitmapData(SkBitmap* bitmap) {
    299         mOwnedBitmapResources.add(bitmap);
    300         mCaches.resourceCache.incrementRefcount(bitmap);
    301         return bitmap;
    302     }
    303 
    304     inline SkiaShader* refShader(SkiaShader* shader) {
    305         if (!shader) return NULL;
    306 
    307         SkiaShader* shaderCopy = mShaderMap.valueFor(shader);
    308         // TODO: We also need to handle generation ID changes in compose shaders
    309         if (shaderCopy == NULL || shaderCopy->getGenerationId() != shader->getGenerationId()) {
    310             shaderCopy = shader->copy();
    311             // replaceValueFor() performs an add if the entry doesn't exist
    312             mShaderMap.replaceValueFor(shader, shaderCopy);
    313             mShaders.add(shaderCopy);
    314             mCaches.resourceCache.incrementRefcount(shaderCopy);
    315         }
    316         return shaderCopy;
    317     }
    318 
    319     inline SkiaColorFilter* refColorFilter(SkiaColorFilter* colorFilter) {
    320         mFilterResources.add(colorFilter);
    321         mCaches.resourceCache.incrementRefcount(colorFilter);
    322         return colorFilter;
    323     }
    324 
    325     inline Res_png_9patch* refPatch(Res_png_9patch* patch) {
    326         mPatchResources.add(patch);
    327         mCaches.resourceCache.incrementRefcount(patch);
    328         return patch;
    329     }
    330 
    331     Vector<SkBitmap*> mBitmapResources;
    332     Vector<SkBitmap*> mOwnedBitmapResources;
    333     Vector<SkiaColorFilter*> mFilterResources;
    334     Vector<Res_png_9patch*> mPatchResources;
    335 
    336     Vector<SkPaint*> mPaints;
    337     DefaultKeyedVector<SkPaint*, SkPaint*> mPaintMap;
    338 
    339     Vector<SkPath*> mPaths;
    340     DefaultKeyedVector<SkPath*, SkPath*> mPathMap;
    341 
    342     SortedVector<SkPath*> mSourcePaths;
    343 
    344     Vector<SkRegion*> mRegions;
    345     DefaultKeyedVector<SkRegion*, SkRegion*> mRegionMap;
    346 
    347     Vector<SkiaShader*> mShaders;
    348     DefaultKeyedVector<SkiaShader*, SkiaShader*> mShaderMap;
    349 
    350     Vector<SkMatrix*> mMatrices;
    351 
    352     Vector<Layer*> mLayers;
    353 
    354     int mRestoreSaveCount;
    355 
    356     Caches& mCaches;
    357     sp<DisplayListData> mDisplayListData;
    358 
    359     float mTranslateX;
    360     float mTranslateY;
    361     bool mHasTranslate;
    362     bool mHasDrawOps;
    363 
    364     uint32_t mFunctorCount;
    365 
    366     friend class DisplayList;
    367 
    368 }; // class DisplayListRenderer
    369 
    370 }; // namespace uirenderer
    371 }; // namespace android
    372 
    373 #endif // ANDROID_HWUI_DISPLAY_LIST_RENDERER_H
    374