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      1 /*
      2  * Copyright 2011, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #define LOG_TAG "GaneshRenderer"
     27 #define LOG_NDEBUG 1
     28 
     29 #include "config.h"
     30 #include "GaneshRenderer.h"
     31 
     32 #if USE(ACCELERATED_COMPOSITING)
     33 
     34 #include "AndroidLog.h"
     35 #include "GaneshContext.h"
     36 #include "SkCanvas.h"
     37 #include "SkGpuDevice.h"
     38 #include "TilesManager.h"
     39 #include "TransferQueue.h"
     40 
     41 namespace WebCore {
     42 
     43 GaneshRenderer::GaneshRenderer() : BaseRenderer(BaseRenderer::Ganesh)
     44 {
     45 #ifdef DEBUG_COUNT
     46     ClassTracker::instance()->increment("GaneshRenderer");
     47 #endif
     48 }
     49 
     50 GaneshRenderer::~GaneshRenderer()
     51 {
     52 #ifdef DEBUG_COUNT
     53     ClassTracker::instance()->decrement("GaneshRenderer");
     54 #endif
     55 }
     56 
     57 void GaneshRenderer::setupCanvas(const TileRenderInfo& renderInfo, SkCanvas* canvas)
     58 {
     59     GaneshContext* ganesh = GaneshContext::instance();
     60 
     61     TransferQueue* tileQueue = TilesManager::instance()->transferQueue();
     62 
     63     tileQueue->lockQueue();
     64 
     65     bool ready = tileQueue->readyForUpdate();
     66     if (!ready) {
     67         ALOGV("!ready");
     68         tileQueue->unlockQueue();
     69         return;
     70     }
     71 
     72     SkDevice* device = NULL;
     73     if (renderInfo.tileSize.width() == TilesManager::tileWidth()
     74             && renderInfo.tileSize.height() == TilesManager::tileHeight()) {
     75         device = ganesh->getDeviceForTile(renderInfo);
     76     } else {
     77         // TODO support arbitrary sizes for layers
     78         ALOGV("ERROR: expected (%d,%d) actual (%d,%d)",
     79               TilesManager::tileWidth(), TilesManager::tileHeight(),
     80               renderInfo.tileSize.width(), renderInfo.tileSize.height());
     81     }
     82 
     83     // set the GPU device to the canvas
     84     canvas->setDevice(device);
     85 }
     86 
     87 void GaneshRenderer::renderingComplete(const TileRenderInfo& renderInfo, SkCanvas* canvas)
     88 {
     89     ALOGV("rendered to tile (%d,%d)", renderInfo.x, renderInfo.y);
     90 
     91     GaneshContext::instance()->flush();
     92 
     93     // In SurfaceTextureMode we must call swapBuffers to unlock and post the
     94     // tile's ANativeWindow (i.e. Surface) buffer
     95     TransferQueue* tileQueue = TilesManager::instance()->transferQueue();
     96     eglSwapBuffers(eglGetCurrentDisplay(), tileQueue->m_eglSurface);
     97     SkBitmap dummyBitmap;
     98     tileQueue->addItemInTransferQueue(&renderInfo, GpuUpload, dummyBitmap);
     99     tileQueue->unlockQueue();
    100 }
    101 
    102 } // namespace WebCore
    103 
    104 #endif // USE(ACCELERATED_COMPOSITING)
    105