cc/BitmapSkPictureCanvasLayerTextureUpdater.cpp

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5
   6 #include "config.h"
   7
   8 #if USE(ACCELERATED_COMPOSITING)
   9
  10 #include "BitmapSkPictureCanvasLayerTextureUpdater.h"
  11
  12 #include "CCRenderingStats.h"
  13 #include "LayerPainterChromium.h"
  14 #include "PlatformColor.h"
  15 #include "SkCanvas.h"
  16 #include "SkDevice.h"
  17 #include <wtf/CurrentTime.h>
  18
  19 namespace WebCore {
  20
  21 BitmapSkPictureCanvasLayerTextureUpdater::Texture::Texture(BitmapSkPictureCanvasLayerTextureUpdater* textureUpdater, PassOwnPtr<CCPrioritizedTexture> texture)
  22     : CanvasLayerTextureUpdater::Texture(texture)
  23     , m_textureUpdater(textureUpdater)
  24 {
  25 }
  26
  27 void BitmapSkPictureCanvasLayerTextureUpdater::Texture::prepareRect(const IntRect& sourceRect, CCRenderingStats& stats)
  28 {
  29     m_bitmap.setConfig(SkBitmap::kARGB_8888_Config, sourceRect.width(), sourceRect.height());
  30     m_bitmap.allocPixels();
  31     m_bitmap.setIsOpaque(m_textureUpdater->layerIsOpaque());
  32     SkDevice device(m_bitmap);
  33     SkCanvas canvas(&device);
  34     double paintBeginTime = monotonicallyIncreasingTime();
  35     textureUpdater()->paintContentsRect(&canvas, sourceRect, stats);
  36     stats.totalPaintTimeInSeconds += monotonicallyIncreasingTime() - paintBeginTime;
  37 }
  38
  39 void BitmapSkPictureCanvasLayerTextureUpdater::Texture::updateRect(CCResourceProvider* resourceProvider, const IntRect& sourceRect, const IntSize& destOffset)
  40 {
  41     m_bitmap.lockPixels();
  42     texture()->upload(resourceProvider, static_cast<uint8_t*>(m_bitmap.getPixels()), sourceRect, sourceRect, destOffset);
  43     m_bitmap.unlockPixels();
  44     m_bitmap.reset();
  45 }
  46
  47 PassRefPtr<BitmapSkPictureCanvasLayerTextureUpdater> BitmapSkPictureCanvasLayerTextureUpdater::create(PassOwnPtr<LayerPainterChromium> painter)
  48 {
  49     return adoptRef(new BitmapSkPictureCanvasLayerTextureUpdater(painter));
  50 }
  51
  52 BitmapSkPictureCanvasLayerTextureUpdater::BitmapSkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium> painter)
  53     : SkPictureCanvasLayerTextureUpdater(painter)
  54 {
  55 }
  56
  57 BitmapSkPictureCanvasLayerTextureUpdater::~BitmapSkPictureCanvasLayerTextureUpdater()
  58 {
  59 }
  60
  61 PassOwnPtr<LayerTextureUpdater::Texture> BitmapSkPictureCanvasLayerTextureUpdater::createTexture(CCPrioritizedTextureManager* manager)
  62 {
  63     return adoptPtr(new Texture(this, CCPrioritizedTexture::create(manager)));
  64 }
  65
  66 LayerTextureUpdater::SampledTexelFormat BitmapSkPictureCanvasLayerTextureUpdater::sampledTexelFormat(GC3Denum textureFormat)
  67 {
  68     // The component order may be bgra if we uploaded bgra pixels to rgba textures.
  69     return PlatformColor::sameComponentOrder(textureFormat) ?
  70             LayerTextureUpdater::SampledTexelFormatRGBA : LayerTextureUpdater::SampledTexelFormatBGRA;
  71 }
  72
  73 void BitmapSkPictureCanvasLayerTextureUpdater::paintContentsRect(SkCanvas* canvas, const IntRect& sourceRect, CCRenderingStats& stats)
  74 {
  75     // Translate the origin of contentRect to that of sourceRect.
  76     canvas->translate(contentRect().x() - sourceRect.x(),
  77                       contentRect().y() - sourceRect.y());
  78     double rasterizeBeginTime = monotonicallyIncreasingTime();
  79     drawPicture(canvas);
  80     stats.totalRasterizeTimeInSeconds += monotonicallyIncreasingTime() - rasterizeBeginTime;
  81 }
  82
  83 } // namespace WebCore
  84 #endif // USE(ACCELERATED_COMPOSITING)