cc/TextureLayerChromium.cpp

   1 // Copyright 2010 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 #include "config.h"
   6
   7 #if USE(ACCELERATED_COMPOSITING)
   8
   9 #include "TextureLayerChromium.h"
  10
  11 #include "CCLayerTreeHost.h"
  12 #include "CCTextureLayerImpl.h"
  13 #include "GraphicsContext3D.h"
  14 #include "TextureLayerChromiumClient.h"
  15 #include <public/WebGraphicsContext3D.h>
  16
  17 namespace cc {
  18
  19 scoped_refptr<TextureLayerChromium> TextureLayerChromium::create(TextureLayerChromiumClient* client)
  20 {
  21     return scoped_refptr<TextureLayerChromium>(new TextureLayerChromium(client));
  22 }
  23
  24 TextureLayerChromium::TextureLayerChromium(TextureLayerChromiumClient* client)
  25     : LayerChromium()
  26     , m_client(client)
  27     , m_flipped(true)
  28     , m_uvRect(0, 0, 1, 1)
  29     , m_premultipliedAlpha(true)
  30     , m_rateLimitContext(false)
  31     , m_contextLost(false)
  32     , m_textureId(0)
  33 {
  34 }
  35
  36 TextureLayerChromium::~TextureLayerChromium()
  37 {
  38     if (layerTreeHost()) {
  39         if (m_textureId)
  40             layerTreeHost()->acquireLayerTextures();
  41         if (m_rateLimitContext && m_client)
  42             layerTreeHost()->stopRateLimiter(m_client->context());
  43     }
  44 }
  45
  46 PassOwnPtr<CCLayerImpl> TextureLayerChromium::createCCLayerImpl()
  47 {
  48     return CCTextureLayerImpl::create(m_layerId);
  49 }
  50
  51 void TextureLayerChromium::setFlipped(bool flipped)
  52 {
  53     m_flipped = flipped;
  54     setNeedsCommit();
  55 }
  56
  57 void TextureLayerChromium::setUVRect(const FloatRect& rect)
  58 {
  59     m_uvRect = rect;
  60     setNeedsCommit();
  61 }
  62
  63 void TextureLayerChromium::setPremultipliedAlpha(bool premultipliedAlpha)
  64 {
  65     m_premultipliedAlpha = premultipliedAlpha;
  66     setNeedsCommit();
  67 }
  68
  69 void TextureLayerChromium::setRateLimitContext(bool rateLimit)
  70 {
  71     if (!rateLimit && m_rateLimitContext && m_client && layerTreeHost())
  72         layerTreeHost()->stopRateLimiter(m_client->context());
  73
  74     m_rateLimitContext = rateLimit;
  75 }
  76
  77 void TextureLayerChromium::setTextureId(unsigned id)
  78 {
  79     if (m_textureId == id)
  80         return;
  81     if (m_textureId && layerTreeHost())
  82         layerTreeHost()->acquireLayerTextures();
  83     m_textureId = id;
  84     setNeedsCommit();
  85 }
  86
  87 void TextureLayerChromium::willModifyTexture()
  88 {
  89     if (layerTreeHost())
  90         layerTreeHost()->acquireLayerTextures();
  91 }
  92
  93 void TextureLayerChromium::setNeedsDisplayRect(const FloatRect& dirtyRect)
  94 {
  95     LayerChromium::setNeedsDisplayRect(dirtyRect);
  96
  97     if (m_rateLimitContext && m_client && layerTreeHost())
  98         layerTreeHost()->startRateLimiter(m_client->context());
  99 }
 100
 101 void TextureLayerChromium::setLayerTreeHost(CCLayerTreeHost* host)
 102 {
 103     if (m_textureId && layerTreeHost() && host != layerTreeHost())
 104         layerTreeHost()->acquireLayerTextures();
 105     LayerChromium::setLayerTreeHost(host);
 106 }
 107
 108 bool TextureLayerChromium::drawsContent() const
 109 {
 110     return (m_client || m_textureId) && !m_contextLost && LayerChromium::drawsContent();
 111 }
 112
 113 void TextureLayerChromium::update(CCTextureUpdateQueue& queue, const CCOcclusionTracker*, CCRenderingStats&)
 114 {
 115     if (m_client) {
 116         m_textureId = m_client->prepareTexture(queue);
 117         m_contextLost = m_client->context()->getGraphicsResetStatusARB() != GraphicsContext3D::NO_ERROR;
 118     }
 119
 120     m_needsDisplay = false;
 121 }
 122
 123 void TextureLayerChromium::pushPropertiesTo(CCLayerImpl* layer)
 124 {
 125     LayerChromium::pushPropertiesTo(layer);
 126
 127     CCTextureLayerImpl* textureLayer = static_cast<CCTextureLayerImpl*>(layer);
 128     textureLayer->setFlipped(m_flipped);
 129     textureLayer->setUVRect(m_uvRect);
 130     textureLayer->setPremultipliedAlpha(m_premultipliedAlpha);
 131     textureLayer->setTextureId(m_textureId);
 132 }
 133
 134 }
 135 #endif // USE(ACCELERATED_COMPOSITING)