Initial import attempt, just to play with. Many things disabled/removed

ui/cc/BitmapCanvasLayerTextureUpdater.cpp

+/*
+ * Copyright (C) 2011 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include "config.h"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "BitmapCanvasLayerTextureUpdater.h"
+
+#include "LayerPainterChromium.h"
+#include "PlatformColor.h"
+#include "skia/ext/platform_canvas.h"
+
+namespace WebCore {
+
+BitmapCanvasLayerTextureUpdater::Texture::Texture(BitmapCanvasLayerTextureUpdater* textureUpdater, PassOwnPtr<ManagedTexture> texture)
+    : LayerTextureUpdater::Texture(texture)
+    , m_textureUpdater(textureUpdater)
+{
+}
+
+BitmapCanvasLayerTextureUpdater::Texture::~Texture()
+{
+}
+
+void BitmapCanvasLayerTextureUpdater::Texture::updateRect(CCGraphicsContext* context, TextureAllocator* allocator, const IntRect& sourceRect, const IntRect& destRect)
+{
+    textureUpdater()->updateTextureRect(context, allocator, texture(), sourceRect, destRect);
+}
+
+PassRefPtr<BitmapCanvasLayerTextureUpdater> BitmapCanvasLayerTextureUpdater::create(PassOwnPtr<LayerPainterChromium> painter, bool useMapTexSubImage)
+{
+    return adoptRef(new BitmapCanvasLayerTextureUpdater(painter, useMapTexSubImage));
+}
+
+BitmapCanvasLayerTextureUpdater::BitmapCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium> painter, bool useMapTexSubImage)
+    : CanvasLayerTextureUpdater(painter)
+    , m_opaque(false)
+    , m_texSubImage(useMapTexSubImage)
+{
+}
+
+BitmapCanvasLayerTextureUpdater::~BitmapCanvasLayerTextureUpdater()
+{
+}
+
+PassOwnPtr<LayerTextureUpdater::Texture> BitmapCanvasLayerTextureUpdater::createTexture(TextureManager* manager)
+{
+    return adoptPtr(new Texture(this, ManagedTexture::create(manager)));
+}
+
+LayerTextureUpdater::SampledTexelFormat BitmapCanvasLayerTextureUpdater::sampledTexelFormat(GC3Denum textureFormat)
+{
+    // The component order may be bgra if we uploaded bgra pixels to rgba textures.
+    return PlatformColor::sameComponentOrder(textureFormat) ?
+            LayerTextureUpdater::SampledTexelFormatRGBA : LayerTextureUpdater::SampledTexelFormatBGRA;
+}
+
+void BitmapCanvasLayerTextureUpdater::prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, float contentsScale, IntRect& resultingOpaqueRect)
+{
+    m_texSubImage.setSubImageSize(tileSize);
+
+    if (m_canvasSize != contentRect.size()) {
+        m_canvasSize = contentRect.size();
+        m_canvas = adoptPtr(skia::CreateBitmapCanvas(m_canvasSize.width(), m_canvasSize.height(), m_opaque));
+    }
+
+    paintContents(m_canvas.get(), contentRect, contentsScale, resultingOpaqueRect);
+}
+
+void BitmapCanvasLayerTextureUpdater::updateTextureRect(CCGraphicsContext* context, TextureAllocator* allocator, ManagedTexture* texture, const IntRect& sourceRect, const IntRect& destRect)
+{
+    const SkBitmap& bitmap = m_canvas->getDevice()->accessBitmap(false);
+    bitmap.lockPixels();
+
+    texture->bindTexture(context, allocator);
+    m_texSubImage.upload(static_cast<const uint8_t*>(bitmap.getPixels()), contentRect(), sourceRect, destRect, texture->format(), context);
+    bitmap.unlockPixels();
+}
+
+void BitmapCanvasLayerTextureUpdater::setOpaque(bool opaque)
+{
+    if (opaque != m_opaque) {
+        m_canvas.clear();
+        m_canvasSize = IntSize();
+    }
+    m_opaque = opaque;
+}
+
+} // namespace WebCore
+#endif // USE(ACCELERATED_COMPOSITING)