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

ui/cc/BitmapSkPictureCanvasLayerTextureUpdater.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 "BitmapSkPictureCanvasLayerTextureUpdater.h"
+
+#include "LayerPainterChromium.h"
+#include "PlatformColor.h"
+#include "SkCanvas.h"
+#include "SkDevice.h"
+
+namespace WebCore {
+
+BitmapSkPictureCanvasLayerTextureUpdater::Texture::Texture(BitmapSkPictureCanvasLayerTextureUpdater* textureUpdater, PassOwnPtr<ManagedTexture> texture)
+    : CanvasLayerTextureUpdater::Texture(texture)
+    , m_textureUpdater(textureUpdater)
+{
+}
+
+void BitmapSkPictureCanvasLayerTextureUpdater::Texture::prepareRect(const IntRect& sourceRect)
+{
+    m_bitmap.setConfig(SkBitmap::kARGB_8888_Config, sourceRect.width(), sourceRect.height());
+    m_bitmap.allocPixels();
+    m_bitmap.setIsOpaque(m_textureUpdater->layerIsOpaque());
+    SkDevice device(m_bitmap);
+    SkCanvas canvas(&device);
+    textureUpdater()->paintContentsRect(&canvas, sourceRect);
+}
+
+void BitmapSkPictureCanvasLayerTextureUpdater::Texture::updateRect(CCGraphicsContext* context, TextureAllocator* allocator, const IntRect& sourceRect, const IntRect& destRect)
+{
+    texture()->bindTexture(context, allocator);
+
+    m_bitmap.lockPixels();
+    textureUpdater()->updateTextureRect(context, texture()->format(), destRect, static_cast<uint8_t*>(m_bitmap.getPixels()));
+    m_bitmap.unlockPixels();
+    m_bitmap.reset();
+}
+
+PassRefPtr<BitmapSkPictureCanvasLayerTextureUpdater> BitmapSkPictureCanvasLayerTextureUpdater::create(PassOwnPtr<LayerPainterChromium> painter, bool useMapTexSubImage)
+{
+    return adoptRef(new BitmapSkPictureCanvasLayerTextureUpdater(painter, useMapTexSubImage));
+}
+
+BitmapSkPictureCanvasLayerTextureUpdater::BitmapSkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium> painter, bool useMapTexSubImage)
+    : SkPictureCanvasLayerTextureUpdater(painter)
+    , m_texSubImage(useMapTexSubImage)
+{
+}
+
+BitmapSkPictureCanvasLayerTextureUpdater::~BitmapSkPictureCanvasLayerTextureUpdater()
+{
+}
+
+PassOwnPtr<LayerTextureUpdater::Texture> BitmapSkPictureCanvasLayerTextureUpdater::createTexture(TextureManager* manager)
+{
+    return adoptPtr(new Texture(this, ManagedTexture::create(manager)));
+}
+
+LayerTextureUpdater::SampledTexelFormat BitmapSkPictureCanvasLayerTextureUpdater::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 BitmapSkPictureCanvasLayerTextureUpdater::prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, float contentsScale, IntRect& resultingOpaqueRect)
+{
+    m_texSubImage.setSubImageSize(tileSize);
+    SkPictureCanvasLayerTextureUpdater::prepareToUpdate(contentRect, tileSize, contentsScale, resultingOpaqueRect);
+}
+
+void BitmapSkPictureCanvasLayerTextureUpdater::paintContentsRect(SkCanvas* canvas, const IntRect& sourceRect)
+{
+    // Translate the origin of contentRect to that of sourceRect.
+    canvas->translate(contentRect().x() - sourceRect.x(),
+                      contentRect().y() - sourceRect.y());
+    drawPicture(canvas);
+}
+
+void BitmapSkPictureCanvasLayerTextureUpdater::updateTextureRect(CCGraphicsContext* context, GC3Denum format, const IntRect& destRect, const uint8_t* pixels)
+{
+    m_texSubImage.upload(pixels, destRect, destRect, destRect, format, context);
+}
+
+} // namespace WebCore
+#endif // USE(ACCELERATED_COMPOSITING)