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

ui/cc/cc/CCIOSurfaceLayerImpl.cpp

Index: ui/cc/cc/CCIOSurfaceLayerImpl.cpp
diff --git a/ui/cc/cc/CCIOSurfaceLayerImpl.cpp b/ui/cc/cc/CCIOSurfaceLayerImpl.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..826852dec11c2f3e3d246a24ab2d4ef5a8c632e1
--- /dev/null
+++ b/ui/cc/cc/CCIOSurfaceLayerImpl.cpp
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2012 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 "cc/CCIOSurfaceLayerImpl.h"
+
+#include "Extensions3D.h"
+#include "LayerRendererChromium.h"
+#include "TextStream.h"
+#include "cc/CCGraphicsContext.h"
+#include "cc/CCIOSurfaceDrawQuad.h"
+#include "cc/CCLayerTreeHostImpl.h"
+#include "cc/CCQuadCuller.h"
+#include <public/WebGraphicsContext3D.h>
+
+namespace WebCore {
+
+CCIOSurfaceLayerImpl::CCIOSurfaceLayerImpl(int id)
+    : CCLayerImpl(id)
+    , m_ioSurfaceId(0)
+    , m_ioSurfaceChanged(false)
+    , m_ioSurfaceTextureId(0)
+{
+}
+
+CCIOSurfaceLayerImpl::~CCIOSurfaceLayerImpl()
+{
+    if (!m_ioSurfaceTextureId)
+        return;
+
+    CCGraphicsContext* context = layerTreeHostImpl()->context();
+    // FIXME: Implement this path for software compositing.
+    WebKit::WebGraphicsContext3D* context3d = context->context3D();
+    if (context3d)
+        context3d->deleteTexture(m_ioSurfaceTextureId);
+}
+
+void CCIOSurfaceLayerImpl::willDraw(CCRenderer* layerRenderer, CCGraphicsContext* context)
+{
+    CCLayerImpl::willDraw(layerRenderer, context);
+
+    if (m_ioSurfaceChanged) {
+        WebKit::WebGraphicsContext3D* context3d = context->context3D();
+        if (!context3d) {
+            // FIXME: Implement this path for software compositing.
+            return;
+        }
+
+        // FIXME: Do this in a way that we can track memory usage.
+        if (!m_ioSurfaceTextureId)
+            m_ioSurfaceTextureId = context3d->createTexture();
+
+        GLC(context3d, context3d->activeTexture(GL_TEXTURE0));
+        GLC(context3d, context3d->bindTexture(GL_TEXTURE_RECTANGLE_ARB, m_ioSurfaceTextureId));
+        GLC(context3d, context3d->texParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
+        GLC(context3d, context3d->texParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
+        GLC(context3d, context3d->texParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
+        GLC(context3d, context3d->texParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+        context3d->texImageIOSurface2DCHROMIUM(GL_TEXTURE_RECTANGLE_ARB,
+                                               m_ioSurfaceSize.width(),
+                                               m_ioSurfaceSize.height(),
+                                               m_ioSurfaceId,
+                                               0);
+        // Do not check for error conditions. texImageIOSurface2DCHROMIUM is supposed to hold on to
+        // the last good IOSurface if the new one is already closed. This is only a possibility
+        // during live resizing of plugins. However, it seems that this is not sufficient to
+        // completely guard against garbage being drawn. If this is found to be a significant issue,
+        // it may be necessary to explicitly tell the embedder when to free the surfaces it has
+        // allocated.
+        m_ioSurfaceChanged = false;
+    }
+}
+
+void CCIOSurfaceLayerImpl::appendQuads(CCQuadCuller& quadList, const CCSharedQuadState* sharedQuadState, bool&)
+{
+    IntRect quadRect(IntPoint(), bounds());
+    quadList.append(CCIOSurfaceDrawQuad::create(sharedQuadState, quadRect, m_ioSurfaceSize, m_ioSurfaceTextureId));
+}
+
+void CCIOSurfaceLayerImpl::dumpLayerProperties(TextStream& ts, int indent) const
+{
+    writeIndent(ts, indent);
+    ts << "iosurface id: " << m_ioSurfaceId << " texture id: " << m_ioSurfaceTextureId;
+    CCLayerImpl::dumpLayerProperties(ts, indent);
+}
+
+void CCIOSurfaceLayerImpl::didLoseContext()
+{
+    // We don't have a valid texture ID in the new context; however,
+    // the IOSurface is still valid.
+    m_ioSurfaceTextureId = 0;
+    m_ioSurfaceChanged = true;
+}
+
+void CCIOSurfaceLayerImpl::setIOSurfaceProperties(unsigned ioSurfaceId, const IntSize& size)
+{
+    if (m_ioSurfaceId != ioSurfaceId)
+        m_ioSurfaceChanged = true;
+
+    m_ioSurfaceId = ioSurfaceId;
+    m_ioSurfaceSize = size;
+}
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)