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

ui/cc/GeometryBinding.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 "GeometryBinding.h"
+
+#include "GraphicsContext3D.h"
+#include "LayerRendererChromium.h"
+#include <public/WebGraphicsContext3D.h>
+
+namespace WebCore {
+
+GeometryBinding::GeometryBinding(WebKit::WebGraphicsContext3D* context)
+    : m_context(context)
+    , m_quadVerticesVbo(0)
+    , m_quadElementsVbo(0)
+    , m_initialized(false)
+{
+    // Vertex positions and texture coordinates for the 4 corners of a 1x1 quad.
+    float vertices[] = { -0.5f,  0.5f, 0.0f, 0.0f,  1.0f,
+                         -0.5f, -0.5f, 0.0f, 0.0f,  0.0f,
+                         0.5f, -0.5f, 0.0f, 1.0f,  0.0f,
+                         0.5f,  0.5f, 0.0f, 1.0f,  1.0f };
+    uint16_t indices[] = { 0, 1, 2, 0, 2, 3, // The two triangles that make up the layer quad.
+                           0, 1, 2, 3}; // A line path for drawing the layer border.
+
+    GLC(m_context, m_quadVerticesVbo = m_context->createBuffer());
+    GLC(m_context, m_quadElementsVbo = m_context->createBuffer());
+    GLC(m_context, m_context->bindBuffer(GL_ARRAY_BUFFER, m_quadVerticesVbo));
+    GLC(m_context, m_context->bufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW));
+    GLC(m_context, m_context->bindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_quadElementsVbo));
+    GLC(m_context, m_context->bufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW));
+
+    m_initialized = true;
+}
+
+GeometryBinding::~GeometryBinding()
+{
+    GLC(m_context, m_context->deleteBuffer(m_quadVerticesVbo));
+    GLC(m_context, m_context->deleteBuffer(m_quadElementsVbo));
+}
+
+void GeometryBinding::prepareForDraw()
+{
+    GLC(m_context, m_context->bindBuffer(GL_ARRAY_BUFFER, quadVerticesVbo()));
+    GLC(m_context, m_context->bindBuffer(GL_ELEMENT_ARRAY_BUFFER, quadElementsVbo()));
+    unsigned offset = 0;
+    GLC(m_context, m_context->vertexAttribPointer(positionAttribLocation(), 3, GL_FLOAT, false, 5 * sizeof(float), offset));
+    offset += 3 * sizeof(float);
+    GLC(m_context, m_context->vertexAttribPointer(texCoordAttribLocation(), 2, GL_FLOAT, false, 5 * sizeof(float), offset));
+    GLC(m_context, m_context->enableVertexAttribArray(positionAttribLocation()));
+    GLC(m_context, m_context->enableVertexAttribArray(texCoordAttribLocation()));
+}
+
+} // namespace WebCore
+
+#endif // USE(ACCELERATED_COMPOSITING)