1 files changed, 93 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/chromium/LayerTexture.cpp b/WebCore/platform/graphics/chromium/LayerTexture.cpp
new file mode 100644
index 0000000..32bfa0b
--- /dev/null
+++ b/WebCore/platform/graphics/chromium/LayerTexture.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2010, 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 INC. 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 INC. 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 "LayerTexture.h"
+
+#include "GraphicsContext3D.h"
+#include "TextureManager.h"
+
+namespace WebCore {
+
+LayerTexture::LayerTexture(GraphicsContext3D* context, TextureManager* manager)
+    : m_context(context)
+    , m_textureManager(manager)
+    , m_token(0)
+    , m_format(0)
+    , m_textureId(0)
+{
+}
+
+LayerTexture::~LayerTexture()
+{
+    if (m_token)
+        m_textureManager->releaseToken(m_token);
+}
+
+bool LayerTexture::isValid(const IntSize& size, unsigned format)
+{
+    return m_token && size == m_size && format == m_format && m_textureManager->hasTexture(m_token);
+}
+
+bool LayerTexture::reserve(const IntSize& size, unsigned format)
+{
+    if (!m_token)
+        m_token = m_textureManager->getToken();
+
+    if (size == m_size && format == m_format && m_textureManager->hasTexture(m_token))
+        m_textureManager->protectTexture(m_token);
+    else {
+        m_textureId = m_textureManager->requestTexture(m_token, size, format);
+        if (m_textureId) {
+            m_size = size;
+            m_format = format;
+        }
+    }
+
+    return m_textureId;
+}
+
+void LayerTexture::unreserve()
+{
+    if (m_token)
+        m_textureManager->unprotectTexture(m_token);
+}
+
+void LayerTexture::bindTexture()
+{
+    m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
+}
+
+void LayerTexture::framebufferTexture2D()
+{
+    m_context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_textureId, 0);
+}
+
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)
+