1 files changed, 36 insertions, 0 deletions
diff --git a/cc/CCTexture.cpp b/cc/CCTexture.cpp
new file mode 100644
index 0000000..bcd1ea3
--- /dev/null
+++ b/cc/CCTexture.cpp
@@ -0,0 +1,36 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+
+#include "CCTexture.h"
+
+namespace WebCore {
+
+void CCTexture::setDimensions(const IntSize& size, GC3Denum format)
+{
+    m_size = size;
+    m_format = format;
+}
+
+size_t CCTexture::bytes() const
+{
+    if (m_size.isEmpty())
+        return 0u;
+
+    return memorySizeBytes(m_size, m_format);
+}
+
+size_t CCTexture::memorySizeBytes(const IntSize& size, GC3Denum format)
+{
+    unsigned int componentsPerPixel;
+    unsigned int bytesPerComponent;
+    if (!GraphicsContext3D::computeFormatAndTypeParameters(format, GraphicsContext3D::UNSIGNED_BYTE, &componentsPerPixel, &bytesPerComponent)) {
+        ASSERT_NOT_REACHED();
+        return 0u;
+    }
+    return componentsPerPixel * bytesPerComponent * size.width() * size.height();
+}
+
+}