Merge WebKit at r67178 : Initial merge by git.

Change-Id: I57e01163b6866cb029cdadf405a0394a3918bc18

1 files changed, 124 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/gpu/SharedGraphicsContext3D.h b/WebCore/platform/graphics/gpu/SharedGraphicsContext3D.h
new file mode 100644
index 0000000..1baa0f6
--- /dev/null
+++ b/WebCore/platform/graphics/gpu/SharedGraphicsContext3D.h
@@ -0,0 +1,124 @@
+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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.
+ */
+
+#ifndef SharedGraphicsContext3D_h
+#define SharedGraphicsContext3D_h
+
+#include "GraphicsTypes.h"
+#include "ImageSource.h"
+#include "Texture.h"
+
+#include <wtf/HashMap.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/RefCounted.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class AffineTransform;
+class Color;
+class GraphicsContext3D;
+class FloatRect;
+class IntSize;
+class SolidFillShader;
+class TexShader;
+
+typedef HashMap<NativeImagePtr, RefPtr<Texture> > TextureHashMap;
+
+class SharedGraphicsContext3D : public RefCounted<SharedGraphicsContext3D> {
+public:
+    static PassRefPtr<SharedGraphicsContext3D> create(PassOwnPtr<GraphicsContext3D>);
+    ~SharedGraphicsContext3D();
+
+    // Functions that delegate directly to GraphicsContext3D, with caching
+    void makeContextCurrent();
+    void bindFramebuffer(unsigned framebuffer);
+    void setViewport(const IntSize&);
+    void scissor(const FloatRect&);
+    void enable(unsigned capacity);
+    void disable(unsigned capacity);
+    void clearColor(const Color&);
+    void clear(unsigned mask);
+    void drawArrays(unsigned long mode, long first, long count);
+    unsigned long getError();
+    void getIntegerv(unsigned long pname, int* value);
+
+    unsigned createFramebuffer();
+    unsigned createTexture();
+
+    void deleteFramebuffer(unsigned framebuffer);
+    void deleteTexture(unsigned texture);
+
+    void framebufferTexture2D(unsigned long target, unsigned long attachment, unsigned long textarget, unsigned, long level);
+    void texParameteri(unsigned target, unsigned pname, int param);
+    int texImage2D(unsigned target, unsigned level, unsigned internalformat, unsigned width, unsigned height, unsigned border, unsigned format, unsigned type, void* pixels);
+    int texSubImage2D(unsigned target, unsigned level, unsigned xoffset, unsigned yoffset, unsigned width, unsigned height, unsigned format, unsigned type, void* pixels);
+
+    void readPixels(long x, long y, unsigned long width, unsigned long height, unsigned long format, unsigned long type, void* data);
+
+    bool paintsIntoCanvasBuffer() const;
+
+    // Shared logic for canvas 2d
+    void applyCompositeOperator(CompositeOperator);
+    void useQuadVertices();
+
+    void useFillSolidProgram(const AffineTransform&, const Color&);
+    void useTextureProgram(const AffineTransform&, const AffineTransform&, float alpha);
+
+    void setActiveTexture(unsigned textureUnit);
+    void bindTexture(unsigned target, unsigned texture);
+
+    bool supportsBGRA();
+
+    // Creates a texture associated with the given image.  Is owned by this context's
+    // TextureHashMap.
+    Texture* createTexture(NativeImagePtr, Texture::Format, int width, int height);
+    Texture* getTexture(NativeImagePtr);
+
+    // Creates a texture that is not associated with any image.  The caller takes ownership of
+    // the texture.
+    PassRefPtr<Texture> createTexture(Texture::Format, int width, int height);
+
+private:
+    SharedGraphicsContext3D(PassOwnPtr<GraphicsContext3D> context);
+
+    OwnPtr<GraphicsContext3D> m_context;
+
+    unsigned m_quadVertices;
+
+    OwnPtr<SolidFillShader> m_solidFillShader;
+    OwnPtr<TexShader> m_texShader;
+
+    TextureHashMap m_textures;
+};
+
+} // namespace WebCore
+
+#endif // SharedGraphicsContext3D_h