1 files changed, 128 insertions, 0 deletions
diff --git a/Source/WebCore/html/canvas/WebGLTexture.h b/Source/WebCore/html/canvas/WebGLTexture.h
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+++ b/Source/WebCore/html/canvas/WebGLTexture.h
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+/*
+ * Copyright (C) 2009 Apple 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 WebGLTexture_h
+#define WebGLTexture_h
+
+#include "WebGLObject.h"
+
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class WebGLTexture : public WebGLObject {
+public:
+    virtual ~WebGLTexture() { deleteObject(); }
+
+    static PassRefPtr<WebGLTexture> create(WebGLRenderingContext*);
+
+    void setTarget(unsigned long target, int maxLevel);
+    void setParameteri(unsigned long pname, int param);
+    void setParameterf(unsigned long pname, float param);
+
+    int getMinFilter() const { return m_minFilter; }
+
+    void setLevelInfo(unsigned long target, int level, unsigned long internalFormat, int width, int height, unsigned long type);
+
+    bool canGenerateMipmaps();
+    // Generate all level information.
+    void generateMipmapLevelInfo();
+
+    unsigned long getInternalFormat(unsigned long target, int level) const;
+    unsigned long getType(unsigned long target, int level) const;
+    int getWidth(unsigned long target, int level) const;
+    int getHeight(unsigned long target, int level) const;
+
+    // Whether width/height is NotPowerOfTwo.
+    static bool isNPOT(unsigned, unsigned);
+
+    bool isNPOT() const;
+    // Determine if texture sampling should always return [0, 0, 0, 1] (OpenGL ES 2.0 Sec 3.8.2).
+    bool needToUseBlackTexture() const;
+
+    bool hasEverBeenBound() const { return object() && m_target; }
+
+    static int computeLevelCount(int width, int height);
+
+protected:
+    WebGLTexture(WebGLRenderingContext*);
+
+    virtual void deleteObjectImpl(Platform3DObject);
+
+private:
+    class LevelInfo {
+    public:
+        LevelInfo()
+            : valid(false)
+            , internalFormat(0)
+            , width(0)
+            , height(0)
+            , type(0)
+        {
+        }
+
+        void setInfo(unsigned long internalFmt, int w, int h, unsigned long tp)
+        {
+            valid = true;
+            internalFormat = internalFmt;
+            width = w;
+            height = h;
+            type = tp;
+        }
+
+        bool valid;
+        unsigned long internalFormat;
+        int width;
+        int height;
+        unsigned long type;
+    };
+
+    virtual bool isTexture() const { return true; }
+
+    void update();
+
+    int mapTargetToIndex(unsigned long) const;
+
+    const LevelInfo* getLevelInfo(unsigned long target, int level) const;
+
+    unsigned long m_target;
+
+    int m_minFilter;
+    int m_magFilter;
+    int m_wrapS;
+    int m_wrapT;
+
+    Vector<Vector<LevelInfo> > m_info;
+
+    bool m_isNPOT;
+    bool m_isComplete;
+    bool m_needToUseBlackTexture;
+};
+
+} // namespace WebCore
+
+#endif // WebGLTexture_h