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/*
* 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.
*/
#ifndef WebGLCompressedTextures_h
#define WebGLCompressedTextures_h
#include "ExceptionCode.h"
#include "WebGLExtension.h"
#include <wtf/ArrayBufferView.h>
#include <wtf/PassOwnPtr.h>
namespace WebCore {
class WebGLTexture;
class WebGLCompressedTextures : public WebGLExtension {
public:
static PassOwnPtr<WebGLCompressedTextures> create(WebGLRenderingContext*);
static bool supported(WebGLRenderingContext*);
virtual ~WebGLCompressedTextures();
virtual ExtensionName getName() const;
void compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width,
GC3Dsizei height, GC3Dint border, ArrayBufferView* data);
void compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
GC3Dsizei width, GC3Dsizei height, GC3Denum format, ArrayBufferView* data);
WebGLGetInfo getCompressedTextureFormats();
private:
WebGLCompressedTextures(WebGLRenderingContext*);
bool validateCompressedTexFuncData(const char* functionName,
GC3Dsizei width, GC3Dsizei height,
GC3Denum format, ArrayBufferView* pixels);
bool validateCompressedTexFormat(GC3Denum format);
bool validateCompressedTexSubDimensions(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
GC3Dsizei width, GC3Dsizei height, GC3Denum format, WebGLTexture*);
bool m_supportsDxt1;
bool m_supportsDxt5;
bool m_supportsEtc1;
bool m_supportsPvrtc;
Vector<int> m_formats;
};
} // namespace WebCore
#endif // WebGLCompressedTextures_h
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