diff options
Diffstat (limited to 'src/3rdparty/webkit/WebCore/html/canvas/WebGLUnsignedShortArray.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/html/canvas/WebGLUnsignedShortArray.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/html/canvas/WebGLUnsignedShortArray.h b/src/3rdparty/webkit/WebCore/html/canvas/WebGLUnsignedShortArray.h new file mode 100644 index 0000000000..94b428a955 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/html/canvas/WebGLUnsignedShortArray.h @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * Copyright (C) 2009 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 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 WebGLUnsignedShortArray_h +#define WebGLUnsignedShortArray_h + +#include "WebGLArray.h" +#include <limits> +#include <wtf/MathExtras.h> +#include <wtf/PassRefPtr.h> +#include <wtf/RefCounted.h> + +namespace WebCore { + +class WebGLUnsignedShortArray : public WebGLArray { + public: + virtual bool isUnsignedShortArray() const { return true; } + + static PassRefPtr<WebGLUnsignedShortArray> create(unsigned length); + static PassRefPtr<WebGLUnsignedShortArray> create(unsigned short* array, unsigned length); + static PassRefPtr<WebGLUnsignedShortArray> create(PassRefPtr<WebGLArrayBuffer> buffer, unsigned byteOffset, unsigned length); + + unsigned short* data() { return static_cast<unsigned short*>(baseAddress()); } + + virtual unsigned length() const; + virtual unsigned byteLength() const; + virtual PassRefPtr<WebGLArray> slice(int start, int end); + + void set(unsigned index, double value) + { + if (index >= m_size) + return; + if (isnan(value)) // Clamp NaN to 0 + value = 0; + if (value < std::numeric_limits<unsigned short>::min()) + value = std::numeric_limits<unsigned short>::min(); + else if (value > std::numeric_limits<unsigned short>::max()) + value = std::numeric_limits<unsigned short>::max(); + unsigned short* storage = static_cast<unsigned short*>(m_baseAddress); + storage[index] = static_cast<unsigned short>(value); + } + + bool get(unsigned index, unsigned short& result) const + { + if (index >= m_size) + return false; + unsigned short* storage = static_cast<unsigned short*>(m_baseAddress); + result = storage[index]; + return true; + } + + unsigned short get(unsigned index) const + { + return item(index); + } + + unsigned short item(unsigned index) const + { + ASSERT(index < m_size); + unsigned short* storage = static_cast<unsigned short*>(m_baseAddress); + return storage[index]; + } + + void set(WebGLUnsignedShortArray* array, unsigned offset, ExceptionCode& ec); + + private: + WebGLUnsignedShortArray(PassRefPtr<WebGLArrayBuffer> buffer, unsigned byteOffset,unsigned length); + unsigned m_size; +}; + +} // namespace WebCore + +#endif // WebGLUnsignedShortArray_h |