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/*
* Copyright (C) 2009, 2014-2019 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 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 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.
*/
#pragma once
#if ENABLE(WEBGL)
#include "GraphicsContextGL.h"
#include <wtf/HashCountedSet.h>
#include <wtf/HashMap.h>
#include <wtf/HashTraits.h>
namespace WebCore {
struct GraphicsContextGLState {
GCGLuint boundReadFBO { 0 };
GCGLuint boundDrawFBO { 0 };
GCGLenum activeTextureUnit { GraphicsContextGL::TEXTURE0 };
using BoundTextureMap = UncheckedKeyHashMap<GCGLenum,
std::pair<GCGLuint, GCGLenum>,
IntHash<GCGLenum>,
WTF::UnsignedWithZeroKeyHashTraits<GCGLuint>,
PairHashTraits<WTF::UnsignedWithZeroKeyHashTraits<GCGLuint>, WTF::UnsignedWithZeroKeyHashTraits<GCGLuint>>
>;
BoundTextureMap boundTextureMap;
GCGLuint currentBoundTexture() const { return boundTexture(activeTextureUnit); }
GCGLuint boundTexture(GCGLenum textureUnit) const
{
auto iterator = boundTextureMap.find(textureUnit);
if (iterator != boundTextureMap.end())
return iterator->value.first;
return 0;
}
GCGLuint currentBoundTarget() const { return boundTarget(activeTextureUnit); }
GCGLenum boundTarget(GCGLenum textureUnit) const
{
auto iterator = boundTextureMap.find(textureUnit);
if (iterator != boundTextureMap.end())
return iterator->value.second;
return 0;
}
void setBoundTexture(GCGLenum textureUnit, GCGLuint texture, GCGLenum target)
{
boundTextureMap.set(textureUnit, std::make_pair(texture, target));
}
};
}
#endif
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