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/*
* Copyright (C) 2012 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.
*/
#ifndef THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_
#define THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_
#include "compiler/translator/InfoSink.h"
#include "compiler/translator/IntermNode.h"
namespace sh
{
class ArrayBoundsClamper
{
public:
ArrayBoundsClamper();
// Must be set before compiling any shaders to ensure consistency
// between the translated shaders and any necessary prequel.
void SetClampingStrategy(ShArrayIndexClampingStrategy clampingStrategy);
// Marks nodes in the tree that index arrays indirectly as
// requiring clamping.
void MarkIndirectArrayBoundsForClamping(TIntermNode* root);
// If necessary, output array clamp function source into the shader source.
void OutputClampingFunctionDefinition(TInfoSinkBase& out) const;
void Cleanup()
{
mArrayBoundsClampDefinitionNeeded = false;
}
private:
bool GetArrayBoundsClampDefinitionNeeded() const { return mArrayBoundsClampDefinitionNeeded; }
void SetArrayBoundsClampDefinitionNeeded() { mArrayBoundsClampDefinitionNeeded = true; }
ShArrayIndexClampingStrategy mClampingStrategy;
bool mArrayBoundsClampDefinitionNeeded;
};
} // namespace sh
#endif // THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_
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