1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/third_party/compiler/ArrayBoundsClamper.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,62 @@
1.4 +/*
1.5 + * Copyright (C) 2012 Apple Inc. All rights reserved.
1.6 + *
1.7 + * Redistribution and use in source and binary forms, with or without
1.8 + * modification, are permitted provided that the following conditions
1.9 + * are met:
1.10 + * 1. Redistributions of source code must retain the above copyright
1.11 + * notice, this list of conditions and the following disclaimer.
1.12 + * 2. Redistributions in binary form must reproduce the above copyright
1.13 + * notice, this list of conditions and the following disclaimer in the
1.14 + * documentation and/or other materials provided with the distribution.
1.15 + *
1.16 + * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY
1.17 + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.18 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.19 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE, INC. OR
1.20 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.21 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.22 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.23 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
1.24 + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.25 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.26 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.27 + */
1.28 +
1.29 +#ifndef THIRD_PARTY_COMPILER_ARRAY_BOUNDS_CLAMPER_H_
1.30 +#define THIRD_PARTY_COMPILER_ARRAY_BOUNDS_CLAMPER_H_
1.31 +
1.32 +#include "GLSLANG/ShaderLang.h"
1.33 +
1.34 +#include "compiler/InfoSink.h"
1.35 +#include "compiler/intermediate.h"
1.36 +
1.37 +class ArrayBoundsClamper {
1.38 +public:
1.39 + ArrayBoundsClamper();
1.40 +
1.41 + // Must be set before compiling any shaders to ensure consistency
1.42 + // between the translated shaders and any necessary prequel.
1.43 + void SetClampingStrategy(ShArrayIndexClampingStrategy clampingStrategy);
1.44 +
1.45 + // Marks nodes in the tree that index arrays indirectly as
1.46 + // requiring clamping.
1.47 + void MarkIndirectArrayBoundsForClamping(TIntermNode* root);
1.48 +
1.49 + // If necessary, output array clamp function source into the shader source.
1.50 + void OutputClampingFunctionDefinition(TInfoSinkBase& out) const;
1.51 +
1.52 + void Cleanup()
1.53 + {
1.54 + mArrayBoundsClampDefinitionNeeded = false;
1.55 + }
1.56 +
1.57 +private:
1.58 + bool GetArrayBoundsClampDefinitionNeeded() const { return mArrayBoundsClampDefinitionNeeded; }
1.59 + void SetArrayBoundsClampDefinitionNeeded() { mArrayBoundsClampDefinitionNeeded = true; }
1.60 +
1.61 + ShArrayIndexClampingStrategy mClampingStrategy;
1.62 + bool mArrayBoundsClampDefinitionNeeded;
1.63 +};
1.64 +
1.65 +#endif // THIRD_PARTY_COMPILER_ARRAY_BOUNDS_CLAMPER_H_
