| /* |
| * 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_ |