1 /* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_ 27 #define THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_ 28 29 #include "compiler/translator/InfoSink.h" 30 #include "compiler/translator/IntermNode.h" 31 32 namespace sh 33 { 34 35 class ArrayBoundsClamper 36 { 37 public: 38 ArrayBoundsClamper(); 39 40 // Must be set before compiling any shaders to ensure consistency 41 // between the translated shaders and any necessary prequel. 42 void SetClampingStrategy(ShArrayIndexClampingStrategy clampingStrategy); 43 44 // Marks nodes in the tree that index arrays indirectly as 45 // requiring clamping. 46 void MarkIndirectArrayBoundsForClamping(TIntermNode *root); 47 48 // If necessary, output array clamp function source into the shader source. 49 void OutputClampingFunctionDefinition(TInfoSinkBase &out) const; 50 Cleanup()51 void Cleanup() { mArrayBoundsClampDefinitionNeeded = false; } 52 53 private: GetArrayBoundsClampDefinitionNeeded()54 bool GetArrayBoundsClampDefinitionNeeded() const { return mArrayBoundsClampDefinitionNeeded; } SetArrayBoundsClampDefinitionNeeded()55 void SetArrayBoundsClampDefinitionNeeded() { mArrayBoundsClampDefinitionNeeded = true; } 56 57 ShArrayIndexClampingStrategy mClampingStrategy; 58 bool mArrayBoundsClampDefinitionNeeded; 59 }; 60 61 } // namespace sh 62 63 #endif // THIRD_PARTY_COMPILER_ARRAYBOUNDSCLAMPER_H_ 64