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-rw-r--r--src/3rdparty/angle/src/compiler/translator/ExpandIntegerPowExpressions.cpp153
1 files changed, 0 insertions, 153 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/ExpandIntegerPowExpressions.cpp b/src/3rdparty/angle/src/compiler/translator/ExpandIntegerPowExpressions.cpp
deleted file mode 100644
index f17dd73657..0000000000
--- a/src/3rdparty/angle/src/compiler/translator/ExpandIntegerPowExpressions.cpp
+++ /dev/null
@@ -1,153 +0,0 @@
-//
-// Copyright (c) 2016 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-// Implementation of the integer pow expressions HLSL bug workaround.
-// See header for more info.
-
-#include "compiler/translator/ExpandIntegerPowExpressions.h"
-
-#include <cmath>
-#include <cstdlib>
-
-#include "compiler/translator/IntermTraverse.h"
-
-namespace sh
-{
-
-namespace
-{
-
-class Traverser : public TIntermTraverser
-{
- public:
- static void Apply(TIntermNode *root, TSymbolTable *symbolTable);
-
- private:
- Traverser(TSymbolTable *symbolTable);
- bool visitAggregate(Visit visit, TIntermAggregate *node) override;
- void nextIteration();
-
- bool mFound = false;
-};
-
-// static
-void Traverser::Apply(TIntermNode *root, TSymbolTable *symbolTable)
-{
- Traverser traverser(symbolTable);
- do
- {
- traverser.nextIteration();
- root->traverse(&traverser);
- if (traverser.mFound)
- {
- traverser.updateTree();
- }
- } while (traverser.mFound);
-}
-
-Traverser::Traverser(TSymbolTable *symbolTable) : TIntermTraverser(true, false, false, symbolTable)
-{
-}
-
-void Traverser::nextIteration()
-{
- mFound = false;
- nextTemporaryId();
-}
-
-bool Traverser::visitAggregate(Visit visit, TIntermAggregate *node)
-{
- if (mFound)
- {
- return false;
- }
-
- // Test 0: skip non-pow operators.
- if (node->getOp() != EOpPow)
- {
- return true;
- }
-
- const TIntermSequence *sequence = node->getSequence();
- ASSERT(sequence->size() == 2u);
- const TIntermConstantUnion *constantNode = sequence->at(1)->getAsConstantUnion();
-
- // Test 1: check for a single constant.
- if (!constantNode || constantNode->getNominalSize() != 1)
- {
- return true;
- }
-
- const TConstantUnion *constant = constantNode->getUnionArrayPointer();
-
- TConstantUnion asFloat;
- asFloat.cast(EbtFloat, *constant);
-
- float value = asFloat.getFConst();
-
- // Test 2: value is in the problematic range.
- if (value < -5.0f || value > 9.0f)
- {
- return true;
- }
-
- // Test 3: value is integer or pretty close to an integer.
- float absval = std::abs(value);
- float frac = absval - std::round(absval);
- if (frac > 0.0001f)
- {
- return true;
- }
-
- // Test 4: skip -1, 0, and 1
- int exponent = static_cast<int>(value);
- int n = std::abs(exponent);
- if (n < 2)
- {
- return true;
- }
-
- // Potential problem case detected, apply workaround.
- nextTemporaryId();
-
- TIntermTyped *lhs = sequence->at(0)->getAsTyped();
- ASSERT(lhs);
-
- TIntermDeclaration *init = createTempInitDeclaration(lhs);
- TIntermTyped *current = createTempSymbol(lhs->getType());
-
- insertStatementInParentBlock(init);
-
- // Create a chain of n-1 multiples.
- for (int i = 1; i < n; ++i)
- {
- TIntermBinary *mul = new TIntermBinary(EOpMul, current, createTempSymbol(lhs->getType()));
- mul->setLine(node->getLine());
- current = mul;
- }
-
- // For negative pow, compute the reciprocal of the positive pow.
- if (exponent < 0)
- {
- TConstantUnion *oneVal = new TConstantUnion();
- oneVal->setFConst(1.0f);
- TIntermConstantUnion *oneNode = new TIntermConstantUnion(oneVal, node->getType());
- TIntermBinary *div = new TIntermBinary(EOpDiv, oneNode, current);
- current = div;
- }
-
- queueReplacement(current, OriginalNode::IS_DROPPED);
- mFound = true;
- return false;
-}
-
-} // anonymous namespace
-
-void ExpandIntegerPowExpressions(TIntermNode *root, TSymbolTable *symbolTable)
-{
- Traverser::Apply(root, symbolTable);
-}
-
-} // namespace sh