Hash :
6d37651a
        
        Author :
  
        
        Date :
2019-06-26T13:13:09
        
      
Vulkan: dFdy is incorrect when the framebuffer is flipped
To account for framebuffer flipping, `dFdy()` expressions
must be changed to:
    dFdy() * ANGLEUniforms.viewportYScale
Bug: angleproject:3487
Test: dEQP-GLES3.functional.shaders.derivate.dfdy.*
Change-Id: I38f25ba37fb8c5ae61cee5ac911df88ec4a93fef
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1678404
Commit-Queue: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
      
//
// Copyright 2019 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.
//
// FindFunction.cpp: Find functions.
#include "compiler/translator/tree_util/FindFunction.h"
#include "compiler/translator/IntermNode.h"
#include "compiler/translator/Symbol.h"
namespace sh
{
size_t FindFirstFunctionDefinitionIndex(TIntermBlock *root)
{
    const TIntermSequence &sequence = *root->getSequence();
    for (size_t index = 0; index < sequence.size(); ++index)
    {
        TIntermNode *node                       = sequence[index];
        TIntermFunctionDefinition *nodeFunction = node->getAsFunctionDefinition();
        if (nodeFunction != nullptr)
        {
            return index;
        }
    }
    return std::numeric_limits<size_t>::max();
}
}  // namespace sh