Hash :
bb27c3a1
        
        Author :
  
        
        Date :
2017-11-15T16:32:25
        
      
Fix VectorizeVectorScalarArithmetic statement insertion The traverser must avoid inserting two statements to the same position on a single traversal, so it doesn't trigger an assert. BUG=chromium:784078 TEST=angle_unittests Change-Id: I855054e62cc1b1cf4e6bb02af527954151c7d0e7 Reviewed-on: https://chromium-review.googlesource.com/771611 Commit-Queue: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
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//
// Copyright (c) 2017 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.
//
// VectorizeVectorScalarArithmetic_test.cpp:
//  Tests shader compilation with SH_REWRITE_VECTOR_SCALAR_ARITHMETIC workaround on.
#include "GLSLANG/ShaderLang.h"
#include "angle_gl.h"
#include "gtest/gtest.h"
#include "tests/test_utils/ShaderCompileTreeTest.h"
using namespace sh;
class VectorizeVectorScalarArithmeticTest : public ShaderCompileTreeTest
{
  public:
    VectorizeVectorScalarArithmeticTest() : ShaderCompileTreeTest()
    {
        mExtraCompileOptions = SH_REWRITE_VECTOR_SCALAR_ARITHMETIC;
    }
  protected:
    ::GLenum getShaderType() const override { return GL_FRAGMENT_SHADER; }
    ShShaderSpec getShaderSpec() const override { return SH_GLES3_1_SPEC; }
};
// Test that two ops that generate statements in the parent block inside the same statement don't
// trigger an assert.
TEST_F(VectorizeVectorScalarArithmeticTest, TwoMutatedOpsWithSideEffectsInsideSameStatement)
{
    const std::string &shaderString =
        R"(#version 300 es
        precision highp float;
        out vec4 res;
        uniform float uf;
        void main()
        {
            res = vec4(0.0);
            float f = uf;
            res += f *= f, res += f *= f;
        })";
    if (!compile(shaderString))
    {
        FAIL() << "Shader compilation failed, expecting success:\n" << mInfoLog;
    }
}