kc3-lang/angle/src/tests/compiler_tests/TextureFunction_test.cpp

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• Author : Olli Etuaho
  Date : 2018-03-02 15:54:56
  Hash : 28cf920e
  Message : Fix checking texture function offset There was a mistake in one of the texture offset function names being checked. Fix it and add a test making sure that a similar mistake cannot slip in again. BUG=angleproject:2387 TEST=angle_unittests Change-Id: I2dddfbdc2836f9e7e94ca6573a8f3689eecf7eb2 Reviewed-on: https://chromium-review.googlesource.com/946254 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

• src/tests/compiler_tests/TextureFunction_test.cpp

• //
  // Copyright (c) 2018 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.
  //
  // TextureFunction_test.cpp:
  //   Tests that malformed texture function calls don't pass compilation.
  //
  
  #include <array>
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "tests/test_utils/ShaderCompileTreeTest.h"
  
  using namespace sh;
  
  class TextureFunctionTest : public ShaderCompileTreeTest
  {
    public:
      TextureFunctionTest() {}
  
    protected:
      ::GLenum getShaderType() const override { return GL_FRAGMENT_SHADER; }
      ShShaderSpec getShaderSpec() const override { return SH_GLES3_1_SPEC; }
  };
  
  // Test that none of the texture offset functions can take a non-constant parameter.
  TEST_F(TextureFunctionTest, NonConstantOffset)
  {
      const std::string &shaderTemplate =
          R"(#version 310 es
          precision mediump float;
          out vec4 my_FragColor;
          uniform sampler2D s;
          uniform vec4 samplePos;
  
          void main()
          {
              my_FragColor = {sample};
          })";
  
      const std::array<const std::string, 10> sampleVariants(
          {"texelFetchOffset(s, ivec2(samplePos.xy), 0, {offset})",
           "textureLodOffset(s, samplePos.xy, 0.0, {offset})",
           "textureProjLodOffset(s, samplePos.xyz, 0.0, {offset})",
           "textureGradOffset(s, samplePos.xy, vec2(1.0), vec2(1.0), {offset})",
           "textureProjGradOffset(s, samplePos.xyz, vec2(1.0), vec2(1.0), {offset})",
           "textureOffset(s, samplePos.xy, {offset})",
           "textureOffset(s, samplePos.xy, {offset}, 1.0)",
           "textureProjOffset(s, samplePos.xyz, {offset})",
           "textureProjOffset(s, samplePos.xyz, {offset}, 1.0)",
           "textureGatherOffset(s, samplePos.xy, {offset})"});
  
      size_t sampleReplacePos = shaderTemplate.find("{sample}");
  
      for (auto &variantTemplate : sampleVariants)
      {
          size_t offsetReplacePos = variantTemplate.find("{offset}");
  
          std::string variantConst = variantTemplate;
          variantConst.replace(offsetReplacePos, 8, "ivec2(0, 0)");
  
          std::string shaderValid = shaderTemplate;
          shaderValid.replace(sampleReplacePos, 8, variantConst);
          if (!compile(shaderValid))
          {
              FAIL() << "Shader compilation failed with sample function " << variantConst
                     << ", expecting success:\n"
                     << mInfoLog;
          }
  
          std::string variantNonConst = variantTemplate;
          variantNonConst.replace(offsetReplacePos, 8, "ivec2(samplePos.xy)");
  
          std::string shaderNonConst = shaderTemplate;
          shaderNonConst.replace(sampleReplacePos, 8, variantNonConst);
          if (compile(shaderNonConst))
          {
              FAIL() << "Shader compilation succeeded with sample function " << variantNonConst
                     << ", expecting failure:\n"
                     << mInfoLog;
          }
  
          std::string variantOutOfBounds = variantTemplate;
          variantOutOfBounds.replace(offsetReplacePos, 8, "ivec2(1000, 1000)");
  
          std::string shaderOutOfBounds = shaderTemplate;
          shaderOutOfBounds.replace(sampleReplacePos, 8, variantOutOfBounds);
          if (compile(shaderOutOfBounds))
          {
              FAIL() << "Shader compilation succeeded with sample function " << variantOutOfBounds
                     << ", expecting failure:\n"
                     << mInfoLog;
          }
      }
  }