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

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• Author : Geoff Lang
  Date : 2015-07-21 18:56:48
  Hash : 91d56945
  Message : Emulate the pack/unpack functions for unorms. BUG=angleproject:1044 Change-Id: I2cfb792de43d3a6fddd750100c74f948948dc1f6 Reviewed-on: https://chromium-review.googlesource.com/287290 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

• src/tests/compiler_tests/Pack_Unpack_test.cpp

• //
  // Copyright (c) 2015 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.
  //
  // Pack_Unpack_test.cpp:
  //   Tests for the emulating pack_unpack functions for GLSL.
  //
  
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "GLSLANG/ShaderLang.h"
  #include "tests/test_utils/compiler_test.h"
  
  namespace
  {
  
  class PackUnpackTest : public MatchOutputCodeTest
  {
    public:
      PackUnpackTest() : MatchOutputCodeTest(GL_FRAGMENT_SHADER, 0, SH_GLSL_400_CORE_OUTPUT) {}
  };
  
  // Check if PackSnorm2x16 Emulation for GLSL < 4.2 compile correctly.
  TEST_F(PackUnpackTest, PackSnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u = packSnorm2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("uint webgl_packSnorm2x16_emu(vec2 v)"));
  }
  
  // Check if UnpackSnorm2x16 Emulation for GLSL < 4.2 compile correctly.
  TEST_F(PackUnpackTest, UnpackSnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackSnorm2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("vec2 webgl_unpackSnorm2x16_emu(uint u)"));
  }
  
  // Check if PackUnorm2x16 Emulation for GLSL < 4.1 compiles correctly.
  TEST_F(PackUnpackTest, PackUnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u = packUnorm2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("uint webgl_packUnorm2x16_emu(vec2 v)"));
  }
  
  // Check if UnpackSnorm2x16 Emulation for GLSL < 4.1 compiles correctly.
  TEST_F(PackUnpackTest, UnpackUnorm2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackUnorm2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("vec2 webgl_unpackUnorm2x16_emu(uint u)"));
  }
  
  // Check if PackHalf2x16 Emulation for GLSL < 4.2 compiles correctly.
  TEST_F(PackUnpackTest, PackHalf2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   vec2 v;\n"
          "   uint u=packHalf2x16(v);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("uint webgl_packHalf2x16_emu(vec2 v)"));
  }
  
  // Check if UnpackHalf2x16 Emulation for GLSL < 4.2 compiles correctly.
  TEST_F(PackUnpackTest, UnpackHalf2x16Emulation)
  {
      const std::string &shaderString =
          "#version 300 es\n"
          "precision mediump float;\n"
          "layout(location = 0) out mediump vec4 fragColor;"
          "void main() {\n"
          "   uint u;\n"
          "   vec2 v=unpackHalf2x16(u);\n"
          "   fragColor = vec4(0.0);\n"
          "}\n";
      compile(shaderString);
      ASSERT_TRUE(foundInCode("vec2 webgl_unpackHalf2x16_emu(uint u)"));
  }
  
  } // namespace