kc3-lang/angle/src/tests/gl_tests/IncompleteTextureTest.cpp

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• Hash : 35cd7332
  Author :
  Date : 2018-12-02T12:03:33
  

  Refactor test shader style.
  
  This change enforces a lot more consistency. We pass const char * to
  the Compile functions instead of std::string. Also fixes the
  indentation of C++11 block comments to be more consistent.
  
  Bug: angleproject:2995
  Change-Id: Id6e5ea94055d8cbd420df4ea2e81b2d96cb5ce78
  Reviewed-on: https://chromium-review.googlesource.com/c/1357103
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/tests/gl_tests/IncompleteTextureTest.cpp

• //
  // Copyright 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.
  //
  
  #include "test_utils/ANGLETest.h"
  
  #include <vector>
  #include "test_utils/gl_raii.h"
  
  using namespace angle;
  
  class IncompleteTextureTest : public ANGLETest
  {
    protected:
      IncompleteTextureTest()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      void SetUp() override
      {
          ANGLETest::SetUp();
  
          constexpr char kVS[] = R"(precision highp float;
  attribute vec4 position;
  varying vec2 texcoord;
  
  void main()
  {
      gl_Position = position;
      texcoord = (position.xy * 0.5) + 0.5;
  })";
  
          constexpr char kFS[] = R"(precision highp float;
  uniform sampler2D tex;
  varying vec2 texcoord;
  
  void main()
  {
      gl_FragColor = texture2D(tex, texcoord);
  })";
  
          mProgram = CompileProgram(kVS, kFS);
          if (mProgram == 0)
          {
              FAIL() << "shader compilation failed.";
          }
  
          mTextureUniformLocation = glGetUniformLocation(mProgram, "tex");
      }
  
      void TearDown() override
      {
          glDeleteProgram(mProgram);
  
          ANGLETest::TearDown();
      }
  
      GLuint mProgram;
      GLint mTextureUniformLocation;
  };
  
  class IncompleteTextureTestES3 : public ANGLETest
  {
    protected:
      IncompleteTextureTestES3()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  class IncompleteTextureTestES31 : public ANGLETest
  {
    protected:
      IncompleteTextureTestES31()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  // Test rendering with an incomplete texture.
  TEST_P(IncompleteTextureTest, IncompleteTexture2D)
  {
      GLTexture tex;
      glActiveTexture(GL_TEXTURE0);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      glUseProgram(mProgram);
      glUniform1i(mTextureUniformLocation, 0);
  
      constexpr GLsizei kTextureSize = 2;
      std::vector<GLColor> textureData(kTextureSize * kTextureSize, GLColor::red);
  
      // Make a complete texture.
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, kTextureSize, kTextureSize, 0, GL_RGBA,
                   GL_UNSIGNED_BYTE, textureData.data());
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  
      // Should be complete - expect red.
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red) << "complete texture should be red";
  
      // Make texture incomplete.
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
  
      // Should be incomplete - expect black.
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::black) << "incomplete texture should be black";
  
      // Make texture complete by defining the second mip.
      glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, kTextureSize >> 1, kTextureSize >> 1, 0, GL_RGBA,
                   GL_UNSIGNED_BYTE, textureData.data());
  
      // Should be complete - expect red.
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red) << "mip-complete texture should be red";
  }
  
  // Tests redefining a texture with half the size works as expected.
  TEST_P(IncompleteTextureTest, UpdateTexture)
  {
      GLTexture tex;
      glActiveTexture(GL_TEXTURE0);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      glUseProgram(mProgram);
      glUniform1i(mTextureUniformLocation, 0);
  
      constexpr GLsizei redTextureSize = 64;
      std::vector<GLColor> redTextureData(redTextureSize * redTextureSize, GLColor::red);
      for (GLint mip = 0; mip < 7; ++mip)
      {
          const GLsizei mipSize = redTextureSize >> mip;
  
          glTexImage2D(GL_TEXTURE_2D, mip, GL_RGBA, mipSize, mipSize, 0, GL_RGBA, GL_UNSIGNED_BYTE,
                       redTextureData.data());
      }
  
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
  
      constexpr GLsizei greenTextureSize = 32;
      std::vector<GLColor> greenTextureData(greenTextureSize * greenTextureSize, GLColor::green);
  
      for (GLint mip = 0; mip < 6; ++mip)
      {
          const GLsizei mipSize = greenTextureSize >> mip;
  
          glTexSubImage2D(GL_TEXTURE_2D, mip, mipSize, mipSize, mipSize, mipSize, GL_RGBA,
                          GL_UNSIGNED_BYTE, greenTextureData.data());
      }
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_EQ(getWindowWidth() - greenTextureSize, getWindowHeight() - greenTextureSize,
                            GLColor::green);
  }
  
  // Tests that incomplete textures don't get initialized with the unpack buffer contents.
  TEST_P(IncompleteTextureTestES3, UnpackBufferBound)
  {
      std::vector<GLColor> red(16, GLColor::red);
  
      GLBuffer unpackBuffer;
      glBindBuffer(GL_PIXEL_UNPACK_BUFFER, unpackBuffer);
      glBufferData(GL_PIXEL_UNPACK_BUFFER, red.size() * sizeof(GLColor), red.data(), GL_STATIC_DRAW);
  
      draw2DTexturedQuad(0.5f, 1.0f, true);
      ASSERT_GL_NO_ERROR();
  
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::black);
  }
  
  // Tests that the incomplete multisample texture has the correct alpha value.
  TEST_P(IncompleteTextureTestES31, MultisampleTexture)
  {
      constexpr char kVS[] = R"(#version 310 es
  in vec2 position;
  out vec2 texCoord;
  void main()
  {
      gl_Position = vec4(position, 0, 1);
      texCoord = (position * 0.5) + 0.5;
  })";
  
      constexpr char kFS[] = R"(#version 310 es
  precision mediump float;
  in vec2 texCoord;
  out vec4 color;
  uniform mediump sampler2DMS tex;
  void main()
  {
      ivec2 texSize = textureSize(tex);
      ivec2 texel = ivec2(vec2(texSize) * texCoord);
      color = texelFetch(tex, texel, 0);
  })";
  
      glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
      glClear(GL_COLOR_BUFFER_BIT);
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
  
      // The zero texture will be incomplete by default.
      ANGLE_GL_PROGRAM(program, kVS, kFS);
      drawQuad(program, "position", 0.5f);
      ASSERT_GL_NO_ERROR();
  
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::black);
  }
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these
  // tests should be run against.
  ANGLE_INSTANTIATE_TEST(IncompleteTextureTest,
                         ES2_D3D9(),
                         ES2_D3D11(),
                         ES2_OPENGL(),
                         ES2_OPENGLES(),
                         ES2_VULKAN());
  ANGLE_INSTANTIATE_TEST(IncompleteTextureTestES3, ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES());
  ANGLE_INSTANTIATE_TEST(IncompleteTextureTestES31, ES31_D3D11(), ES31_OPENGL(), ES31_OPENGLES());
  

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