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

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• Hash : 5804dc8e
  Author :
  Date : 2018-04-13T14:11:46
  

  Refactor GL tests to use a shader library
  
  Instead of having the same simple shaders repeated over and over in
  the test code, reuse a single shader library.
  
  BUG=angleproject:2474
  TEST=angle_end2end_tests
  
  Change-Id: I13f8ca8c0125e6d30f1761639bf8c3f69e0e77d2
  Reviewed-on: https://chromium-review.googlesource.com/1012078
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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• src/tests/gl_tests/AtomicCounterBufferTest.cpp

• //
  // Copyright 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.
  //
  // AtomicCounterBufferTest:
  //   Various tests related for atomic counter buffers.
  //
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  
  using namespace angle;
  
  namespace
  {
  
  class AtomicCounterBufferTest : public ANGLETest
  {
    protected:
      AtomicCounterBufferTest()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  // Test GL_ATOMIC_COUNTER_BUFFER is not supported with version lower than ES31.
  TEST_P(AtomicCounterBufferTest, AtomicCounterBufferBindings)
  {
      ASSERT_EQ(3, getClientMajorVersion());
      GLBuffer atomicCounterBuffer;
      glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 1, atomicCounterBuffer.get());
      if (getClientMinorVersion() < 1)
      {
          EXPECT_GL_ERROR(GL_INVALID_ENUM);
      }
      else
      {
          EXPECT_GL_NO_ERROR();
      }
  }
  
  class AtomicCounterBufferTest31 : public AtomicCounterBufferTest
  {
  };
  
  // Linking should fail if counters in vertex shader exceed gl_MaxVertexAtomicCounters.
  TEST_P(AtomicCounterBufferTest31, ExceedMaxVertexAtomicCounters)
  {
      const std::string &vertexShaderSource =
          "#version 310 es\n"
          "layout(binding = 2) uniform atomic_uint foo[gl_MaxVertexAtomicCounters + 1];\n"
          "void main()\n"
          "{\n"
          "    atomicCounterIncrement(foo[0]);\n"
          "}\n";
      const std::string &fragmentShaderSource =
          "#version 310 es\n"
          "void main()\n"
          "{\n"
          "}\n";
  
      GLuint program = CompileProgram(vertexShaderSource, fragmentShaderSource);
      EXPECT_EQ(0u, program);
  }
  
  // Counters matching across shader stages should fail if offsets aren't all specified.
  // GLSL ES Spec 3.10.4, section 9.2.1.
  TEST_P(AtomicCounterBufferTest31, OffsetNotAllSpecified)
  {
      const std::string &vertexShaderSource =
          "#version 310 es\n"
          "layout(binding = 2, offset = 4) uniform atomic_uint foo;\n"
          "void main()\n"
          "{\n"
          "    atomicCounterIncrement(foo);\n"
          "}\n";
      const std::string &fragmentShaderSource =
          "#version 310 es\n"
          "layout(binding = 2) uniform atomic_uint foo;\n"
          "void main()\n"
          "{\n"
          "}\n";
  
      GLuint program = CompileProgram(vertexShaderSource, fragmentShaderSource);
      EXPECT_EQ(0u, program);
  }
  
  // Counters matching across shader stages should fail if offsets aren't all specified with same
  // value.
  TEST_P(AtomicCounterBufferTest31, OffsetNotAllSpecifiedWithSameValue)
  {
      const std::string &vertexShaderSource =
          "#version 310 es\n"
          "layout(binding = 2, offset = 4) uniform atomic_uint foo;\n"
          "void main()\n"
          "{\n"
          "    atomicCounterIncrement(foo);\n"
          "}\n";
      const std::string &fragmentShaderSource =
          "#version 310 es\n"
          "layout(binding = 2, offset = 8) uniform atomic_uint foo;\n"
          "void main()\n"
          "{\n"
          "}\n";
  
      GLuint program = CompileProgram(vertexShaderSource, fragmentShaderSource);
      EXPECT_EQ(0u, program);
  }
  
  // Test atomic counter read.
  TEST_P(AtomicCounterBufferTest31, AtomicCounterRead)
  {
      const std::string &fragShader =
          "#version 310 es\n"
          "precision highp float;\n"
          "layout(binding = 2, offset = 4) uniform atomic_uint ac;\n"
          "out highp vec4 my_color;\n"
          "void main()\n"
          "{\n"
          "    my_color = vec4(0.0);\n"
          "    uint a1 = atomicCounter(ac);\n"
          "    if (a1 == 3u) my_color = vec4(1.0);\n"
          "}\n";
  
      ANGLE_GL_PROGRAM(program, essl31_shaders::vs::Simple(), fragShader);
  
      glUseProgram(program.get());
  
      // The initial value of counter 'ac' is 3u.
      unsigned int bufferData[3] = {11u, 3u, 1u};
      GLBuffer atomicCounterBuffer;
      glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
      glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);
  
      glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 2, atomicCounterBuffer);
  
      drawQuad(program.get(), essl31_shaders::PositionAttrib(), 0.0f);
      ASSERT_GL_NO_ERROR();
      EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::white);
  }
  
  // Test atomic counter increment and decrement.
  TEST_P(AtomicCounterBufferTest31, AtomicCounterIncrementAndDecrement)
  {
      const std::string &csSource =
          "#version 310 es\n"
          "layout(local_size_x=1, local_size_y=1, local_size_z=1) in;\n"
          "layout(binding = 2, offset = 4) uniform atomic_uint ac[2];\n"
          "void main()\n"
          "{\n"
          "    atomicCounterIncrement(ac[0]);\n"
          "    atomicCounterDecrement(ac[1]);\n"
          "}\n";
  
      ANGLE_GL_COMPUTE_PROGRAM(program, csSource);
  
      glUseProgram(program.get());
  
      // The initial value of 'ac[0]' is 3u, 'ac[1]' is 1u.
      unsigned int bufferData[3] = {11u, 3u, 1u};
      GLBuffer atomicCounterBuffer;
      glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
      glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(bufferData), bufferData, GL_STATIC_DRAW);
  
      glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 2, atomicCounterBuffer);
  
      glDispatchCompute(1, 1, 1);
      EXPECT_GL_NO_ERROR();
  
      glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, atomicCounterBuffer);
      void *mappedBuffer =
          glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(GLuint) * 3, GL_MAP_READ_BIT);
      memcpy(bufferData, mappedBuffer, sizeof(bufferData));
      glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
  
      EXPECT_EQ(11u, bufferData[0]);
      EXPECT_EQ(4u, bufferData[1]);
      EXPECT_EQ(0u, bufferData[2]);
  }
  
  ANGLE_INSTANTIATE_TEST(AtomicCounterBufferTest,
                         ES3_OPENGL(),
                         ES3_OPENGLES(),
                         ES31_OPENGL(),
                         ES31_OPENGLES());
  ANGLE_INSTANTIATE_TEST(AtomicCounterBufferTest31, ES31_OPENGL(), ES31_OPENGLES());
  
  }  // namespace
  

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