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

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• Author : jchen10
  Date : 2017-06-13 10:44:11
  Hash : eaef1e5e
  Message : Link atomic counters to buffers Gather counters from each shader and group them according the layout qualifier 'binding' into each buffer. BUG=angleproject:1729 TEST=angle_end2end_tests:AtomicCounterBufferTest Change-Id: I8d0cd0d2bf65be37c035b0e1540481c8bee0bae4

• 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);
  }
  
  ANGLE_INSTANTIATE_TEST(AtomicCounterBufferTest,
                         ES3_OPENGL(),
                         ES3_OPENGLES(),
                         ES31_OPENGL(),
                         ES31_OPENGLES());
  ANGLE_INSTANTIATE_TEST(AtomicCounterBufferTest31, ES31_OPENGL(), ES31_OPENGLES());
  
  }  // namespace