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

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• Hash : 876429b7
  Author :
  Date : 2017-04-20T15:46:24
  

  Update gl2.h and update entry points.
  
  Some method signatures were updated. Types like GLclampf and GLvoid
  were replaced with other equivalents.
  
  BUG=angleproject:1309
  
  Change-Id: I05e8e2072c5a063d87ad96a855b907424661e680
  Reviewed-on: https://chromium-review.googlesource.com/475011
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/gl_tests/PBOExtensionTest.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"
  
  using namespace angle;
  
  class PBOExtensionTest : public ANGLETest
  {
    protected:
      PBOExtensionTest()
      {
          setWindowWidth(32);
          setWindowHeight(32);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      virtual void SetUp()
      {
          ANGLETest::SetUp();
  
          if (extensionEnabled("NV_pixel_buffer_object"))
          {
              glGenBuffers(1, &mPBO);
              glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
              glBufferData(GL_PIXEL_PACK_BUFFER, 4 * getWindowWidth() * getWindowHeight(), nullptr,
                           GL_STATIC_DRAW);
              glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
  
              const char *vertexShaderSrc = SHADER_SOURCE
              (
                  attribute vec4 aTest;
                  attribute vec2 aPosition;
                  varying vec4 vTest;
  
                  void main()
                  {
                      vTest = aTest;
                      gl_Position = vec4(aPosition, 0.0, 1.0);
                      gl_PointSize = 1.0;
                  }
              );
  
              const char *fragmentShaderSrc = SHADER_SOURCE
              (
                  precision mediump float;
                  varying vec4 vTest;
  
                  void main()
                  {
                      gl_FragColor = vTest;
                  }
              );
  
              mProgram = CompileProgram(vertexShaderSrc, fragmentShaderSrc);
  
              glGenBuffers(1, &mPositionVBO);
              glBindBuffer(GL_ARRAY_BUFFER, mPositionVBO);
              glBufferData(GL_ARRAY_BUFFER, 128, nullptr, GL_DYNAMIC_DRAW);
              glBindBuffer(GL_ARRAY_BUFFER, 0);
          }
          ASSERT_GL_NO_ERROR();
      }
  
      virtual void TearDown()
      {
          ANGLETest::TearDown();
  
          glDeleteBuffers(1, &mPBO);
          glDeleteProgram(mProgram);
      }
  
      GLuint mPBO;
      GLuint mProgram;
      GLuint mPositionVBO;
  };
  
  TEST_P(PBOExtensionTest, PBOWithOtherTarget)
  {
      if (extensionEnabled("NV_pixel_buffer_object"))
      {
          glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
          glClear(GL_COLOR_BUFFER_BIT);
          EXPECT_GL_NO_ERROR();
  
          glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
          glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0);
  
          glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
          glBindBuffer(GL_ARRAY_BUFFER, mPBO);
  
          void *mappedPtr        = glMapBufferRangeEXT(GL_ARRAY_BUFFER, 0, 32, GL_MAP_READ_BIT);
          unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr);
          EXPECT_GL_NO_ERROR();
  
          EXPECT_EQ(255, dataPtr[0]);
          EXPECT_EQ(0,   dataPtr[1]);
          EXPECT_EQ(0,   dataPtr[2]);
          EXPECT_EQ(255, dataPtr[3]);
  
          glUnmapBufferOES(GL_ARRAY_BUFFER);
      }
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(PBOExtensionTest, PBOWithExistingData)
  {
      if (extensionEnabled("NV_pixel_buffer_object"))
      {
          // Clear backbuffer to red
          glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
          glClear(GL_COLOR_BUFFER_BIT);
          EXPECT_GL_NO_ERROR();
  
          // Read 16x16 region from red backbuffer to PBO
          glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
          glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0);
  
          // Clear backbuffer to green
          glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
          glClear(GL_COLOR_BUFFER_BIT);
          EXPECT_GL_NO_ERROR();
  
          // Read 16x16 region from green backbuffer to PBO at offset 16
          glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, reinterpret_cast<void *>(16));
          void *mappedPtr        = glMapBufferRangeEXT(GL_PIXEL_PACK_BUFFER, 0, 32, GL_MAP_READ_BIT);
          unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr);
          EXPECT_GL_NO_ERROR();
  
          // Test pixel 0 is red (existing data)
          EXPECT_EQ(255, dataPtr[0]);
          EXPECT_EQ(0, dataPtr[1]);
          EXPECT_EQ(0, dataPtr[2]);
          EXPECT_EQ(255, dataPtr[3]);
  
          // Test pixel 16 is green (new data)
          EXPECT_EQ(0, dataPtr[16 * 4 + 0]);
          EXPECT_EQ(255, dataPtr[16 * 4 + 1]);
          EXPECT_EQ(0, dataPtr[16 * 4 + 2]);
          EXPECT_EQ(255, dataPtr[16 * 4 + 3]);
  
          glUnmapBufferOES(GL_PIXEL_PACK_BUFFER);
      }
      EXPECT_GL_NO_ERROR();
  }
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
  ANGLE_INSTANTIATE_TEST(PBOExtensionTest, ES2_D3D11(), ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES());
  

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