src/third_party/angle/tests/angle_tests/ClearTest.cpp

   1 #include "ANGLETest.h"
   2
   3 class ClearTest : public ANGLETest
   4 {
   5 protected:
   6     ClearTest()
   7     {
   8         setWindowWidth(128);
   9         setWindowHeight(128);
  10         setConfigRedBits(8);
  11         setConfigGreenBits(8);
  12         setConfigBlueBits(8);
  13         setConfigAlphaBits(8);
  14         setConfigDepthBits(24);
  15     }
  16
  17     virtual void SetUp()
  18     {
  19         ANGLETest::SetUp();
  20
  21         const std::string vertexShaderSource = SHADER_SOURCE
  22         (
  23             precision highp float;
  24             attribute vec4 position;
  25
  26             void main()
  27             {
  28                 gl_Position = position;
  29             }
  30         );
  31
  32         const std::string fragmentShaderSource = SHADER_SOURCE
  33         (
  34             precision highp float;
  35
  36             void main()
  37             {
  38                 gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  39             }
  40         );
  41
  42         mProgram = compileProgram(vertexShaderSource, fragmentShaderSource);
  43         if (mProgram == 0)
  44         {
  45             FAIL() << "shader compilation failed.";
  46         }
  47     }
  48
  49     virtual void TearDown()
  50     {
  51         glDeleteProgram(mProgram);
  52
  53         ANGLETest::TearDown();
  54     }
  55
  56     GLuint mProgram;
  57 };
  58
  59 TEST_F(ClearTest, clear_issue)
  60 {
  61     EXPECT_GL_NO_ERROR();
  62
  63     glEnable(GL_DEPTH_TEST);
  64     glDepthFunc(GL_LEQUAL);
  65
  66     glClearColor(0.0, 1.0, 0.0, 1.0);
  67     glClearDepthf(0.0);
  68     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  69
  70     EXPECT_GL_NO_ERROR();
  71
  72     GLuint fbo;
  73     glGenFramebuffers(1, &fbo);
  74     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  75
  76     GLuint rbo;
  77     glGenRenderbuffers(1, &rbo);
  78     glBindRenderbuffer(GL_RENDERBUFFER, rbo);
  79     glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB565, 16, 16);
  80
  81     EXPECT_GL_NO_ERROR();
  82
  83     glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo);
  84
  85     EXPECT_GL_NO_ERROR();
  86
  87     glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
  88     glClearDepthf(1.0f);
  89     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  90
  91     EXPECT_GL_NO_ERROR();
  92
  93     glBindFramebuffer(GL_FRAMEBUFFER, 0);
  94     glBindBuffer(GL_ARRAY_BUFFER, 0);
  95
  96     drawQuad(mProgram, "position", 0.5f);
  97
  98     EXPECT_PIXEL_EQ(0, 0, 0, 255, 0, 255);
  99 }