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      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 }
    100