qt5base-lts/config.tests/unix/opengles3/opengles3.cpp

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#ifdef BUILD_ON_MAC
  #include <OpenGLES/ES3/gl.h>
#else
  #include <GLES3/gl3.h>
#endif

int main(int, char **)
{
    glGetStringi(GL_EXTENSIONS, 0);
    glReadBuffer(GL_COLOR_ATTACHMENT1);
    static GLfloat f[6];
    glUniformMatrix2x3fv(0, 0, GL_FALSE, f);
    glMapBufferRange(GL_ARRAY_BUFFER, 0, 0, GL_MAP_READ_BIT);

    return 0;
}