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#ifndef NUX_OPENGLES_20
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CHECKGL(glGetIntegerv(GL_MAJOR_VERSION, &_opengl_major));
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CHECKGL(glGetIntegerv(GL_MINOR_VERSION, &_opengl_minor));
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_glsl_version_string = ANSI_TO_TCHAR(NUX_REINTERPRET_CAST(const char *, glGetString(GL_VERSION)));
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CHECKGL_MSG(glGetString(GL_VERSION));
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NString opengl_major;
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NString opengl_minor;
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_glsl_version_string.SplitAtFirstOccurenceOf(split, opengl_major, opengl_minor);
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_opengl_major = (char)opengl_major.GetTCharPtr()[0] - '0';
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_opengl_minor = (char)opengl_minor.GetTCharPtr()[0] - '0';
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if (_opengl_major >= 3)
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CHECKGL(glGetIntegerv(GL_MAJOR_VERSION, &_opengl_major));
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CHECKGL(glGetIntegerv(GL_MINOR_VERSION, &_opengl_minor));
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_opengl_major = 2;
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_opengl_minor = 0;
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CHECKGL_MSG(glGetString(GL_RENDERER));
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_openGL_version_string = ANSI_TO_TCHAR(NUX_REINTERPRET_CAST(const char *, glGetString(GL_VERSION)));
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CHECKGL_MSG(glGetString(GL_VERSION));
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#ifndef NUX_OPENGLES_20
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if (GLEW_VERSION_2_0)
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_glsl_version_string = ANSI_TO_TCHAR(NUX_REINTERPRET_CAST(const char *, glGetString(GL_SHADING_LANGUAGE_VERSION)));
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CHECKGL_MSG(glGetString(GL_SHADING_LANGUAGE_VERSION));
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_glsl_version_string.SplitAtFirstOccurenceOf(split, glsl_major, glsl_minor);
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nuxDebugMsg("Gpu Vendor: %s", _board_vendor_string.GetTCharPtr());
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nuxDebugMsg("Gpu Renderer: %s", _board_renderer_string.GetTCharPtr());
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nuxDebugMsg("Gpu OpenGL Version: %s", _openGL_version_string.GetTCharPtr());
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nuxDebugMsg("Gpu OpenGL Major Version: %d", _opengl_major);
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nuxDebugMsg("Gpu OpenGL Minor Version: %d", _opengl_minor);
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nuxDebugMsg("Gpu GLSL Version: %s", _glsl_version_string.GetTCharPtr());
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#ifndef NUX_OPENGLES_20
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// Get the version supported by the context that was set.
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int new_opengl_major;
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int new_opengl_minor;
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CHECKGL(glGetIntegerv(GL_MAJOR_VERSION, &new_opengl_major));
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CHECKGL(glGetIntegerv(GL_MINOR_VERSION, &new_opengl_minor));
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if ((new_opengl_major != _opengl_major) || (new_opengl_minor != _opengl_minor))
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nuxDebugMsg("The Gpu supports OpenGL %d.%d but version %d.%d has been requested.", _opengl_major, _opengl_minor, new_opengl_major, new_opengl_minor);
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NString TempStr = (const char *) TCharToUpperCase(_board_vendor_string.GetTCharPtr());
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if (TempStr.FindFirstOccurence("NVIDIA") != tstring::npos)