void RenderSystem::v_Render()
{
static const GLfloat black[] ={0.2f, 0.3f, 0.4f, 1.0f };
static const GLfloat one[] ={ 1.0f };
glClearBufferfv(GL_COLOR, 0, black);
glClearBufferfv(GL_DEPTH, 0, one);
m_Font.Render("Graphics card: " + GetGLRenderer(), 10, windowInfo.Height - 20);
m_Font.Render("GL Version: " + GetGLVersion(), 10, windowInfo.Height - 40);
m_Font.Render("GLSL Version: " + GetGLSLVersion(), 10, windowInfo.Height - 60);
m_Font.Render("FPS: " + std::to_string(m_Fps) , 10, 20);
}
bool zglCoreContextWin::CreateCoreContext()
{
if ( !m_tempContext )
return false;
bool makeCurResult = wglMakeCurrent( m_hDC, m_tempContext );
bool bCore = GL_LoadCreateWinCoreContext();
if (!bCore)
return false;
GetGLVersion(&m_major, &m_minor);
if( !makeCurResult || m_major < MAJOR || ( m_major == MAJOR && m_minor < MINOR ) )
{
wglMakeCurrent(NULL,NULL);
wglDeleteContext(m_tempContext);
return false;
}
int attribs[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, m_major,
WGL_CONTEXT_MINOR_VERSION_ARB, m_minor,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
m_Context = wglCreateContextAttribsARB(m_hDC,0, attribs);
if ( !m_Context )
return false;
LoadGL();
wglMakeCurrent(NULL,NULL);
wglDeleteContext(m_tempContext);
return true;
}
float HumanClientApp::GLVersion() const
{ return GetGLVersion(); }
int LoadFunctions()
{
int eCurrLoadStatus = LS_LOAD_FUNCTIONS_ALL;
iMajorVersion = 0;
iMinorVersion = 0;
//Clear the extensions, in case we loaded already.
gleIntClear();
//Get the base functions that we need just to process OpenGL.
gleIntLoadBaseFuncs();
//Get the version numbers.
GetGLVersion(&iMajorVersion, &iMinorVersion);
if(iMajorVersion < 3)
{
//Load the 2.1 core.
if(!gleIntLoad_Version_2_1()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
else if(iMajorVersion == 3 && iMinorVersion < 2)
{
switch(iMinorVersion)
{
case 0:
if(!gleIntLoad_Version_3_0()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
break;
case 1:
//Check the ARB_compatibility extension.
if(CheckCompatibilityExt())
{
if(!gleIntLoad_Version_3_1_Comp()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
else
{
if(!gleIntLoad_Version_3_1()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
break;
}
}
else
{
int iProfileMask = 0;
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &iProfileMask);
if(iProfileMask)
{
if(iProfileMask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
{
if(!gleIntLoad_Version_3_2_Comp()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
else
{
if(!gleIntLoad_Version_3_2()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
}
else
{
//Hack to fix NVIDIA stupidity.
if(CheckCompatibilityExt())
{
if(!gleIntLoad_Version_3_2_Comp()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
else
{
if(!gleIntLoad_Version_3_2()) eCurrLoadStatus = LS_LOAD_FUNCTIONS_SOME;
}
}
}
//Now, process the extensions.
//Use different methods if glGetStringi is available.
if(iMajorVersion < 3)
{
ProcExtFromExtString((const char *)glGetString(GL_EXTENSIONS), gleIntExtensionMap, gleIntExtensionMapSize);
}
else
{
ProcExtFromList();
}
return eCurrLoadStatus;
}
bool CGLDevice::Create30Context( const tInitStruct& initData )
{
// store some variables
m_hWnd = initData.hwnd;
m_hDC = GetDC(m_hWnd);
// choose PixelFormat
PIXELFORMATDESCRIPTOR pfd; // Create a new PIXELFORMATDESCRIPTOR (PFD)
memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR)); // Clear our PFD
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR); // Set the size of the PFD to the size of the class
pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW; // Enable double buffering, opengl support and drawing to a window
pfd.iPixelType = PFD_TYPE_RGBA; // Set our application to use RGBA pixels
pfd.cColorBits = 32; // Give us 32 bits of color information (the higher, the more colors)
pfd.cDepthBits = 32; // Give us 32 bits of depth information (the higher, the more depth levels)
pfd.iLayerType = PFD_MAIN_PLANE; // Set the layer of the PFD
int nPixelFormat = ChoosePixelFormat(m_hDC, &pfd); // Check if our PFD is valid and get a pixel format back
if (nPixelFormat == 0) // If it fails
return false;
BOOL bResult = SetPixelFormat(m_hDC, nPixelFormat, &pfd); // Try and set the pixel format based on our PFD
if (bResult == 0) // If it fails
return false;
HGLRC tempOpenGLContext = wglCreateContext(m_hDC); // Create an OpenGL 2.1 context for our device context
wglMakeCurrent(m_hDC, tempOpenGLContext); // Make the OpenGL 2.1 context current and active
// init GLEW (Have to be done after create a default Context)
GLenum error = glewInit(); // Enable GLEW
if (error != GLEW_OK) // If GLEW fails
return false;
// get OpenGL version
int32_t major, minor;
GetGLVersion(major, minor);
// *note* highly suggested to use CORE_PROFILE instead of COMPATIBLE_PROFILE
uint32_t context_flags = WGL_CONTEXT_DEBUG_BIT_ARB
//| WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB // Set our OpenGL context to be forward compatible
;
int attributes[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, major, // Set the MAJOR version of OpenGL to 4
WGL_CONTEXT_MINOR_VERSION_ARB, minor, // Set the MINOR version of OpenGL to 2
// *note* highly suggested to use CORE_PROFILE instead of COMPATIBLE_PROFILE
WGL_CONTEXT_FLAGS_ARB, context_flags,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
if (wglewIsSupported("WGL_ARB_create_context") == 1) { // If the OpenGL 3.x context creation extension is available
m_hRC = wglCreateContextAttribsARB(m_hDC, NULL, attributes); // Create and OpenGL 3.x context based on the given attributes
wglMakeCurrent(NULL, NULL); // Remove the temporary context from being active
wglDeleteContext(tempOpenGLContext); // Delete the temporary OpenGL 2.1 context
wglMakeCurrent(m_hDC, m_hRC); // Make our OpenGL 3.0 context current
}
else {
m_hRC = tempOpenGLContext; // If we didn't have support for OpenGL 3.x and up, use the OpenGL 2.1 context
}
int glVersion[2] = {-1, -1}; // Set some default values for the version
glGetIntegerv(GL_MAJOR_VERSION, &glVersion[0]); // Get back the OpenGL MAJOR version we are using
glGetIntegerv(GL_MINOR_VERSION, &glVersion[1]); // Get back the OpenGL MAJOR version we are using
Debug::Print((boost::wformat(TEXT("Using OpenGL: %1%.%2%")) % glVersion[0] % glVersion[1])); // Output which version of OpenGL we are using
// setup debug context
if (context_flags & WGL_CONTEXT_DEBUG_BIT_ARB)
{
if (glDebugMessageCallback)
{
auto func = &CGLDevice::GLDebugCallback;
glDebugMessageCallback(func, nullptr);
}
}
// get window info
glm::vec2 vp_size = BackBufferSize();
glViewport(0,0,(int32_t)vp_size.x, (int32_t)vp_size.y);
// setup v-sync
// http://www.3dbuzz.com/forum/threads/188320-Enable-or-Disable-VSync-in-OpenGL
if(wglSwapIntervalEXT)
{
if(initData.bWaitForVSync)
{
wglSwapIntervalEXT(1);
}
else
{
wglSwapIntervalEXT(0);
}
}
return true;
}
