#Sample opengl program in c on macos code#

#include // Header File For The GLut Library #include // Header File For The GLu32 Library Here's what I have thus far: #include // Header File For The OpenGе…ѓ2 Library I'll be eventually wrapping this in scheme, but I'd like to have a firmer understanding at the c-level beforehand.

I want to stick to just opengl and glut, etc.

#Sample opengl program in c on macos code#

It also includes input handling code etc.What's the bare skeleton to get a triangle drawn on an OpenGL window in C on OSX? I've gone through the tutorials at Nehe and tried to get it working, but the CreateGLWindow seems hopelessly tied to win32. It's well maintained and funded by Valve etc. SDL makes all this huge amount code to shorten into several lines and additionally the same code works on Windows, Linux, macOS and other OSs. OutputDebugStringA( 'Failed to activate forward compatible context! ' ) If (!wglMakeCurrent( WindowGlobal::hdc, (HGLRC)context )) HANDLE context = wglCreateContextAttribsARB( WindowGlobal::hdc, 0, contextAttribs ) WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB | otherBits, OutputDebugStringA( 'Failed to set pixel format! ' ) If (!SetPixelFormat( WindowGlobal::hdc, pixelFormat, &pfd )) PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress( 'wglCreateContextAttribsARB' ) Pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_COMPOSITION Д¬hooseAntiAliasingPixelFormat( pixelFormat, samples ) PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress( 'wglChoosePixelFormatARB' ) Д«OOL status = wglChoosePixelFormatARB( Dummy::hdc, attributes, 0, 1, &returnedPixelFormat, &numFormats ) WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, GL_TRUE, WGL_SAMPLE_BUFFERS_ARB, samples > 0 ? 1 : 0,

WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB, Void ChooseAntiAliasingPixelFormat( int& outPixelFormat, int samples ) UnregisterClass( Dummy::wcl.lpszClassName, Dummy::wcl.hInstance ) PostMessage( Dummy::hwnd, WM_CLOSE, 0, 0 ) OutputDebugStringA( 'Failed to make current dummy OpenGL context! ' ) If (!wglMakeCurrent( Dummy::hdc, Dummy::hrc )) OutputDebugStringA( 'Failed to set dummy window pixel format! ' ) Дummy::hrc = wglCreateContext( Dummy::hdc ) If (!SetPixelFormat( Dummy::hdc, pf, &pfd )) Int pf = ChoosePixelFormat( Dummy::hdc, &pfd ) Pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL OutputDebugStringA( 'Failed to register dummy window class! ' ) Дummy::hwnd = CreateWindow( Dummy::wcl.lpszClassName, '', WS_OVERLAPPEDWINDOW, 0, 0, 0, 0, 0, 0, Dummy::wcl.hInstance, 0 ) Return DefWindowProc( hWnd, msg, wParam, lParam ) Дummy::wcl.cbSize = sizeof( Dummy::wcl ) Дummy::wcl.hInstance = reinterpret_cast(GetModuleHandle( nullptr )) Дummy::wcl.lpszClassName = 'DummyGLWindowClass' LRESULT CALLBACK DummyGLWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )

Here's the rest of the code (error handling omitted for brevity): namespace Dummy PFNGLCULLFACEPROC glCullFace = GetProcAddress((HMODULE)libgl, 'glCullFace')

Query the function pointer: HMODULE libgl = LoadLibraryA('opengl32.dll') Including code for them all would be too big so here's one.

Create the actual GL context (in the below code inside CreateRenderer(), context version is 4.1).

Create a Win32 window normally (code not included, ask if you need it).