Here im setting up the old OpenGL context, that can only call gl-functions from version 1.1 ( I think?)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | void Win32_CreateOldOpenGLContext(WIN32_PLATFORM *win32)
{
// Set the pfd to what we would like to have. ( Suggested pfd )
PIXELFORMATDESCRIPTOR pfd = {};
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cDepthBits = 24;
pfd.cStencilBits = 8;
pfd.iLayerType = PFD_MAIN_PLANE;
// Windows chooses the pixel format that best fits our needs from the pfd
HDC our_dc = GetDC(win32->hwnd);
i32 pix_format = ChoosePixelFormat(our_dc, &pfd);
// Set the pixel format that windows decided was the best
SetPixelFormat(our_dc, pix_format, &pfd);
// Create the OpenGL context
win32->gl_rendering_context = wglCreateContext(our_dc);
// Make it the current active context
wglMakeCurrent(our_dc, win32->gl_rendering_context);
// When gl context is activated we can load funtion pointers
}
|
After that i try to load a function pointer to get glUseProgram:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
....
WIN32_PLATFORM win32 = Win32_WindowSetup(hInstance, cj_engine_OpenGL_windowName);
ShowWindow(win32.hwnd, nShowCmd);
Win32_CreateOldOpenGLContext(&win32);
typedef void WINAPI PFNGLUSEPROGRAMPROC (GLuint program);
PFNGLUSEPROGRAMPROC *glUseProgram;
glUseProgram = (PFNGLUSEPROGRAMPROC*)wglGetProcAddress("glUseProgram");
glUseProgram(0);
.....
|
Howevever if i call
1 | glUseProgram(); |
i get
1 | error C2198: 'PFNGLUSEPROGRAMPROC (__cdecl *)': too few arguments for call |
What i want is the error to say something more in style of this:
1 | error C2198: glUseProgram: too few arguments for call |
How could i achieve this?
I mean i want the actuall function name to be called in errors, not the "function pointer declaration type" if that makes sence.
thanks.