/************************************************************************************************
* Small footprint OpenGL init code made by Rasmus Christian Kaae (kaae@daimi.au.dk) *
* Made in January 2002 - Please credit me if you use this! *
* *
* Usage: *
* Make a main.c file containing two functions : *
* *
* void InitIntro() *
* { /* todo: init stuff */ } *
* void RunIntro() *
* { *
* glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); *
* /* todo: display something nice */ *
* } *
* *
* Compile your DEBUG project as normal and set your RELEASE version to no-defaultlibs. *
* This OpenGL init code will leave a small footprint of about 1.5kb uncompressed code. *
* Tested with MS Visual Studio 6.0. *
************************************************************************************************/
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
/************************************************************************************************/
// out-comment this to get windowed rendering
#define FULLSCREEN
/************************************************************************************************/
// implement these in your main.c file
extern void InitIntro();
extern void RunIntro();
/************************************************************************************************/
#ifdef _DEBUG
int WINAPI WinMain(HINSTANCE i, HINSTANCE p, LPSTR cmd, int n)
#else
int WinMainCRTStartup()
#endif
{
PIXELFORMATDESCRIPTOR pfd;
HWND hwnd;
HDC hdc;
int pixelFormat;
#ifdef FULLSCREEN
DEVMODE dmScreenSettings; // Device Mode
#endif
#ifndef _DEBUG
HINSTANCE i = GetModuleHandle(NULL);
#endif
/* init the pixelformat descriptor */
RtlZeroMemory(&pfd,sizeof(PIXELFORMATDESCRIPTOR)); // Clear the struct
pfd.nSize=sizeof(PIXELFORMATDESCRIPTOR); // Size
pfd.nVersion=1; // Version
pfd.dwFlags=PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER; // Selected flags
pfd.iPixelType=PFD_TYPE_RGBA; // Pixelformat
pfd.cColorBits=32; // Pixel depth
pfd.cDepthBits=16; // Zbuffer depth
pfd.iLayerType=PFD_MAIN_PLANE; // Place the pixelformat on the main plane
#ifdef FULLSCREEN
/* init the resolution change settings */
RtlZeroMemory(&dmScreenSettings,sizeof(dmScreenSettings)); // Clear the struct
dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure
dmScreenSettings.dmPelsWidth = 640; // Selected Screen Width
dmScreenSettings.dmPelsHeight = 480; // Selected Screen Height
dmScreenSettings.dmBitsPerPel = 32; // Selected Bits Per Pixel
dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT; // Notify which fields we have used
if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL) return 0;
#endif
/* setup the window handle */
hwnd=CreateWindowEx(WS_EX_TOOLWINDOW, "STATIC", "blipblop", WS_POPUP|WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE|WS_CLIPSIBLINGS|WS_CLIPCHILDREN, 0, 0, 640, 480, 0, 0, i, 0);
/* select the pixel format for the current window */
hdc = GetDC(hwnd);
pixelFormat = ChoosePixelFormat(hdc, &pfd);
SetPixelFormat(hdc, pixelFormat, &pfd);
wglMakeCurrent( hdc, wglCreateContex(hdc) );
/* cursor be gone */
SetCursor(0);
/* init the actual intro */
InitIntro();
/* loop until escape is pressed all normal windows messages are ignored */
while (!GetAsyncKeyState(VK_ESCAPE))
{
RunIntro(); // nifty effects here
SwapBuffers(hdc); // display the cool stuff
}
return 0; // exit to OS
}
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