diff options
Diffstat (limited to 'demos/natives/bc5/cube.c')
| -rw-r--r-- | demos/natives/bc5/cube.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/demos/natives/bc5/cube.c b/demos/natives/bc5/cube.c new file mode 100644 index 0000000..34c2f47 --- /dev/null +++ b/demos/natives/bc5/cube.c @@ -0,0 +1,289 @@ +#include <windows.h>
+#include <GL/gl.h>
+
+char *className = "OpenGL";
+char *windowName = "OpenGL Cube";
+int winX = 0, winY = 0;
+int winWidth = 300, winHeight = 300;
+
+HDC hDC;
+HGLRC hGLRC;
+HPALETTE hPalette;
+
+void
+init(void)
+{
+ /* set viewing projection */
+ glMatrixMode(GL_PROJECTION);
+ glFrustum(-0.5F, 0.5F, -0.5F, 0.5F, 1.0F, 3.0F);
+
+ /* position viewer */
+ glMatrixMode(GL_MODELVIEW);
+ glTranslatef(0.0F, 0.0F, -2.0F);
+
+ /* position object */
+ glRotatef(30.0F, 1.0F, 0.0F, 0.0F);
+ glRotatef(30.0F, 0.0F, 1.0F, 0.0F);
+
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+}
+
+void
+redraw(void)
+{
+ /* clear color and depth buffers */
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ /* draw six faces of a cube */
+ glBegin(GL_QUADS);
+ glNormal3f( 0.0F, 0.0F, 1.0F);
+ glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f(-0.5F, 0.5F, 0.5F);
+ glVertex3f(-0.5F,-0.5F, 0.5F); glVertex3f( 0.5F,-0.5F, 0.5F);
+
+ glNormal3f( 0.0F, 0.0F,-1.0F);
+ glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f(-0.5F, 0.5F,-0.5F);
+ glVertex3f( 0.5F, 0.5F,-0.5F); glVertex3f( 0.5F,-0.5F,-0.5F);
+
+ glNormal3f( 0.0F, 1.0F, 0.0F);
+ glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f( 0.5F, 0.5F,-0.5F);
+ glVertex3f(-0.5F, 0.5F,-0.5F); glVertex3f(-0.5F, 0.5F, 0.5F);
+
+ glNormal3f( 0.0F,-1.0F, 0.0F);
+ glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f( 0.5F,-0.5F,-0.5F);
+ glVertex3f( 0.5F,-0.5F, 0.5F); glVertex3f(-0.5F,-0.5F, 0.5F);
+
+ glNormal3f( 1.0F, 0.0F, 0.0F);
+ glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f( 0.5F,-0.5F, 0.5F);
+ glVertex3f( 0.5F,-0.5F,-0.5F); glVertex3f( 0.5F, 0.5F,-0.5F);
+
+ glNormal3f(-1.0F, 0.0F, 0.0F);
+ glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f(-0.5F,-0.5F, 0.5F);
+ glVertex3f(-0.5F, 0.5F, 0.5F); glVertex3f(-0.5F, 0.5F,-0.5F);
+ glEnd();
+
+ SwapBuffers(hDC);
+}
+
+void
+resize(void)
+{
+ /* set viewport to cover the window */
+ glViewport(0, 0, winWidth, winHeight);
+}
+
+void
+setupPixelFormat(HDC hDC)
+{
+ PIXELFORMATDESCRIPTOR pfd = {
+ sizeof(PIXELFORMATDESCRIPTOR), /* size */
+ 1, /* version */
+ PFD_SUPPORT_OPENGL |
+ PFD_DRAW_TO_WINDOW |
+ PFD_DOUBLEBUFFER, /* support double-buffering */
+ PFD_TYPE_RGBA, /* color type */
+ 16, /* prefered color depth */
+ 0, 0, 0, 0, 0, 0, /* color bits (ignored) */
+ 0, /* no alpha buffer */
+ 0, /* alpha bits (ignored) */
+ 0, /* no accumulation buffer */
+ 0, 0, 0, 0, /* accum bits (ignored) */
+ 16, /* depth buffer */
+ 0, /* no stencil buffer */
+ 0, /* no auxiliary buffers */
+ PFD_MAIN_PLANE, /* main layer */
+ 0, /* reserved */
+ 0, 0, 0, /* no layer, visible, damage masks */
+ };
+ int pixelFormat;
+
+ pixelFormat = ChoosePixelFormat(hDC, &pfd);
+ if (pixelFormat == 0) {
+ MessageBox(WindowFromDC(hDC), "ChoosePixelFormat failed.", "Error",
+ MB_ICONERROR | MB_OK);
+ exit(1);
+ }
+
+ if (SetPixelFormat(hDC, pixelFormat, &pfd) != TRUE) {
+ MessageBox(WindowFromDC(hDC), "SetPixelFormat failed.", "Error",
+ MB_ICONERROR | MB_OK);
+ exit(1);
+ }
+}
+
+void
+setupPalette(HDC hDC)
+{
+ int pixelFormat = GetPixelFormat(hDC);
+ PIXELFORMATDESCRIPTOR pfd;
+ LOGPALETTE* pPal;
+ int paletteSize;
+
+ DescribePixelFormat(hDC, pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+
+ if (pfd.dwFlags & PFD_NEED_PALETTE) {
+ paletteSize = 1 << pfd.cColorBits;
+ } else {
+ return;
+ }
+
+ pPal = (LOGPALETTE*)
+ malloc(sizeof(LOGPALETTE) + paletteSize * sizeof(PALETTEENTRY));
+ pPal->palVersion = 0x300;
+ pPal->palNumEntries = paletteSize;
+
+ /* build a simple RGB color palette */
+ {
+ int redMask = (1 << pfd.cRedBits) - 1;
+ int greenMask = (1 << pfd.cGreenBits) - 1;
+ int blueMask = (1 << pfd.cBlueBits) - 1;
+ int i;
+
+ for (i=0; i<paletteSize; ++i) {
+ pPal->palPalEntry[i].peRed =
+ (((i >> pfd.cRedShift) & redMask) * 255) / redMask;
+ pPal->palPalEntry[i].peGreen =
+ (((i >> pfd.cGreenShift) & greenMask) * 255) / greenMask;
+ pPal->palPalEntry[i].peBlue =
+ (((i >> pfd.cBlueShift) & blueMask) * 255) / blueMask;
+ pPal->palPalEntry[i].peFlags = 0;
+ }
+ }
+
+ hPalette = CreatePalette(pPal);
+ free(pPal);
+
+ if (hPalette) {
+ SelectPalette(hDC, hPalette, FALSE);
+ RealizePalette(hDC);
+ }
+}
+
+LRESULT APIENTRY
+WndProc(
+ HWND hWnd,
+ UINT message,
+ WPARAM wParam,
+ LPARAM lParam)
+{
+ switch (message) {
+ case WM_CREATE:
+ /* initialize OpenGL rendering */
+ hDC = GetDC(hWnd);
+ setupPixelFormat(hDC);
+ setupPalette(hDC);
+ hGLRC = wglCreateContext(hDC);
+ wglMakeCurrent(hDC, hGLRC);
+ init();
+ return 0;
+ case WM_DESTROY:
+ /* finish OpenGL rendering */
+ if (hGLRC) {
+ wglMakeCurrent(NULL, NULL);
+ wglDeleteContext(hGLRC);
+ }
+ if (hPalette) {
+ DeleteObject(hPalette);
+ }
+ ReleaseDC(hWnd, hDC);
+ PostQuitMessage(0);
+ return 0;
+ case WM_SIZE:
+ /* track window size changes */
+ if (hGLRC) {
+ winWidth = (int) LOWORD(lParam);
+ winHeight = (int) HIWORD(lParam);
+ resize();
+ return 0;
+ }
+ case WM_PALETTECHANGED:
+ /* realize palette if this is *not* the current window */
+ if (hGLRC && hPalette && (HWND) wParam != hWnd) {
+ UnrealizeObject(hPalette);
+ SelectPalette(hDC, hPalette, FALSE);
+ RealizePalette(hDC);
+ redraw();
+ break;
+ }
+ break;
+ case WM_QUERYNEWPALETTE:
+ /* realize palette if this is the current window */
+ if (hGLRC && hPalette) {
+ UnrealizeObject(hPalette);
+ SelectPalette(hDC, hPalette, FALSE);
+ RealizePalette(hDC);
+ redraw();
+ return TRUE;
+ }
+ break;
+ case WM_PAINT:
+ {
+ PAINTSTRUCT ps;
+ BeginPaint(hWnd, &ps);
+ if (hGLRC) {
+ redraw();
+ }
+ EndPaint(hWnd, &ps);
+ return 0;
+ }
+ break;
+ case WM_CHAR:
+ /* handle keyboard input */
+ switch ((int)wParam) {
+ case VK_ESCAPE:
+ DestroyWindow(hWnd);
+ return 0;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ return DefWindowProc(hWnd, message, wParam, lParam);
+}
+
+int APIENTRY
+WinMain(
+ HINSTANCE hCurrentInst,
+ HINSTANCE hPreviousInst,
+ LPSTR lpszCmdLine,
+ int nCmdShow)
+{
+ WNDCLASS wndClass;
+ HWND hWnd;
+ MSG msg;
+
+ /* register window class */
+ wndClass.style = CS_HREDRAW | CS_VREDRAW;
+ wndClass.lpfnWndProc = WndProc;
+ wndClass.cbClsExtra = 0;
+ wndClass.cbWndExtra = 0;
+ wndClass.hInstance = hCurrentInst;
+ wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
+ wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
+ wndClass.hbrBackground = GetStockObject(BLACK_BRUSH);
+ wndClass.lpszMenuName = NULL;
+ wndClass.lpszClassName = className;
+ RegisterClass(&wndClass);
+
+ /* create window */
+ hWnd = CreateWindow(
+ className, windowName,
+ WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
+ winX, winY, winWidth, winHeight,
+ NULL, NULL, hCurrentInst, NULL);
+
+ /* display window */
+ ShowWindow(hWnd, nCmdShow);
+ UpdateWindow(hWnd);
+
+ /* process messages */
+ while (GetMessage(&msg, NULL, 0, 0) == TRUE) {
+ TranslateMessage(&msg);
+ DispatchMessage(&msg);
+ }
+ return msg.wParam;
+}
+
\ No newline at end of file |