bool OpenGLApp::initCaps(){
PIXELFORMATDESCRIPTOR pfd = {
sizeof (PIXELFORMATDESCRIPTOR), 1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA, colorBits,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
depthBits, stencilBits,
0, PFD_MAIN_PLANE, 0, 0, 0, 0
};
WNDCLASS wincl;
wincl.hInstance = hInstance;
wincl.lpszClassName = "PFrmt";
wincl.lpfnWndProc = PFWinProc;
wincl.style = 0;
wincl.hIcon = NULL;
wincl.hCursor = NULL;
wincl.lpszMenuName = NULL;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;
wincl.hbrBackground = NULL;
RegisterClass(&wincl);
HWND hPFwnd = CreateWindow("PFrmt", "PFormat", WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0, 0, 8, 8, HWND_DESKTOP, NULL, hInstance, NULL);
initEntryPoints(hPFwnd, pfd);
SendMessage(hPFwnd, WM_CLOSE, 0, 0);
return true;
}
bool OpenGLApp::initAPI(){
PixelFormat pf;
initPixelFormat(pf);
selectPixelFormat(pf);
int bpp = pf.alphaBits > 0? 32 : 24;
wa = (pf.accumBits > 0);
static PIXELFORMATDESCRIPTOR pfd = {
sizeof (PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
bpp,
0, 0, 0, 0, 0, 0, 0, 0,
pf.accumBits, pf.accumBits / 4, pf.accumBits / 4, pf.accumBits / 4, pf.accumBits / 4,
pf.depthBits,
pf.stencilBits,
pf.alphaBits,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
WNDCLASS wincl;
HINSTANCE hInst = (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE);
wincl.hInstance = hInst;
wincl.lpszClassName = "PFrmt";
wincl.lpfnWndProc = PFWinProc;
wincl.style = 0;
wincl.hIcon = NULL;
wincl.hCursor = NULL;
wincl.lpszMenuName = NULL;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;
wincl.hbrBackground = NULL;
RegisterClass(&wincl);
HWND hPFwnd = CreateWindow("PFrmt", "PFormat", WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0, 0, 8, 8, HWND_DESKTOP, NULL, hInst, NULL);
initEntryPoints(hPFwnd, pfd);
SendMessage(hPFwnd, WM_CLOSE, 0, 0);
hdc = GetDC(hwnd);
int pixelFormat;
float fAttribs[256];
int iAttribs[256] = {
WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
WGL_RED_BITS_ARB, pf.redBits,
WGL_GREEN_BITS_ARB, pf.greenBits,
WGL_BLUE_BITS_ARB, pf.blueBits,
WGL_ALPHA_BITS_ARB, pf.alphaBits,
WGL_DEPTH_BITS_ARB, pf.depthBits,
WGL_STENCIL_BITS_ARB, pf.stencilBits,
WGL_ACCUM_BITS_ARB, pf.accumBits,
};
while (true){
int *iAtt = iAttribs + 20;
float *fAtt = fAttribs;
if (WGL_ARB_multisample_supported && pf.fsaaLevel > 0){
*iAtt++ = WGL_SAMPLE_BUFFERS_ARB;
*iAtt++ = GL_TRUE;
*iAtt++ = WGL_SAMPLES_ARB;
*iAtt++ = pf.fsaaLevel;
}
*iAtt++ = 0;
*fAtt++ = 0;
unsigned int nMatchingPixelFormats;
if (!WGL_ARB_pixel_format_supported || !wglChoosePixelFormatARB(hdc, iAttribs, fAttribs, 1, &pixelFormat, &nMatchingPixelFormats) || nMatchingPixelFormats == 0){
if (pf.fsaaLevel > 0){
pf.fsaaLevel -= 2;
} else {
pixelFormat = ChoosePixelFormat(hdc, &pfd);
break;
}
} else break;
}
SetPixelFormat(hdc, pixelFormat, &pfd);
hglrc = wglCreateContext(hdc);
wglMakeCurrent(hdc, hglrc);
initExtensions(hdc);
if (WGL_ARB_multisample_supported && pf.fsaaLevel > 0){
glEnable(GL_MULTISAMPLE_ARB);
}
renderer = new OpenGLRenderer(hdc, hglrc);
return true;
}