wxGWindow::wxGWindow(
const GWindowSettings& _settings,
wxWindow* parent,
wxWindowID id) : invisible(wxCURSOR_BLANK), arrow(wxCURSOR_ARROW) {
// For now a crude check to initialize once per process.
if (sdlKeyMap.size() == 0) {
initWXKeys();
}
Array<int> attribList;
makeAttribList(_settings, attribList);
settings = _settings;
wxPoint pos(_settings.x, _settings.y);
wxSize size(_settings.width, _settings.height);
clientX = _settings.x;
clientY = _settings.y;
relativeX = 0;
relativeY = 0;
window = new wxG3DCanvas( this,
parent, id, pos, size, 0,
"WxWindow", attribList.getCArray(),
wxNullPalette);
glGetIntegerv(GL_DEPTH_BITS, &settings.depthBits);
glGetIntegerv(GL_STENCIL_BITS, &settings.stencilBits);
int redBits, greenBits, blueBits;
glGetIntegerv(GL_RED_BITS, &redBits);
glGetIntegerv(GL_GREEN_BITS, &greenBits);
glGetIntegerv(GL_BLUE_BITS, &blueBits);
settings.rgbBits = iMin(redBits, iMin(greenBits, blueBits));
glGetIntegerv(GL_ALPHA_BITS, &settings.alphaBits);
if (window->IsTopLevel()) {
window->SetClientSize(_settings.width, _settings.height);
}
if (settings.center) {
window->Center();
}
if (! settings.visible) {
window->Hide();
}
window->GetPosition(&settings.x, &settings.y);
window->GetClientSize(&settings.width, &settings.height);
}
int GHOST_ContextWGL::_choose_pixel_format_arb_2(
bool stereoVisual,
int numOfAASamples,
bool needAlpha,
bool needStencil,
bool sRGB,
int swapMethod)
{
std::vector<int> iAttributes;
int iPixelFormat = 0;
int samples;
// guard against some insanely high number of samples
if (numOfAASamples > 64) {
fprintf(stderr, "Warning! Clamping number of samples to 64.\n");
samples = 64;
}
else {
samples = numOfAASamples;
}
// request a format with as many samples as possible, but not more than requested
while (samples >= 0) {
makeAttribList(
iAttributes,
stereoVisual,
samples,
swapMethod,
needAlpha,
needStencil,
sRGB);
UINT nNumFormats;
WIN32_CHK(wglChoosePixelFormatARB(m_hDC, &(iAttributes[0]), NULL, 1, &iPixelFormat, &nNumFormats));
/* total number of formats that match (regardless of size of iPixelFormat array)
* see: WGL_ARB_pixel_format extension spec */
if (nNumFormats > 0)
break;
/* if not reset, then the state of iPixelFormat is undefined after call to wglChoosePixelFormatARB
* see: WGL_ARB_pixel_format extension spec */
iPixelFormat = 0;
samples--;
}
// check how many samples were actually gotten
if (iPixelFormat != 0) {
int iQuery[] = { WGL_SAMPLES_ARB };
int actualSamples;
wglGetPixelFormatAttribivARB(m_hDC, iPixelFormat, 0, 1, iQuery, &actualSamples);
if (actualSamples != numOfAASamples) {
fprintf(stderr,
"Warning! Unable to find a multisample pixel format that supports exactly %d samples. "
"Substituting one that uses %d samples.\n",
numOfAASamples, actualSamples);
m_numOfAASamples = actualSamples; // set context property to actual value
}
}
return iPixelFormat;
}
