GLboolean glewCreateContext (struct createParams* params)
{
WNDCLASS wc;
PIXELFORMATDESCRIPTOR pfd;
/* register window class */
ZeroMemory(&wc, sizeof(WNDCLASS));
wc.hInstance = GetModuleHandle(NULL);
wc.lpfnWndProc = DefWindowProc;
wc.lpszClassName = "GLEW";
if (0 == RegisterClass(&wc)) return GL_TRUE;
/* create window */
wnd = CreateWindow("GLEW", "GLEW", 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, NULL, NULL, GetModuleHandle(NULL), NULL);
if (NULL == wnd) return GL_TRUE;
/* get the device context */
dc = GetDC(wnd);
if (NULL == dc) return GL_TRUE;
/* find pixel format */
ZeroMemory(&pfd, sizeof(PIXELFORMATDESCRIPTOR));
if (params->pixelformat == -1) /* find default */
{
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
params->pixelformat = ChoosePixelFormat(dc, &pfd);
if (params->pixelformat == 0) return GL_TRUE;
}
/* set the pixel format for the dc */
if (FALSE == SetPixelFormat(dc, params->pixelformat, &pfd)) return GL_TRUE;
/* create rendering context */
rc = wglCreateContext(dc);
if (NULL == rc) return GL_TRUE;
if (FALSE == wglMakeCurrent(dc, rc)) return GL_TRUE;
if (params->major || params->profile || params->flags)
{
HGLRC oldRC = rc;
int contextAttrs[20];
int i;
wglewInit();
/* Intel HD 3000 has WGL_ARB_create_context, but not WGL_ARB_create_context_profile */
if (!wglewGetExtension("WGL_ARB_create_context"))
return GL_TRUE;
i = 0;
if (params->major)
{
contextAttrs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
contextAttrs[i++] = params->major;
contextAttrs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
contextAttrs[i++] = params->minor;
}
if (params->profile)
{
contextAttrs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
contextAttrs[i++] = params->profile;
}
if (params->flags)
{
contextAttrs[i++] = WGL_CONTEXT_FLAGS_ARB;
contextAttrs[i++] = params->flags;
}
contextAttrs[i++] = 0;
rc = wglCreateContextAttribsARB(dc, 0, contextAttrs);
if (NULL == rc) return GL_TRUE;
if (!wglMakeCurrent(dc, rc)) return GL_TRUE;
wglDeleteContext(oldRC);
}
return GL_FALSE;
}
QTestWindow() {
setSurfaceType(QSurface::OpenGLSurface);
QSurfaceFormat format;
// Qt Quick may need a depth and stencil buffer. Always make sure these are available.
format.setDepthBufferSize(16);
format.setStencilBufferSize(8);
format.setVersion(4, 5);
format.setProfile(QSurfaceFormat::OpenGLContextProfile::CompatibilityProfile);
format.setOption(QSurfaceFormat::DebugContext);
setFormat(format);
_context = new QOpenGLContext;
_context->setFormat(format);
_context->create();
show();
makeCurrent();
{
QOpenGLDebugLogger* logger = new QOpenGLDebugLogger(this);
logger->initialize(); // initializes in the current context, i.e. ctx
logger->enableMessages();
connect(logger, &QOpenGLDebugLogger::messageLogged, this, [&](const QOpenGLDebugMessage & debugMessage) {
qDebug() << debugMessage;
});
// logger->startLogging(QOpenGLDebugLogger::SynchronousLogging);
}
qDebug() << (const char*)glGetString(GL_VERSION);
#ifdef WIN32
glewExperimental = true;
GLenum err = glewInit();
if (GLEW_OK != err) {
/* Problem: glewInit failed, something is seriously wrong. */
const GLubyte * errStr = glewGetErrorString(err);
qDebug("Error: %s\n", errStr);
}
qDebug("Status: Using GLEW %s\n", glewGetString(GLEW_VERSION));
if (wglewGetExtension("WGL_EXT_swap_control")) {
int swapInterval = wglGetSwapIntervalEXT();
qDebug("V-Sync is %s\n", (swapInterval > 0 ? "ON" : "OFF"));
}
glGetError();
#endif
_textRenderer[0] = TextRenderer::getInstance(SANS_FONT_FAMILY, 12, false);
_textRenderer[1] = TextRenderer::getInstance(SERIF_FONT_FAMILY, 12, false,
TextRenderer::SHADOW_EFFECT);
_textRenderer[2] = TextRenderer::getInstance(MONO_FONT_FAMILY, 48, -1,
false, TextRenderer::OUTLINE_EFFECT);
_textRenderer[3] = TextRenderer::getInstance(INCONSOLATA_FONT_FAMILY, 24);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.2f, 0.2f, 0.2f, 1);
glDisable(GL_DEPTH_TEST);
makeCurrent();
setFramePosition(QPoint(-1000, 0));
resize(QSize(800, 600));
}
