Hi there
we are coding a 3d action shooter for Linux/Windows/osX, and since we
ported to Windows via SDL we have a strange effect, when changing the
Screen size in windows:
On loading everything works well, most models are stored in glLists (at
the moment) and all Textures are stored in glTexture2D’s…
But, when the resolution gets changed, SDL sends a WindowResizeEvent,
that we catch, and handle with this code:
int GraphicsEngine::setResolution(int width, int height, int bpp)
{
this->resolutionX = width;
this->resolutionY = height;
this->bitsPerPixel = bpp;
if (this->screen != NULL)
SDL_FreeSurface(screen);
if((this->screen = SDL_SetVideoMode(this->resolutionX,
this->resolutionY, this->bitsPerPixel, this->videoFlags |
this->fullscreenFlag)) == NULL)
{
PRINTF(1)(“Could not SDL_SetVideoMode(%d, %d, %d, %d): %s\n”,
this->resolutionX, this->resolutionY, this->bitsPerPixel,
this->videoFlags, SDL_GetError());
// SDL_Quit();
// return -1;
}
glMatrixMode(GL_PROJECTION_MATRIX);
glLoadIdentity();
glViewport(0, 0, width, height); // Reset The
Current Viewport
}
Then all Textures get removed from rendered Objects, and glLists wont
render anymore, but the objects rendered through glVertex, are still
visible.
I suspect, that somehow an openGL context switch occurs, or gl gets
reinitialized…
here is a precompiled binary, and source.
http://www.orxonox.net/files/snapshots/orxonox-src-latest.tar.bz2
http://www.orxonox.net/files/snapshots/orxonox-win32-latest.zip
any help is appreciated
Benjamin
