/**
* Create a new stw_framebuffer object which corresponds to the given
* HDC/window. If successful, we return the new stw_framebuffer object
* with its mutex locked.
*/
struct stw_framebuffer *
stw_framebuffer_create(HDC hdc, int iPixelFormat)
{
HWND hWnd;
struct stw_framebuffer *fb;
const struct stw_pixelformat_info *pfi;
/* We only support drawing to a window. */
hWnd = WindowFromDC( hdc );
if (!hWnd)
return NULL;
fb = CALLOC_STRUCT( stw_framebuffer );
if (fb == NULL)
return NULL;
fb->hWnd = hWnd;
fb->iPixelFormat = iPixelFormat;
/*
* We often need a displayable pixel format to make GDI happy. Set it
* here (always 1, i.e., out first pixel format) where appropriate.
*/
fb->iDisplayablePixelFormat = iPixelFormat <= stw_dev->pixelformat_count
? iPixelFormat : 1;
fb->pfi = pfi = stw_pixelformat_get_info( iPixelFormat );
fb->stfb = stw_st_create_framebuffer( fb );
if (!fb->stfb) {
FREE( fb );
return NULL;
}
fb->refcnt = 1;
/*
* Windows can be sometimes have zero width and or height, but we ensure
* a non-zero framebuffer size at all times.
*/
fb->must_resize = TRUE;
fb->width = 1;
fb->height = 1;
fb->client_rect.left = 0;
fb->client_rect.top = 0;
fb->client_rect.right = fb->client_rect.left + fb->width;
fb->client_rect.bottom = fb->client_rect.top + fb->height;
stw_framebuffer_get_size(fb);
InitializeCriticalSection(&fb->mutex);
/* This is the only case where we lock the stw_framebuffer::mutex before
* stw_dev::fb_mutex, since no other thread can know about this framebuffer
* and we must prevent any other thread from destroying it before we return.
*/
stw_framebuffer_lock(fb);
stw_lock_framebuffers(stw_dev);
fb->next = stw_dev->fb_head;
stw_dev->fb_head = fb;
stw_unlock_framebuffers(stw_dev);
return fb;
}
struct stw_framebuffer *
stw_framebuffer_create(
HDC hdc,
int iPixelFormat )
{
HWND hWnd;
struct stw_framebuffer *fb;
const struct stw_pixelformat_info *pfi;
/* We only support drawing to a window. */
hWnd = WindowFromDC( hdc );
if(!hWnd)
return NULL;
fb = CALLOC_STRUCT( stw_framebuffer );
if (fb == NULL)
return NULL;
/* Applications use, create, destroy device contexts, so the hdc passed is. We create our own DC
* because we need one for single buffered visuals.
*/
fb->hDC = GetDC(hWnd);
fb->hWnd = hWnd;
fb->iPixelFormat = iPixelFormat;
fb->pfi = pfi = stw_pixelformat_get_info( iPixelFormat - 1 );
fb->stfb = stw_st_create_framebuffer( fb );
if (!fb->stfb) {
FREE( fb );
return NULL;
}
fb->refcnt = 1;
/*
* Windows can be sometimes have zero width and or height, but we ensure
* a non-zero framebuffer size at all times.
*/
fb->must_resize = TRUE;
fb->width = 1;
fb->height = 1;
fb->client_rect.left = 0;
fb->client_rect.top = 0;
fb->client_rect.right = fb->client_rect.left + fb->width;
fb->client_rect.bottom = fb->client_rect.top + fb->height;
stw_framebuffer_get_size(fb);
pipe_mutex_init( fb->mutex );
/* This is the only case where we lock the stw_framebuffer::mutex before
* stw_dev::fb_mutex, since no other thread can know about this framebuffer
* and we must prevent any other thread from destroying it before we return.
*/
pipe_mutex_lock( fb->mutex );
pipe_mutex_lock( stw_dev->fb_mutex );
fb->next = stw_dev->fb_head;
stw_dev->fb_head = fb;
pipe_mutex_unlock( stw_dev->fb_mutex );
return fb;
}
