/**
* Queue a composition.
*
* The stw_framebuffer object must have its mutex locked. The mutex will
* be unlocked here before returning.
*/
BOOL
stw_framebuffer_present_locked(HDC hdc,
struct stw_framebuffer *fb,
struct pipe_resource *res)
{
if (stw_dev->callbacks.wglCbPresentBuffers &&
stw_dev->stw_winsys->compose) {
GLCBPRESENTBUFFERSDATA data;
memset(&data, 0, sizeof data);
data.magic1 = 2;
data.magic2 = 0;
data.AdapterLuid = stw_dev->AdapterLuid;
data.rect = fb->client_rect;
data.pPrivateData = (void *)res;
stw_notify_current_locked(fb);
stw_framebuffer_unlock(fb);
return stw_dev->callbacks.wglCbPresentBuffers(hdc, &data);
}
else {
struct pipe_screen *screen = stw_dev->screen;
stw_dev->stw_winsys->present( screen, res, hdc );
stw_framebuffer_update(fb);
stw_notify_current_locked(fb);
stw_framebuffer_unlock(fb);
return TRUE;
}
}
BOOL APIENTRY
DrvSetPixelFormat(HDC hdc, LONG iPixelFormat)
{
uint count;
uint index;
struct stw_framebuffer *fb;
if (!stw_dev)
return FALSE;
index = (uint) iPixelFormat - 1;
count = stw_pixelformat_get_count();
if (index >= count)
return FALSE;
fb = stw_framebuffer_from_hdc_locked(hdc);
if (fb) {
/*
* SetPixelFormat must be called only once. However ignore
* pbuffers, for which the framebuffer object is created first.
*/
boolean bPbuffer = fb->bPbuffer;
stw_framebuffer_unlock( fb );
return bPbuffer;
}
fb = stw_framebuffer_create(hdc, iPixelFormat);
if (!fb) {
return FALSE;
}
stw_framebuffer_unlock( fb );
/* Some applications mistakenly use the undocumented wglSetPixelFormat
* function instead of SetPixelFormat, so we call SetPixelFormat here to
* avoid opengl32.dll's wglCreateContext to fail */
if (GetPixelFormat(hdc) == 0) {
BOOL bRet = SetPixelFormat(hdc, iPixelFormat, NULL);
if (!bRet) {
debug_printf("SetPixelFormat failed\n");
}
}
return TRUE;
}
BOOL APIENTRY
DrvPresentBuffers(HDC hdc, PGLPRESENTBUFFERSDATA data)
{
struct stw_framebuffer *fb;
struct pipe_screen *screen;
struct pipe_resource *res;
if (!stw_dev)
return FALSE;
fb = stw_framebuffer_from_hdc( hdc );
if (fb == NULL)
return FALSE;
screen = stw_dev->screen;
res = (struct pipe_resource *)data->pPrivateData;
if (data->hSharedSurface != fb->hSharedSurface) {
if (fb->shared_surface) {
stw_dev->stw_winsys->shared_surface_close(screen, fb->shared_surface);
fb->shared_surface = NULL;
}
fb->hSharedSurface = data->hSharedSurface;
if (data->hSharedSurface &&
stw_dev->stw_winsys->shared_surface_open) {
fb->shared_surface =
stw_dev->stw_winsys->shared_surface_open(screen,
fb->hSharedSurface);
}
}
if (!fb->minimized) {
if (fb->shared_surface) {
stw_dev->stw_winsys->compose(screen,
res,
fb->shared_surface,
&fb->client_rect,
data->PresentHistoryToken);
}
else {
stw_dev->stw_winsys->present( screen, res, hdc );
}
}
stw_framebuffer_update(fb);
stw_notify_current_locked(fb);
stw_framebuffer_unlock(fb);
return TRUE;
}
/**
* @sa http://msdn.microsoft.com/en-us/library/ms644975(VS.85).aspx
* @sa http://msdn.microsoft.com/en-us/library/ms644960(VS.85).aspx
*/
LRESULT CALLBACK
stw_call_window_proc(int nCode, WPARAM wParam, LPARAM lParam)
{
struct stw_tls_data *tls_data;
PCWPSTRUCT pParams = (PCWPSTRUCT)lParam;
struct stw_framebuffer *fb;
tls_data = stw_tls_get_data();
if (!tls_data)
return 0;
if (nCode < 0 || !stw_dev)
return CallNextHookEx(tls_data->hCallWndProcHook, nCode, wParam, lParam);
/* We check that the stw_dev object is initialized before we try to do
* anything with it. Otherwise, in multi-threaded programs there's a
* chance of executing this code before the stw_dev object is fully
* initialized.
*/
if (stw_dev && stw_dev->initialized) {
if (pParams->message == WM_WINDOWPOSCHANGED) {
/* We handle WM_WINDOWPOSCHANGED instead of WM_SIZE because according
* to http://blogs.msdn.com/oldnewthing/archive/2008/01/15/7113860.aspx
* WM_SIZE is generated from WM_WINDOWPOSCHANGED by DefWindowProc so it
* can be masked out by the application.
*/
LPWINDOWPOS lpWindowPos = (LPWINDOWPOS)pParams->lParam;
if ((lpWindowPos->flags & SWP_SHOWWINDOW) ||
!(lpWindowPos->flags & SWP_NOMOVE) ||
!(lpWindowPos->flags & SWP_NOSIZE)) {
fb = stw_framebuffer_from_hwnd( pParams->hwnd );
if (fb) {
/* Size in WINDOWPOS includes the window frame, so get the size
* of the client area via GetClientRect.
*/
stw_framebuffer_get_size(fb);
stw_framebuffer_unlock(fb);
}
}
}
else if (pParams->message == WM_DESTROY) {
stw_lock_framebuffers(stw_dev);
fb = stw_framebuffer_from_hwnd_locked( pParams->hwnd );
if (fb)
stw_framebuffer_release_locked(fb);
stw_unlock_framebuffers(stw_dev);
}
}
return CallNextHookEx(tls_data->hCallWndProcHook, nCode, wParam, lParam);
}
int
stw_pixelformat_get(HDC hdc)
{
int iPixelFormat = 0;
struct stw_framebuffer *fb;
fb = stw_framebuffer_from_hdc(hdc);
if (fb) {
iPixelFormat = fb->iPixelFormat;
stw_framebuffer_unlock(fb);
}
return iPixelFormat;
}
/**
* Decrement the reference count on the given stw_framebuffer object.
* If the reference count hits zero, destroy the object.
*
* Note: Both stw_dev::fb_mutex and stw_framebuffer::mutex must already be
* locked. After this function completes, the fb's mutex will be unlocked.
*/
void
stw_framebuffer_release_locked(struct stw_framebuffer *fb)
{
struct stw_framebuffer **link;
assert(fb);
assert(stw_own_mutex(&fb->mutex));
assert(stw_own_mutex(&stw_dev->fb_mutex));
/* check the reference count */
fb->refcnt--;
if (fb->refcnt) {
stw_framebuffer_unlock(fb);
return;
}
/* remove this stw_framebuffer from the device's linked list */
link = &stw_dev->fb_head;
while (*link != fb)
link = &(*link)->next;
assert(*link);
*link = fb->next;
fb->next = NULL;
if (fb->shared_surface)
stw_dev->stw_winsys->shared_surface_close(stw_dev->screen,
fb->shared_surface);
stw_st_destroy_framebuffer_locked(fb->stfb);
stw_framebuffer_unlock(fb);
DeleteCriticalSection(&fb->mutex);
FREE( fb );
}
BOOL APIENTRY
DrvSwapBuffers(HDC hdc)
{
struct stw_context *ctx;
struct stw_framebuffer *fb;
if (!stw_dev)
return FALSE;
fb = stw_framebuffer_from_hdc( hdc );
if (fb == NULL)
return FALSE;
if (!(fb->pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) {
stw_framebuffer_unlock(fb);
return TRUE;
}
ctx = stw_current_context();
if (ctx) {
if (ctx->hud) {
/* Display the HUD */
struct pipe_resource *back =
stw_get_framebuffer_resource(fb->stfb, ST_ATTACHMENT_BACK_LEFT);
if (back) {
hud_draw(ctx->hud, back);
}
}
if (ctx->current_framebuffer == fb) {
/* flush current context */
ctx->st->flush(ctx->st, ST_FLUSH_END_OF_FRAME, NULL);
}
}
if (stw_dev->swap_interval != 0) {
wait_swap_interval(fb);
}
return stw_st_swap_framebuffer_locked(hdc, fb->stfb);
}
