BltFast zeigt nichts an

Paulaner

Dieser Code soll ein kleines Bild anzeigen. Tut es aber nicht. Womit wir schon beim Problem wären. Mit Blt() klappt das wunderbar, aber mit BltFast will er mir nichts anzeigen:

class IMAGE {
private:
	int w, h;
	bool transparent, loaded;
	LPDIRECTDRAWSURFACE7	lppdsImage;
	RECT					rectImage;
public:
	IMAGE() : w(0), h(0), transparent(false), loaded(false), lppdsImage(NULL) {}
	~IMAGE();
	bool init(LPCSTR file, int width, int height);

	void draw(int x, int y);
	void draw(int x, int y, int xstart, int xend, int ystart, int yend);
	void SetTransparent(DWORD high, DWORD low);
};

bool IMAGE::init(LPCSTR source, int width, int height) {
	this->w = width;
	this->h = height;
	this->transparent = false;
	this->lppdsImage = DDLoadBitmap(lpDirectDraw, source, width, height);
	if(this->lppdsImage == NULL) {
		loaded = false;
		return false;
	}
	loaded = true;
	return true;
}

void IMAGE::SetTransparent(DWORD high, DWORD low) {
	this->transparent = true;
	AddColorKey(this->lppdsImage, high, low);
}

void IMAGE::draw(int x, int y) {
	SetRect(&(this->rectImage), x, y, x+this->w, y+this->h);
	if(transparent)
		lpddsBack->Blt(&rectImage, this->lppdsImage, NULL, DDBLT_WAIT | DDBLT_KEYSRC, NULL);
	else
		lpddsBack->Blt(&rectImage, this->lppdsImage, NULL, DDBLT_WAIT, NULL);
}

void IMAGE::draw(int x, int y, int xstart, int xend, int ystart, int yend) {
	RECT	srcrect;
	SetRect(&srcrect, xstart, ystart, xend, yend);
	if(transparent)
		lpddsBack->BltFast((int)x, (int)y, lppdsImage, &srcrect, DDBLTFAST_WAIT | DDBLTFAST_SRCCOLORKEY);
	else
		lpddsBack->BltFast((int)x, (int)y, this->lppdsImage, &srcrect, DDBLTFAST_WAIT);
}

//////////////////////////////////////////////////////////////////////////////////////////////////////

Bilder[0].draw((int)y, (int)x);  // klappt
Bilder[0].draw((int)x, (int)y, 0, 100, 0, 100); // klappt nicht

Hi,

wie groß ist denn deine Quell-Surface?

Paulaner

200 mal 150 Pixel

Ok,

und ist sie im Videospeicher erstellt oder im Systemmem?

Paulaner

Ich glaube, dass ist gar nicht festgelegt. Ich lade das Bild ja mit DDLoadBitmap() :

DDLoadBitmap( IDirectDraw7* pdd, LPCSTR szBitmap, int dx, int dy)
{
    HBITMAP                 hbm;
    BITMAP                  bm;
    DDSURFACEDESC2          ddsd;
    IDirectDrawSurface7    *pdds;

    //
    //  Try to load the bitmap as a resource, if that fails, try it as a file
    //
    hbm = (HBITMAP) LoadImage(GetModuleHandle(NULL), szBitmap, IMAGE_BITMAP, dx,
                              dy, LR_CREATEDIBSECTION);
    if (hbm == NULL)
        hbm = (HBITMAP) LoadImage(NULL, szBitmap, IMAGE_BITMAP, dx, dy,
                                  LR_LOADFROMFILE | LR_CREATEDIBSECTION);
    if (hbm == NULL)
        return NULL;
    //
    // Get size of the bitmap
    //
    GetObject(hbm, sizeof(bm), &bm);
    //
    // Create a DirectDrawSurface for this bitmap
    //
    ZeroMemory(&ddsd, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
    ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
    ddsd.dwWidth = bm.bmWidth;
    ddsd.dwHeight = bm.bmHeight;
    if (pdd->CreateSurface(&ddsd, &pdds, NULL) != DD_OK)
        return NULL;
    DDCopyBitmap(pdds, hbm, 0, 0, 0, 0);
    DeleteObject(hbm);
    return pdds;
}

Das solltest du aber festlegen.

This method works only on display memory surfaces and cannot clip when blitting. If you use this method on a surface with an attached clipper, the call fails, and the method returns DDERR_UNSUPPORTED.

Paulaner

An welcher Stelle muss ich das denn machen?

TGGC

autocogito! Und die DX Debug Runtimes sind sicher auch nicht verkehrt.

Bye, TGGC (Pipe my World.)