c++ - Direct2D: Convert ID2D1Image to ID2D1Bitmap -

i'm working on programm needs modify on screen. have id2d1bitmap created using prendertarget->copyfromrendertarget.

what i'm trying is, applying effects bitmap. effect returns id2d1image, need have id2d1bitmap.

is there way this?

edit1:

id2d1bitmap* mybitmap //the bitmap want apply effect id2d1effect* effect = null; pdevicecontext->createeffect(clsid_d2d1saturation, &effect); effect->setvalue(d2d1_saturation_prop_saturation, 0.0f); effect->setinput(0, mybitmap);  id2d1image* pimg = null; effect->getoutput(&pimg); 

if cast image, getpixelsize() raises access violation.

i solved it. it's dirty, works.

id2d1bitmap* convertimagetobitmap(id2d1image* pimg, d2d1_size_u size) {     id2d1image* oldtarget = null;     id2d1bitmap1* targetbitmap = null;      //create bitmap "d2d1_bitmap_options_target"     d2d1_bitmap_properties1 bitmapproperties =         d2d1::bitmapproperties1(         d2d1_bitmap_options_target,         d2d1::pixelformat(dxgi_format_b8g8r8a8_unorm, d2d1_alpha_mode_premultiplied)     );     pdevicecontext->createbitmap(size, 0, 0, bitmapproperties, &targetbitmap);      //save current target, replace id2d1bitmap     pdevicecontext->gettarget(&oldtarget);     pdevicecontext->settarget(targetbitmap);     //draw image on target (if not drawing call begin/enddraw)     pdevicecontext->drawimage(pimg);      //set previous target     pdevicecontext->settarget(oldtarget);      oldtarget->release();      return targetbitmap; }