direct2d

How to save ID2D1Bitmap to PNG file did not help me. I'm working with Direct2D. I want to save a ID2D1**Hwnd**RenderTarget *m_pRenderTarget to file as bmp or png etc. But the sample I found on MSDN use ID2D1RenderTarget . In my case I drawn my figure in m_pRenderTarget, I used the method ID2D1Bitmap::CopyFromRenderTarget (...) to get an ID2D1Bitmap. After that, to use the saving function bellow, I have to convert the ID2D1Bitmap I got to IWICBitmap . Because the function bellow doesn't use ID2D1Bitmap ... I did not found yet how to do this. thanks. if (SUCCEEDED(hr)) { // // Save image to file

I want to port my movie rendering software from DirectDraw to Direct2D. Because of compatibility issues, GDI rendering needs to be done on top of the image. To optimize performance I want to implement some kind of backbuffer mechanism, but there seems to be a problem with the alpha channel information, all GDI drawing appears somehow transparent . I create a ID2D1HwndRenderTarget for my window handle and and a ID2D1Bitmap to copy the images to. The pixelformat of the bitmap is DXGI_FORMAT_B8G8R8A8_UNORM , the alpha mode is D2D1_ALPHA_MODE_IGNORE . The HwdRenderTarget is GDI compatible, so my

Ideally I'd like to have multiple worker threads to be able to render to off-screen render targets and then 'transfer' the rendered content to the on-screen target. With hwnd render targets this does not seem to be a problem (msdn has an example of it). I'm not quite sure how to do it when the on-screen render target is based on DXGI swap chain. As far as I know, I can only have one swap chain per window. Therefore I can only have a single render target based on the swap chain. This implies that on-screen rendering can only be done through that single render target. If my above assumptions are

My new application will feature a rich interface which should be resizable on-the-fly uses transparent icons/images etc. For this application I'm trying to decide on using the new Direct2D API against the good old GDI. One of the downsides is of course it does not run on XP, although I've found a bit nastier issues to decide upon: I noticed that outputting text in a Direct2D environment seems a bit blurry (although marketed as a feature). Just look at the text in Firefox 4 with hardware acceleration enabled (or IE9). It seems to be due to the fact that in Direct2D text does not adhere to the

ID2D1RenderTarget::DrawGlyphRun takes the following params: D2D1_POINT_2F baselineOrigin, __in CONST DWRITE_GLYPH_RUN *glyphRun, __in ID2D1Brush *foregroundBrush, DWRITE_MEASURING_MODE measuringMode /*= DWRITE_MEASURING_MODE_NATURAL */ Where DWRITE_GLYPH_RUN is struct DWRITE_GLYPH_RUN { __notnull IDWriteFontFace* fontFace; FLOAT fontEmSize; UINT32 glyphCount; __field_ecount(glyphCount) UINT16 const* glyphIndices; __field_ecount_opt(glyphCount) FLOAT const* glyphAdvances; __field_ecount_opt(glyphCount) DWRITE_GLYPH_OFFSET const* glyphOffsets; BOOL isSideways; UINT32 bidiLevel; }; I am trying to