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Capturing a from screen

Started by shvalb Jan 12, 2005 at 4:15 AM 1 reply 350+ views

Original Post

Jan 12, 2005 at 4:15 AM

Hi. I have a program that render geometry shapes to the screen and creates an Avi file from it. the creation of the file is done like this: CreateOffscreenPlainSurface() - Creates a surface to hold the front buffer GetFrontBufferData() - gets the front buffer and saves it to a file LPD3DXBUFFER - declares a buffer D3DXSaveSurfaceToFileInMemory - saves front surface buffer to a PD3DXBUFFER buffer. and few more steps The result of it is that the rendered screen is being captured to a file, which is good, but!, if while the screen is being rendered I switch to a different application it captures the different application rather than the desired one. How can I copy the front buffer data to a file without involving the screen ?? is there a way ?? Thanks alot!

DBX

Jan 12, 2005 at 4:39 AM

The front buffer is the screen. I suspect what you really want is to capture the back buffer before presenting it, or just render to a texture and save that.

__Daedalus__

Jan 12, 2005 at 7:35 AM

Create an off screen render target and use that instead of the front buffer. Look at the CreateRenderTarget() and SetRenderTarget() methods of IDirect3DDevice9

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