Pixel Plotting a texture?

I''ve had a similar problem in one of my programs. Although I was overwriting a texture. There''s a function that copies one surface to another. In fact there are two functions. One to copy from the default to a systemmem texture and one the other way round. I wanted to copy from a default to a default. So used both.

Now this is a bit of a hack and I imagine there must be a better way. In my program speed didn''t matter, I was only rendering once a mouseclick anyway.

Using this method you can copy to a systemmem texture and check that.

D3DDevice->GetRenderTargetData(surf, interSurf);
D3DDevice->UpdateSurface(interSurf, NULL, texSurf, NULL);

PS. Are you the fourty-two from the Wavelength forums?

You could create dynamic textures, given your hardware supports it.


Quote from dx sdk:

Keep the following things in mind when working with dynamic textures.

They cannot be managed. For example, their pool cannot be D3DPOOL_MANAGED.
Dynamic textures can be locked, even if they are created in D3DPOOL_DEFAULT.
D3DLOCK_DISCARD is a valid lock flag for dynamic textures.

Though i just realized that you want to read back pixels, then dynamic texs won't work.

[edited by - Nik02 on July 13, 2003 6:32:46 PM]