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[SlimDX] Surface.FromPointer

Started by FeverGames Apr 6, 2009 at 11:51 PM 8 replies 3.5k views

Original Post

Apr 6, 2009 at 11:51 PM

Hi, I am trying to copy a renderTarget surface to a renderTarget Texture. Can I somehow use


Surface destination = Surface.FromPointer(source.ComPointer);

or is


            bool storedThrow = Configuration.ThrowOnError;
            Configuration.ThrowOnError = false;

            // future: change the first 0 to the ActiveViewTarget id
            Surface destination = texture.GetSurfaceLevel(level);
            if (destination == null || Result.Last.IsFailure)
            {
                Configuration.ThrowOnError = storedThrow;
                throw new InvalidOperationException("Could not obtain resolve target surface.");
            }

            Result result = device.StretchRectangle(source, destination, TextureFilter.Linear);

            if (result.IsFailure)
            {
                result = device.StretchRectangle(source, destination, TextureFilter.None);
                if (result.IsFailure)
                {
                    result = Surface.FromSurface(destination, source, Filter.Default, 0);
                    if (result.IsFailure)
                    {
                        destination.Dispose();
                        source.Dispose();

                        Configuration.ThrowOnError = storedThrow;
                        throw new InvalidOperationException("Could not copy the surfaces.");
                    }
                }
            }

            Configuration.ThrowOnError = storedThrow;
        }

Which one and what would be the fastest? I am trying to implement something like XNA has, RenderTarget.GetTexture();

FeverGames

Apr 7, 2009 at 1:03 AM

Or am I totally looking in the wrong direction with this? We are writing a wrapper for both DX9, DX10 and XNA. Because DX10 and DX9 don't use surfaces anymore as in DX9 i was thinking about hiding it. But for some purposes (using a render target as texture) I need the surface to be a texture.

Mike.Popoloski

Apr 7, 2009 at 6:25 AM

Textures and Surfaces are different things. In D3D9, a texture can have many surfaces, which is why you must call GetSurfaceLevel() to get a particular surface for a texture.

If you need to go back the other way, you can use GetContainer() on Surface to get the parent texture.

Promit

Apr 7, 2009 at 9:26 AM

You might also want to take a look at RenderToSurface and native samples for how to use it as an alternative. It cuts out a lot of the intermediate tedium in setting this stuff up.

FeverGames

Apr 7, 2009 at 9:27 AM

Awsome! Thanks. Never noticed that method!

FeverGames

Apr 7, 2009 at 11:25 PM

So does the GetContainer method only works when the surface is part of a created renderTarget texture? Cause i am getting a "The requested COM interface is not available (-2147467262)" on a surface that is created with Surface.CreateRenderTarget();

Mike.Popoloski

Apr 7, 2009 at 11:27 PM

From the DirectX documentation:

Quote:
Provides access to the parent cube texture or texture (mipmap) object, if this surface is a child level of a cube texture or a mipmap. This method can also provide access to the parent swap chain if the surface is a back-buffer child.

If the surface is created using IDirect3DDevice9::CreateRenderTarget or IDirect3DDevice9::CreateOffscreenPlainSurface or IDirect3DDevice9::CreateDepthStencilSurface, the surface is considered stand alone. In this case, IDirect3DSurface9::GetContainer will return the Direct3D device used to create the surface.

FeverGames

Apr 7, 2009 at 11:29 PM

Quote:
Original post by Mike.Popoloski
From the DirectX documentation:

Quote:
Provides access to the parent cube texture or texture (mipmap) object, if this surface is a child level of a cube texture or a mipmap. This method can also provide access to the parent swap chain if the surface is a back-buffer child.

If the surface is created using IDirect3DDevice9::CreateRenderTarget or IDirect3DDevice9::CreateOffscreenPlainSurface or IDirect3DDevice9::CreateDepthStencilSurface, the surface is considered stand alone. In this case, IDirect3DSurface9::GetContainer will return the Direct3D device used to create the surface.

Ok sorry for not finding that on my own. What are my best options then?

FeverGames

Apr 8, 2009 at 12:29 AM

All I am trying to do is making the Surface disapear. I made a class that sort of wraps the rendertarget.

But internally if i make the renderTarget a texture i cannot handle a GetRenderTarget(index) very well, but if i make it a renderTarget Surface I cannot use it as a texture unless it slows down (then i use the code from above with the CopyRect).

I really hope someone can give me some advice (and not the, don't try to hide it advice :P)

FeverGames

Apr 11, 2009 at 3:52 PM

is there no one that has any idea??

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