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Telanor

Get Texture2DDescription from ShaderResourceView

5 posts in this topic

In c++ you can do the following to get the dimensions of a ShaderResourceView:

[code]
void foo(ID3D11ShaderResourceView* texture)
{
ID3D11Resource* resource;
ID3D11Texture2DPtr texResource;
D3D11_TEXTURE2D_DESC desc;
texture->GetResource(&resource);
texResource.Attach(reinterpret_cast<ID3D11Texture2D*>(resource));
texResource->GetDesc(&desc);
perBatch.TextureSize = XMFLOAT2(static_cast<float>(desc.Width), static_cast<float>(desc.Height));
}
[/code]

I'm trying to accomplish the same thing in SlimDX but I can't seem to figure out how. The logical way seems to be texture.Resource.Description.Width but the Direct3D11.Resource class doesn't have a Description property. Anyone know how to do this in SlimDX?
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The descriptions are strongly typed. As such you will find them under the derived type from Resource... i.e. Texture2D.Description
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So I do something like this?

[code]
var resource = (Texture2D)texture.Resource;
perBatch.TextureSize = new Vector2(resource.Description.Width, resource.Description.Height);
[/code]
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I don't think that will work (it might, but doubtful)...

[code]var resource = new Texture2D.FromPointer(texture.Resource.ComPointer);[/code]

should work, just remember to dispose of it when done, probably. depending on if you hold a handle to the texture in the resource view or not. (If you do, don't dispose, if you don't, do dispose). Edited by Washu
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Casting will work just fine. There's no need to use the FromPointer method, which is intended only for interop with external libraries.
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Alright, thanks. I'd test it but I'm still in the process of converting from XNA to slimdx so I can't yet.
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