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RenderTexture returns format not supported for ID3D11RenderTargetView

Discussion in 'Windows' started by mashman, Sep 18, 2013.

  1. mashman

    mashman

    Joined:
    Aug 23, 2013
    Posts:
    8
    I'm using a RenderTexture to get a native texture for rendering by an external native plugin, but have a hit a snag,

    I can successfully static_cast<ID3D11Texture2D*> the pointer returned by RenderTexture.GetNativePtr() in my rendering plugin, but when I observe the texture descriptor from my rendering setup code the texture format is DXGI_FORMAT_R8G8B8A8_TYPELESS. According ID3D11Device::CheckFormatSupport() a texture with this format cannot be used as a render target, and when attempting to CreateRenderTargetView() I end up getting E_INVALIDARG.

    Am I missing something basic here? Is there a way to get an ID3D11Texture2D from Unity which can be rendered to by a plugin?

    Thanks in advance...
     
    mashman, Sep 18, 2013
    #1

  2. Tautvydas-Zilys

    Tautvydas-Zilys

    Unity Technologies

    Joined:
    Jul 25, 2013
    Posts:
    10,504
    Hello,

    when calling CreateRenderTargetView, in D3D11_RENDER_TARGET_VIEW_DESC structure you should set format to either DXGI_FORMAT_R8G8B8A8_UINT or DXGI_FORMAT_R8G8B8A8_UNORM_SRGB.
     
    Tautvydas-Zilys, Sep 19, 2013
    #2
    DevDuFF likes this.

  3. mashman

    mashman

    Joined:
    Aug 23, 2013
    Posts:
    8
    Excellent. Anything else I should watch out for when rendering to the RenderTexture.GetNativeTexturePtr() from my native rendering plugin?
     
    mashman, Sep 20, 2013
    #3

  4. Tautvydas-Zilys

    Tautvydas-Zilys

    Unity Technologies

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    Tautvydas-Zilys, Sep 20, 2013
    #4

  5. DevDuFF

    DevDuFF

    Joined:
    Jan 3, 2013
    Posts:
    17
    DevDuFF, Aug 28, 2015
    #5

  6. Tautvydas-Zilys

    Tautvydas-Zilys

    Unity Technologies

    Joined:
    Jul 25, 2013
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    You don't get to set D3D11_TEXTURE2D_DESC - it is set when texture is created by Unity. You can only read it by calling ID3D11Texture2D::GetDesc().

    Regarding D3D11_RENDER_TARGET_VIEW_DESC:
    * You must set ViewDimension to D3D11_RTV_DIMENSION_TEXTURE2D;
    * If you specify to use mipmaps for rendertexture in Unity, you can specify Texture2D.MipSlice to be any mip. If you don't use mipmaps, it must be 0;
    * Format depends on format you specified on Unity side when creating the render texture.
     
    Tautvydas-Zilys, Aug 31, 2015
    #6

  7. Yashiz

    Yashiz

    Joined:
    Jul 9, 2015
    Posts:
    11
    Hi,

    In Unity 2017.1, ID3D11Texture2D::GetDesc() always returns format as DXGI_FORMAT_R8G8B8A8_TYPELESS, no matter in Unity, the RenderTexture format is ARGBFloat, or ARGBHalf, or RFloat. How the conversion is made ?

    I would like to use Unity to render some G-Buffers, and pass the render textures to my native plugin, that is a render in DX11. Do you have suggestions about how to that? You know it is not precise enough to store positions and normals in DXGI_FORMAT_R8G8B8A8_TYPELESS.

    Any tutorials or docs about inter-operation between Unity textures and DX11 native textures would be helpful.

    Thanks,

    Yashiz
     
    Yashiz, Sep 19, 2017
    #7

  8. Tautvydas-Zilys

    Tautvydas-Zilys

    Unity Technologies

    Joined:
    Jul 25, 2013
    Posts:
    10,504
    That doesn't sound right, do you have a small sample that demonstrates this behaviour? From what I call tell, it should create DXGI_FORMAT_R16G16B16A16_TYPELESS for ARGBHalf, DXGI_FORMAT_R32G32B32A32_TYPELESS for ARGBFloat and DXGI_FORMAT_R32_TYPELESS for RFloat.
     
    Tautvydas-Zilys, Sep 19, 2017
    #8

  9. Yashiz

    Yashiz

    Joined:
    Jul 9, 2015
    Posts:
    11
    Thank you for the confirmation Tautvydas-Zilys. It was my own stupid error that I didn't pass the correct render texture.
     
    Yashiz, Sep 20, 2017
    #9