DirectX11 mip mapping

Chris N · 2012-09-07T15:19:27

Hey everyone, I'm working on a game with DirectX11 and I need to apply a mip mapping on my textures when they get far from the camera (I actually have a menu with a lot of textures far from the camera and the mip mapping doesn't seem to be applied because the framerate is quite low...) I've searched for 3 days how I could do this and I found many solutions but none of them seems to work... I have this piece of code that create a texture, and I can show you other pieces if required : D3D11_TEXTURE2D_DESC textureDesc; ZeroMemory( &textureDesc, sizeof(textureDesc) ); textureDesc.Width = width; textureDesc.Height = height; textureDesc.MipLevels = 1; textureDesc.ArraySize = 1; textureDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM; textureDesc.SampleDesc.Count = 1; textureDesc.Usage = D3D11_USAGE_DEFAULT; textureDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE; textureDesc.CPUAccessFlags = 0; textureDesc.MiscFlags = D3D11_RESOURCE_MISC_GENERATE_MIPS; When I try to change the MipLevels value to 0 or another value, I get an error... My question is : What should I do to get the mip mapping to work ? Do you have any clue, any idea. Sorry for my average english I'm french Thanks a lot !

Graphics and GPU Programming Programming

Started by Visje September 06, 2012 10:10 AM

30 comments, last by Visje 11 years, 7 months ago

Erik Rufelt

5,903

September 07, 2012 03:15 PM

You should be able to call GenerateMips only once at load time also, right after UpdateSubresource, and during frame-time use the exact same code as before when mip-levels was 1.