Original Post
I am really hoping for some help - this one has me completely stumped... Here goes: I am trying to generate mip maps of my render target textures after rendering a scene into them. The documentation says to create the textures with the D3DUSAGE_AUTOGENMIPMAP flag, which I am doing. I am also using the D3DUSAGE_RENDERTARGET flag to allow me to render into the texture. The documentation also says to use check device format to check if the auto gen feature is supported for a particular format like so: The return value is S_OK, meaning that it should work out just fine. The problem is, I can create the mip maps if I create the textures with a 0 levels argument like so: I have checked with PIX to make sure the mip levels are being created, but even if I call the texture's generate mip level function GenerateMipSubLevels function, then all the sub levels show up black in PIX. I tried using the reference device, and had the same result - the mip levels are created but not ever updated. So I am pretty sure I must be doing something wrong (hopefully someone sees it!). I looked around and found some hints to use a 1 for the levels argument, but that doesn't even create the mip levels. Has anyone had this problem before? If so, how do I get around it? I could lock the texture and generate my own mip textures, but that is going to be slow as hell and I have a bunch of textures to update every frame. Does anyone have any suggestions??? Thanks in advance for any help!
m_pD3D9->CheckDeviceFormat( 0, D3DDEVTYPE_HAL, D3DFMT_X8R8G8B8, D3DUSAGE_AUTOGENMIPMAP | D3DUSAGE_RENDERTARGET, D3DRTYPE_TEXTURE, D3DFMT_A8R8G8B8 );
HRESULT hr =
D3DXCreateTexture( m_pDevice, 512, 512,
0, D3DUSAGE_AUTOGENMIPMAP | D3DUSAGE_RENDERTARGET,
D3DFMT_A8R8G8B8, 0, (IDirect3DTexture9**)&pTexture);
