I am posting this question on behalf of hmelyoff because the original post was accidentally deleted. We're sorry that the original post was removed. Below is the text from the deleted post.
We found acriticalissuewith latest Intel HD (4600) driver build 15.36.7.64.3960 (latest), however Intel HD driver build 15.33.30.64.3958 (latest)works fineinsame situation.
issuealso present in 15.36.3.64.3907 (previous). I can not install 15.33.29.64.3945 (previous) - website shows that my systemsupportedbut release notes in driver shows that notsupportedand driver showserror.
AMD and Nvidia graphics have noissues.
In our application we have 2 textures, both with same type:
Width = 1920;
Height = 1088;
MipLevels = 1;
ArraySize = 1;
Format = DXGI_FORMAT_B8G8R8X8_UNORM;
SampleDesc = { Count=1, Quality = 0 };
Usage = D3D11_USAGE_DEFAULT;
BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
CPUAccessFlags = 0;
MiscFlags = D3D11_RESOURCE_MISC_SHARED;
pTex11 - opened from Direct3D9Ex with OpenSharedResource:
FAIL_RET( m_pEngine->m_pd3dDevice9->CreateTexture(lpAllocInfo->dwWidth, lpAllocInfo->dwHeight,
1,
D3DUSAGE_RENDERTARGET,
D3DFMT_X8R8G8B8,
D3DPOOL_DEFAULT,
&privateTexture9.p, &hShared) );
FAIL_RET( m_pEngine->m_pD3D11->OpenSharedResource(hShared, IID_ID3D11Texture2D, (void **) &pTex11) );
and pTex11Mipmap - exactly same type as pTex11 (it should be mipmap texture, but we made it same type in our test to isolate thisissue):
D3D11_TEXTURE2D_DESC desc11;
pTex11->GetDesc(&desc11);
//desc11.MipLevels = 0;
//desc11.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
//desc11.MiscFlags = D3D11_RESOURCE_MISC_GENERATE_MIPS;
CComPtrpTex11Mipmap;
FAIL_RET( m_pEngine->m_pD3D11->CreateTexture2D(&desc11, NULL, &pTex11Mipmap) );
Then following call results in all graphics system slow down (including desktop, mouse and other applications):
pContext->CopySubresourceRegion(pTex11Mipmap, 0, 0, 0, 0, pTex11, 0, NULL);
pTex11Mipmap used as shaderresourceview for rendering. Commenting this line solves graphics system slow down.
Theissuecan be reproduced in XSplit Broadcaster in then following way:
1. Run XSplit Broadcaster on Intel HD 4600 (choose Integrated graphics profile if you run on Optimus laptop).
2. Just add Full HD capture card, or Full HD video to a scene (for example Wildlife from Win7 sample videos)
3. Right click on video source and turn onenhanceresize parameter in layout tab
This was tested (for example) on laptop with Win8.1 64-bit installed:
Intel HD 4600 + Nvidia GTX 870M (Optimus)
(Desktop systems shows same behavior)
XSplit Broadcaster 1.3