[Interest] Force DX9 in ANGLE OpenGL driver

Andrew Knight qt at panimo.net
Sat Jan 10 17:33:41 CET 2015

Hi Thomas,

On 01/10/2015 03:01 PM, Thomas Sevaldrud wrote:
> Hi, is there any way to force ANGLE to use Directx9 instead of 11
> through the Qt ANGLE wrappers?


> Any magic environment variables etc?


By default, d3d11 is used (if initialization succeeds), d3d9 is used as 
a fallback, and warp (the D3D11 software rasterizer) is used if neither 
hardware configs initialize.

I'll now update a doc patch for this. Out of interest, can you describe 
the problems you are experiencing with D3D11? There is currently work in 
progress to blacklist certain GPUs/drivers which behave badly with 
D3D11, so it would be good to hear about your situation.

> Cheers,
> Thomas
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