[vlc-devel] [PATCH v2 02/16] qt: don't load DComp backend when the device doesn't support D3D11 features

[Steve Lhomme]

On 2020-08-17 8:27, Steve Lhomme wrote:
> This is going to be quite limiting for people still using D3D11, likely 
> with old GPUs.

s/D3D11/win7/
They likely have a GPU that only support 9.3 features in D3D11.

> Why is this limit needed ? In the vout we can't render NV12 directly, 
> but it can be worked around with a conversion filter.
> 
> On 2020-08-14 18:43, Pierre Lamot wrote:
>> ---
>>   modules/gui/qt/maininterface/compositor_dcomp.cpp | 9 +++++++--
>>   1 file changed, 7 insertions(+), 2 deletions(-)
>>
>> diff --git a/modules/gui/qt/maininterface/compositor_dcomp.cpp 
>> b/modules/gui/qt/maininterface/compositor_dcomp.cpp
>> index 69b4145498..23b0612a9e 100644
>> --- a/modules/gui/qt/maininterface/compositor_dcomp.cpp
>> +++ b/modules/gui/qt/maininterface/compositor_dcomp.cpp
>> @@ -157,13 +157,18 @@ bool CompositorDirectComposition::init()
>>           //| D3D11_CREATE_DEVICE_DEBUG
>>               ;
>> +    D3D_FEATURE_LEVEL requestedFeatureLevels[] = {
>> +        D3D_FEATURE_LEVEL_11_1,
>> +        D3D_FEATURE_LEVEL_11_0,
>> +    };
>> +
>>       hr = D3D11CreateDevice(
>>           nullptr,    // Adapter
>>           D3D_DRIVER_TYPE_HARDWARE,
>>           nullptr,    // Module
>>           creationFlags,
>> -        nullptr,
>> -        0, // Highest available feature level
>> +        requestedFeatureLevels,
>> +        ARRAY_SIZE(requestedFeatureLevels),
>>           D3D11_SDK_VERSION,
>>           m_d3d11Device.GetAddressOf(),
>>           nullptr,    // Actual feature level
>> -- 
>> 2.25.1
>>
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