RTOS: J6 -Dra7xx-Display Sub System - Alpha blending in a specific pipeline of the overlay

Gokul Kujulva

Genius 4465 points

Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

Hi all,

Is it possible to do the alpha blending in a specific pipeline of the overlay ?

Also is it possible to do the alpha blending in specific area region (particular rectangle area region) ?

Thanks & regards

Gokul

over 8 years ago

0 ToddMullanix over 8 years ago

TI__Guru* 96960 points

I've escalated your thread to the dev team.

Todd

0 Brijesh Jadav over 8 years ago in reply to ToddMullanix

TI__Guru**** 480505 points

Well you could have video/graphics pipeline smaller than actual video display and enable/do blending for this smaller window.

Rgds,
Brijesh

0 Gokul Kujulva over 8 years ago in reply to Brijesh Jadav

Genius 4465 points

Thanks Brijesh. Is it possible to test in Vision SDK DSS application(M4core- sysbios rtos) ?

0 Brijesh Jadav over 8 years ago in reply to Gokul Kujulva

TI__Guru**** 480505 points

Yes, it is possible to test it out in vision sdk.
Currently all examples uses full frame graphics over the video. you could reduce graphics frame size and test it out

Regards,
Brijesh

0 Gokul Kujulva over 8 years ago in reply to Brijesh Jadav

Genius 4465 points

Hi Brijesh,

Do we need to have two video data in two different pipelines ?
can you explain with more detail to achieve it ?

Thanks
Gokul

0 Brijesh Jadav over 8 years ago in reply to Gokul Kujulva

TI__Guru**** 480505 points

Hi Gokul,

Well essentially, you want to blend small window with the other larger window, correct?
You could have full Video display and reduce the graphics size from the usecase. or the other way, you could have video to be of smaller size and keep the graphics full size. Now you could change the z-order of the different pipelines and enable the blending on the top window.

Most of these controls are set the default values in the API ChainsCommon_SetDctrlConfig in the file vision_sdk\examples\tda2xx\src\usecases\common\chains_common.c. You could go through this function to get the idea about how to change z-order and enable blending.

Rgds,
brijesh

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RTOS: J6 -Dra7xx-Display Sub System - Alpha blending in a specific pipeline of the overlay