i.MX ProcessorsのトピックSetting the local alpha blending

Setting the local alpha blending

valentinryzhenk — Mon, 16 Jan 2017 19:44:15 GMT

Hello,

I faced with a problem when setting the local alpha blending.

Use 2 framebuffer:

fb0 for my qt application (widget with a black background and green text information);

fb1 for outputting a video camera using gstreamer 1.0

How to programmatically configure framebuffer on 32 bit?

P.S. Use this article to configure the global alpha blending, but when mixed are black pixels around the green text.

Re: Setting the local alpha blending

igorpadykov — Mon, 16 Jan 2017 23:26:29 GMT

Hi Valentin

one can check ipu examples on

ipu-examples release notes - v0.1 | NXP Community

i.MX6: Alpha blending example code | NXP Community

Best regards
igor
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Re: Setting the local alpha blending

yyuan — Sat, 13 Jul 2019 03:43:52 GMT

hello

i also want to do this.

i want to add qt to video, qt is fb0 , video is fb1,but video blocks qt.

do you know how to solve it?

thank you

Re: Setting the local alpha blending

valentinryzhenk — Tue, 16 Jul 2019 05:24:47 GMT

Hello, here's an example.

Re: Setting the local alpha blending

yyuan — Wed, 17 Jul 2019 00:47:45 GMT

thank you Valentin Ryzhenko

i can`t open the link , but thank you very much.

thank you