does imx6 vivante support alpha belnding in directfb?

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does imx6 vivante support alpha belnding in directfb?

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sonijcp
Contributor II

Hi I'm using directfb to run multiple applications on multiple displays (mainly die to the low overhead, configuration resources etc compared to X)

I can run test apps but in any where there is a blended foreground and background I get a distorted off colour image (I assume because only 1 layer can be accessed directfb reports no error on initialisation but dbinfo only detects a background layer (possibly the issue?))

Programs used to reproduce this df_andi and df_neo

The board I'm using is the variscite var-som-mx6 with their build of yocto daisy as a starting point.

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sonijcp
Contributor II

Hi Igor,

Thanks that was really helpful the problem wasn't alpha blending but the way the Variscite device tree was setup by default. After playing around with some of the test tools in the bundle it soon became pretty obvious.

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi james

alpha blending is supported in directfb, as described in attached

document p.47. Please try with L3.14.28_1.0.0_iMX6QDLS_BUNDLE

Best regards

igor

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sonijcp
Contributor II

Hi Igor,

Thanks that was really helpful the problem wasn't alpha blending but the way the Variscite device tree was setup by default. After playing around with some of the test tools in the bundle it soon became pretty obvious.

View solution in original post

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