imx6/vivante wec7 bitblt/tranparentblt

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imx6/vivante wec7 bitblt/tranparentblt

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franzhofer
Contributor I

Hi all,

I am developing an application for WEC7/imx6q using C++/MFC/VisualStudio 2008.

In my application I quite often use BitBlt and TransparentBlt.

How can these APIs be hardware accelerated ?

In my OS image libGALcore.dll is included, in HKLM\drivers\BuiltIn\GCHAL the entries are the default values (e.g. GC2DAcceleratorEnable 0x1f) are set so I would expect that hardware acceleration is active.

But the times for the Blt-commands are quite long (for TransparentBlt with 800*600*16 about 40ms).

If I change registry settings in GCHAL to disable hardware acceleration the times do not get longer, which shows me that acceleration was not active before.

Can anyone give me a hint where the problem is sitting ?

Thanks !

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CommunityBot
Community Manager
This an automatic process.

We are marking this post as solved, due to the either low activity or any reply marked as correct.

If you have additional questions, please create a new post and reference to this closed post.

NXP Community!

View solution in original post

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YixingKong
Senior Contributor IV

Franz

Had your issue got resolved? If yes, we are going to close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.

Thanks,

Yixing

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tslotfeldt
NXP Employee
NXP Employee

Hi Franz,

Under WEC7 there are additional entries in GCHAL.REG that are used to indicate whether a Blt operation should be handled by the GPU hardware. The values associated with the following entries are thresholds that you can modify to optimize your application: 

GC2DAcceleratorMinSize -> set the min pixel number for hardware to render

GC2DAcceleratorMinPixelForSimpleSrcCopy -> set the min pixel number for simple src copy

GC2DAcceleratorMinPixelForSimpleBrushFill -> set the min pixel number for simple brush fill

GC2DAcceleratorMinPixelForMask -> set the min pixel number for masked blit

Please note that enabling hardware acceleration in the registry will have no effect if the number of pixels in a Blt operation is less than the applicable pixel size threshold specified in the registry. So you should check the values associated with the registry entries listed above to determine if hardware acceleration is engaged in your case.

If you have confirmed that hardware acceleration is configured correctly, and overall graphics performance remains an issue, we encourage you to work with your BSP provider to determine the best path for optimizing your application under WEC7.

Best regards,

~Tore

 

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YixingKong
Senior Contributor IV

Franz

We are sorry for getting back to you so late. Are you still stuck with the issue? If you have somehow resolved the issue, can we close the discussion? If you still need help, please feel free to reply with an update to this discussion.

Thanks,

Yixing

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tuby
Contributor I

Hello Yixing,

we are designing i.MX6 products, to refresh our product catalog with newer devices.

The mandatory point is that they must have better CPU and 2D graphics performance, compared with our current i.MX53 products (AMD Z160 2D engine, we have optimized by ourself).

Graphics performance for bitmap rendering is crucial, so GC320 2D Composition must be enabled and optimized (perticularly for a good switch between hardware acceleration and software emulation).

The resulting 2D performance has to be visibly better than the one we currently face on our current products.

This is not true, with two different binary demo I've evaluated so far and it is putting on hold our i.MX6 development.

So, can you please give me a reference to a version of the Vivante code that has to be used for getting the best GC320 performance?

Have you additional information about how to get the maximum performance under WEC7?

How can I put the BSP maker in contact with Vivante, to be sure they will use the latest technology?

Thank you in advance

Stefano

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YixingKong
Senior Contributor IV

Steano

Thank you for oyur prompt response. I will find Vivante expert to answer your question.

Thanks,

Yixing

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YixingKong
Senior Contributor IV

AndreSilva, could you check if you are are able to answer the questions?

Thanks,

Yixing

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YixingKong
Senior Contributor IV

karinavalencia, Could you get Adeneo's help for this customer?

Thanks,

Yixing

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YixingKong
Senior Contributor IV

Deactivated user, could you please have a look at this customer's issue?

Thanks,

Yixing

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karina_valencia
NXP Apps Support
NXP Apps Support

Deactivated user can you let me know if your team has an update on this case please?

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karina_valencia
NXP Apps Support
NXP Apps Support

ChucoChe can you help here?

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tuby
Contributor I

Hello Yixing, Andre, Qingrong,

can you please answer to my question?

Thank you in advance and Best Regards

Stefano

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YixingKong
Senior Contributor IV

JiangJustin, could you help this question?

Thanks,

Yixing

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justin_jiang
NXP Employee
NXP Employee

Hi Yixing,

It need GPU expert team to answer it.

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tuby
Contributor I

Hi Franz,

have you discovered if the GC320 acceleration can really be enabled and disabled?

It seems I'm facing the same situation..

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