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TI Home » TI E2E Community » Support Forums » Embedded Software » Linux » Linux forum » Segmentation Fault with bufferclass_ti module with new Graphics SDK 4.06.00.01
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    Segmentation Fault with bufferclass_ti module with new Graphics SDK 4.06.00.01

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    Nick Reed
    Posted by Nick Reed
    on Apr 10 2012 15:42 PM
    Intellectual465 points

    We recently upgraded to the official Graphics SDK 4.06.00.01 release, and in the process updated some of the dependent packages (syslink, sysbios, xdc, ipc).

    Some of our software written to use the bufferclass_ti module with multiple devices was previously working with the old versions of these libraries, but now seg-faults in some GL library calls.

    I see that v3dfx is not supported in this release of the Graphics SDK, and wondered if that applied to direct buffer class usage as well.

    Thanks for any assistance you can offer,

    Nick Reed

    ti8148 dm8148 DM814x EVM 814x DM814x TI814x AM387x
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    • Prathap Srinivas
      Posted by Prathap Srinivas
      on Apr 13 2012 01:59 AM
      Expert4140 points

      Hi Nick,

      We have tested the buffer classdriver with the unit test example -

      http://processors.wiki.ti.com/index.php/OpenGLES_Texture_Streaming_-_bc-cat_User_Guide

      v3dfx is not supported but that should not affect the direct bufferclass usage.

      As you might be aware, bufferclass is a propreitary texture streaming extension which was introduced as there was no standard Khronos extension available for video streaming use case. With this release we have introduced the support for eglimage for video streaming use cases. However bufferclass is still supported & sanity tested with this release using the unit test example gles1_bc_mmap.The executable(non-Xorg app) 2402.gles1_bc_mmap.rarfor the same is attached.

      Thanks,

      Prathap.

      If my reply answers your question then please click on the "Verify Answer" button.

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    • Prathap Srinivas
      Posted by Prathap Srinivas
      on Apr 19 2012 17:31 PM
      Verified Answer
      Verified by Nick Reed
      Expert4140 points

      Hi Nick,

      Can you try with the attached updated library 8420.libGLESv2.rar& let us know if this fixes the issue.

      If so please mark this as verified answer so that other users are also benefited when  required.

      Thanks,

      Prathap.

      If my reply answers your question then please click on the "Verify Answer" button.

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    • Nick Reed
      Posted by Nick Reed
      on Apr 19 2012 17:35 PM
      Intellectual465 points

      We were able to test with the updated library and this fixed our issue.  It looks like there was only an issue with the buffer class module when used in a GLES2 application, but all is resolved now.

      Thanks for your speedy response.

      Nick

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    • Prathap Srinivas
      Posted by Prathap Srinivas
      on May 03 2012 13:04 PM
      Verified Answer
      Verified by Nick Reed
      Expert4140 points

      Welcome Nick. Thanks for the tests & confirmation on the fix to be working fine.

      The release notes also has been updated with this information -

      http://processors.wiki.ti.com/index.php/RN_4_06_00_01#Limitations.2F_Known_Issues

      Thanks,

      Prathap.

      If my reply answers your question then please click on the "Verify Answer" button.

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