# Binary File Generation with samplerExternalOES type **URL:** \ **Category:** PowerVR Insider\ **Created:** [April 13, 2017, 10:47am UTC](https://forums.imgtec.com/t/binary-file-generation-with-samplerexternaloes-type/2531 "2017-04-13T10:47:27Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![jbmaher](https://avatars.discourse-cdn.com/v4/letter/j/50afbb/32.png) [@jbmaher](https://forums.imgtec.com/u/jbmaher)\ **Post date:** [April 13, 2017, 10:47am UTC](https://forums.imgtec.com/t/binary-file-generation-with-samplerexternaloes-type/2531/1 "2017-04-13T10:47:27Z")
Hello All, Has anyone experienced problems generating a program binary, when the fragment shader contains both sampler2d and samplerExternalOES types? Compiling the program within the application, I see no problems and the program runs as expected. However when I create the binary version of the same program and load that I get a very different behaviour. I have seen some reports problems encountered when combining these types sampler types ? [http://stackoverflow.com/questions/13376254/android-opengl-combination-of-surfacetexture-external-image-and-ordinary-textu](http://stackoverflow.com/questions/13376254/android-opengl-combination-of-surfacetexture-external-image-and-ordinary-textu) I should also point out that I have successfully created and loaded binary that contain sampler2d and samplerExternalOES types exclusively. -J ---
**Author:** ![MartonTamas](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/martontamas/32/297_2.png) [@MartonTamas](https://forums.imgtec.com/u/MartonTamas)\ **Post date:** [April 13, 2017, 12:37pm UTC](https://forums.imgtec.com/t/binary-file-generation-with-samplerexternaloes-type/2531/2 "2017-04-13T12:37:47Z")
Hi John, do you have an android apk that we can use to reproduce the problem? (just to see if it’s a driver bug or not) Also, what platform are you running this on? What is the driver’s version? bests, Marton