Magic Cube

import android.app.ActivityManager;

import android.content.Context;

import android.content.pm.ConfigurationInfo;

   private static boolean mSupportsGigaminx;

      assignMaxComponents();

///////////////////////////////////////////////////////////////////////////////////////////////////

// Go around bugs on Qualcomm Adreno driver V@331 (present in Samsung Galaxy J4+ and at least some

// versions of other Samsung Galaxy phones).

// On this driver, it is not possible to assign more than about 6000 bytes for uniform variables in

// the vertex shader. We thus need to limit the size of our uniform arrays. The only way seems to be

// to limit the number of Mesh components, but then on this platform we cannot support the largest

// object in terms of number of movable parts - the Gigaminx.

   private void assignMaxComponents()

     {

     Context context = mView.getContext();

     final ActivityManager activityManager     = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

     final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();

     int glESversion = configurationInfo.reqGlEsVersion;

     int major = glESversion >> 16;

     int minor = glESversion & 0xff;

     MeshBase.setMaxEffComponents(242);   // the largest object, Gigaminx, has 242 components

     mSupportsGigaminx = true;

     if( major==3 && minor==0 )

       {

       String vendor  = GLES30.glGetString(GLES30.GL_VENDOR);

       String version = GLES30.glGetString(GLES30.GL_VERSION);

       if( vendor.contains("Qualcomm") && version.contains("V@331") )

         {

         // on driver version 331,  do not support Gigaminx.

         // Then Cube5 is the largest with 98 components.

         MeshBase.setMaxEffComponents(98);

         mSupportsGigaminx = false;

         }

       }

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

   public static boolean supportsGigaminx()

     {

     return mSupportsGigaminx;

     }