Additional fix for http://code.google.com/p/jmonkeyengine/issues/detail?id=504.

Fixes displaying leftover characters in BitmapText when setting the text to a smaller string and a weird situation where the scene would stop rendering do to improper buffer limit.

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10060 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/android/com/jme3/renderer/android/OGLESShaderRenderer.java

@@ -1824,7 +1824,7 @@ public class OGLESShaderRenderer implements Renderer {
                     context.boundArrayVBO = bufId;
                 }
 
-                vb.getData().clear();
+                vb.getData().rewind();
 
                 Android22Workaround.glVertexAttribPointer(loc,
                                     vb.getNumComponents(),
@@ -1935,7 +1935,7 @@ public class OGLESShaderRenderer implements Renderer {
                 count);
                  */
             } else {
-                indexData.clear();
+                indexData.rewind();
                 GLES20.glDrawElements(
                         convertElementMode(mesh.getMode()),
                         indexBuf.getData().limit(),
@@ -2131,7 +2131,7 @@ public class OGLESShaderRenderer implements Renderer {
 
         int vertCount = mesh.getVertexCount();
         Buffer indexData = indexBuf.getData();
-        indexData.clear();
+        indexData.rewind();
 
         if (mesh.getMode() == Mode.Hybrid) {
             int[] modeStart = mesh.getModeStart();
@@ -2202,7 +2202,7 @@ public class OGLESShaderRenderer implements Renderer {
             if ((attribs[loc] != vb) || vb.isUpdateNeeded()) {
                 // NOTE: Use data from interleaved buffer if specified
                 VertexBuffer avb = idb != null ? idb : vb;
-                avb.getData().clear();
+                avb.getData().rewind();
                 avb.getData().position(vb.getOffset());
 
                 // Upload attribute data