Use GlBindable.bind() in MultiFilter

cameraview/src/main/java/com/otaliastudios/cameraview/filter/MultiFilter.java

@@ -226,7 +226,7 @@ public class MultiFilter implements Filter, OneParameterFilter, TwoParameterFilt
                 // Each filter outputs into its own framebuffer object, except the
                 // last filter, which outputs into the default framebuffer.
                 if (!isLast) {
-                    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, state.outputFramebuffer.getId());
+                    state.outputFramebuffer.bind();
                     GLES20.glClearColor(0, 0, 0, 0);
                 } else {
                     GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
@@ -245,9 +245,10 @@ public class MultiFilter implements Filter, OneParameterFilter, TwoParameterFilt
                 // It is the framebuffer texture from this cycle. If this is the last
                 // filter, reset this value just to cleanup.
                 if (!isLast) {
-                    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, state.outputTexture.getId());
+                    state.outputTexture.bind();
                 } else {
                     GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
+                    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
                 }
 
                 GLES20.glUseProgram(0);

demo/src/main/java/com/otaliastudios/cameraview/demo/CameraActivity.java

@@ -47,7 +47,7 @@ import java.util.List;
 public class CameraActivity extends AppCompatActivity implements View.OnClickListener, OptionView.Callback {
 
     private final static CameraLogger LOG = CameraLogger.create("DemoApp");
-    private final static boolean USE_FRAME_PROCESSOR = false;
+    private final static boolean USE_FRAME_PROCESSOR = true;
     private final static boolean DECODE_BITMAP = false;
 
     private CameraView camera;
@@ -372,13 +372,13 @@ public class CameraActivity extends AppCompatActivity implements View.OnClickLis
         message(filter.toString(), false);
 
         // Normal behavior:
-        // camera.setFilter(filter.newInstance());
+        camera.setFilter(filter.newInstance());
 
         // To test MultiFilter:
-        DuotoneFilter duotone = new DuotoneFilter();
-        duotone.setFirstColor(Color.RED);
-        duotone.setSecondColor(Color.GREEN);
-        camera.setFilter(new MultiFilter(duotone, filter.newInstance()));
+        // DuotoneFilter duotone = new DuotoneFilter();
+        // duotone.setFirstColor(Color.RED);
+        // duotone.setSecondColor(Color.GREEN);
+        // camera.setFilter(new MultiFilter(duotone, filter.newInstance()));
     }
 
     @Override