diff --git a/core/src/processing/opengl/FrameBuffer.java b/core/src/processing/opengl/FrameBuffer.java
index 6cd05c893..31d50f559 100644
--- a/core/src/processing/opengl/FrameBuffer.java
+++ b/core/src/processing/opengl/FrameBuffer.java
@@ -198,16 +198,16 @@ public class FrameBuffer implements PConstants {
   }
 
   public void copy(FrameBuffer dest, int mask) {
-    pgl.bindFramebuffer(PGL.READ_FRAMEBUFFER, this.glFbo);
-    pgl.bindFramebuffer(PGL.DRAW_FRAMEBUFFER, dest.glFbo);
+    pgl.bindFramebufferImpl(PGL.READ_FRAMEBUFFER, this.glFbo);
+    pgl.bindFramebufferImpl(PGL.DRAW_FRAMEBUFFER, dest.glFbo);
     pgl.blitFramebuffer(0, 0, this.width, this.height,
                         0, 0, dest.width, dest.height, mask, PGL.NEAREST);
-    pgl.bindFramebuffer(PGL.READ_FRAMEBUFFER, pg.getCurrentFB().glFbo);
-    pgl.bindFramebuffer(PGL.DRAW_FRAMEBUFFER, pg.getCurrentFB().glFbo);
+    pgl.bindFramebufferImpl(PGL.READ_FRAMEBUFFER, pg.getCurrentFB().glFbo);
+    pgl.bindFramebufferImpl(PGL.DRAW_FRAMEBUFFER, pg.getCurrentFB().glFbo);
   }
 
   public void bind() {
-    pgl.bindFramebuffer(PGL.FRAMEBUFFER, glFbo);
+    pgl.bindFramebufferImpl(PGL.FRAMEBUFFER, glFbo);
   }
 
   public void disableDepthTest() {
diff --git a/core/src/processing/opengl/PGL.java b/core/src/processing/opengl/PGL.java
index 42e338330..d00798c6a 100644
--- a/core/src/processing/opengl/PGL.java
+++ b/core/src/processing/opengl/PGL.java
@@ -511,8 +511,8 @@ public abstract class PGL {
   protected void syncBackTexture() {
     if (usingFrontTex) needSepFrontTex = true;
     if (1 < numSamples) {
-      bindFramebuffer(READ_FRAMEBUFFER, glMultiFbo.get(0));
-      bindFramebuffer(DRAW_FRAMEBUFFER, glColorFbo.get(0));
+      bindFramebufferImpl(READ_FRAMEBUFFER, glMultiFbo.get(0));
+      bindFramebufferImpl(DRAW_FRAMEBUFFER, glColorFbo.get(0));
       blitFramebuffer(0, 0, fboWidth, fboHeight,
                       0, 0, fboWidth, fboHeight,
                       COLOR_BUFFER_BIT, NEAREST);
@@ -529,12 +529,12 @@ public abstract class PGL {
     if (needFBOLayer(clear0)) {
       if (!fboLayerCreated) createFBOLayer();
 
-      bindFramebuffer(FRAMEBUFFER, glColorFbo.get(0));
+      bindFramebufferImpl(FRAMEBUFFER, glColorFbo.get(0));
       framebufferTexture2D(FRAMEBUFFER, COLOR_ATTACHMENT0,
                            TEXTURE_2D, glColorTex.get(backTex), 0);
 
       if (1 < numSamples) {
-        bindFramebuffer(FRAMEBUFFER, glMultiFbo.get(0));
+        bindFramebufferImpl(FRAMEBUFFER, glMultiFbo.get(0));
       }
 
       if (firstFrame) {
@@ -580,7 +580,7 @@ public abstract class PGL {
       syncBackTexture();
 
       // Draw the contents of the back texture to the screen framebuffer.
-      bindFramebuffer(FRAMEBUFFER, 0);
+      bindFramebufferImpl(FRAMEBUFFER, 0);
 
       clearDepth(1);
       clearColor(0, 0, 0, 0);
@@ -670,14 +670,14 @@ public abstract class PGL {
     frontTex = 1;
 
     genFramebuffers(1, glColorFbo);
-    bindFramebuffer(FRAMEBUFFER, glColorFbo.get(0));
+    bindFramebufferImpl(FRAMEBUFFER, glColorFbo.get(0));
     framebufferTexture2D(FRAMEBUFFER, COLOR_ATTACHMENT0, TEXTURE_2D,
                          glColorTex.get(backTex), 0);
 
     if (multisample) {
       // Creating multisampled FBO
       genFramebuffers(1, glMultiFbo);
-      bindFramebuffer(FRAMEBUFFER, glMultiFbo.get(0));
+      bindFramebufferImpl(FRAMEBUFFER, glMultiFbo.get(0));
 
       // color render buffer...
       genRenderbuffers(1, glColorBuf);
@@ -766,7 +766,7 @@ public abstract class PGL {
     clearColor(r, g, b, a);
     clear(DEPTH_BUFFER_BIT | STENCIL_BUFFER_BIT | COLOR_BUFFER_BIT);
 
-    bindFramebuffer(FRAMEBUFFER, 0);
+    bindFramebufferImpl(FRAMEBUFFER, 0);
 
     fboLayerCreated = true;
   }
@@ -2559,11 +2559,11 @@ public abstract class PGL {
   // to glReadPixels() should be done in readPixelsImpl().
 
   public void readPixels(int x, int y, int width, int height, int format, int type, Buffer buffer){
-    boolean needEndBegin = format != STENCIL_INDEX &&
-                           format != DEPTH_COMPONENT && format != DEPTH_STENCIL;
-    if (needEndBegin) pg.beginReadPixels();
+    boolean pgCall = format != STENCIL_INDEX &&
+                     format != DEPTH_COMPONENT && format != DEPTH_STENCIL;
+    if (pgCall) pg.beginReadPixels();
     readPixelsImpl(x, y, width, height, format, type, buffer);
-    if (needEndBegin) pg.endReadPixels();
+    if (pgCall) pg.endReadPixels();
   }
 
   protected abstract void readPixelsImpl(int x, int y, int width, int height, int format, int type, Buffer buffer);
@@ -2745,7 +2745,13 @@ public abstract class PGL {
 
   // Framebuffers Objects
 
-  public abstract void bindFramebuffer(int target, int framebuffer);
+  public void bindFramebuffer(int target, int framebuffer) {
+    pg.beginBindFramebuffer(target, framebuffer);
+    bindFramebufferImpl(target, framebuffer);
+    pg.endBindFramebuffer(target, framebuffer);
+  }
+  protected abstract void bindFramebufferImpl(int target, int framebuffer);
+
   public abstract void deleteFramebuffers(int n, IntBuffer framebuffers);
   public abstract void genFramebuffers(int n, IntBuffer framebuffers);
   public abstract void bindRenderbuffer(int target, int renderbuffer);
diff --git a/core/src/processing/opengl/PGraphicsOpenGL.java b/core/src/processing/opengl/PGraphicsOpenGL.java
index 0c5102853..bb5e75f6d 100644
--- a/core/src/processing/opengl/PGraphicsOpenGL.java
+++ b/core/src/processing/opengl/PGraphicsOpenGL.java
@@ -1812,11 +1812,24 @@ public class PGraphicsOpenGL extends PGraphics {
     }
   }
 
-  public void beginReadPixels() {
+  protected void beginBindFramebuffer(int target, int framebuffer) {
+    // Actually, nothing to do here.
+  }
+
+  protected void endBindFramebuffer(int target, int framebuffer) {
+    if (framebuffer == 0 && currentFramebuffer != null &&
+                            currentFramebuffer.glFbo != 0) {
+      // The user is setting the framebuffer to 0 (screen buffer), but the
+      // renderer is rendering to an offscreen buffer.
+      currentFramebuffer.bind();
+    }
+  }
+
+  protected void beginReadPixels() {
     beginPixelsOp(OP_READ);
   }
 
-  public void endReadPixels() {
+  protected void endReadPixels() {
     endPixelsOp();
   }
 
diff --git a/core/src/processing/opengl/PJOGL.java b/core/src/processing/opengl/PJOGL.java
index e70af60e2..0bff30395 100644
--- a/core/src/processing/opengl/PJOGL.java
+++ b/core/src/processing/opengl/PJOGL.java
@@ -2414,7 +2414,7 @@ public class PJOGL extends PGL {
   // Framebuffers Objects
 
   @Override
-  public void bindFramebuffer(int target, int framebuffer) {
+  protected void bindFramebufferImpl(int target, int framebuffer) {
     gl.glBindFramebuffer(target, framebuffer);
   }
 
diff --git a/java/libraries/lwjgl/src/processing/lwjgl/PLWJGL.java b/java/libraries/lwjgl/src/processing/lwjgl/PLWJGL.java
index 7be2db1e0..3b3ef6aeb 100644
--- a/java/libraries/lwjgl/src/processing/lwjgl/PLWJGL.java
+++ b/java/libraries/lwjgl/src/processing/lwjgl/PLWJGL.java
@@ -1925,7 +1925,7 @@ public class PLWJGL extends PGL {
 
   // Framebuffers Objects
 
-  public void bindFramebuffer(int target, int framebuffer) {
+  protected void bindFramebufferImpl(int target, int framebuffer) {
     GL30.glBindFramebuffer(target, framebuffer);
   }