GLContextImpl/GLDrawableImpl.getDefaultReadBuffer(..): Pass hint whether dedicated read-drawable is being used (double buffering)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java b/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
index 94d39a4ab..d11274560 100644
--- a/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLDrawableImpl.java
@@ -260,8 +260,8 @@ public abstract class GLDrawableImpl implements GLDrawable {
   /** Callback for special implementations, allowing GLContext to fetch a custom default read framebuffer. Defaults to zero. */
   protected int getDefaultReadFramebuffer() { return 0; }
   /** Callback for special implementations, allowing GLContext to fetch a custom default read buffer of current framebuffer. */
-  protected int getDefaultReadBuffer(GL gl) {
-      if(gl.isGLES() || getChosenGLCapabilities().getDoubleBuffered()) {
+  protected int getDefaultReadBuffer(GL gl, boolean hasDedicatedDrawableRead) {
+      if( gl.isGLES() || hasDedicatedDrawableRead || getChosenGLCapabilities().getDoubleBuffered() ) {
           // Note-1: Neither ES1 nor ES2 supports selecting the read buffer via glReadBuffer
           // Note-2: ES3 only supports GL_BACK, GL_NONE or GL_COLOR_ATTACHMENT0+i
           return GL.GL_BACK;