From 5999bfc14c39faa22c412cb4c8b40eb72b3c7f45 Mon Sep 17 00:00:00 2001
From: Jakub Valtar <jakub.valtar@gmail.com>
Date: Wed, 28 Jan 2015 17:14:13 +0100
Subject: [PATCH] Save now creates opaque images from primary surface

Fixes #3031
---
 .../processing/opengl/PGraphicsOpenGL.java    | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/core/src/processing/opengl/PGraphicsOpenGL.java b/core/src/processing/opengl/PGraphicsOpenGL.java
index 5c1985cf2..d87730ad2 100644
--- a/core/src/processing/opengl/PGraphicsOpenGL.java
+++ b/core/src/processing/opengl/PGraphicsOpenGL.java
@@ -5629,6 +5629,29 @@ public class PGraphicsOpenGL extends PGraphics {
   }
 
 
+  //////////////////////////////////////////////////////////////
+
+  // SAVE
+
+
+  @Override
+  public boolean save(String filename) {
+
+    // Act as opaque surface for the purposes of saving.
+    // This is a hack, primary surface is supposed to be
+    // opaque by default.
+    if (primarySurface) {
+      int prevFormat = format;
+      format = RGB;
+      boolean result = super.save(filename);
+      format = prevFormat;
+      return result;
+    }
+
+    return super.save(filename);
+  }
+
+
   //////////////////////////////////////////////////////////////
 
   // LOAD/UPDATE TEXTURE