From 8c2f7880690cd9c21a2c50358155877f0c301d40 Mon Sep 17 00:00:00 2001
From: Emux <devemux86@gmail.com>
Date: Wed, 23 Jan 2019 10:20:37 +0200
Subject: [PATCH] GL debug improvements #626

---
 vtm/src/org/oscim/renderer/GLUtils.java     | 19 +++++++++++++++++++
 vtm/src/org/oscim/renderer/MapRenderer.java |  2 +-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/vtm/src/org/oscim/renderer/GLUtils.java b/vtm/src/org/oscim/renderer/GLUtils.java
index 5eb0c2bc..40362db6 100644
--- a/vtm/src/org/oscim/renderer/GLUtils.java
+++ b/vtm/src/org/oscim/renderer/GLUtils.java
@@ -177,6 +177,25 @@ public class GLUtils {
         return errors;
     }
 
+    /**
+     * Check GL out of memory.
+     * See: https://www.khronos.org/opengl/wiki/OpenGL_Error
+     *
+     * @param op the operation which should be debugged
+     * @return true if out of memory
+     */
+    public static boolean checkGlOutOfMemory(String op) {
+        int error; // GL.NO_ERROR
+        boolean oom = false;
+        while ((error = gl.getError()) != GL.NO_ERROR) {
+            log.error(op + ": \tglError " + getGlErrorString(error) + " (" + error + ")");
+            // throw new RuntimeException(op + ": glError " + error);
+            if (error == GL.OUT_OF_MEMORY)
+                oom = true;
+        }
+        return oom;
+    }
+
     /**
      * @param error the error code of OpenGL
      * @return the error code as string
diff --git a/vtm/src/org/oscim/renderer/MapRenderer.java b/vtm/src/org/oscim/renderer/MapRenderer.java
index eea59fb9..a1e0460f 100644
--- a/vtm/src/org/oscim/renderer/MapRenderer.java
+++ b/vtm/src/org/oscim/renderer/MapRenderer.java
@@ -160,7 +160,7 @@ public class MapRenderer {
                 GLUtils.checkGlError(renderer.getClass().getName());
         }
 
-        if (GLUtils.checkGlErrors(getClass().getName() + ": finish").contains(GL.OUT_OF_MEMORY)) {
+        if (GLUtils.checkGlOutOfMemory(getClass().getName() + ": finish")) {
             BufferObject.checkBufferUsage(true);
             // FIXME also throw out some textures etc
         }