From 9e6f3ac109b5cd7736122d1bdf83ed38b9d739c6 Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@google.com>
Date: Thu, 20 Jun 2013 16:31:35 -0700
Subject: [PATCH] Add debugging logs for GPU pixel buffers

Change-Id: I7edb04dd30ee6fd823099e72788169cc185e70f2
---
 libs/hwui/PixelBuffer.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/libs/hwui/PixelBuffer.cpp b/libs/hwui/PixelBuffer.cpp
index 29f8756820e33..74b628ab4214d 100644
--- a/libs/hwui/PixelBuffer.cpp
+++ b/libs/hwui/PixelBuffer.cpp
@@ -19,6 +19,7 @@
 #include <utils/Log.h>
 
 #include "Caches.h"
+#include "Debug.h"
 #include "Extensions.h"
 #include "PixelBuffer.h"
 #include "Properties.h"
@@ -113,6 +114,14 @@ uint8_t* GpuPixelBuffer::map(AccessMode mode) {
     if (mAccessMode == kAccessMode_None) {
         mCaches.bindPixelBuffer(mBuffer);
         mMappedPointer = (uint8_t*) glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, getSize(), mode);
+#if DEBUG_OPENGL
+        if (!mMappedPointer) {
+            GLenum status = GL_NO_ERROR;
+            while ((status = glGetError()) != GL_NO_ERROR) {
+                ALOGE("Could not map GPU pixel buffer: 0x%x", status);
+            }
+        }
+#endif
         mAccessMode = mode;
     }