From a41de3a60dc71932e4f1b9e3d6ab297fda5a0be8 Mon Sep 17 00:00:00 2001
From: Brad Davis <bdavis@saintandreas.org>
Date: Mon, 23 May 2016 15:46:47 -0700
Subject: [PATCH] Making GL 4.5 enabled by default, adding logging

---
 libraries/gpu-gl/src/gpu/gl/GLBackend.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libraries/gpu-gl/src/gpu/gl/GLBackend.cpp b/libraries/gpu-gl/src/gpu/gl/GLBackend.cpp
index 32e063a4c6..60641c122d 100644
--- a/libraries/gpu-gl/src/gpu/gl/GLBackend.cpp
+++ b/libraries/gpu-gl/src/gpu/gl/GLBackend.cpp
@@ -32,17 +32,19 @@
 using namespace gpu;
 using namespace gpu::gl;
 
-static const QString DEBUG_FLAG("HIFI_ENABLE_OPENGL_45");
-bool enableOpenGL45 = QProcessEnvironment::systemEnvironment().contains(DEBUG_FLAG);
+static const QString DEBUG_FLAG("HIFI_DISABLE_OPENGL_45");
+bool disableOpenGL45 = QProcessEnvironment::systemEnvironment().contains(DEBUG_FLAG);
 
 Backend* GLBackend::createBackend() {
     // FIXME provide a mechanism to override the backend for testing
     // Where the gpuContext is initialized and where the TRUE Backend is created and assigned
     auto version = QOpenGLContextWrapper::currentContextVersion();
     GLBackend* result; 
-    if (enableOpenGL45 && version >= 0x0405) {
+    if (!disableOpenGL45 && version >= 0x0405) {
+        qDebug() << "OpenGL 4.5 detected";
         result = new gpu::gl45::GL45Backend();
     } else {
+        qDebug() << "OpenGL 4.5 not detected / enabled, using compatibility backend";
         result = new gpu::gl41::GL41Backend();
     }
     result->initInput();