From e17ba1c143da1efc0ad0d36c8e33ebd774f01b76 Mon Sep 17 00:00:00 2001
From: Gregory Hainaut <gregory.hainaut@gmail.com>
Date: Fri, 1 May 2015 15:01:08 +0200
Subject: [PATCH] gsdx ogl: disable logz when ARB_clip_control is supported

Basically any recent drivers but Catalyst...
---
 plugins/GSdx/GSTextureFXOGL.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/plugins/GSdx/GSTextureFXOGL.cpp b/plugins/GSdx/GSTextureFXOGL.cpp
index 559a99be0a..a1acc9a6d7 100644
--- a/plugins/GSdx/GSTextureFXOGL.cpp
+++ b/plugins/GSdx/GSTextureFXOGL.cpp
@@ -42,6 +42,14 @@ void GSDeviceOGL::CreateTextureFX()
 	m_gs = CompileGS();
 
 	int logz = theApp.GetConfig("logz", 1);
+#ifndef ENABLE_OGL_DEBUG
+	if (GLLoader::found_GL_ARB_clip_control && logz) {
+		fprintf(stderr, "Your driver supports advance depth. Logz will be disabled\n");
+		logz = 0;
+	} else if (!GLLoader::found_GL_ARB_clip_control && !logz) {
+		fprintf(stderr, "Your driver DOESN'T support advance depth (GL_ARB_clip_control)\n It is higly recommmended to enable logz\n");
+	}
+#endif
 	for (uint32 key = 0; key < VSSelector::size(); key++) {
 		// wildhack is only useful if both TME and FST are enabled.
 		VSSelector sel(key);