From a57637e1958eec0f359440b1543bfd14998274f3 Mon Sep 17 00:00:00 2001
From: don bright <hugh.m.bright@gmail.com>
Date: Wed, 8 Aug 2012 20:42:39 -0500
Subject: check if running under wine, then run swapbuffers() if so


diff --git a/src/glview.cc b/src/glview.cc
index 624b266..b8c3015 100644
--- a/src/glview.cc
+++ b/src/glview.cc
@@ -374,6 +374,19 @@ void GLView::setupOrtho(double distance, bool offset)
 	gluLookAt(0.0, -viewer_distance, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
 }
 
+static bool running_under_wine()
+{
+	bool result=false;
+#ifdef _WIN32
+#include <windows.h>
+	HMODULE hntdll = GetModuleHandle(L"ntdll.dll");	// see Wine FAQ
+	if (hntdll)
+		if ( (void *)GetProcAddress(hntdll, "wine_get_version") )
+			result=true;
+#endif
+	return result;
+}
+
 void GLView::paintGL()
 {
 	glEnable(GL_LIGHTING);
@@ -528,6 +541,11 @@ void GLView::paintGL()
 			fmodf(360 - object_rot_x + 90, 360), fmodf(360 - object_rot_y, 360), fmodf(360 - object_rot_z, 360), viewer_distance);
 		statusLabel->setText(msg);
 	}
+
+	if (running_under_wine()) {
+		// wine+qglwidget autobufferswap not reliable. issue 160.
+		swapBuffers();
+	}
 }
 
 void GLView::keyPressEvent(QKeyEvent *event)
diff --git a/src/mainwin.cc b/src/mainwin.cc
index 0d3c148..3fdee6b 100644
--- a/src/mainwin.cc
+++ b/src/mainwin.cc
@@ -1173,8 +1173,6 @@ void MainWindow::actionCompile()
 #endif
 	}
 
-	glview->updateGL(); // issue 160
-
 	if (viewActionAnimate->isChecked() && e_dump->isChecked()) {
 		QImage img = this->glview->grabFrameBuffer();
 		QString filename;
-- 
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