From 92504b10cc900e87ea75b96429fde3432f8ca9d0 Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Sun, 13 Nov 2005 18:55:30 +0000
Subject: [PATCH] LowLevelWindow_Win32::IsSoftwareRenderer

---
 .../src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp | 12 ++++++++++++
 .../src/arch/LowLevelWindow/LowLevelWindow_Win32.h   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
index 67e04a89fa..ae940368b9 100644
--- a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
+++ b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
@@ -5,6 +5,8 @@
 #include "RageUtil.h"
 #include "RageLog.h"
 
+#include <GL/gl.h>
+
 static PIXELFORMATDESCRIPTOR g_CurrentPixelFormat;
 static HGLRC g_HGLRC = NULL;
 
@@ -211,6 +213,16 @@ CString LowLevelWindow_Win32::TryVideoMode( VideoModeParams p, bool &bNewDeviceO
 	return CString();	// we set the video mode successfully
 }
 
+bool LowLevelWindow_Win32::IsSoftwareRenderer( CString &sError )
+{
+	if( strcmp((const char*)glGetString(GL_VENDOR),"Microsoft Corporation") &&
+		strcmp((const char*)glGetString(GL_RENDERER),"GDI Generic") )
+		return false;
+
+	sError = "OpenGL hardware acceleration is not available.";
+	return true;
+}
+
 void LowLevelWindow_Win32::SwapBuffers()
 {
 	::SwapBuffers( GraphicsWindow::GetHDC() );
diff --git a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.h b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.h
index 0a25443087..19ec71faf9 100644
--- a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.h
+++ b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.h
@@ -10,6 +10,7 @@ public:
 	~LowLevelWindow_Win32();
 	void *GetProcAddress( CString s );
 	CString TryVideoMode( VideoModeParams p, bool &bNewDeviceOut );
+	bool IsSoftwareRenderer( CString &sError );
 	void SwapBuffers();
 	void Update();