add prefs: ForceMipMaps, AnisotropicFiltering

stepmania/src/PrefsManager.cpp

@@ -226,7 +226,8 @@ void PrefsManager::Init()
 	m_bHideDefaultNoteSkin = false;
 	m_iMaxHighScoresPerList = 10;
 	m_fPadStickSeconds = 0;
-	m_bHalveTextureHeight = false;
+	m_bForceMipMaps = false;
+	m_bAnisotropicFiltering = false;
 	g_bAutoRestart = false;
 	m_bSignProfileData = false;
 
@@ -521,7 +522,8 @@ void PrefsManager::ReadPrefsFromFile( CString sIni )
 	ini.GetValue( "Options", "HideDefaultNoteSkin",				m_bHideDefaultNoteSkin );
 	ini.GetValue( "Options", "MaxHighScoresPerList",			m_iMaxHighScoresPerList );
 	ini.GetValue( "Options", "PadStickSeconds",					m_fPadStickSeconds );
-	ini.GetValue( "Options", "HalveTextureHeight",				m_bHalveTextureHeight );
+	ini.GetValue( "Options", "ForceMipMaps",					m_bForceMipMaps );
+	ini.GetValue( "Options", "AnisotropicFiltering",			m_bAnisotropicFiltering );
 	ini.GetValue( "Options", "AutoRestart",						g_bAutoRestart );
 	ini.GetValue( "Options", "SignProfileData",					m_bSignProfileData );
 
@@ -742,7 +744,8 @@ void PrefsManager::SaveGlobalPrefsToDisk() const
 	ini.SetValue( "Options", "HideDefaultNoteSkin",				m_bHideDefaultNoteSkin );
 	ini.SetValue( "Options", "MaxHighScoresPerList",			m_iMaxHighScoresPerList );
 	ini.SetValue( "Options", "PadStickSeconds",					m_fPadStickSeconds );
-	ini.SetValue( "Options", "HalveTextureHeight",				m_bHalveTextureHeight );
+	ini.SetValue( "Options", "ForceMipMaps",					m_bForceMipMaps );
+	ini.SetValue( "Options", "AnisotropicFiltering",			m_bAnisotropicFiltering );
 	ini.SetValue( "Options", "AutoRestart",						g_bAutoRestart );
 	ini.SetValue( "Options", "SignProfileData",					m_bSignProfileData );
 

stepmania/src/PrefsManager.h

@@ -201,10 +201,10 @@ public:
 	// after pressed.
 	float			m_fPadStickSeconds;
 
-	// For 8:3 displays (640x240 arcade monitors), every odd line of texels
-	// doesn't get drawn.  This makes text look really ugly.  So, squash all
-	// textures to half height to match the aspect ratio of the display.
-	bool			m_bHalveTextureHeight;
+	// Useful for non 4:3 displays and resolutions < 640x480 where texels don't
+	// map directly to pixels.
+	bool			m_bForceMipMaps;
+	bool			m_bAnisotropicFiltering;	// has no effect without mipmaps on
 
 	// If true, then signatures created when writing profile data 
 	// and verified when reading profile data.  Leave this false if 

stepmania/src/RageBitmapTexture.cpp

@@ -119,6 +119,9 @@ void RageBitmapTexture::Create()
 	if( actualID.iGrayscaleBits != -1 && img->format->BitsPerPixel == 8 )
 		actualID.iGrayscaleBits = -1;
 
+	if( PREFSMAN->m_bForceMipMaps )
+		actualID.bMipMaps = true;
+
 	/* Cap the max texture size to the hardware max. */
 	actualID.iMaxSize = min( actualID.iMaxSize, DISPLAY->GetMaxTextureSize() );
 
@@ -130,9 +133,6 @@ void RageBitmapTexture::Create()
 	m_iImageWidth = min( m_iSourceWidth, actualID.iMaxSize );
 	m_iImageHeight = min( m_iSourceHeight, actualID.iMaxSize );
 
-	if( PREFSMAN->m_bHalveTextureHeight )
-		m_iImageHeight /= 2;
-
 	/* Texture dimensions need to be a power of two; jump to the next. */
 	m_iTextureWidth = power_of_two(m_iImageWidth);
 	m_iTextureHeight = power_of_two(m_iImageHeight);

stepmania/src/RageDisplay.h

@@ -108,6 +108,7 @@ public:
 			bool vsync_,
 			bool interlaced_,
 			bool bSmoothLines_,
+			bool bAnisotropicFiltering_,
 			CString sWindowTitle_,
 			CString sIconFile_
 #ifdef _XBOX
@@ -123,6 +124,7 @@ public:
 			vsync = vsync_;
 			interlaced = interlaced_;
 			bSmoothLines = bSmoothLines_;
+			bAnisotropicFiltering = bAnisotropicFiltering_;
 			sWindowTitle = sWindowTitle_;
 			sIconFile = sIconFile_;
 #ifdef _XBOX
@@ -138,6 +140,7 @@ public:
 		int rate;
 		bool vsync;
 		bool bSmoothLines;
+		bool bAnisotropicFiltering;
 		bool interlaced;
 #ifdef _XBOX
 		bool PAL;

stepmania/src/RageDisplay_OGL.cpp

@@ -1678,6 +1678,15 @@ unsigned RageDisplay_OGL::CreateTexture(
 	glBindTexture( GL_TEXTURE_2D, uTexHandle );
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, bGenerateMipMaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
+
+	if( wind->GetVideoModeParams().bAnisotropicFiltering &&
+		HasExtension("GL_EXT_texture_filter_anisotropic") )
+	{
+		GLfloat largest_supported_anisotropy;
+		glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &largest_supported_anisotropy);
+		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, largest_supported_anisotropy);
+	}
+
 	SetTextureWrapping( false );
 
 	glPixelStorei(GL_UNPACK_ROW_LENGTH, img->pitch / img->format->BytesPerPixel);

stepmania/src/StepMania.cpp

@@ -115,6 +115,7 @@ static RageDisplay::VideoModeParams GetCurVideoModeParams()
 			PREFSMAN->m_bVsync,
 			PREFSMAN->m_bInterlaced,
 			PREFSMAN->m_bSmoothLines,
+			PREFSMAN->m_bAnisotropicFiltering,
 			THEME->GetMetric("Common","WindowTitle"),
 			THEME->GetPathToG("Common window icon")
 #ifdef _XBOX