perf: add a few more DX8 effects to mat_reducefillrate

despite being a less efficient renderer, DX8 is still used for
performance reasons due to its lower quality settings.
we can continue to provide these lower quality settings
with the much more robust and efficient DX9 renderer,
which will benefit the playerbase and game.

Author: mastercoms

src/engine/gl_warp.cpp

@@ -106,7 +106,7 @@ bool R_LoadNamedSkys( const char *skyname )
 	bool		success = true;
 	const char	*skyboxsuffix[ 6 ] = { "rt", "bk", "lf", "ft", "up", "dn" };
 
-	bool bUseDx8Skyboxes = ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 );
+	bool bUseDx8Skyboxes = ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 || g_pMaterialSystemHardwareConfig->PreferReducedFillrate() );
 	for ( int i = 0; i < 6; i++ )
 	{
 		skies[i] = NULL;

src/game/client/tf/c_tf_player.cpp

@@ -7371,15 +7371,15 @@ int C_TFPlayer::DrawModel( int flags )
 	// Don't draw the model at all if we're fully invisible
 	if ( GetEffectiveInvisibilityLevel() >= 1.0f )
 	{
-		if ( m_hHalloweenBombHat && ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 ) && !m_hHalloweenBombHat->IsEffectActive( EF_NODRAW ) )
+		if ( m_hHalloweenBombHat && ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 || g_pMaterialSystemHardwareConfig->PreferReducedFillrate() ) && !m_hHalloweenBombHat->IsEffectActive( EF_NODRAW ) )
 		{
 			m_hHalloweenBombHat->SetEffects( EF_NODRAW );
 		}
 		return 0;
 	}
 	else
 	{
-		if ( m_hHalloweenBombHat && ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 ) && m_hHalloweenBombHat->IsEffectActive( EF_NODRAW ) )
+		if ( m_hHalloweenBombHat && ( g_pMaterialSystemHardwareConfig->GetDXSupportLevel() < 90 || g_pMaterialSystemHardwareConfig->PreferReducedFillrate() ) && m_hHalloweenBombHat->IsEffectActive( EF_NODRAW ) )
 		{
 			m_hHalloweenBombHat->RemoveEffects( EF_NODRAW );
 		}