From c068f22329d5cc722622a2183bbb22eef2093df7 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Mon, 24 Aug 2026 11:16:07 +0200
Subject: initial import

---
 src/parsec/ro_patch.cpp | 89 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/parsec/ro_patch.cpp

(limited to 'src/parsec/ro_patch.cpp')

diff --git a/src/parsec/ro_patch.cpp b/src/parsec/ro_patch.cpp
new file mode 100644
index 0000000..644ac66
--- /dev/null
+++ b/src/parsec/ro_patch.cpp
@@ -0,0 +1,89 @@
+/*
+ * PARSEC - Subsystem Patching Function
+ *
+ * $Author: uberlinuxguy $ - $Date: 2004/09/15 12:25:33 $
+ *
+ * Orginally written by:
+ *   Copyright (c) Markus Hadwiger     <msh@parsec.org>   1999
+ *   Copyright (c) Clemens Beer        <cbx@parsec.org>   2001
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */ 
+
+// C library
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// compilation flags/debug support
+#include "config.h"
+#include "debug.h"
+
+// general definitions
+#include "general.h"
+#include "objstruc.h"
+
+// global externals
+#include "globals.h"
+
+// patching headers
+#include "r_patch.h"
+
+// local module header
+#include "ro_patch.h"
+
+// proprietary module headers
+#include "ro_api.h"
+#include "ro_supp.h"
+
+
+
+// patch entire rendering subsystem -------------------------------------------
+//
+void R_PatchSubSystem()
+{
+	// invalidate on-board state
+
+	RO_InvalidateRasterizerState();
+	RO_InvalidateTextureMem();
+
+	// NOTE:
+	// this has to be done since state is not preserved when dynamically
+	// switching VID/DRAW/REND subsystems.
+}
+
+
+// invalidate texture in cache ------------------------------------------------
+//
+void R_InvalidateCachedTexture( TextureMap *tmap )
+{
+	// NOTE:
+	// if the supplied pointer is NULL the entire
+	// texture cache will be flushed.
+
+	if ( tmap != NULL ) {
+
+		// invalidate only one texture
+		RO_InvalidateCachedTexture( tmap );
+
+	} else {
+
+		// invalidate all textures
+		RO_InvalidateTextureMem();
+	}
+}
+
+
+
-- 
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