1 files changed, 58 insertions, 0 deletions
diff --git a/src/v_patch.h b/src/v_patch.h
new file mode 100644
index 00000000..257603f6
--- /dev/null
+++ b/src/v_patch.h
@@ -0,0 +1,58 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 Simon Howard
+//
+// 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.
+//
+// DESCRIPTION:
+//      Refresh/rendering module, shared data struct definitions.
+//
+//-----------------------------------------------------------------------------
+
+
+#ifndef V_PATCH_H
+#define V_PATCH_H
+
+// Patches.
+// A patch holds one or more columns.
+// Patches are used for sprites and all masked pictures,
+// and we compose textures from the TEXTURE1/2 lists
+// of patches.
+
+typedef struct 
+{ 
+    short		width;		// bounding box size 
+    short		height; 
+    short		leftoffset;	// pixels to the left of origin 
+    short		topoffset;	// pixels below the origin 
+    int			columnofs[8];	// only [width] used
+    // the [0] is &columnofs[width] 
+} PACKEDATTR patch_t;
+
+// posts are runs of non masked source pixels
+typedef struct
+{
+    byte		topdelta;	// -1 is the last post in a column
+    byte		length; 	// length data bytes follows
+} PACKEDATTR post_t;
+
+// column_t is a list of 0 or more post_t, (byte)-1 terminated
+typedef post_t	column_t;
+
+#endif 
+