Initial revision

source/blender/render/intern/include/shadowBuffer.h

@@ -0,0 +1,79 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+#ifndef SHADOWBUFFER_H
+#define SHADOWBUFFER_H
+
+#ifdef __cplusplus
+extern "C" { 
+#endif
+
+#ifndef RE_SHADOWBUFFERHANDLE
+#define RE_SHADOWBUFFERHANDLE
+#define RE_DECLARE_HANDLE(name) typedef struct name##__ { int unused; } *name
+RE_DECLARE_HANDLE(RE_ShadowBufferHandle);
+#endif
+	
+	struct ShadBuf;
+	struct LampRen;
+	
+/**
+ * Calculates shadowbuffers for a vector of shadow-giving lamps
+ * @param lar The vector of lamps
+ * @returns a handle to the buffer
+ */
+	extern void RE_buildShadowBuffer(RE_ShadowBufferHandle dsbh,
+									 struct LampRen *lar);
+	
+/**
+ * Determines the shadow factor for a face and lamp. There is some
+ * communication with global variables here? Should be made explicit...
+ * @param shadres The RGB shadow factors: 1.0 for no shadow, 0.0 for complete
+ *                shadow. There must be a float[3] to write the result to.
+ * @param shb The shadowbuffer to find the shadow factor in.
+ * @param inp The inproduct between viewvector and ?
+ *
+ */
+	void RE_testshadowbuf(RE_ShadowBufferHandle dsbh,
+						  struct ShadBuf* shbp,
+						  float inp,
+						  float* shadres);	
+
+/**
+ * Determines a shadow factor for halo-shadows.
+ */
+	
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SHADOWBUFFER_H */