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diff --git a/cinelerra-5.1/guicast/bctexture.h b/cinelerra-5.1/guicast/bctexture.h
new file mode 100644
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+++ b/cinelerra-5.1/guicast/bctexture.h
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * 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
+ * 
+ */
+
+#ifndef BCTEXTURE_H
+#define BCTEXTURE_H
+
+
+#include "vframe.inc"
+
+
+// Container for texture objects
+
+class BC_Texture
+{
+public:
+	BC_Texture(int w, int h, int colormodel);
+	~BC_Texture();
+
+	friend class VFrame;
+
+// Create a new texture if *texture if 0 
+// or update the existing texture if *texture is 
+// nonzero.  The created texture object is stored in *texture.
+// The texture parameters are stored in the texture manager.
+// The user must delete *texture when finished with it.
+// The texture is bound to the current texture unit and enabled.
+// Must be called from a synchronous opengl thread after enable_opengl.
+	static void new_texture(BC_Texture **texture,
+		int w, 
+		int h, 
+		int colormodel);
+
+// Bind the frame's texture to GL_TEXTURE_2D and enable it.
+// If a texture_unit is supplied, the texture unit is made active
+// and the commands are run in the right sequence to 
+// initialize it to our preferred specifications.
+// The texture unit initialization requires the texture to be bound.
+	void bind(int texture_unit = -1);
+
+// Calculate the power of 2 size for allocating textures
+	static int calculate_texture_size(int w, int *max = 0);
+	int get_texture_id();
+	int get_texture_w();
+	int get_texture_h();
+	int get_texture_components();
+	int get_window_id();
+
+private:
+	void clear_objects();
+
+// creates a new texture or updates an existing texture to work with the
+// current window.
+	void create_texture(int w, int h, int colormodel);
+
+
+	int window_id;
+	int texture_id;
+	int texture_w;
+	int texture_h;
+	int texture_components;
+	int colormodel;
+	int w;
+	int h;
+};
+
+
+#endif