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diff --git a/tests/glean/gl.cpp b/tests/glean/gl.cpp
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+// BEGIN_COPYRIGHT
+// 
+// Copyright (C) 1999  Allen Akin   All Rights Reserved.
+// 
+// Permission is hereby granted, free of charge, to any person
+// obtaining a copy of this software and associated documentation
+// files (the "Software"), to deal in the Software without
+// restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following
+// conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the
+// Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+// KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ALLEN AKIN BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+// 
+// END_COPYRIGHT
+
+
+
+
+// OpenGL utility routines for images
+
+#include "image.h"
+
+namespace GLEAN {
+
+
+///////////////////////////////////////////////////////////////////////////////
+// draw - draw image using glDrawPixels
+///////////////////////////////////////////////////////////////////////////////
+void
+Image::draw() {
+	glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
+	glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
+	glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+	glPixelStorei(GL_UNPACK_ALIGNMENT, alignment());
+	glDrawPixels(width(), height(), format(), type(), pixels());
+} // Image::draw
+
+///////////////////////////////////////////////////////////////////////////////
+// read - read image using glReadPixels
+///////////////////////////////////////////////////////////////////////////////
+void
+Image::read(GLint x, GLint y) {
+	glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE);
+	glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE);
+	glPixelStorei(GL_PACK_ROW_LENGTH, 0);
+	glPixelStorei(GL_PACK_SKIP_ROWS, 0);
+	glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+	glPixelStorei(GL_PACK_ALIGNMENT, alignment());
+	glReadPixels(x, y, width(), height(), format(), type(), pixels());
+} // Image::read
+
+///////////////////////////////////////////////////////////////////////////////
+// makeMipmaps - generate and load mipmaps for texturing
+///////////////////////////////////////////////////////////////////////////////
+void
+Image::makeMipmaps(GLenum internalFormat) {
+	glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
+	glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
+	glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+	glPixelStorei(GL_UNPACK_ALIGNMENT, alignment());
+	gluBuild2DMipmaps(GL_TEXTURE_2D, internalFormat, width(), height(),
+		format(), type(), pixels());
+} // Image::makeMipmaps
+
+}; // namespace GLEAN