
 Copyright (c) 1998,1999 Kenneth Albanowski. All rights reserved.
 Copyright (c) 2000 Ilya Zakharevich. All rights reserved.
 Copyright (c) 2007 Bob Free. All rights reserved.
 This program is free software; you can redistribute it and/or
 modify it under the same terms as Perl itself. 

This module provides access to most of the OpenGL 1.0, 1.1, and 1.2 APIs.
Some amount of GLU is supported (I'm not quite sure what version it works
out to), and GLUT should be completely supported up to API version 3. A
small portion of GLX and X11 is supported, as an alternative to GLUT.

Compatibility notes with OpenGL 0.4:

	The OpenGL 0.4 library, written by Stan Melax, contains more support for
	some SGI specific functions then 0.5, so you may wish to stay with 0.4
	on an SGI system. For other machines, 0.5 should greatly improve
	compatibility (compiling where 0.4 wouldn't have).
	
	Code-level compatibility with OpenGL 0.4 is available if you refer to
	OpenGL simply via 'use OpenGL;'. If you request specific packages (such
	as 'use OpenGL qw(glfunctions glconstants glutfunctions);'), you'll get
	0.5 specific support.  For more information, please read the OpenGL
	manual, available in OpenGL.pod.
	
	Portions of this module that directly derive from Stan's code are marked
	with "Melax" comments, and his copyright is described in the COPYRIGHT
	file.

As this library is a simple binding between Perl and any library that
complies with the OpenGL API, this module should interoperate seamlessly
with any other modules that make use of OpenGL directly or (through another
library) indirectly.

For build instructions, please see the INSTALL file.

GLUT libs (or compatible) must be installed in order to complete tests and install this OpenGL module.
You can find GLUT at http://www.opengl.org/resources/libraries/glut

For an incomplete implementation of GLUT in Perl, please see
Gtk::GLArea::Glut, within the Gtk-Perl module.

For a brief description of what functions are supported, please read
"SUPPORTS", and better yet read the two sample files, test.pl and
isosurf.pl.

As of May 1999, I doubt I will be able to provide any significant support
users of this module.

Thanks for help developing this module goes to Stan Melax, Cass Everitt,
Alligator Descarte, and probably others that I've forgotten.

Happy Hacking,
Kenneth Albanowski <kjahds@kjahds.com>



As of April 13, 2007, Bob Free has assumed primary ownership of this module.

DOCUMENTATION AND INFO:

http://graphcomp.com/opengl

DISTRIBUTIONS:

CPAN: cpan.org

SVN: svn checkout svn://graphcomp.org/cpan/OpenGL OpenGL

TARBALL: http://graphcomp.com/opengl/OpenGL-0.55.tar.gz

ZIP: http://graphcomp.com/opengl/OpenGL-0.55.zip

PPM 5.6.x: ppm install http://graphcomp.com/opengl/ppm56/OpenGL.ppd

PPM 5.8.x: ppm install http://graphcomp.com/opengl/ppm58/OpenGL.ppd

Enjoy!
Bob Free <bfree@graphcomp.com>



Changes:

0.51:	Portability enhancement (X and OS/2 PM), bug fixes, examples enhanced.
	_have_glp() should be used instead of _have_glx to test for
	  presence of glp* functions.
	Remap OpenGL 1.1 functions into GL_EXT_vertex_array interface
	if needed.

0.52:	More of the portability, bug fixes, and examples.
	New option -steal for glpOpenWindow() to allow drawing into an
	  existing window (no "Visual" syncronization yet).
	GL_EXT_vertex_array done on the level of cpp.

0.53:	Correct vertex_array detection in isosample.pl.
	Add more vertex_array constants (and move the definition earlier).
	Exchange (default) arguments for glp*: move display after window
	  (should not break old stuff, since there was/is no way to query
	   the display and window).
	New function $d = glpDisplay() (croaks on failure).
	Make glpOpenWindow() return the window handle.
	New functions with signatures
 void glpMoveResizeWindow(int x, int y, unsigned int width, unsigned int height, Window w, Display* display);
 void glpMoveWindow(int x, int y, Window w, Display* display);
 void glpResizeWindow(unsigned int width, unsigned int height, Window w, Display* display);
	  (w and display are optional).

0.54:	Martien Verbruggen fixed another Mesa limitation.
	#ifdef out unglob'ing: symbol not found on Solaris...

0.55:	Bob Free <bfree@graphcomp.com>
	Added OpenGL::Array->new_list
	Added OpenGL::Array->elements
	Added macro abstraction for wgl extensions
	Implemented GL_ARB_depth_texture
	Implemented GL_ARB_draw_buffers
	Implemented GL_ARB_fragment_program
	Implemented GL_ARB_fragment_program_shadow
	Implemented GL_ARB_half_float_pixel
	Implemented GL_ARB_multitexture
	Implemented GL_ARB_pixel_buffer_object
	Implemented GL_ARB_point_sprite
	Implemented GL_ARB_shadow
	Implemented GL_ARB_texture_border_clamp
	Implemented GL_ARB_texture_cube_map
	Implemented GL_ARB_texture_env_add
	Implemented GL_ARB_texture_float
	Implemented GL_ARB_texture_mirrored_repeat
	Implemented GL_ARB_texture_non_power_of_two
	Implemented GL_ARB_texture_rectangle
	Implemented GL_ARB_vertex_buffer_object
	Implemented GL_ARB_vertex_program
	Implemented GL_ATI_texture_float
	Implemented GL_ATI_texture_mirror_once
	Implemented GL_EXT_bgra
	Implemented GL_EXT_copy_texture
	Implemented GL_EXT_framebuffer_object
	Implemented GL_EXT_packed_pixels
	Implemented GL_EXT_pixel_buffer_object
	Implemented GL_EXT_rescale_normal
	Implemented GL_EXT_separate_specular_color
	Implemented GL_EXT_shadow_funcs
	Implemented GL_EXT_stencil_wrap
	Implemented GL_EXT_subtexture
	Implemented GL_EXT_textureD3
	Implemented GL_EXT_texture_env_dot3
	Implemented GL_EXT_texture_filter_anisotropic
	Implemented GL_EXT_texture_lod_bias
	implemented GL_EXT_texture_mirror_clamp
	implemented GL_EXT_vertex_array
	Implemented GL_HP_occlusion_test
	Implemented GL_IBM_rasterpos_clip
	Implemented GL_NV_blend_square
	Implemented GL_NV_copy_depth_to_color
	Implemented GL_NV_depth_clamp
	Implemented GL_NV_fog_distance
	Implemented GL_NV_fragment_program2
	Implemented GL_NV_fragment_program_option
	Implemented GL_NV_light_max_exponent
	Implemented GL_NV_packed_depth_stencil
	Implemented GL_NV_texgen_reflection
	Implemented GL_NV_texture_expand_normal
	Implemented GL_NV_texture_rectangle
	Implemented GL_NV_vertex_program2_option
	Implemented GL_NV_vertex_program3
	Implemented GL_S3_s3tc
	Implemented GL_SGIS_generate_mipmap
	Implemented GL_SGIS_texture_lod
	Implemented GL_SGIX_depth_texture
	Implemented GL_SGIX_shadow
	Implemented GL_SUN_slice_accum
	Added glDrawRangeElements_p
	Added glColorPointer_p
	Added glEdgeFlagPointer_p
	Added glIndexPointer_p
	Added glNormalPointer_p
	Added glTexCoordPointer_p
	Added glVertexPointer_p
	Added 'include' folder for updated GL header files
	Added 'utils' folder for header processing scripts
	Added glversion utility to enhance Makefile.PL
	Fixed compiler warnings in gl_util.c and OpenGL.xs
	Fixed glPolygonOffsetEXT bias mapping
	Fixed glDrawRangeElements_s code
	Fixed glGetPointerv_c params pointer
	Moved obsolete/deprecated extensions
	Added $glext_implemented hashref of implemented GL extensions
	Added glpCheckExtension
	Updated test.pl

	Ilya Zakharevich
	Updated support for SunRay

	Sherm Pendley
	Added MacOSX support

	Nomura-san
	Helped add FreeBSD support
