3 <TITLE>Mesa Introduction</TITLE>
5 <link rel="stylesheet" type="text/css" href="mesa.css"></head>
12 Mesa is an open-source implementation of the
13 <a href="http://www.opengl.org/" target="_parent">OpenGL</a> specification -
14 a system for rendering interactive 3D graphics.
18 A variety of device drivers allows Mesa to be used in many different
19 environments ranging from software emulation to complete hardware acceleration
24 Mesa ties into several other open-source projects: the
25 <a href="http://dri.sf.net/" target="_parent">Direct Rendering Infrastructure</a>
26 and <a href="http://x.org" target="_parent">X.org</a> to provide OpenGL
27 support to users of X on Linux, FreeBSD and other operating systems.
32 <H1>Project History</H1>
35 The Mesa project was originally started by Brian Paul.
36 Here's a short history of the project.
40 August, 1993: I begin working on Mesa in my spare time. The project
41 has no name at that point. I was simply interested in writing a simple
42 3D graphics library that used the then-new OpenGL API. I was partially
43 inspired by the <em>VOGL</em> library which emulated a subset of IRIS GL.
44 I had been programming with IRIS GL since 1991.
48 November 1994: I contact SGI to ask permission to distribute my OpenGL-like
49 graphics library on the internet. SGI was generally receptive to the
50 idea and after negotiations with SGI's legal department, I get permission
55 February 1995: Mesa 1.0 is released on the internet. I expected that
56 a few people would be interested in it, but not thousands.
57 I was soon receiving patches, new features and thank-you notes on a
58 daily basis. That encouraged me to continue working on Mesa. The
59 name Mesa just popped into my head one day. SGI had asked me not to use
60 the terms <em>"Open"</em> or <em>"GL"</em> in the project name and I didn't
61 want to make up a new acronym. Later, I heard of the Mesa programming
62 language and the Mesa spreadsheet for NeXTStep.
66 In the early days, OpenGL wasn't available on too many systems.
67 It even took a while for SGI to support it across their product line.
68 Mesa filled a big hole during that time.
69 For a lot of people, Mesa was their first introduction to OpenGL.
70 I think SGI recognized that Mesa actually helped to promote
71 the OpenGL API, so they didn't feel threatened by the project.
76 1995-1996: I continue working on Mesa both during my spare time and during
77 my work hours at the Space Science and Engineering Center at the University
78 of Wisconsin in Madison. My supervisor, Bill Hibbard, lets me do this because
79 Mesa is now being using for the <a href="http://www.ssec.wisc.edu/%7Ebillh/vis.html" target="_parent">Vis5D</a> project.
81 October 1996: Mesa 2.0 is released. It implements the OpenGL 1.1 specification.
85 March 1997: Mesa 2.2 is released. It supports the new 3dfx Voodoo graphics
86 card via the Glide library. It's the first really popular hardware OpenGL
87 implementation for Linux.
91 September 1998: Mesa 3.0 is released. It's the first publicly-available
92 implementation of the OpenGL 1.2 API.
96 March 1999: I attend my first OpenGL ARB meeting. I contribute to the
97 development of several official OpenGL extensions over the years.
101 September 1999: I'm hired by Precision Insight, Inc. Mesa is a key
102 component of 3D hardware acceleration in the new DRI project for XFree86.
103 Drivers for 3dfx, 3dLabs, Intel, Matrox and ATI hardware soon follow.
107 October 2001: Mesa 4.0 is released.
108 It implements the OpenGL 1.3 specification.
113 November 2001: I cofound <a href="http://www.tungstengraphics.com" target="_parent">
114 Tungsten Graphics, Inc.</a> with Keith Whitwell, Jens Owen, David Dawes and
116 I continue to develop Mesa as part of my resposibilities with Tungsten
117 Graphics and as a spare-time project.
121 November 2002: Mesa 5.0 is released.
122 It implements the OpenGL 1.4 specification.
126 January 2003: Mesa 6.0 is released. It implements the OpenGL 1.5
127 specification as well as the GL_ARB_vertex_program and
128 GL_ARB_fragment_program extensions.
133 Ongoing: Mesa is used as the core of many hardware OpenGL drivers for
134 the XFree86 X.org X servers within the
135 <A href="http://dri.freedesktop.org/" target="_parent">DRI project</A>.
136 I continue to enhance Mesa with new extensions and features.
141 <H1>Major Versions</H1>
144 This is a summary of the major versions of Mesa. Note that Mesa's major
145 version number tracks OpenGL's minor version number (+1).
146 Work is underway to implement the OpenGL 2.0 specification.
150 <H2>Version 6.x features</H2>
152 Version 6.x of Mesa implements the OpenGL 1.5 API with the following
153 extensions incorporated as standard features:
156 <li>GL_ARB_occlusion_query
157 <li>GL_ARB_vertex_buffer_object
158 <li>GL_EXT_shadow_funcs
161 Also note that several OpenGL tokens were renamed in OpenGL 1.5
162 for the sake of consistency.
163 The old tokens are still available.
167 ------------------------------------------------------------
168 GL_FOG_COORD_SRC GL_FOG_COORDINATE_SOURCE
169 GL_FOG_COORD GL_FOG_COORDINATE
170 GL_CURRENT_FOG_COORD GL_CURRENT_FOG_COORDINATE
171 GL_FOG_COORD_ARRAY_TYPE GL_FOG_COORDINATE_ARRAY_TYPE
172 GL_FOG_COORD_ARRAY_STRIDE GL_FOG_COORDINATE_ARRAY_STRIDE
173 GL_FOG_COORD_ARRAY_POINTER GL_FOG_COORDINATE_ARRAY_POINTER
174 GL_FOG_COORD_ARRAY GL_FOG_COORDINATE_ARRAY
175 GL_SRC0_RGB GL_SOURCE0_RGB
176 GL_SRC1_RGB GL_SOURCE1_RGB
177 GL_SRC2_RGB GL_SOURCE2_RGB
178 GL_SRC0_ALPHA GL_SOURCE0_ALPHA
179 GL_SRC1_ALPHA GL_SOURCE1_ALPHA
180 GL_SRC2_ALPHA GL_SOURCE2_ALPHA
184 <a href="http://www.opengl.org/documentation/spec.html" target="_parent">
185 OpenGL specification</a> for more details.
190 <H2>Version 5.x features</H2>
192 Version 5.x of Mesa implements the OpenGL 1.4 API with the following
193 extensions incorporated as standard features:
196 <li>GL_ARB_depth_texture
198 <li>GL_ARB_texture_env_crossbar
199 <li>GL_ARB_texture_mirror_repeat
200 <li>GL_ARB_window_pos
201 <li>GL_EXT_blend_color
202 <li>GL_EXT_blend_func_separate
203 <li>GL_EXT_blend_logic_op
204 <li>GL_EXT_blend_minmax
205 <li>GL_EXT_blend_subtract
207 <li>GL_EXT_multi_draw_arrays
208 <li>GL_EXT_point_parameters
209 <li>GL_EXT_secondary_color
210 <li>GL_EXT_stencil_wrap
211 <li>GL_EXT_texture_lod_bias (plus, a per-texture LOD bias parameter)
212 <li>GL_SGIS_generate_mipmap
216 <H2>Version 4.x features</H2>
219 Version 4.x of Mesa implements the OpenGL 1.3 API with the following
220 extensions incorporated as standard features:
224 <li>GL_ARB_multisample
225 <li>GL_ARB_multitexture
226 <li>GL_ARB_texture_border_clamp
227 <li>GL_ARB_texture_compression
228 <li>GL_ARB_texture_cube_map
229 <li>GL_ARB_texture_env_add
230 <li>GL_ARB_texture_env_combine
231 <li>GL_ARB_texture_env_dot3
232 <li>GL_ARB_transpose_matrix
235 <H2>Version 3.x features</H2>
238 Version 3.x of Mesa implements the OpenGL 1.2 API with the following
242 <li>BGR, BGRA and packed pixel formats
243 <li>New texture border clamp mode
244 <li>glDrawRangeElements()
245 <li>standard 3-D texturing
246 <li>advanced MIPMAP control
247 <li>separate specular color interpolation
251 <H2>Version 2.x features</H2>
253 Version 2.x of Mesa implements the OpenGL 1.1 API with the following
259 <li>glAreTexturesResident
263 <li>glCopyTexSubImage1D
264 <li>glCopyTexSubImage2D
268 <li>glPrioritizeTextures
277 <li>glEdgeFlagPointer
279 <li>glInterleavedArrays
281 <li>glTexCoordPointer
284 <li>Client state management:
286 <li>glDisableClientState
287 <li>glEnableClientState
288 <li>glPopClientAttrib
289 <li>glPushClientAttrib