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.
132 June 2007: Mesa 7.0 is released, implementing the OpenGL 2.1 specification
133 and OpenGL Shading Language.
138 Ongoing: Mesa is used as the core of many hardware OpenGL drivers for
139 the XFree86 and X.org X servers within the
140 <A href="http://dri.freedesktop.org/" target="_parent">DRI project</A>.
141 I continue to enhance Mesa with new extensions and features.
146 <H1>Major Versions</H1>
149 This is a summary of the major versions of Mesa.
150 Mesa's major version number has been incremented whenever a new version
151 of the OpenGL specification is implemented.
155 <H2>Version 7.x features</H2>
157 Version 7.x of Mesa implements the OpenGL 2.1 API. The main feature
158 of OpenGL 2.x is the OpenGL Shading Language.
162 <H2>Version 6.x features</H2>
164 Version 6.x of Mesa implements the OpenGL 1.5 API with the following
165 extensions incorporated as standard features:
168 <li>GL_ARB_occlusion_query
169 <li>GL_ARB_vertex_buffer_object
170 <li>GL_EXT_shadow_funcs
173 Also note that several OpenGL tokens were renamed in OpenGL 1.5
174 for the sake of consistency.
175 The old tokens are still available.
179 ------------------------------------------------------------
180 GL_FOG_COORD_SRC GL_FOG_COORDINATE_SOURCE
181 GL_FOG_COORD GL_FOG_COORDINATE
182 GL_CURRENT_FOG_COORD GL_CURRENT_FOG_COORDINATE
183 GL_FOG_COORD_ARRAY_TYPE GL_FOG_COORDINATE_ARRAY_TYPE
184 GL_FOG_COORD_ARRAY_STRIDE GL_FOG_COORDINATE_ARRAY_STRIDE
185 GL_FOG_COORD_ARRAY_POINTER GL_FOG_COORDINATE_ARRAY_POINTER
186 GL_FOG_COORD_ARRAY GL_FOG_COORDINATE_ARRAY
187 GL_SRC0_RGB GL_SOURCE0_RGB
188 GL_SRC1_RGB GL_SOURCE1_RGB
189 GL_SRC2_RGB GL_SOURCE2_RGB
190 GL_SRC0_ALPHA GL_SOURCE0_ALPHA
191 GL_SRC1_ALPHA GL_SOURCE1_ALPHA
192 GL_SRC2_ALPHA GL_SOURCE2_ALPHA
196 <a href="http://www.opengl.org/documentation/spec.html" target="_parent">
197 OpenGL specification</a> for more details.
202 <H2>Version 5.x features</H2>
204 Version 5.x of Mesa implements the OpenGL 1.4 API with the following
205 extensions incorporated as standard features:
208 <li>GL_ARB_depth_texture
210 <li>GL_ARB_texture_env_crossbar
211 <li>GL_ARB_texture_mirror_repeat
212 <li>GL_ARB_window_pos
213 <li>GL_EXT_blend_color
214 <li>GL_EXT_blend_func_separate
215 <li>GL_EXT_blend_logic_op
216 <li>GL_EXT_blend_minmax
217 <li>GL_EXT_blend_subtract
219 <li>GL_EXT_multi_draw_arrays
220 <li>GL_EXT_point_parameters
221 <li>GL_EXT_secondary_color
222 <li>GL_EXT_stencil_wrap
223 <li>GL_EXT_texture_lod_bias (plus, a per-texture LOD bias parameter)
224 <li>GL_SGIS_generate_mipmap
228 <H2>Version 4.x features</H2>
231 Version 4.x of Mesa implements the OpenGL 1.3 API with the following
232 extensions incorporated as standard features:
236 <li>GL_ARB_multisample
237 <li>GL_ARB_multitexture
238 <li>GL_ARB_texture_border_clamp
239 <li>GL_ARB_texture_compression
240 <li>GL_ARB_texture_cube_map
241 <li>GL_ARB_texture_env_add
242 <li>GL_ARB_texture_env_combine
243 <li>GL_ARB_texture_env_dot3
244 <li>GL_ARB_transpose_matrix
247 <H2>Version 3.x features</H2>
250 Version 3.x of Mesa implements the OpenGL 1.2 API with the following
254 <li>BGR, BGRA and packed pixel formats
255 <li>New texture border clamp mode
256 <li>glDrawRangeElements()
257 <li>standard 3-D texturing
258 <li>advanced MIPMAP control
259 <li>separate specular color interpolation
263 <H2>Version 2.x features</H2>
265 Version 2.x of Mesa implements the OpenGL 1.1 API with the following
271 <li>glAreTexturesResident
275 <li>glCopyTexSubImage1D
276 <li>glCopyTexSubImage2D
280 <li>glPrioritizeTextures
289 <li>glEdgeFlagPointer
291 <li>glInterleavedArrays
293 <li>glTexCoordPointer
296 <li>Client state management:
298 <li>glDisableClientState
299 <li>glEnableClientState
300 <li>glPopClientAttrib
301 <li>glPushClientAttrib