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.freedesktop.org/" target="_parent">Direct Rendering
26 Infrastructure</a> and <a href="http://x.org" target="_parent">X.org</a> to
27 provide OpenGL support to users of X on Linux, FreeBSD and other operating
33 <H1>Project History</H1>
36 The Mesa project was originally started by Brian Paul.
37 Here's a short history of the project.
41 August, 1993: I begin working on Mesa in my spare time. The project
42 has no name at that point. I was simply interested in writing a simple
43 3D graphics library that used the then-new OpenGL API. I was partially
44 inspired by the <em>VOGL</em> library which emulated a subset of IRIS GL.
45 I had been programming with IRIS GL since 1991.
49 November 1994: I contact SGI to ask permission to distribute my OpenGL-like
50 graphics library on the internet. SGI was generally receptive to the
51 idea and after negotiations with SGI's legal department, I get permission
56 February 1995: Mesa 1.0 is released on the internet. I expected that
57 a few people would be interested in it, but not thousands.
58 I was soon receiving patches, new features and thank-you notes on a
59 daily basis. That encouraged me to continue working on Mesa. The
60 name Mesa just popped into my head one day. SGI had asked me not to use
61 the terms <em>"Open"</em> or <em>"GL"</em> in the project name and I didn't
62 want to make up a new acronym. Later, I heard of the Mesa programming
63 language and the Mesa spreadsheet for NeXTStep.
67 In the early days, OpenGL wasn't available on too many systems.
68 It even took a while for SGI to support it across their product line.
69 Mesa filled a big hole during that time.
70 For a lot of people, Mesa was their first introduction to OpenGL.
71 I think SGI recognized that Mesa actually helped to promote
72 the OpenGL API, so they didn't feel threatened by the project.
77 1995-1996: I continue working on Mesa both during my spare time and during
78 my work hours at the Space Science and Engineering Center at the University
79 of Wisconsin in Madison. My supervisor, Bill Hibbard, lets me do this because
80 Mesa is now being using for the <a href="http://www.ssec.wisc.edu/%7Ebillh/vis.html" target="_parent">Vis5D</a> project.
82 October 1996: Mesa 2.0 is released. It implements the OpenGL 1.1 specification.
86 March 1997: Mesa 2.2 is released. It supports the new 3dfx Voodoo graphics
87 card via the Glide library. It's the first really popular hardware OpenGL
88 implementation for Linux.
92 September 1998: Mesa 3.0 is released. It's the first publicly-available
93 implementation of the OpenGL 1.2 API.
97 March 1999: I attend my first OpenGL ARB meeting. I contribute to the
98 development of several official OpenGL extensions over the years.
102 September 1999: I'm hired by Precision Insight, Inc. Mesa is a key
103 component of 3D hardware acceleration in the new DRI project for XFree86.
104 Drivers for 3dfx, 3dLabs, Intel, Matrox and ATI hardware soon follow.
108 October 2001: Mesa 4.0 is released.
109 It implements the OpenGL 1.3 specification.
114 November 2001: I cofound <a href="http://www.tungstengraphics.com" target="_parent">
115 Tungsten Graphics, Inc.</a> with Keith Whitwell, Jens Owen, David Dawes and
117 I continue to develop Mesa as part of my resposibilities with Tungsten
118 Graphics and as a spare-time project.
122 November 2002: Mesa 5.0 is released.
123 It implements the OpenGL 1.4 specification.
127 January 2003: Mesa 6.0 is released. It implements the OpenGL 1.5
128 specification as well as the GL_ARB_vertex_program and
129 GL_ARB_fragment_program extensions.
133 June 2007: Mesa 7.0 is released, implementing the OpenGL 2.1 specification
134 and OpenGL Shading Language.
139 Ongoing: Mesa is used as the core of many hardware OpenGL drivers for
140 the XFree86 and X.org X servers within the
141 <A href="http://dri.freedesktop.org/" target="_parent">DRI project</A>.
142 I continue to enhance Mesa with new extensions and features.
147 <H1>Major Versions</H1>
150 This is a summary of the major versions of Mesa.
151 Mesa's major version number has been incremented whenever a new version
152 of the OpenGL specification is implemented.
156 <H2>Version 7.x features</H2>
158 Version 7.x of Mesa implements the OpenGL 2.1 API. The main feature
159 of OpenGL 2.x is the OpenGL Shading Language.
163 <H2>Version 6.x features</H2>
165 Version 6.x of Mesa implements the OpenGL 1.5 API with the following
166 extensions incorporated as standard features:
169 <li>GL_ARB_occlusion_query
170 <li>GL_ARB_vertex_buffer_object
171 <li>GL_EXT_shadow_funcs
174 Also note that several OpenGL tokens were renamed in OpenGL 1.5
175 for the sake of consistency.
176 The old tokens are still available.
180 ------------------------------------------------------------
181 GL_FOG_COORD_SRC GL_FOG_COORDINATE_SOURCE
182 GL_FOG_COORD GL_FOG_COORDINATE
183 GL_CURRENT_FOG_COORD GL_CURRENT_FOG_COORDINATE
184 GL_FOG_COORD_ARRAY_TYPE GL_FOG_COORDINATE_ARRAY_TYPE
185 GL_FOG_COORD_ARRAY_STRIDE GL_FOG_COORDINATE_ARRAY_STRIDE
186 GL_FOG_COORD_ARRAY_POINTER GL_FOG_COORDINATE_ARRAY_POINTER
187 GL_FOG_COORD_ARRAY GL_FOG_COORDINATE_ARRAY
188 GL_SRC0_RGB GL_SOURCE0_RGB
189 GL_SRC1_RGB GL_SOURCE1_RGB
190 GL_SRC2_RGB GL_SOURCE2_RGB
191 GL_SRC0_ALPHA GL_SOURCE0_ALPHA
192 GL_SRC1_ALPHA GL_SOURCE1_ALPHA
193 GL_SRC2_ALPHA GL_SOURCE2_ALPHA
197 <a href="http://www.opengl.org/documentation/spec.html" target="_parent">
198 OpenGL specification</a> for more details.
203 <H2>Version 5.x features</H2>
205 Version 5.x of Mesa implements the OpenGL 1.4 API with the following
206 extensions incorporated as standard features:
209 <li>GL_ARB_depth_texture
211 <li>GL_ARB_texture_env_crossbar
212 <li>GL_ARB_texture_mirror_repeat
213 <li>GL_ARB_window_pos
214 <li>GL_EXT_blend_color
215 <li>GL_EXT_blend_func_separate
216 <li>GL_EXT_blend_logic_op
217 <li>GL_EXT_blend_minmax
218 <li>GL_EXT_blend_subtract
220 <li>GL_EXT_multi_draw_arrays
221 <li>GL_EXT_point_parameters
222 <li>GL_EXT_secondary_color
223 <li>GL_EXT_stencil_wrap
224 <li>GL_EXT_texture_lod_bias (plus, a per-texture LOD bias parameter)
225 <li>GL_SGIS_generate_mipmap
229 <H2>Version 4.x features</H2>
232 Version 4.x of Mesa implements the OpenGL 1.3 API with the following
233 extensions incorporated as standard features:
237 <li>GL_ARB_multisample
238 <li>GL_ARB_multitexture
239 <li>GL_ARB_texture_border_clamp
240 <li>GL_ARB_texture_compression
241 <li>GL_ARB_texture_cube_map
242 <li>GL_ARB_texture_env_add
243 <li>GL_ARB_texture_env_combine
244 <li>GL_ARB_texture_env_dot3
245 <li>GL_ARB_transpose_matrix
248 <H2>Version 3.x features</H2>
251 Version 3.x of Mesa implements the OpenGL 1.2 API with the following
255 <li>BGR, BGRA and packed pixel formats
256 <li>New texture border clamp mode
257 <li>glDrawRangeElements()
258 <li>standard 3-D texturing
259 <li>advanced MIPMAP control
260 <li>separate specular color interpolation
264 <H2>Version 2.x features</H2>
266 Version 2.x of Mesa implements the OpenGL 1.1 API with the following
272 <li>glAreTexturesResident
276 <li>glCopyTexSubImage1D
277 <li>glCopyTexSubImage2D
281 <li>glPrioritizeTextures
290 <li>glEdgeFlagPointer
292 <li>glInterleavedArrays
294 <li>glTexCoordPointer
297 <li>Client state management:
299 <li>glDisableClientState
300 <li>glEnableClientState
301 <li>glPopClientAttrib
302 <li>glPushClientAttrib