<TITLE>Mesa Introduction</TITLE>
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<H1>Introduction</H1>
<p>
-Mesa is a 3-D graphics library with an API which is very similar to
-that of <a href="http://www.opengl.org/" target="_parent">OpenGL</a>.*
-To the extent that Mesa utilizes the OpenGL command syntax or state
-machine, it is being used with authorization from <a
-href="http://www.sgi.com/" target="_parent">Silicon Graphics,
-Inc.</a>(SGI). However, the author does not possess an OpenGL license
-from SGI, and makes no claim that Mesa is in any way a compatible
-replacement for OpenGL or associated with SGI. Those who want a
-licensed implementation of OpenGL should contact a licensed
-vendor.
+Mesa is an open-source implementation of the
+<a href="http://www.opengl.org/" target="_parent">OpenGL</a> specification -
+a system for rendering interactive 3D graphics.
</p>
<p>
-Please do not refer to the library as <em>MesaGL</em> (for legal
-reasons). It's just <em>Mesa</em> or <em>The Mesa 3-D graphics
-library</em>. <br>
+A variety of device drivers allows Mesa to be used in many different
+environments ranging from software emulation to complete hardware acceleration
+for modern GPUs.
</p>
<p>
-* OpenGL is a trademark of <a href="http://www.sgi.com/"
-target="_parent">Silicon Graphics Incorporated</a>.
+Mesa ties into several other open-source projects: the
+<a href="http://dri.freedesktop.org/" target="_parent">Direct Rendering
+Infrastructure</a> and <a href="http://x.org" target="_parent">X.org</a> to
+provide OpenGL support to users of X on Linux, FreeBSD and other operating
+systems.
</p>
+
<H1>Project History</H1>
<p>
-The Mesa project was founded by me, Brian Paul. Here's a short history
-of the project.
+The Mesa project was originally started by Brian Paul.
+Here's a short history of the project.
</p>
<p>
of Wisconsin in Madison. My supervisor, Bill Hibbard, lets me do this because
Mesa is now being using for the <a href="http://www.ssec.wisc.edu/%7Ebillh/vis.html" target="_parent">Vis5D</a> project.
</p><p>
-October 1996: Mesa 2.0 is released. It implementes the OpenGL 1.1 specification.
+October 1996: Mesa 2.0 is released. It implements the OpenGL 1.1 specification.
</p>
<p>
</p>
<p>
-Ongoing: Mesa is used as the core of many hardware OpenGL drivers for XFree86
-within the
-<A href="http://dri.sourceforge.net/" target="_parent">DRI project</A>.
+January 2003: Mesa 6.0 is released. It implements the OpenGL 1.5
+specification as well as the GL_ARB_vertex_program and
+GL_ARB_fragment_program extensions.
+</p>
+
+<p>
+June 2007: Mesa 7.0 is released, implementing the OpenGL 2.1 specification
+and OpenGL Shading Language.
+</p>
+
+
+<p>
+Ongoing: Mesa is used as the core of many hardware OpenGL drivers for
+the XFree86 and X.org X servers within the
+<A href="http://dri.freedesktop.org/" target="_parent">DRI project</A>.
I continue to enhance Mesa with new extensions and features.
</p>
<H1>Major Versions</H1>
<p>
-This is a summary of the major versions of Mesa. Note that Mesa's major
-version number tracks OpenGL's minor version number.
+This is a summary of the major versions of Mesa.
+Mesa's major version number has been incremented whenever a new version
+of the OpenGL specification is implemented.
+</p>
+
+
+<H2>Version 7.x features</H2>
+<p>
+Version 7.x of Mesa implements the OpenGL 2.1 API. The main feature
+of OpenGL 2.x is the OpenGL Shading Language.
</p>
+<H2>Version 6.x features</H2>
+<p>
+Version 6.x of Mesa implements the OpenGL 1.5 API with the following
+extensions incorporated as standard features:
+</p>
+<ul>
+<li>GL_ARB_occlusion_query
+<li>GL_ARB_vertex_buffer_object
+<li>GL_EXT_shadow_funcs
+</ul>
+<p>
+Also note that several OpenGL tokens were renamed in OpenGL 1.5
+for the sake of consistency.
+The old tokens are still available.
+</p>
+<pre>
+New Token Old Token
+------------------------------------------------------------
+GL_FOG_COORD_SRC GL_FOG_COORDINATE_SOURCE
+GL_FOG_COORD GL_FOG_COORDINATE
+GL_CURRENT_FOG_COORD GL_CURRENT_FOG_COORDINATE
+GL_FOG_COORD_ARRAY_TYPE GL_FOG_COORDINATE_ARRAY_TYPE
+GL_FOG_COORD_ARRAY_STRIDE GL_FOG_COORDINATE_ARRAY_STRIDE
+GL_FOG_COORD_ARRAY_POINTER GL_FOG_COORDINATE_ARRAY_POINTER
+GL_FOG_COORD_ARRAY GL_FOG_COORDINATE_ARRAY
+GL_SRC0_RGB GL_SOURCE0_RGB
+GL_SRC1_RGB GL_SOURCE1_RGB
+GL_SRC2_RGB GL_SOURCE2_RGB
+GL_SRC0_ALPHA GL_SOURCE0_ALPHA
+GL_SRC1_ALPHA GL_SOURCE1_ALPHA
+GL_SRC2_ALPHA GL_SOURCE2_ALPHA
+</pre>
+<p>
+See the
+<a href="http://www.opengl.org/documentation/spec.html" target="_parent">
+OpenGL specification</a> for more details.
+</p>
+
+
+
<H2>Version 5.x features</H2>
<p>
Version 5.x of Mesa implements the OpenGL 1.4 API with the following
projects / mesa.git / blobdiff