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11<H1>Mesa 7.5 Release Notes / 17 July 2009</H1>
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13<p>
14Mesa 7.5 is a new development release.
15People who are concerned with stability and reliability should stick
16with the 7.4.x branch or wait for Mesa 7.5.1.
17</p>
18<p>
19The main new feature of Mesa 7.5 is the
20<a href="http://wiki.freedesktop.org/wiki/Software/gallium"
21target="_parent">Gallium3D</a> infrastructure.
22</p>
23<p>
24Mesa 7.5 implements the OpenGL 2.1 API, but the version reported by
25glGetString(GL_VERSION) depends on the particular driver being used.
26Some drivers don't support all the features required in OpenGL 2.1.
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28<p>
29See the <a href="install.html">Compiling/Installing page</a> for prerequisites
30for DRI hardware acceleration.
31</p>
32<p>
33Note that the Mesa project is no longer using odd/even version numbers
34to indicate development/stable releases.
35The so-called development releases have been fairly stable.
36If you're especially concerned with stability you should probably look for
37"point" releases such as 7.5.1 which will be a bug-fix release.
38</p>
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40
41<h2>MD5 checksums</h2>
42<pre>
43tbd
44</pre>
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46
47<h2>New features</h2>
48<ul>
49<li>Gallium3D - this is the new architecture for OS-independent and
50    API-independent 3D drivers.
51    Gallium3D is intended for GPUs that fully support  vertex/fragment shaders.
52    The Gallium3D drivers currently included are:
53    <ul>
54    <li>softpipe - a software/reference driver
55    <li>i915 - Intel 915/945 driver
56    <li><a href="cell.html">Cell</a> - IBM/Sony/Toshiba Cell processor driver
57    <li>nouveau (for NVIDIA GPUs) and R300 for (AMD/ATI R300).
58        <b>PLEASE NOTE: these drivers are incomplete and still under development.
59        It's probably NOT worthwhile to report any bugs unless you have patches.
60        </b>
61    </ul>
62<li>GL_ARB_framebuffer_object extension (software drivers, i965 driver)
63<li>Reworked two-sided stencil support.
64This allows a driver to support all three variations of two-sided stencil
65including GL_ATI_separate_stencil, GL_EXT_stencil_two_side and OpenGL 2.0
66<li>GL_EXT_vertex_array_bgra extension (software drivers, i965 driver)
67<li>GL_NV_texture_env_combine4 extension (software drivers, i965/i915 drivers)
68<li>GL_EXT_texture_swizzle extension (software drivers, i965 driver)
69<li>Updated SPARC assembly optimizations (David S. Miller)
70<li>Initial support for separate compilation units in GLSL compiler.
71<li>Increased max number of generic GLSL varying variables to 16 (formerly 8).
72<li>GLSL linker now detects when too many varying variables are used.
73<li>Optimize-out redundant glMaterial and glShadeModel calls in display lists
74<li>Fixed gl_TextureMatrix[i][j] array indexing bug in GLSL compiler.
75</ul>
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77
78<h2>Bug fixes</h2>
79<ul>
80<li>Lots of i965 driver bug fixes
81<li>Fixed some GLSL preprocessor bugs
82<li>GLSL: continue inside of a for-loop didn't work
83</ul>
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85
86<h2>Changes</h2>
87<ul>
88<li>Remove support for GL_SGIX_shadow, GL_SGIX_shadow_ambient and
89GL_SGIX_depth_texture extensions.  Superseded by the ARB versions.
90<li>Omitted some old Mesa demos from the release tarballs, added some others.
91</ul>
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