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10<h1>Mesa 7.5 Release Notes / 17 July 2009</h1>
11
12<p>
13Mesa 7.5 is a new development release.
14People who are concerned with stability and reliability should stick
15with the 7.4.x branch or wait for Mesa 7.5.1.
16</p>
17<p>
18The main new feature of Mesa 7.5 is the
19<a href="http://wiki.freedesktop.org/wiki/Software/gallium"
20target="_parent">Gallium3D</a> infrastructure.
21</p>
22<p>
23Mesa 7.5 implements the OpenGL 2.1 API, but the version reported by
24glGetString(GL_VERSION) depends on the particular driver being used.
25Some drivers don't support all the features required in OpenGL 2.1.
26</p>
27<p>
28See the <a href="install.html">Compiling/Installing page</a> for prerequisites
29for DRI hardware acceleration.
30</p>
31<p>
32Note that the Mesa project is no longer using odd/even version numbers
33to indicate development/stable releases.
34The so-called development releases have been fairly stable.
35If you're especially concerned with stability you should probably look for
36"point" releases such as 7.5.1 which will be a bug-fix release.
37</p>
38
39
40<h2>MD5 checksums</h2>
41<pre>
42553fd956e544727f30fbe249619b6286  MesaLib-7.5.tar.gz
43459f332551f6ebb86f384d21dd15e1f0  MesaLib-7.5.tar.bz2
448c02c0e17a9025250d20424ae32f5163  MesaLib-7.5.zip
45a188da2886fa5496ea0c2cda602b2eeb  MesaDemos-7.5.tar.gz
46398ee8801814a00e47f6c2314e3dfddc  MesaDemos-7.5.tar.bz2
4715a0c8ae013c54335a26335e1a98d609  MesaDemos-7.5.zip
4881010147def5a644ba14f9bbb7a49a2a  MesaGLUT-7.5.tar.gz
49baa7a1e850b6e39bae58868fd0684004  MesaGLUT-7.5.tar.bz2
50265228418e4423fa328f2f5b7970cf08  MesaGLUT-7.5.zip
51</pre>
52
53
54<h2>New features</h2>
55<ul>
56<li>Gallium3D - this is the new architecture for OS-independent and
57    API-independent 3D drivers.
58    Gallium3D is intended for GPUs that fully support  vertex/fragment shaders.
59    The Gallium3D drivers currently included are:
60    <ul>
61    <li>softpipe - a software/reference driver
62    <li>i915 - Intel 915/945 driver
63    <li>Cell - IBM/Sony/Toshiba Cell processor driver
64    <li>nouveau (for NVIDIA GPUs) and R300 for (AMD/ATI R300).
65        <b>PLEASE NOTE: these drivers are incomplete and still under development.
66        It's probably NOT worthwhile to report any bugs unless you have patches.
67        </b>
68    </ul>
69<li>GL_ARB_framebuffer_object extension (software drivers, i965 driver)
70<li>Reworked two-sided stencil support.
71This allows a driver to support all three variations of two-sided stencil
72including GL_ATI_separate_stencil, GL_EXT_stencil_two_side and OpenGL 2.0
73<li>GL_EXT_vertex_array_bgra extension (software drivers, i965 driver)
74<li>GL_NV_texture_env_combine4 extension (software drivers, i965/i915 drivers)
75<li>GL_EXT_texture_swizzle extension (software drivers, i965 driver)
76<li>Updated SPARC assembly optimizations (David S. Miller)
77<li>Initial support for separate compilation units in GLSL compiler.
78<li>Increased max number of generic GLSL varying variables to 16 (formerly 8).
79<li>GLSL linker now detects when too many varying variables are used.
80<li>Optimize-out redundant glMaterial and glShadeModel calls in display lists
81<li>Fixed gl_TextureMatrix[i][j] array indexing bug in GLSL compiler.
82</ul>
83
84
85<h2>Bug fixes</h2>
86<ul>
87<li>Lots of i965 driver bug fixes
88<li>Fixed some GLSL preprocessor bugs
89<li>GLSL: continue inside of a for-loop didn't work
90</ul>
91
92
93<h2>Changes</h2>
94<ul>
95<li>Remove support for GL_SGIX_shadow, GL_SGIX_shadow_ambient and
96GL_SGIX_depth_texture extensions.  Superseded by the ARB versions.
97<li>Omitted some old Mesa demos from the release tarballs, added some others.
98</ul>
99
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