1Mesa 7.5 Release Notes / 17 July 2009
2=====================================
3
4Mesa 7.5 is a new development release. People who are concerned with
5stability and reliability should stick with the 7.4.x branch or wait for
6Mesa 7.5.1.
7
8The main new feature of Mesa 7.5 is the
9`Gallium3D <https://www.freedesktop.org/wiki/Software/gallium>`__
10infrastructure.
11
12Mesa 7.5 implements the OpenGL 2.1 API, but the version reported by
13glGetString(GL_VERSION) depends on the particular driver being used.
14Some drivers don't support all the features required in OpenGL 2.1.
15
16See the :doc:`Compiling/Installing page <../install>` for
17prerequisites for DRI hardware acceleration.
18
19Note that the Mesa project is no longer using odd/even version numbers
20to indicate development/stable releases. The so-called development
21releases have been fairly stable. If you're especially concerned with
22stability you should probably look for "point" releases such as 7.5.1
23which will be a bug-fix release.
24
25MD5 checksums
26-------------
27
28::
29
30   553fd956e544727f30fbe249619b6286  MesaLib-7.5.tar.gz
31   459f332551f6ebb86f384d21dd15e1f0  MesaLib-7.5.tar.bz2
32   8c02c0e17a9025250d20424ae32f5163  MesaLib-7.5.zip
33   a188da2886fa5496ea0c2cda602b2eeb  MesaDemos-7.5.tar.gz
34   398ee8801814a00e47f6c2314e3dfddc  MesaDemos-7.5.tar.bz2
35   15a0c8ae013c54335a26335e1a98d609  MesaDemos-7.5.zip
36   81010147def5a644ba14f9bbb7a49a2a  MesaGLUT-7.5.tar.gz
37   baa7a1e850b6e39bae58868fd0684004  MesaGLUT-7.5.tar.bz2
38   265228418e4423fa328f2f5b7970cf08  MesaGLUT-7.5.zip
39
40New features
41------------
42
43-  Gallium3D - this is the new architecture for OS-independent and
44   API-independent 3D drivers. Gallium3D is intended for GPUs that fully
45   support vertex/fragment shaders. The Gallium3D drivers currently
46   included are:
47
48   -  softpipe - a software/reference driver
49   -  i915 - Intel 915/945 driver
50   -  Cell - IBM/Sony/Toshiba Cell processor driver
51   -  nouveau (for NVIDIA GPUs) and R300 for (AMD/ATI R300).
52
53      .. note::
54
55         these drivers are incomplete and still under development.
56         It's probably NOT worthwhile to report any bugs unless you have
57         patches.
58
59-  GL_ARB_framebuffer_object extension (software drivers, i965 driver)
60-  Reworked two-sided stencil support. This allows a driver to support
61   all three variations of two-sided stencil including
62   GL_ATI_separate_stencil, GL_EXT_stencil_two_side and OpenGL 2.0
63-  GL_EXT_vertex_array_bgra extension (software drivers, i965 driver)
64-  GL_NV_texture_env_combine4 extension (software drivers, i965/i915
65   drivers)
66-  GL_EXT_texture_swizzle extension (software drivers, i965 driver)
67-  Updated SPARC assembly optimizations (David S. Miller)
68-  Initial support for separate compilation units in GLSL compiler.
69-  Increased max number of generic GLSL varying variables to 16
70   (formerly 8).
71-  GLSL linker now detects when too many varying variables are used.
72-  Optimize-out redundant glMaterial and glShadeModel calls in display
73   lists
74-  Fixed gl_TextureMatrix[i][j] array indexing bug in GLSL compiler.
75
76Bug fixes
77---------
78
79-  Lots of i965 driver bug fixes
80-  Fixed some GLSL preprocessor bugs
81-  GLSL: continue inside of a for-loop didn't work
82
83Changes
84-------
85
86-  Remove support for GL_SGIX_shadow, GL_SGIX_shadow_ambient and
87   GL_SGIX_depth_texture extensions. Superseded by the ARB versions.
88-  Omitted some old Mesa demos from the release tarballs, added some
89   others.
90