forked from KolibriOS/kolibrios
146 lines
3.8 KiB
Groff
146 lines
3.8 KiB
Groff
|
|
Mesa 3.1 release notes
|
|
|
|
PLEASE READ!!!!
|
|
|
|
|
|
New copyright
|
|
-------------
|
|
|
|
Mesa 3.1 will be distributed under an XFree86-style copyright instead
|
|
of the GNU LGPL.
|
|
|
|
|
|
New directories
|
|
---------------
|
|
|
|
All documentation files are now in the docs/ directory.
|
|
All shell scripts are now in the bin/ directory.
|
|
|
|
|
|
New library names
|
|
-----------------
|
|
|
|
Formerly, the main Mesa library was named libMesaGL.so (or libMesaGL.a)
|
|
and the GLU library was named libMesaGLU.so (or libMesaGLU.a).
|
|
|
|
Now, the main library is named libGL.so (or libGL.a) and the GLU library
|
|
is named libGLU.so (or libGLU.a).
|
|
|
|
The change allows Mesa to be more easily substituted for OpenGL.
|
|
Specifically, the linker/loader on some Unix-like systems won't
|
|
allow libMesaGL.so to be used instead of libGL.so if the application
|
|
was linked with the former.
|
|
|
|
Warning: if you have another OpenGL implementation installed on your
|
|
system (i.e. you have another OpenGL libGL.so) you'll have to be
|
|
carefull about which library (OpenGL or Mesa) you link against. Be
|
|
aware of -L linker flags and the value of the LD_LIBRARY_PATH environment
|
|
variable.
|
|
|
|
|
|
New library versioning
|
|
----------------------
|
|
|
|
Previously, the Mesa GL library was named libMesaGL.so.3.0
|
|
To better support Linux/OpenGL standards, the Mesa GL library is now
|
|
named libGL.so.1.2.030100 This indicates version 1.2 of the OpenGL spec
|
|
and Mesa implementation 3.1.0
|
|
|
|
In the long term this will allow better interoperability with other
|
|
OpenGL implementations, especially on Linux. In the short term,
|
|
OpenGL apps may have to be relinked to use the new library naming.
|
|
|
|
|
|
|
|
New makefiles
|
|
-------------
|
|
|
|
The old Makefiles found in the various directories have been renamed
|
|
to Makefile.X11 in order to prevent filename collisions with autoconfig-
|
|
generated Makefiles.
|
|
|
|
The top-level Makefile simply includes Makefile.X11
|
|
If your top-level Makefile get's overwritten/destroyed you can restore
|
|
it by copying Makefile.X11 to Makefile
|
|
|
|
|
|
New extensions
|
|
--------------
|
|
|
|
GL_EXT_stencil_wrap
|
|
Implements two new stencil operations: GL_INCR_WRAP_EXT and
|
|
GL_DECR_WRAP_EXT which allow stencil increment and decrement
|
|
without clamping.
|
|
|
|
GL_INGR_blend_func_separate
|
|
Allows specification of blend factors for RGB and Alpha independently.
|
|
(INGR = Intergraph)
|
|
|
|
GL_ARB_multitexture
|
|
Multiple simultaneous textures. (ARB = Architecture Review Board)
|
|
|
|
GL_NV_texgen_reflection
|
|
nVidia texgen extension for better reflection mapping.
|
|
|
|
GL_PGI_misc_hints
|
|
Assorted transformation hints.
|
|
|
|
GL_EXT_compiled_vertex_array
|
|
Compiled vertex arrays.
|
|
|
|
GL_EXT_clip_volume_hint
|
|
Allows one to disable clip volume (frustum) testing.
|
|
|
|
|
|
|
|
Extensions removed
|
|
------------------
|
|
|
|
GL_EXT_multitexture - obsolete in favor of GL_ARB_multitexture
|
|
|
|
|
|
|
|
Config file
|
|
-----------
|
|
|
|
By default, /etc/mesa.conf will be read when Mesa starts. This
|
|
file controls default hints, enable/disable of extensions, and
|
|
more. See the CONFIG file for documentation.
|
|
|
|
|
|
|
|
Optimizations
|
|
-------------
|
|
|
|
Keith Whitwell has contributed significant optimizations to Mesa's
|
|
vertex transformation code. Basically, the whole transformation
|
|
stage of Mesa has been rewritten.
|
|
|
|
It's impossible to give a speedup factor. You'll just have to
|
|
try your app and see how it performs.
|
|
|
|
|
|
|
|
Device Driver changes
|
|
---------------------
|
|
|
|
A bunch of new device driver functions have been added. See src/dd.h
|
|
Keith Harrison contributed many of them. I've been planning on adding
|
|
a bunch of functions like these to make writing hardware drivers easier.
|
|
More such function will probably be added in the near future.
|
|
|
|
|
|
|
|
Miscellaneous
|
|
-------------
|
|
|
|
util/glstate.c has some handy functions for debugging. Basically, it
|
|
offers a simple function for printing GL state variables. It's not
|
|
finished yet. There's a LOT more GLenum records to be added (see the
|
|
code). Anyone want to help?
|
|
|
|
|
|
|
|
----------------------------------------------------------------------
|