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-
-                            Mesa 5.1 release notes
-
-                              December 17, 2003
-
-                                PLEASE READ!!!!
-
-
-
-Introduction
-------------
-
-Mesa uses an even/odd version number scheme like the Linux kernel.
-Even-numbered versions (such as 5.0) designate stable releases.
-Odd-numbered versions (such as 5.1) designate new developmental releases.
-
-
-Bug fixes
----------
-See the VERSIONS file for a list of bugs fixed in this release.
-
-
-
-New Features in Mesa 5.1
-------------------------
-
-GL_ARB_vertex_program / GL_ARB_fragment_program
-   Michal Krol and Karl Rasche implemented these extensions.  Thanks!
-   Be aware that there may be some rough edges and lurking bugs.
-
-GL_ATI_texture_env_combine3 extension
-   This adds a few new texture combine modes.
-   Contributed by Ian Romanick.
-
-GL_SGI_texture_color_table
-   Adds a color table lookup to the RGBA texture path.  There's a separate
-   color table for each texture unit.
-   Contributed by Eric Plante.
-
-GL_NV_fragment_program
-   NVIDIA's fragment-level programming feature.
-   Possible lurking bugs:
-     - the DDX and DDY commands aren't fully tested
-     - there may be bugs in the parser
-     - the TEX and TXP instructions both do perspective correction
-     - the pack/unpack instructions may not be correct
-
-GL_EXT_depth_bounds_test
-   This extension adds a scissor-like test for the Z axis.  It's used to
-   optimize stencil-volume shadow algorithms.
-
-GL_NV_light_max_exponent
-   Lifts the 128 limit for max light exponent.
-
-GL_EXT_texture_rectangle
-   Identical to GL_NV_texture_rectangle
-
-GL_ARB_occlusion_query
-   Useful for visibility-based culling.
-
-GL_ARB_texture_non_power_of_two
-   Removes the restriction that texture dimensions must be powers of two.
-
-GL_ARB_vertex_buffer_object
-   Allows server-side vertex arrays, optimized host/card data transfers, etc.
-
-GL_ARB_point_sprite
-   ARB-approved version of GL_NV_point_sprite.  Basically allows textures
-   to be applied to points.
-
-GL_IBM_multimode_draw_arrays
-   Allows multiple vertex arrays to be drawn with one call, including arrays
-   of different types of primitives.
-
-GL_SUN_multi_draw_arrays
-   An alias for GL_EXT_multi_draw_arrays, standard in OpenGL 1.4.
-
-Faster glDrawPixels / glCopyPixels in X11 driver
-   If your X screen is 32bpp, glDrawPixels to the front color buffer will
-   be accelerated (via XPutImage()) if the image format is GL_BGRA and the
-   type is GL_UNSIGNED_BYTE.  No raster operations, such as depth test,
-   blend, fog, etc. can be enabled.
-
-   If your X screen is 16bpp, glDrawPixels to the front color buffer will
-   be accelerated (via XPutImage()) if the image format is GL_RGB and the
-   type is GL_UNSIGNED_SHORT_5_6_5.  No raster operations, such as depth
-   test, blend, fog, etc. can be enabled.
-
-   glCopyPixels() calls for the front color buffer will be accelerated
-   (via XCopyArea()) if no raster operations, such as depth test, blend,
-   fog, pixel zoom, etc. are enabled.
-
-   The speed-up over typical software rendering is a factor of 10 for
-   glDrawPixels and 100 for glCopyPixels.
-
-
-With the addition of GL_ARB_occlusion_query, GL_ARB_vertex_buffer_object,
-GL_ARB_texture_non_power_of_two and GL_EXT_shadow_funcs, Mesa 5.1 supports
-all the new features of OpenGL 1.5.  Mesa 6.0 (the next stable release)
-will advertise GL_VERSION = "1.5".
- 
-
-
-Vertex/Fragment program debugger
---------------------------------
-
-GL_MESA_program_debug is an experimental extension to support
-interactive debugging of vertex and fragment programs.  See the
-docs/MESA_program_debug.spec file for details.
-
-The bulk of the vertex/fragment program debugger is implemented
-outside of Mesa.  The GL_MESA_program_debug extension just has minimal
-hooks for stopping running programs and inspecting programs.
-
-The progs/tests/debugger.c (only in CVS) program is an example of how
-the extension can be used.  Presently, the debugger code and demo code
-is in the same file.  Eventually the debugger code should be moved
-into a reusable module.
-
-As it is now, the demo lets you set breakpoings in vertex/fragment
-programs, single step, and print intermediate register values.  It's
-basically just a proof of concept.
-
-
-
-Directory tree reorganization
------------------------------
-
-The directory structure for Mesa has been overhauled to improve its layout.
-All source code for Mesa, GLU, GLUT, etc is now under the src/ directory
-in appropriate subdirectories.
-
-The Mesa source code and drivers has been reorganized under src/mesa/.
-
-All demonstration programs and tests are now in subdirectories under progs/.
-
-
-
-Build System Changes
---------------------
-
-The GNU automake/autoconf support has been removed.  As it was, it seldom
-worked on anything but Linux.  The Mesa developers aren't big fans of
-automake/autoconf/libtool and didn't have the time to maintain it.
-If someone wants to contribute new automake/autoconf support (and is
-willing to maintain it), it may be re-incorporated into Mesa, subject
-to some requirements.
-
-The "old style" makefile system has been updated:
-   1. Make-config has been trimmed down to fewer, modern configurations.
-   2. Most of the bin/mklib.* scripts have been rolled into a new "mklib"
-      script that works on all sorts of systems.  There are probably some
-      bugs in it, but it's been tested on Linux, SunOS 5.8 and IRIX 6.5.
-      Improvements/contributes are greatly appreciated.
-   3. The Makefile.X11 files have been cleaned up in various ways
-
-
-
-Source File Changes
--------------------
-
-The mmath.[ch] files are obsolete.  Their contents have been moved
-into the imports.[ch] and macros.[ch] files.
-
-The files related to vertex and fragment programming have changed.
-Old files:
-	vpexec.[ch]
-	vpparse.[ch]
-	vpstate.[ch]
-New files:
-	program.[ch]              - generic ARB/NV program code
-	arbprogram.[ch]           - ARB program API functions
-	arbfragparse.[ch]         - ARB fragment program parsing
-	arbvertparse.[ch]         - ARB vertex program parsing
-	arbparse.[ch]             - ARB vertex/fragment parsing
-	arbparse_syn.h            - vertex/fragment program syntax
-	nvprogram.[ch]            - NV program API functions
-	nvvertprog.h              - NV vertex program definitions
-	nvfragprog.h              - NV fragment program definitions
-	nvvertparse.[ch]          - NV vertex program parser
-	nvfragparse.[ch]          - NV fragment program parser
-	nvvertexec.[ch]           - NV vertex program execution
-	swrast/s_nvfragprog.[ch]  - NV fragment program execution
-
-The files related to per-vertex handling have changed.
-Old files:
-	tnl/t_eval_api.c          - old per-vertex code
-	tnl/t_imm_alloc.c         - old per-vertex code
-	tnl/t_imm_api.c           - old per-vertex code
-	tnl/t_imm_debug.c         - old per-vertex code
-	tnl/t_imm_dlist.c         - old per-vertex code
-	tnl/t_imm_elt.c           - old per-vertex code
-	tnl/t_imm_eval.c          - old per-vertex code
-	tnl/t_imm_exec.c          - old per-vertex code
-	tnl/t_imm_fixup.c         - old per-vertex code
-	tnl/t_vtx_sse.c           - old per-vertex code
-	tnl/t_vtx_x86.c           - old per-vertex code
-New files:
-	tnl/t_save_api.c          - new per-vertex code
-	tnl/t_save_loopback.c     - new per-vertex code
-	tnl/t_save_playback.c     - new per-vertex code
-	tnl/t_vtx_eval.c          - old per-vertex code
-
-Other new files:
-	bufferobj.[ch]		- GL_ARB_vertex_buffer_object functions
-	version.h		- defines the Mesa version info
-
-Other removed files:
-	swrast/s_histogram.[ch]   - moved into src/histogram.c
-
-
-
-Other Changes
--------------
-
-The ctx->Driver.CreateTexture function has been removed - it wasn't used.
-
-New device driver hook functions:
-   NewTextureObject   - used to allocate struct gl_texture_objects
-   NewTextureImage    - used to allocate struct gl_texture_images
-
-New ctx->Texture._EnabledCoordUnits field:
-   With the addition of GL_NV_fragment_program we may need to interpolate
-   various sets of texture coordinates even when the corresponding texture
-   unit is not enabled.  That is, glEnable(GL_TEXTURE_xD) may never get
-   called but we still may have to interpolate texture coordinates across
-   triangles so that the fragment program will get them.
-   This new field indicates which sets of texture coordinates are needed.
-   If a bit is set in the ctx->Texture._EnabledUnits bitmask is set, the
-   same bit MUST be set in ctx->Texture._EnabledCoordUnits.
-
-The ctx->_TriangleCaps field is deprecated.
-   Instead of testing the DD_* bits in _TriangleCaps, you should instead
-   directly test the relevant state variables, or use one of the helper
-   functions like NEED_SECONDARY_COLOR() at the bottom of context.h
-   While testing _TriangleCaps bits was fast, it was kludgey, and setting
-   the bits in the first place could be error prone.
-
-New vertex processing code.
-   The code behind glBegin, glEnd, glVertex, glNormal, etc. has been
-   totally rewritten.  It's a cleaner implementation now and should use
-   less memory. (Keith)
-
-
-
-To Do
------
-Add screen-awareness to fakeglx.c
-
-
-
-
-Device Driver Status
---------------------
-
-A number of Mesa's software drivers haven't been actively maintained for
-some time.  We rely on volunteers to maintain many of these drivers.
-Here's the current status of all included drivers:
-
-
-Driver			Status
-----------------------	---------------------
-XMesa (Xlib)		implements OpenGL 1.4
-OSMesa (off-screen)	implements OpenGL 1.4
-FX (3dfx Voodoo1/2)	implements OpenGL 1.3
-SVGA			implements OpenGL 1.3
-Wind River UGL		implements OpenGL 1.3
-Windows/Win32		implements OpenGL 1.4
-DJGPP			implements OpenGL 1.4
-GGI			implements OpenGL 1.3
-BeOS			implements OpenGL 1.4
-Allegro			needs updating
-D3D			needs updating
-
-Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the
-driver call the _mesa_enable_1_4_extensions() function.
-
-
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