docs/RELNOTES-5.1

   1
   2                             Mesa 5.1 release notes
   3
   4                               Month day, 2003
   5
   6                                 PLEASE READ!!!!
   7
   8
   9
  10 Introduction
  11 ------------
  12
  13 Mesa uses an even/odd version number scheme like the Linux kernel.
  14 Even-numbered versions (such as 5.0) designate stable releases.
  15 Odd-numbered versions (such as 5.1) designate new developmental releases.
  16
  17
  18 Bug fixes
  19 ---------
  20 See the VERSIONS file for a list of bugs fixed in this release.
  21
  22
  23
  24 New Features in Mesa 5.1
  25 ------------------------
  26
  27 GL_ATI_texture_env_combine3 extension
  28    This adds a few new texture combine modes.
  29    Contributed by Ian Romanick.
  30
  31 GL_SGI_texture_color_table
  32    Adds a color table lookup to the RGBA texture path.  There's a separate
  33    color table for each texture unit.
  34    Contributed by Eric Plante.
  35
  36 GL_NV_fragment_program
  37    NVIDIA's fragment-level programming feature.
  38    Possible lurking bugs:
  39      - the DDX and DDY commands aren't fully tested
  40      - there may be bugs in the parser
  41      - the TEX and TXP instructions both do perspective correction
  42      - the pack/unpack instructions may not be correct
  43
  44 GL_EXT_depth_bounds_test
  45    This extension adds a scissor-like test for the Z axis.  It's used to
  46    optimize stencil-volume shadow algorithms.
  47
  48 GL_NV_light_max_exponent
  49    Lifts the 128 limit for max light exponent.
  50
  51
  52
  53 Build System Changes
  54 --------------------
  55
  56 The "old style" makefile system has been updated:
  57    1. Make-config has been trimmed down to fewer, modern configurations.
  58    2. Most of the bin/mklib.* scripts have been rolled into a new "mklib"
  59       script that works on all sorts of systems.  There are probably some
  60       bugs in it, but it's been tested on Linux, SunOS 5.8 and IRIX 6.5.
  61       Improvements/contributes are greatly appreciated.
  62    3. The Makefile.X11 files have been cleaned up in various ways
  63
  64 NOTE: there are plans to completely reorganize the Mesa directory tree
  65 structure.  At that time, the GNU autoconf/autoconfig support will be
  66 removed.
  67
  68
  69
  70 Source File Changes
  71 -------------------
  72
  73 The mmath.[ch] files are obsolete.  Their contents have been moved
  74 into the imports.[ch] and macros.[ch] files.
  75
  76 The files related to vertex and fragment programming have changed.
  77 Old files:
  78         vpexec.[ch]
  79         vpparse.[ch]
  80         vpstate.[ch]
  81 New files:
  82         nvvertprog.h              - NV vertex program definitions
  83         nvfragprog.h              - NV fragment program definitions
  84         nvvertparse.[ch]          - NV vertex program parser
  85         nvfragparse.[ch]          - NV fragment program parser
  86         nvprogram.[ch]            - NV program API functions
  87         nvvertexec.[ch]           - NV vertex program execution
  88         swrast/s_nvfragprog.[ch]  - NV fragment program execution
  89
  90 Removed files:
  91         swrast/s_historgram.[ch]        - moved into src/histogram.c
  92
  93 Other New files:
  94         bufferobj.[ch]          - GL_ARB_vertex_buffer_object functions
  95         arbprogram.[ch]         - GL_ARB_vertex/fragment_program functions
  96         version.h               - defines the Mesa version info
  97
  98
  99 Other Changes
 100 -------------
 101
 102 The ctx->Driver.CreateTexture function has been removed - it wasn't used.
 103
 104 New device driver hook functions:
 105    NewTextureObject   - used to allocate struct gl_texture_objects
 106    NewTextureImage    - used to allocate struct gl_texture_images
 107
 108 New ctx->Texture._EnabledCoordUnits field:
 109    With the addition of GL_NV_fragment_program we may need to interpolate
 110    various sets of texture coordinates even when the corresponding texture
 111    unit is not enabled.  That is, glEnable(GL_TEXTURE_xD) may never get
 112    called but we still may have to interpolate texture coordinates across
 113    triangles so that the fragment program will get them.
 114    This new field indicates which sets of texture coordinates are needed.
 115    If a bit is set in the ctx->Texture._EnabledUnits bitmask is set, the
 116    same bit MUST be set in ctx->Texture._EnabledCoordUnits.
 117
 118
 119
 120 To Do
 121 -----
 122 Add screen-awareness to fakeglx.c
 123
 124
 125
 126
 127 Device Driver Status
 128 --------------------
 129
 130 A number of Mesa's software drivers haven't been actively maintained for
 131 some time.  We rely on volunteers to maintain many of these drivers.
 132 Here's the current status of all included drivers:
 133
 134
 135 Driver                  Status
 136 ----------------------  ---------------------
 137 XMesa (Xlib)            implements OpenGL 1.4
 138 OSMesa (off-screen)     implements OpenGL 1.4
 139 FX (3dfx Voodoo1/2)     implements OpenGL 1.3
 140 SVGA                    implements OpenGL 1.3
 141 Wind River UGL          implements OpenGL 1.3
 142 Windows/Win32           implements OpenGL 1.4
 143 DJGPP                   implements OpenGL 1.4
 144 GGI                     implements OpenGL 1.3
 145 BeOS                    implements OpenGL 1.4
 146 Allegro                 needs updating
 147 D3D                     needs updating
 148
 149 Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the
 150 driver call the _mesa_enable_1_4_extensions() function.
 151
 152
 153 ----------------------------------------------------------------------
 154 $Id: RELNOTES-5.1,v 1.10 2003/06/01 16:27:37 brianp Exp $