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    1 
    2                            Mesa 4.0 release notes
    3 
    4                              October 18, 2001
    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 Odd numbered versions (such as 3.3) designate new developmental releases.
   15 Even numbered versions (such as 3.4) designate stable releases.
   16 
   17 Mesa version 4.0 signifies two things:
   18 
   19   1. A stabilization of the 3.5 development release
   20   2. Implementation of the OpenGL 1.3 specification
   21 
   22 
   23 Note that the Mesa major version number is incremented with the OpenGL
   24 minor version number:
   25 
   26    Mesa 1.x  ==  OpenGL 1.0
   27    Mesa 2.x  ==  OpenGL 1.1
   28    Mesa 3.x  ==  OpenGL 1.2
   29    Mesa 4.x  ==  OpenGL 1.3
   30 
   31 
   32 
   33 New Features
   34 ------------
   35 
   36 Mesa 3.5 already had all the new features of OpenGL 1.3, implemented as
   37 extensions.  These extensions were simply promoted to standard features:
   38 
   39    GL_ARB_multisample
   40    GL_ARB_multitexture
   41    GL_ARB_texture_border_clamp
   42    GL_ARB_texture_compression
   43    GL_ARB_texture_cube_map
   44    GL_ARB_texture_env_add
   45    GL_ARB_texture_env_combine
   46    GL_ARB_texture_env_dot3
   47    GL_ARB_transpose_matrix
   48 
   49 In Mesa 4.0 the functions defined by these extensions are now available
   50 without the "ARB" suffix.  For example, glLoadTransposeMatrixf() is now
   51 a standard API function.  The new functions in OpenGL 1.3 and Mesa 4.0 are:
   52 
   53    glActiveTexture
   54    glClientActiveTexture
   55    glCompressedTexImage1D
   56    glCompressedTexImage2D
   57    glCompressedTexImage3D
   58    glCompressedTexSubImage1D
   59    glCompressedTexSubImage2D
   60    glCompressedTexSubImage3D
   61    glGetCompressedTexImage
   62    glLoadTransposeMatrixd
   63    glLoadTransposeMatrixf
   64    glMultiTexCoord1d
   65    glMultiTexCoord1dv
   66    glMultiTexCoord1f
   67    glMultiTexCoord1fv
   68    glMultiTexCoord1i
   69    glMultiTexCoord1iv
   70    glMultiTexCoord1s
   71    glMultiTexCoord1sv
   72    glMultiTexCoord2d
   73    glMultiTexCoord2dv
   74    glMultiTexCoord2f
   75    glMultiTexCoord2fv
   76    glMultiTexCoord2i
   77    glMultiTexCoord2iv
   78    glMultiTexCoord2s
   79    glMultiTexCoord2sv
   80    glMultiTexCoord3d
   81    glMultiTexCoord3dv
   82    glMultiTexCoord3f
   83    glMultiTexCoord3fv
   84    glMultiTexCoord3i
   85    glMultiTexCoord3iv
   86    glMultiTexCoord3s
   87    glMultiTexCoord3sv
   88    glMultiTexCoord4d
   89    glMultiTexCoord4dv
   90    glMultiTexCoord4f
   91    glMultiTexCoord4fv
   92    glMultiTexCoord4i
   93    glMultiTexCoord4iv
   94    glMultiTexCoord4s
   95    glMultiTexCoord4sv
   96    glMultTransposeMatrixd
   97    glMultTransposeMatrixf
   98    glSampleCoverage
   99    glSamplePass
  100 
  101 
  102 GLX 1.4 is the companion to OpenGL 1.3.  The only new features in GLX 1.4
  103 are support for multisampling and the GLX_ARB_get_proc_address extension.
  104 glXGetProcAddress() is the only new function in GLX 1.4.
  105 
  106 
  107 
  108 Multisample and Texture Compression
  109 -----------------------------------
  110 
  111 The OpenGL 1.3 specification allows the multisample and texture compression
  112 features to essentially be no-ops.  For example, if you query for multisample
  113 support you'll find none, but the API functions work.
  114 
  115 Similarly, texture compression is not implemented by any of the software
  116 drivers but you can specify a generic compressed texture format (like
  117 GL_COMPRESSED_RGBA) to glTexImage2D and it'll be accepted.
  118 
  119 
  120 
  121 Device Drivers
  122 --------------
  123 
  124 Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the
  125 device driver.  If the driver enables all the ARB extensions which are part
  126 of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3".  Otherwise,
  127 it'll return "1.2".
  128 
  129 A number of Mesa's software drivers haven't been actively maintained for
  130 some time.  We rely on volunteers to maintain many of the drivers.
  131 Here's the current status of all included drivers:
  132 
  133 
  134 Driver			Status
  135 ----------------------	---------------------
  136 XMesa (Xlib)		implements OpenGL 1.3
  137 OSMesa (off-screen)	implements OpenGL 1.3
  138 FX (3dfx Voodoo1/2)	implements OpenGL 1.3
  139 SVGA			implements OpenGL 1.3
  140 Wind River UGL		implements OpenGL 1.3
  141 Windows/Win32		implements OpenGL 1.3
  142 GGI			needs updating
  143 DOS/DJGPP		needs updating
  144 BeOS			needs updating
  145 Allegro			needs updating
  146 D3D			needs updating
  147 DOS			needs updating
  148 
  149 Special thanks go to Karl Schultz for updating the Windows driver.
  150 
  151 The XFree86/DRI drivers	have not yet been updated to use Mesa 4.0 as of
  152 September 2001, but that should happen eventually.
  153 
  154 
  155 
  156 Other Changes
  157 -------------
  158 
  159 See the VERSIONS file for more details about bug fixes, etc. in Mesa 4.0.
  160 
  161 
  162 ----------------------------------------------------------------------