docs/relnotes/6.5.3.rst

   1 Mesa 6.5.3 Release Notes / April 27, 2007
   2 =========================================
   3
   4 Mesa 6.5.3 is a development release with many changes and new features.
   5 Mesa 7.0 is expected to follow shortly.
   6
   7 MD5 checksums
   8 -------------
   9
  10 ::
  11
  12    39f33ea64e34e2d5b20640b008b57649  MesaLib-6.5.3.tar.gz
  13    46359457147c469745f24b5074a186f0  MesaLib-6.5.3.tar.bz2
  14    a8946fa861634ce15971396f47992c41  MesaLib-6.5.3.zip
  15    08e26948d57eaca74d02a530b2d8106e  MesaDemos-6.5.3.tar.gz
  16    8af91773ab2653fe537499676b05f2e8  MesaDemos-6.5.3.tar.bz2
  17    783f81b171bf89b0929abc894efd25a6  MesaDemos-6.5.3.zip
  18    9467d415388fe1ad82991fb20704b812  MesaGLUT-6.5.3.tar.gz
  19    360843e46b7ebb6909290b023f9b26fa  MesaGLUT-6.5.3.tar.bz2
  20    7686065e5c15a30de08a1610860b6840  MesaGLUT-6.5.3.zip
  21
  22 Shared library numbering
  23 ------------------------
  24
  25 Mesa 6.5.3 supports the OpenGL 2.0/2.1 API. However, the (unix) shared
  26 library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx). Bumping the
  27 shared library version to 2.x would cause linking problems with existing
  28 OpenGL applications. Since OpenGL 2.x is backward compatible with OpenGL
  29 1.x the shared library version number doesn't have to be incremented
  30 (which would indicate an incompatible ABI).
  31
  32 Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx
  33 for the same reason.
  34
  35 New features
  36 ------------
  37
  38 -  OpenGL 2.0 and 2.1 API support.
  39 -  Entirely new Shading Language code generator. See the :doc:`Shading
  40    Language <../shading>` page for more information.
  41 -  Much faster software execution of vertex, fragment shaders.
  42 -  New vertex buffer object (vbo) infrastructure
  43 -  Updated glext.h file (version 39)
  44 -  Updated glxext.h file (version 19)
  45 -  GL_MAX_DRAWBUFFERS is now 4 (software rendering) so "multiple render
  46    targets" are really supported.
  47
  48 Bug fixes
  49 ---------
  50
  51 -  Fog was errantly applied when a fragment shader was enabled (bug
  52    9346)
  53 -  glPush/PopClientAttrib didn't handle VBO bindings correctly (bug
  54    9445)
  55 -  With 32-bit Z buffer, the fragment Z of lines and points was
  56    sometimes wrong.
  57 -  GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken.
  58 -  1D convolution state could effect 2D image transfers
  59 -  Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521)
  60 -  Fixed a number of framebuffer/renderbuffer reference counting bugs
  61 -  Fixed a few bugs in software-emulated alpha planes
  62 -  Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc.
  63 -  Assorted DRI driver bug fixes.
  64 -  Fixed a number of bugs that prevented "depth-peeling" rendering from
  65    working.
  66
  67 Internal code changes
  68 ---------------------
  69
  70 -  Old array_cache module replaced by new vbo module. All geometry
  71    rendering is now cast in the form of vertex buffer objects.
  72 -  Massive changes to the Shading Language compiler and related state.
  73 -  Vertex/fragment shaders are compiled into GPU instructions and
  74    programs very similar to GL_ARB_vertex/fragment_program.
  75 -  Vertex and fragment programs are executed with the same code now.
  76 -  The SSE-optimized vertex program path has been removed since it
  77    didn't support more than 12 temp registers, didn't support
  78    branching/looping, etc.
  79
  80 To Do (someday) items
  81 ---------------------
  82
  83 -  Switch to freeglut
  84 -  Fix linux-glide target/driver.
  85 -  Improved lambda and derivative calculation for frag progs.
  86
  87 Driver Status
  88 -------------
  89
  90 ::
  91
  92    Driver         Status
  93    ----------------------  ----------------------
  94    DRI drivers     varies with the driver
  95    XMesa/GLX (on Xlib) implements OpenGL 2.1
  96    OSMesa (off-screen) implements OpenGL 2.1
  97    Windows/Win32       implements OpenGL 2.1
  98    Glide (3dfx Voodoo1/2)  implements OpenGL 1.3
  99    SVGA            unsupported
 100    Wind River UGL      unsupported
 101    DJGPP           unsupported
 102    GGI         unsupported
 103    BeOS            unsupported
 104    Allegro         unsupported
 105    D3D         unsupported