docs/relnotes/6.3

   1
   2                            Mesa 6.3 release notes
   3
   4                               July 20, 2005
   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 6.3) designate new developmental releases.
  15 Even numbered versions (such as 6.2) designate stable releases.
  16
  17
  18
  19 New Features
  20 ------------
  21
  22 GL_ARB_draw_buffers - allows a fragment program to write to a number of
  23   separate color buffers, instead of just one.
  24
  25 GL_OES_read_format - allows one to query the fastest glReadPixels format
  26   and datatype.
  27
  28 GL_ARB_pixel_buffer_object - buffer objects for pixel read/write functions.
  29
  30 GL_EXT_framebuffer_object - allows render-to-texture and provides a
  31   window-system indepedent Pbuffer facility.
  32   The Mesa CVS tree contains a couple tests of this extension.
  33
  34 DirectFB driver, contributed by Claudio Ciccani.  See docs/README.directfb
  35 for details.
  36
  37
  38
  39 Vertex/Fragment Program PRINT Instruction
  40 -----------------------------------------
  41
  42 The GL_NV_vertex_program and GL_NV_fragment_program languages have been
  43 extended with a PRINT instruction.
  44
  45
  46
  47 glDeleteTextures(), glDeletePrograms() and glDeleteBuffers() Changed
  48 --------------------------------------------------------------------
  49
  50 To match the behaviour of other OpenGL implementations, glDeleteTextures,
  51 glDeletePrograms and glDeleteBuffers have been modified so that:
  52
  53   * The named texture/program/buffer ID is immediately freed for re-use.
  54
  55   * The actual texture object, program or buffers isn't really deleted until
  56     it is no longer bound in any rendering context (the reference count
  57     is zero).
  58
  59 Previously, the texture/program/buffer ID wasn't freed until the object
  60 was really deleted.
  61
  62 Note that textures, programs and buffers can be shared by several rendering
  63 contexts so they can't be deleted until they're unbound in _all_ contexts.
  64
  65
  66
  67 GL_EXT_framebuffer_object changes
  68 ---------------------------------
  69
  70 Implementing this extension involved changing a lot of code (for the better).
  71
  72 The gl_framebuffer object now a collection of gl_renderbuffer objects.
  73 Renderbuffers may store colors, stencil indices, or depth values.  The
  74 gl_framebuffer and gl_renderbuffer types are object-oriented in design.
  75
  76 All the old RGB, color index, stencil and depth-related span functions for
  77 reading/writing pixels from/to buffers has changed.  Now, all pixels are
  78 read/written through a set of common renderbuffer functions (methods).
  79
  80 Most device drivers have been updated for these changes, but some haven't.
  81
  82
  83
  84 To Do (someday) items
  85 ---------------------
  86  Switch to freeglut
  87  Increase MAX_DRAWBUFFERS
  88  driver hooks for BeginQuery/EndQuery
  89
  90
  91
  92 Miscellaneous
  93 -------------
  94
  95 The main/get.c file is now generated with a Python script (get_gen.py).
  96
  97
  98
  99 Driver                  Status
 100 ----------------------  ---------------------
 101 XMesa (Xlib)            implements OpenGL 1.5
 102 OSMesa (off-screen)     implements OpenGL 1.5
 103 Glide (3dfx Voodoo1/2)  implements OpenGL 1.3
 104 SVGA                    implements OpenGL 1.3
 105 Wind River UGL          implements OpenGL 1.3
 106 Windows/Win32           implements OpenGL 1.5
 107 DJGPP                   implements OpenGL 1.5
 108 GGI                     implements OpenGL 1.3
 109 BeOS                    implements OpenGL 1.5
 110 Allegro                 needs updating
 111 D3D                     needs updating
 112
 113
 114 ----------------------------------------------------------------------