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  5.   <title>Mesa Release Notes</title>
  6.   <link rel="stylesheet" type="text/css" href="../mesa.css">
  7. </head>
  8. <body>
  9.  
  10. <div class="header">
  11.   <h1>The Mesa 3D Graphics Library</h1>
  12. </div>
  13.  
  14. <iframe src="../contents.html"></iframe>
  15. <div class="content">
  16.  
  17. <h1>Mesa 6.5.3 Release Notes / April 27, 2007</h1>
  18.  
  19. <p>
  20. Mesa 6.5.3 is a development release with many changes and new features.
  21. Mesa 7.0 is expected to follow shortly.
  22. </p>
  23.  
  24.  
  25. <h2>MD5 checksums</h2>
  26. <pre>
  27. 39f33ea64e34e2d5b20640b008b57649  MesaLib-6.5.3.tar.gz
  28. 46359457147c469745f24b5074a186f0  MesaLib-6.5.3.tar.bz2
  29. a8946fa861634ce15971396f47992c41  MesaLib-6.5.3.zip
  30. 08e26948d57eaca74d02a530b2d8106e  MesaDemos-6.5.3.tar.gz
  31. 8af91773ab2653fe537499676b05f2e8  MesaDemos-6.5.3.tar.bz2
  32. 783f81b171bf89b0929abc894efd25a6  MesaDemos-6.5.3.zip
  33. 9467d415388fe1ad82991fb20704b812  MesaGLUT-6.5.3.tar.gz
  34. 360843e46b7ebb6909290b023f9b26fa  MesaGLUT-6.5.3.tar.bz2
  35. 7686065e5c15a30de08a1610860b6840  MesaGLUT-6.5.3.zip
  36. </pre>
  37.  
  38.  
  39. <h2>Shared library numbering</h2>
  40. <p>
  41. Mesa 6.5.3 supports the OpenGL 2.0/2.1 API.  However, the (unix)
  42. shared library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx).
  43. Bumping the shared library version to 2.x would cause linking problems
  44. with existing OpenGL applications.  Since OpenGL 2.x is backward
  45. compatible with OpenGL 1.x the shared library version number doesn't
  46. have to be incremented (which would indicate an incompatible ABI).
  47. </p>
  48. <p>
  49. Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx
  50. for the same reason.
  51. </p>
  52.  
  53.  
  54.  
  55. <h2>New features</h2>
  56. <ul>
  57. <li>OpenGL 2.0 and 2.1 API support.
  58. <li>Entirely new Shading Language code generator.  See the
  59. <a href="../shading.html">Shading Language</a> page for more information.
  60. <li>Much faster software execution of vertex, fragment shaders.
  61. <li>New vertex buffer object (vbo) infrastructure
  62. <li>Updated glext.h file (version 39)
  63. <li>Updated glxext.h file (version 19)
  64. <li>GL_MAX_DRAWBUFFERS is now 4 (software rendering) so
  65.    "multiple render targets" are really supported.
  66. </ul>
  67.  
  68. <h2>Bug fixes</h2>
  69. <ul>
  70. <li>Fog was errantly applied when a fragment shader was enabled (bug 9346)
  71. <li>glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 9445)
  72. <li>With 32-bit Z buffer, the fragment Z of lines and points was sometimes wrong.
  73. <li>GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken.
  74. <li>1D convolution state could effect 2D image transfers
  75. <li>Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521)
  76. <li>Fixed a number of framebuffer/renderbuffer reference counting bugs
  77. <li>Fixed a few bugs in software-emulated alpha planes
  78. <li>Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc.
  79. <li>Assorted DRI driver bug fixes.
  80. <li>Fixed a number of bugs that prevented "depth-peeling" rendering from working.
  81. </ul>
  82.  
  83.  
  84. <h2>Internal code changes</h2>
  85. <ul>
  86. <li>Old array_cache module replaced by new vbo module.  All geometry
  87. rendering is now cast in the form of vertex buffer objects.
  88. <li>Massive changes to the Shading Language compiler and related state.
  89. <li>Vertex/fragment shaders are compiled into GPU instructions and
  90. programs very similar to GL_ARB_vertex/fragment_program.
  91. <li>Vertex and fragment programs are executed with the same code now.
  92. <li>The SSE-optimized vertex program path has been removed since it didn't
  93. support more than 12 temp registers, didn't support branching/looping, etc.
  94. </ul>
  95.  
  96.  
  97. <h2>To Do (someday) items</h2>
  98. <ul>
  99. <li>Switch to freeglut
  100. <li>Fix linux-glide target/driver.
  101. <li>Improved lambda and derivative calculation for frag progs.
  102. </ul>
  103.  
  104.  
  105. <h2>Driver Status</h2>
  106.  
  107. <pre>
  108. Driver                  Status
  109. ----------------------  ----------------------
  110. DRI drivers             varies with the driver
  111. XMesa/GLX (on Xlib)     implements OpenGL 2.1
  112. OSMesa (off-screen)     implements OpenGL 2.1
  113. Windows/Win32           implements OpenGL 2.1
  114. Glide (3dfx Voodoo1/2)  implements OpenGL 1.3
  115. SVGA                    unsupported
  116. Wind River UGL          unsupported
  117. DJGPP                   unsupported
  118. GGI                     unsupported
  119. BeOS                    unsupported
  120. Allegro                 unsupported
  121. D3D                     unsupported
  122. </pre>
  123.  
  124. </div>
  125. </body>
  126. </html>
  127.