workbench/libs/mesa/docs/relnotes-6.5.3.html

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  11 <H1>Mesa 6.5.3 Release Notes / April 27, 2007</H1>
  12
  13 <p>
  14 Mesa 6.5.3 is a development release with many changes and new features.
  15 Mesa 7.0 is expected to follow shortly.
  16 </p>
  17
  18
  19 <h2>MD5 checksums</h2>
  20 <pre>
  21 39f33ea64e34e2d5b20640b008b57649  MesaLib-6.5.3.tar.gz
  22 46359457147c469745f24b5074a186f0  MesaLib-6.5.3.tar.bz2
  23 a8946fa861634ce15971396f47992c41  MesaLib-6.5.3.zip
  24 08e26948d57eaca74d02a530b2d8106e  MesaDemos-6.5.3.tar.gz
  25 8af91773ab2653fe537499676b05f2e8  MesaDemos-6.5.3.tar.bz2
  26 783f81b171bf89b0929abc894efd25a6  MesaDemos-6.5.3.zip
  27 9467d415388fe1ad82991fb20704b812  MesaGLUT-6.5.3.tar.gz
  28 360843e46b7ebb6909290b023f9b26fa  MesaGLUT-6.5.3.tar.bz2
  29 7686065e5c15a30de08a1610860b6840  MesaGLUT-6.5.3.zip
  30 </pre>
  31
  32
  33 <h2>Shared library numbering</h2>
  34 <p>
  35 Mesa 6.5.3 supports the OpenGL 2.0/2.1 API.  However, the (unix)
  36 shared library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx).
  37 Bumping the shared library version to 2.x would cause linking problems
  38 with existing OpenGL applications.  Since OpenGL 2.x is backward
  39 compatible with OpenGL 1.x the shared library version number doesn't
  40 have to be incremented (which would indicate an incompatible ABI).
  41 </p>
  42 <p>
  43 Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx
  44 for the same reason.
  45 </p>
  46
  47
  48
  49 <h2>New features</h2>
  50 <ul>
  51 <li>OpenGL 2.0 and 2.1 API support.
  52 <li>Entirely new Shading Language code generator.  See the
  53 <a href="shading.html">Shading Language</a> page for more information.
  54 <li>Much faster software execution of vertex, fragment shaders.
  55 <li>New vertex buffer object (vbo) infrastructure
  56 <li>Updated glext.h file (version 39)
  57 <li>Updated glxext.h file (version 19)
  58 <li>GL_MAX_DRAWBUFFERS is now 4 (software rendering) so
  59     "multiple render targets" are really supported.
  60 </ul>
  61
  62 <h2>Bug fixes</h2>
  63 <ul>
  64 <li>Fog was errantly applied when a fragment shader was enabled (bug 9346)
  65 <li>glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 9445)
  66 <li>With 32-bit Z buffer, the fragment Z of lines and points was sometimes wrong.
  67 <li>GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken.
  68 <li>1D convolution state could effect 2D image transfers
  69 <li>Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521)
  70 <li>Fixed a number of framebuffer/renderbuffer reference counting bugs
  71 <li>Fixed a few bugs in software-emulated alpha planes
  72 <li>Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc.
  73 <li>Assorted DRI driver bug fixes.
  74 <li>Fixed a number of bugs that prevented "depth-peeling" rendering from working.
  75 </ul>
  76
  77
  78 <h2>Internal code changes</h2>
  79 <ul>
  80 <li>Old array_cache module replaced by new vbo module.  All geometry
  81 rendering is now cast in the form of vertex buffer objects.
  82 <li>Massive changes to the Shading Language compiler and related state.
  83 <li>Vertex/fragment shaders are compiled into GPU instructions and
  84 programs very similar to GL_ARB_vertex/fragment_program.
  85 <li>Vertex and fragment programs are executed with the same code now.
  86 <li>The SSE-optimized vertex program path has been removed since it didn't
  87 support more than 12 temp registers, didn't support branching/looping, etc.
  88 </ul>
  89
  90
  91 <h2>To Do (someday) items</h2>
  92 <ul>
  93 <li>Switch to freeglut
  94 <li>Fix linux-glide target/driver.
  95 <li>Improved lambda and derivative calculation for frag progs.
  96 </ul>
  97
  98
  99 <h2>Driver Status</h2>
 100
 101 <pre>
 102 Driver                  Status
 103 ----------------------  ----------------------
 104 DRI drivers             varies with the driver
 105 XMesa/GLX (on Xlib)     implements OpenGL 2.1
 106 OSMesa (off-screen)     implements OpenGL 2.1
 107 Windows/Win32           implements OpenGL 2.1
 108 Glide (3dfx Voodoo1/2)  implements OpenGL 1.3
 109 SVGA                    unsupported
 110 Wind River UGL          unsupported
 111 DJGPP                   unsupported
 112 GGI                     unsupported
 113 BeOS                    unsupported
 114 Allegro                 unsupported
 115 D3D                     unsupported
 116 </pre>
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