docs/relnotes-6.5.3.html

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