1<HTML> 2 3<TITLE>Mesa Release Notes</TITLE> 4 5<head><link rel="stylesheet" type="text/css" href="mesa.css"></head> 6 7<BODY> 8 9<body bgcolor="#eeeeee"> 10 11<H1>Mesa 6.5.3 Release Notes / April 27, 2007</H1> 12 13<p> 14Mesa 6.5.3 is a development release with many changes and new features. 15Mesa 7.0 is expected to follow shortly. 16</p> 17 18 19<h2>MD5 checksums</h2> 20<pre> 2139f33ea64e34e2d5b20640b008b57649 MesaLib-6.5.3.tar.gz 2246359457147c469745f24b5074a186f0 MesaLib-6.5.3.tar.bz2 23a8946fa861634ce15971396f47992c41 MesaLib-6.5.3.zip 2408e26948d57eaca74d02a530b2d8106e MesaDemos-6.5.3.tar.gz 258af91773ab2653fe537499676b05f2e8 MesaDemos-6.5.3.tar.bz2 26783f81b171bf89b0929abc894efd25a6 MesaDemos-6.5.3.zip 279467d415388fe1ad82991fb20704b812 MesaGLUT-6.5.3.tar.gz 28360843e46b7ebb6909290b023f9b26fa MesaGLUT-6.5.3.tar.bz2 297686065e5c15a30de08a1610860b6840 MesaGLUT-6.5.3.zip 30</pre> 31 32 33<h2>Shared library numbering</h2> 34<p> 35Mesa 6.5.3 supports the OpenGL 2.0/2.1 API. However, the (unix) 36shared library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx). 37Bumping the shared library version to 2.x would cause linking problems 38with existing OpenGL applications. Since OpenGL 2.x is backward 39compatible with OpenGL 1.x the shared library version number doesn't 40have to be incremented (which would indicate an incompatible ABI). 41</p> 42<p> 43Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx 44for 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 81rendering 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 84programs 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 87support 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> 102Driver Status 103---------------------- ---------------------- 104DRI drivers varies with the driver 105XMesa/GLX (on Xlib) implements OpenGL 2.1 106OSMesa (off-screen) implements OpenGL 2.1 107Windows/Win32 implements OpenGL 2.1 108Glide (3dfx Voodoo1/2) implements OpenGL 1.3 109SVGA unsupported 110Wind River UGL unsupported 111DJGPP unsupported 112GGI unsupported 113BeOS unsupported 114Allegro unsupported 115D3D unsupported 116</pre> 117 118</body> 119</html> 120