1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html lang="en"> 3<head> 4 <meta http-equiv="content-type" content="text/html; charset=utf-8"> 5 <title>Mesa Release Notes</title> 6 <link rel="stylesheet" type="text/css" href="mesa.css"> 7</head> 8<body> 9 10<h1>Mesa 6.5.3 Release Notes / April 27, 2007</h1> 11 12<p> 13Mesa 6.5.3 is a development release with many changes and new features. 14Mesa 7.0 is expected to follow shortly. 15</p> 16 17 18<h2>MD5 checksums</h2> 19<pre> 2039f33ea64e34e2d5b20640b008b57649 MesaLib-6.5.3.tar.gz 2146359457147c469745f24b5074a186f0 MesaLib-6.5.3.tar.bz2 22a8946fa861634ce15971396f47992c41 MesaLib-6.5.3.zip 2308e26948d57eaca74d02a530b2d8106e MesaDemos-6.5.3.tar.gz 248af91773ab2653fe537499676b05f2e8 MesaDemos-6.5.3.tar.bz2 25783f81b171bf89b0929abc894efd25a6 MesaDemos-6.5.3.zip 269467d415388fe1ad82991fb20704b812 MesaGLUT-6.5.3.tar.gz 27360843e46b7ebb6909290b023f9b26fa MesaGLUT-6.5.3.tar.bz2 287686065e5c15a30de08a1610860b6840 MesaGLUT-6.5.3.zip 29</pre> 30 31 32<h2>Shared library numbering</h2> 33<p> 34Mesa 6.5.3 supports the OpenGL 2.0/2.1 API. However, the (unix) 35shared library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx). 36Bumping the shared library version to 2.x would cause linking problems 37with existing OpenGL applications. Since OpenGL 2.x is backward 38compatible with OpenGL 1.x the shared library version number doesn't 39have to be incremented (which would indicate an incompatible ABI). 40</p> 41<p> 42Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx 43for the same reason. 44</p> 45 46 47 48<h2>New features</h2> 49<ul> 50<li>OpenGL 2.0 and 2.1 API support. 51<li>Entirely new Shading Language code generator. See the 52<a href="shading.html">Shading Language</a> page for more information. 53<li>Much faster software execution of vertex, fragment shaders. 54<li>New vertex buffer object (vbo) infrastructure 55<li>Updated glext.h file (version 39) 56<li>Updated glxext.h file (version 19) 57<li>GL_MAX_DRAWBUFFERS is now 4 (software rendering) so 58 "multiple render targets" are really supported. 59</ul> 60 61<h2>Bug fixes</h2> 62<ul> 63<li>Fog was errantly applied when a fragment shader was enabled (bug 9346) 64<li>glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 9445) 65<li>With 32-bit Z buffer, the fragment Z of lines and points was sometimes wrong. 66<li>GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken. 67<li>1D convolution state could effect 2D image transfers 68<li>Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521) 69<li>Fixed a number of framebuffer/renderbuffer reference counting bugs 70<li>Fixed a few bugs in software-emulated alpha planes 71<li>Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc. 72<li>Assorted DRI driver bug fixes. 73<li>Fixed a number of bugs that prevented "depth-peeling" rendering from working. 74</ul> 75 76 77<h2>Internal code changes</h2> 78<ul> 79<li>Old array_cache module replaced by new vbo module. All geometry 80rendering is now cast in the form of vertex buffer objects. 81<li>Massive changes to the Shading Language compiler and related state. 82<li>Vertex/fragment shaders are compiled into GPU instructions and 83programs very similar to GL_ARB_vertex/fragment_program. 84<li>Vertex and fragment programs are executed with the same code now. 85<li>The SSE-optimized vertex program path has been removed since it didn't 86support more than 12 temp registers, didn't support branching/looping, etc. 87</ul> 88 89 90<h2>To Do (someday) items</h2> 91<ul> 92<li>Switch to freeglut 93<li>Fix linux-glide target/driver. 94<li>Improved lambda and derivative calculation for frag progs. 95</ul> 96 97 98<h2>Driver Status</h2> 99 100<pre> 101Driver Status 102---------------------- ---------------------- 103DRI drivers varies with the driver 104XMesa/GLX (on Xlib) implements OpenGL 2.1 105OSMesa (off-screen) implements OpenGL 2.1 106Windows/Win32 implements OpenGL 2.1 107Glide (3dfx Voodoo1/2) implements OpenGL 1.3 108SVGA unsupported 109Wind River UGL unsupported 110DJGPP unsupported 111GGI unsupported 112BeOS unsupported 113Allegro unsupported 114D3D unsupported 115</pre> 116 117</body> 118</html> 119