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> 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> 117 118 </body> 119 </html> 120
