1Mesa 6.5.3 Release Notes / April 27, 2007 2========================================= 3 4Mesa 6.5.3 is a development release with many changes and new features. 5Mesa 7.0 is expected to follow shortly. 6 7MD5 checksums 8------------- 9 10:: 11 12 39f33ea64e34e2d5b20640b008b57649 MesaLib-6.5.3.tar.gz 13 46359457147c469745f24b5074a186f0 MesaLib-6.5.3.tar.bz2 14 a8946fa861634ce15971396f47992c41 MesaLib-6.5.3.zip 15 08e26948d57eaca74d02a530b2d8106e MesaDemos-6.5.3.tar.gz 16 8af91773ab2653fe537499676b05f2e8 MesaDemos-6.5.3.tar.bz2 17 783f81b171bf89b0929abc894efd25a6 MesaDemos-6.5.3.zip 18 9467d415388fe1ad82991fb20704b812 MesaGLUT-6.5.3.tar.gz 19 360843e46b7ebb6909290b023f9b26fa MesaGLUT-6.5.3.tar.bz2 20 7686065e5c15a30de08a1610860b6840 MesaGLUT-6.5.3.zip 21 22Shared library numbering 23------------------------ 24 25Mesa 6.5.3 supports the OpenGL 2.0/2.1 API. However, the (unix) shared 26library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx). Bumping the 27shared library version to 2.x would cause linking problems with existing 28OpenGL applications. Since OpenGL 2.x is backward compatible with OpenGL 291.x the shared library version number doesn't have to be incremented 30(which would indicate an incompatible ABI). 31 32Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx 33for the same reason. 34 35New features 36------------ 37 38- OpenGL 2.0 and 2.1 API support. 39- Entirely new Shading Language code generator. See the :doc:`Shading 40 Language <../shading>` page for more information. 41- Much faster software execution of vertex, fragment shaders. 42- New vertex buffer object (vbo) infrastructure 43- Updated glext.h file (version 39) 44- Updated glxext.h file (version 19) 45- GL_MAX_DRAWBUFFERS is now 4 (software rendering) so "multiple render 46 targets" are really supported. 47 48Bug fixes 49--------- 50 51- Fog was errantly applied when a fragment shader was enabled (bug 52 9346) 53- glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 54 9445) 55- With 32-bit Z buffer, the fragment Z of lines and points was 56 sometimes wrong. 57- GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken. 58- 1D convolution state could effect 2D image transfers 59- Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521) 60- Fixed a number of framebuffer/renderbuffer reference counting bugs 61- Fixed a few bugs in software-emulated alpha planes 62- Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc. 63- Assorted DRI driver bug fixes. 64- Fixed a number of bugs that prevented "depth-peeling" rendering from 65 working. 66 67Internal code changes 68--------------------- 69 70- Old array_cache module replaced by new vbo module. All geometry 71 rendering is now cast in the form of vertex buffer objects. 72- Massive changes to the Shading Language compiler and related state. 73- Vertex/fragment shaders are compiled into GPU instructions and 74 programs very similar to GL_ARB_vertex/fragment_program. 75- Vertex and fragment programs are executed with the same code now. 76- The SSE-optimized vertex program path has been removed since it 77 didn't support more than 12 temp registers, didn't support 78 branching/looping, etc. 79 80To Do (someday) items 81--------------------- 82 83- Switch to freeglut 84- Fix linux-glide target/driver. 85- Improved lambda and derivative calculation for frag progs. 86 87Driver Status 88------------- 89 90:: 91 92 Driver Status 93 ---------------------- ---------------------- 94 DRI drivers varies with the driver 95 XMesa/GLX (on Xlib) implements OpenGL 2.1 96 OSMesa (off-screen) implements OpenGL 2.1 97 Windows/Win32 implements OpenGL 2.1 98 Glide (3dfx Voodoo1/2) implements OpenGL 1.3 99 SVGA unsupported 100 Wind River UGL unsupported 101 DJGPP unsupported 102 GGI unsupported 103 BeOS unsupported 104 Allegro unsupported 105 D3D unsupported 106