+ +

Mesa 6.5.3 Release Notes / April 27, 2007

+ +

+Mesa 6.5.3 is a development release with many changes and new features. +Mesa 7.0 is expected to follow shortly. +

+ + +

MD5 checksums

+39f33ea64e34e2d5b20640b008b57649  MesaLib-6.5.3.tar.gz
+46359457147c469745f24b5074a186f0  MesaLib-6.5.3.tar.bz2
+a8946fa861634ce15971396f47992c41  MesaLib-6.5.3.zip
+08e26948d57eaca74d02a530b2d8106e  MesaDemos-6.5.3.tar.gz
+8af91773ab2653fe537499676b05f2e8  MesaDemos-6.5.3.tar.bz2
+783f81b171bf89b0929abc894efd25a6  MesaDemos-6.5.3.zip
+9467d415388fe1ad82991fb20704b812  MesaGLUT-6.5.3.tar.gz
+360843e46b7ebb6909290b023f9b26fa  MesaGLUT-6.5.3.tar.bz2
+7686065e5c15a30de08a1610860b6840  MesaGLUT-6.5.3.zip
+

+ + +

Shared library numbering

+Mesa 6.5.3 supports the OpenGL 2.0/2.1 API. However, the (unix) +shared library version is still 1.5 (i.e. libGL.so.1.5.xxxxxx). +Bumping the shared library version to 2.x would cause linking problems +with existing OpenGL applications. Since OpenGL 2.x is backward +compatible with OpenGL 1.x the shared library version number doesn't +have to be incremented (which would indicate an incompatible ABI). +

+Other OpenGL vendors name their OpenGL 2.x libraries libGL.so.1.0.xxxxx +for the same reason. +

+ + + +

New features

OpenGL 2.0 and 2.1 API support. +
Entirely new Shading Language code generator. See the +Shading Language page for more information. +
Much faster software execution of vertex, fragment shaders. +
New vertex buffer object (vbo) infrastructure +
Updated glext.h file (version 39) +
Updated glxext.h file (version 19) +
GL_MAX_DRAWBUFFERS is now 4 (software rendering) so + "multiple render targets" are really supported. +

+ +

Bug fixes

Fog was errantly applied when a fragment shader was enabled (bug 9346) +
glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 9445) +
With 32-bit Z buffer, the fragment Z of lines and points was sometimes wrong. +
GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken. +
1D convolution state could effect 2D image transfers +
Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521) +
Fixed a number of framebuffer/renderbuffer reference counting bugs +
Fixed a few bugs in software-emulated alpha planes +
Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc. +
Assorted DRI driver bug fixes. +
Fixed a number of bugs that prevented "depth-peeling" rendering from working. +

+ + +

Internal code changes

Old array_cache module replaced by new vbo module. All geometry +rendering is now cast in the form of vertex buffer objects. +
Massive changes to the Shading Language compiler and related state. +
Vertex/fragment shaders are compiled into GPU instructions and +programs very similar to GL_ARB_vertex/fragment_program. +
Vertex and fragment programs are executed with the same code now. +
The SSE-optimized vertex program path has been removed since it didn't +support more than 12 temp registers, didn't support branching/looping, etc. +

+ + +

To Do (someday) items

Switch to freeglut +
Fix linux-glide target/driver. +
Improved lambda and derivative calculation for frag progs. +

+ + +

Driver Status

+ +

+Driver			Status
+----------------------	----------------------
+DRI drivers		varies with the driver
+XMesa/GLX (on Xlib)	implements OpenGL 2.1
+OSMesa (off-screen)	implements OpenGL 2.1
+Windows/Win32		implements OpenGL 2.1
+Glide (3dfx Voodoo1/2)	implements OpenGL 1.3
+SVGA			unsupported
+Wind River UGL		unsupported
+DJGPP			unsupported
+GGI			unsupported
+BeOS			unsupported
+Allegro			unsupported
+D3D			unsupported
+

+ +

The Mesa 3D Graphics Library

Mesa 6.5.3 Release Notes / April 27, 2007

MD5 checksums

Shared library numbering

New features

Bug fixes

Internal code changes

To Do (someday) items

Driver Status