Mesa 6.5 Release Notes / March 31, 2006

Mesa 6.5 is a new development release.

MD5 checksums

657be3b92f6dabc78a67ed9cb8d67813  MesaLib-6.5.tar.gz
61beda590bfc5b4a12e979d5f2d70d7a  MesaLib-6.5.tar.bz2
694ad3a7007010c7418a9c72d1cba5b7  MesaDemos-6.5.tar.gz
ab95b590dcd640726a2d89e62068c66e  MesaDemos-6.5.tar.bz2
ac1d585483617db0c91e5c15cb5ec3a3  MesaGLUT-6.5.tar.gz
59f0bf2b2ffb67fe23ee479f9b044f31  MesaGLUT-6.5.tar.bz2

New Features

  • OpenGL Shading language support

    This includes the GL_ARB_shader_objects, GL_ARB_shading_language_100, GL_ARB_vertex_shader and GL_ARB_fragment_shader extensions. Most of the work was done by Michal Krol. There’s probably a fair number of bugs since this is a pretty large, complicated body of code.

    The OpenGL 2.0 interface to these features will be implemented in a future version of Mesa,

  • GL_EXT_timer_query

    Used to measure the time of OpenGL operations at high precision. Only supported in the software/Xlib driver at this time.

  • GL_EXT_packed_depth_stencil

    Defines a new GL_DEPTH_STENCIL_EXT pixel format.

  • GL_EXT_framebuffer_blit

    A simplified glCopyPixels-like feature for copying pixel rectangles.

  • GL_ARB_half_float_pixel

    Adds a new half-precision floating point format for image transfers, such as for glDrawPixels, glReadPixels, glTexImage, etc.


  • removed GL_HP_occlusion_test (use GL_ARB_occlusion_query instead)

  • removed GL_SGIX/SGIS_pixel_texture extensions

Bug fixes

  • fixed glxcontextmodes.c datatype problem (bug 5835)

  • fixed aix-gcc build/install bugs (bug 5874)

  • fixed some bugs in texture env program generation

  • glXCopyContext() didn’t handle texture object bindings properly

  • glXCopyContext() didn’t copy all lighting state

  • fixed FreeBSD config (Pedro Giffuni)

  • fixed some minor framebuffer object bugs

  • replaced dprintf() with _glu_printf() in GLU (bug 6244)

  • fixed a number of thread safety bugs/regressions

  • fixed a number of GLU tesselator bugs (John Shell, bug 6339)

  • paletted texturing was broken w/ floating point palettes (K. Schultz)

  • lots of assorted framebuffer object bug fixes

Known Issues

  • Rendering to depth textures will not work. Rendering to GL_DEPTH_STENCIL textures should work.

Driver Interface Changes

  • Stencil: The Driver.StencilOp/Func/Mask() functions have been replaced by the two-sided versions: Driver.Stencil*Separate().

  • Render-to-texture: The functions for rendering to textures have changed.

To Do (someday) items

  • Switch to freeglut


  • Fix linux-glide target/driver.

  • Fix lambda calculation for frag progs.

Driver Status

Driver         Status
----------------------  ----------------------
DRI drivers     varies with the driver
XMesa/GLX (on Xlib) implements OpenGL 1.5
OSMesa (off-screen) implements OpenGL 1.5
Glide (3dfx Voodoo1/2)  implements OpenGL 1.3
SVGA            implements OpenGL 1.3
Wind River UGL      implements OpenGL 1.3
Windows/Win32       implements OpenGL 1.5
DJGPP           implements OpenGL 1.5
GGI         implements OpenGL 1.3
BeOS            implements OpenGL 1.5
Allegro         needs updating
D3D         needs updating