# Mesa 7.9 Release Notes / date TBD

Mesa 7.9 is a new development release. People who are concerned with stability and reliability should stick with a previous release or wait for Mesa 7.9.1.

Mesa 7.9 implements the OpenGL 2.1 API, but the version reported by glGetString(GL_VERSION) depends on the particular driver being used. Some drivers don't support all the features required in OpenGL 2.1.

See the Compiling/Installing page for prerequisites for DRI hardware acceleration.

## MD5 checksums

    tbd

## New features

- New, improved GLSL compiler written by Intel. See the Shading Language page for more information.
- GL_EXT_timer_query extension (i965 driver only)
- GL_EXT_framebuffer_multisample extension (intel drivers, MAX_SAMPLES = 1)
- GL_ARB_texture_swizzle extension (alias of GL_EXT_texture_swizzle)
- GL_ARB_draw_elements_base_vertex, GL_ARB_fragment_program_shadow and GL_EXT_draw_buffers2 in Gallium drivers

## Bug fixes

## Changes

- The Mesa demo/test programs have been moved into a separate git repository.
- GL/glext.h file upgraded to version 64
- GL/glxext.h file upgraded to version 32
- GL/wglext.h file upgraded to version 22