# Mesa 7.4.1 Release Notes / 18 April 2009

Mesa 7.4.1 is a stable development release fixing bugs since the 7.4 release.

Mesa 7.4.1 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 ardware acceleration.

## MD5 checksums

    tbd

## New features

## Bug fixes

- Fixed a two-sided lighting bug in fixed-function-to-GPU code generation
- Fixed some Darwin issues (Jeremy Huddleston)
- Indexing the GLSL gl_EyePlane[] or gl_ObjectPlane[] arrays with a variable was broken, bug 20986
- Fixed incorrect texture unit bias in TXB instruction
- glTexParameter settings weren't always propogated to drivers
- Assorted vertex/fragment program bug fixes
- Fixed point rendering in software rasterizer
- Fixed potential deadlock in object hash functions
- Fix a couple bugs surrounding front-buffer rendering with DRI2, but this is not quite complete.
- Fixed glPopAttrib() bug when restoring user clip planes

## Changes

## 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