NOTE: Changes for Mesa 6.4 and later are documented in the corresponding release notes file.

Mesa Version History

1.0 beta February 1995

• Initial release

1.1 beta March 4, 1995

Changes:

• faster point and line drawing (2x faster)
• more systems supported, better Makefiles
• Renamed lib*.a files to avoid collisions
• many small bug fixes

New:

• pseudo-GLX functions added
• new implementation of evaluators (eval2.c)
• GLUT support

1.1.1 beta March 7, 1995

Changes:

• Reverted from eval2.c to eval.c due to FPE on Linux
• more speed improvements
• more Makefile changes

1.1.2 beta March 14, 1995

New:

• implementation of SGI's blending extensions
• glXUseXFont implemented
• added MESA_DEBUG environment variable support

Changes:

• Using eval2.c again
• more FPE-prevention checks (0-length normals are OK)
• a few small bug fixes
• much faster pixel logic ops!
• faster transformation arithmetic

1.1.3 beta March 31, 1995

New:

• gluScaleImage() and gluBuild2DMipMaps() implemented
• Mesa widgets for Xt/Motif
• blendEXT demos
• added environment variables for selecting visuals

Changes:

• almost all GLUT demos work correctly now
• faster X device driver functions
• more bug fixes

1.1.4 beta April 20, 1995

Bug fixes:

• missing #define SEEK_SET in src-tk/image.c
• compile glShadeModel into display lists
• fixed pow() domain error in src/light.c
• fixed "flickering bitmaps" in double buffer mode
• fixed tk.h and aux.h for C++
• state of LIGHT_MODEL_LOCAL_VIEWER was inverted

New features:

• MUCH, MUCH nicer dithering in 8-bit RGB mode
• updated widgets and widget demos
• Implemented GLXPixmap functions
• Added GLU 1.1 and GLX 1.1 functions
• Changed the X/Mesa interface API, more versatile
• Implemented gluPartialDisk()

1.2 May 22, 1995

Bug fixes:

• IRIX 4.x makefile problem
• modified tk to share root colormap as needed
• gluLookAt normalization problem
• suppress Expose, NoExpose events in swapbuffers
• glBitmap() and glDrawPixels() clipping

New features:

• GL_BLEND, GL_MODULATE, GL_DECAL, and GL_REPLACE_EXT texture modes implemented
• texture maps stored more efficiently
• texture maps can be compiled into display lists
• Bogdan Sikorski's GLU polygon tesselation code
• Linas Vepstas's sweep and extrusion library
• glXCreateContext()'s shareList parameter works as it's supposed to. XMesaCreateContext() updated to accept a shareList parameter too.
• Mesa can be compiled with real OpenGL .h files
• MESA_BACK_BUFFER environment variable
• better GLX error checking

1.2.1 June 22, 1995

Bug fixes:

• X/Mesa double buffer window resize crash
• widgets now pass PointerMotion events
• X/Mesa incorrect default clear color and drawing color
• more robust X MIT-SHM support in X/Mesa
• glTexImage( format=GL_LUMINANCE ) didn't work
• GL_LINE mode polygons with line width > 1.0 could cause a crash
• numerous feedback bugs
• glReadPixels() from depth buffer was wrong
• error prone depth and stencil buffer allocation New features:
• Preliminary Microsoft Windows driver
• Implemented a number of missing functions: glEvalCoord[12][df]v(), glGet...(), etc.
• Added a few missing symbols to gl.h and glu.h
• Faster rendering of smooth-shaded, RGBA, depth-buffered polygons.
• Faster rendering of lines when width=2.0
• Stencil-related functions now work in display lists

Changes:

• renamed aux.h as glaux.h (MS-DOS names can't start with aux)
• most filenames are in 8.3 format to accomodate MS-DOS
• use GLubytes to store arrays of colors instead of GLints

1.2.2 August 2, 1995

New features:

• texture mapped points and lines
• NURBS! (but not 100% complete)
• viewports may safely extend beyond window boundaries
• MESA_PRIVATE_CMAP environment variable
• Grayscale X display support
• two new demos: demos/gears.c and demos/shadow.c
• MachTen for Macintosh configuration

Bug fixes:

• glGet*(GL_DEPTH_BITS) returned bytes, not bits
• point, line, and bitmap rasterization suffered from roundoff errors
• fixed a division by zero error in line clippping
• occasional wrong default background color really fixed!
• glDepthFunc(GL_ALWAYS) with glDepthMask(GL_FALSE) didn't work
• gluBuild2DMipmaps malloc problem fixed
• view volume clipping of smooth shaded lines resulted in bad colors

Changes:

• new visual selection method in glXChooseVisual()
• improved GLU quadric functions
• call XSync for glFinish and XFlush for glFlush
• glVertex() calls now use a function pointer to avoid conditionals
• removed contrib directory from Mesa tar file (available on ftp site)
• AIX shared library support
• Removed GLUenum type as it's not in OpenGL

1.2.3 September 26, 1995

New features:

• Mesa header files now equivalent to SGI OpenGL headers
• Support for HP's Color Recovery dithering displays
• Faster vertex transformation
• Faster raster operations into X windows under certain conditions
• New configurations: HP w/ shared libs, Ultrix w/ GCC, Data General
• 4-bit visuals now supported

Bug fixes:

• glScissor bug fixed
• round-off errors in clipping lines against clip planes fixed
• byte swapping between hosts and display servers implemented
• glGetError() can be called without a current rendering context
• problem with accidentally culled polygons is fixed
• fixed some widget compilation problems

1.2.4 November 17, 1995

New features:

• More speed improvements (lighting, fogging, polygon drawing)
• Window system and OS-independent off-screen rendering
• Preliminary Fortran bindings
• glPolygonOffsetEXT implemented
• glColorMask and glIndexMask now fully implemented
• glPixelZoom implemented
• display lists fully implemented
• gamma correction
• dithering in 8-bit TrueColor/DirectColor visuals

Changes:

• Improved device driver interface
• tk.h renamed to gltk.h to avoid conflicts with Tcl's Tk
• Dithering support moved from core into device driver

Bug fixes:

• glEnable/Disable( GL_LIGHTING ) didn't always take effect
• glReadPixels byte swapping was broken
• glMaterial with pname==GL_AMBIENT_AND_DIFFUSE was broken
• duplicate glColor4b() prototype in GL/gl.h removed
• stripes in wave -ci demo fixed
• GL_LINEAR_MIPMAP_NEAREST had wrong value
• bugs in HP Color Recovery support fixed
• fixed bug when blending lines, points, bitmaps outside of window

1.2.5 November 30, 1995

New Features:

• updated MS Windows driver
• new implementation of StaticGray/GrayScale visual support

Bug fixes:

• pixelzooming with gamma correction or blending didn't work
• HP color recovery visual wasn't being picked by glXChooseVisual
• glClear didn't always observe glColorMask changes
• olympic and offset demos didn't compile on some Suns
• texcoord clamping wasn't correct
• a polygon optimization introduced an occasional sampling problem

1.2.6 January 26, 1996

New Features:

• faster line and polygon rendering under certain conditions. See Performance Tips 9 and 10 in README
• profiling
• lighting is a bit faster
• better perspective corrected texture mapping
• Amiga AmiWin (X11) support
• preliminary Linux SVGA driver Changes:
• now using a 16-bit depth buffer, faster, smaller
• GL_NORMALIZE is disabled by default

Bug fixes:

• projective texture mapping
• fixed a memory leak in the context destroy function
• GL_POLYGON with less than 3 vertices caused a crash
• glGet*() returned wrong result for GL_INDEX_MODE
• reading pixels from an unmapped X window caused a BadMatch error

1.2.7 March 5, 1996

New:

• faster lighting
• faster 16-bit TrueColor rendering on Linux
• faster 32-bit TrueColor rendering on Linux, HP, IBM
• non-depth-buffered XImage polygons are faster
• vertex array extension
• software alpha planes
• updated Macintosh driver
• new NeXT driver
• GLU quadric functions generate texture coordinates
• reflect.c demo - reflective, textured surface demo

Changes:

• gamma correction code moved into the X driver for better performance

Bug fixes:

• multiple glClipPlane()'s didn't work reliably
• glPolygonMode() didn't always work
• glCullFace( GL_FRONT_AND_BACK ) didn't work
• texture mapping with gamma correction was buggy
• floating point exceptions in texture coordinate interpolation
• XImage byte swapping didn't always work
• polygon edge flags weren't always used correctly

1.2.8 May 22, 1996

New:

• overlay planes on X servers with the SERVER_OVERLAY_VISUALS property
• better monochrome output
• more IRIX 6.x configurations
• more robust RGB mode color allocation
• added MESA_XSYNC environment variable
• GLX_MESA_pixmap_colormap and GLX_EXT_visual_info extensions
• GL_MESA_window_pos extension
• faster glReadPixels/glDrawPixels for GL_DEPTH and GL_UNSIGNED_SHORT and GL_UNSIGNED_INT
• driver for prototype Cirrus Mondello 3-D board
• updated AmigaDOS driver
• a few small speed optimizations in polygon rendering

Changes:

• internal device driver interface modified to simplify device driver implementations and to support hardware Z buffers
• several changes to the X/Mesa interface (xmesa.h)

Bug fixes:

• fixed pow(0,0) domain error triggered on some systems
• glStencilClear() in a display list caused an infinite loop
• glRasterPos*() was sometimes off by +/-0.5 in X and Y
• color masking and blending were performed in wrong order
• auxSolidCylinder() sometimes drew a wire-frame cylinder
• fixed file writing bug in osdemo.c
• pixel mapping didn't always work
• the GL_GEQUAL stencil func didn't work
• the GL_INVERT stencil op didn't work
• the stencil write mask didn't work
• glPush/PopAttrib() didn't do enough error checking
• glIsList() didn't always work correctly

2.0 October 10, 1996

New:

• Implements OpenGL 1.1 API functions
• all texture filtering modes supported (mipmapping)
• faster texture mapping, see Performance Tip 11 in README
• antialiased RGB points
• X support for line and polygon stippling
• glDrawBuffer( GL_FRONT_AND_BACK ) works
• util/ directory of useful stuff
• demos/texobj demo of texture objects

Changes:

• major internal changes for thread-safeness
• new device driver interface
• MESA_ALPHA env variable removed
• triangle rasterizer replaces polygon rasterizer

Bug fixes:

• glPopAttrib() bug
• glDrawBuffer(GL_NONE) works now

2.1 December 14, 1996

New:

• VMS support
• MS-DOS driver
• OpenStep support
• updated, combined Windows 95/NT driver
• implemented glGetLighti() and glGetTexGen*()
• GLX does garbage collection of ancillary buffers

Bug fixes:

• removed unused _EXT constants from gl.h
• fixed polygon offset bugs
• Z coordinates of clipped lines were incorrect
• glEdgeFlag() in display lists didn't always work
• glLight*() in display lists didn't work
• fixed X line stipple bugs (Michael Pichler)
• glXUseXfonts XFreeFont/XFreeFontInfo bug fixed
• fixed a feedback bug
• glTexGen*() now transforms GL_EYE_PLANE by inverse modelview matrix
• polygons were sometimes culled instead of clipped
• triangle rasterizer suffered from float/int overflow exceptions
• fixed FP underflow exception in lighting (specular exponent)
• glEnable/glDisable of GL_EXT_vertex_array enums didn't work
• fixed free(NULL) in GLU tesselator code
• using 24-bit color on some X servers resulted in garbage rendering
• 32-bit per pixel mode for XFree86 now works
• glRotate(a,0,0,0) gave unpredictable results
• GL_LINE_STRIP with > 480 vertices had occasional clipping problems
• 8-bit TrueColor GLXPixmap rendering incorrectly required a colormap
• glMaterial() wasn't ignored when GL_COLOR_MATERIAL was enabled
• glEnable(GL_COLOR_MATERIAL) followed by glColor() didn't work right
• accumulation buffer was limited to positive values
• projective textures didn't work
• selection buffer overflows weren't handled correctly

Changes:

• restored the GL_EXT_polygon_offset extension
• slightly faster RGB dithering
• the SVGA driver works again
• Amiga driver now distributed separately
• NeXT driver updated for Mesa 2.x

2.2 March 14, 1997

New:

• better color selection when dithering
• added GL_EXT_texture_object extension
• updated MS-DOS driver for DJGPP
• added openbsd make configuration
• faster dithered flat-shaded triangles
• various compilation problems with Motif widgets fixed
• gl.h, glx.h and glu.h name mangling option
• BeOS driver
• 3D texture mapping extension
• GL_MESA_resize_buffers extension
• morph3d, stex3d and spectex demos
• 3Dfx support

Bug fixes:

• glColorMaterial should finally work right in all respects
• linear interpolation of mipmap levels was incorrectly weighted
• readpix.c didn't compile on Macintosh
• GL_INVERT and related logic ops didn't work right
• glTexImage[12]D() didn't check its parameters consistantly
• fixed a memory leak in glTexImage[12]D()
• kludged around a SunOS 5.x/GCC compiler bug in the feedback code
• glReadPixels aborted instead of normally catching some errors
• a few 1.1 constants were missing or misnamed in gl.h
• glBegin(p); glBegin(q); didn't generate an error
• fixed a memory leak in GLX code
• clipping of concave polygons could cause a core dump
• 1-component alpha texture maps didn't work
• fixed a GLU polygon tesselator bug
• polygons with colinear vertices were sometimes culled
• feedback triangle colors were wrong when using smooth shading
• textures with borders didn't work correctly
• colors returned in feedback mode were wrong when using lighting
• spotlights didn't effect ambient lighting correctly
• gluPartialDisk() had a few bugs

Changes:

• device driver interface expanded to support texture mapping
• faster matrix inversion subroutine
• commented out #include "wmesa_extend.h" from src/wmesa.c
• fixed many compiler warnings in the demo programs

2.3 June 30, 1997

New:

• Mesa distribution divided into two pieces: library code and demos
• faster vertex transformation, clip testing, lighting
• faster line drawing
• TrueColor visuals how have dithering (for depths < 24 bits)
• added MESA_NO_DITHER environment variable
• new device driver function: NearFar(), RenderVB(), RasterSetup()
• added LynxOS configuration
• added cygnus Win32 configuration
• added texcyl.c GLUT demo
• added XMesaDitherColor() to X/Mesa interface
• new NURBS code from Bogdan Sikorski
• added demos/shape.c (non-rectangular X window!)

Bug fixes:

• glEnable/DisableClientState() were missing from GL/gl.h
• GL_SPHERE_MAP texcoord generation didn't work correctly
• glXGetConfig() returned wrong number of depth, stencil, accum bits
• glDrawPixels feedback/selection didn't examine RasterPos valid bit
• black and white were reversed on some monochrome displays
• fixed potential image memory leak (wasn't setting reference counter)
• glDrawPixels sometimes didn't recognize some GL state changes
• gluProject/UnProject() didn't check for divide by zero
• stex3d demo called random() and srandom(), not portable
• fixed memory leaks in context.c and drawpix.c
• fixed NULL dereferencing problem in gl_update_texture_state()
• glReadPixels between glBegin/glEnd didn't generate an error.
• fixed memory leak in polygon tesselator (Randy Frank)
• fixed seg fault bug drawing flat-shaded, depth-tested lines
• clipped GL_TRIANGLE_STRIPs sometimes had wrong color when flat-shaded
• glBindTexture sometimes didn't work
• fixed a bug deep in glXReleaseBuffersMESA()
• fog was mistakenly applied to alpha
• glPopMatrix didn't set "dirty matrix" flag
• glPolygonStipple pattern was sometimes wrong
• glClear wasn't disabled during feedback and selection
• fixed memory leak in glTexSubImage[123]D

Changes:

• many library source files reorganized
• faster X color allocation, colors also freed when finished with them
• new texture sampling function pointer in texture objects
• incorporated 3Dfx VooDoo driver v0.16 into main source tree
• many 3Dfx driver updates
• cygnus Makefiles now included
• updated DOS driver
• made a few changes to dosmesa.c and wmesa.c (VB->Unclipped)
• internally, colors now stored in GLubytes, not GLfixed
• optimized changing of GL_SHININESS parameter

2.4 September 18, 1997

New:

• updated 3Dfx Glide driver
• hacks for 3Dfx rendering into an X window or fullscreen
• added depth buffer access functions to X/Mesa and OS/Mesa interfaces

Bug fixes:

• pixel buffer could overflow with long, wide lines
• fixed FP underflow problems in lighting
• glTexSubImage1D() had an unitialized variable
• incomplete texture objects could cause a segfault
• glDrawPixels with GL_COMPILE_AND_EXECUTE caused infinite loop
• flat-shaded quads in a strip were miscolored if clipped
• mipmapped triangle lod computation now works correctly
• fixed a few under/overflow bugs in triangle rasterizer
• glArrayElement() assigned bad normal if normal array disabled
• changed argument to glXReleaseBuffersMESA()
• fixed small triangle underflow bugs in tritemp.h (hopefully)
• glBindTexture(target, 0) caused a crash
• glTexImage[123]D() with NULL image pointer caused crash
• glPixelStore parameters are now ignored during display list execution
• fixed a two-sided lighting w/ clipping bug (black vertices)
• textures with width!=height were sometimes mis-rendered
• "weird" projection matrices could cause div by 0, other fp errors

Changes:

• changed precompiled header symbol from PCH to PC_HEADER
• split api.c into api1.c and api2.c
• added hash.c source file (but not used yet)
• a few Sun and HP configuration file changes
• MESA_GLX_FX env var replaces MESA_FX_WINDOW and MESA_FX_FULLSCREEN
• fixed a few cygnus build problems (src/Makefile.cygnus, src/wmesa.c)

2.5 November 20, 1997

New:

• updated 3Dfx driver (v20) for GLQuake
• added GL_EXT_paletted_texture extension
• added GL_EXT_shared_texture_palette extension
• added GL_EXT_point_parameters extension
• now including Mark Kilgard's GLUT library v3.6
• new GLUT-based demos in gdemos/
• added a few more Unix config targets
• added Intel X86 assembly language vertex transformation code
• 3Dfx/Glide driver for Mesa now recognizes SST_SCREENREFRESH env var
• Windows 95 S3 Virge driver

Bug fixes:

• glCopyTexImage?D would crash due to uninitialized variable
• glColor w/ glColorMaterial in a display list caused a bug
• fixed several glDrawPixels() and ReadPixels() bugs in 3Dfx driver
• glVertex4*() vertices weren't always projected correctly
• trying to use mipmapped textured points or lines caused crash
• glColor[34][fd]() values now clamped to [0,1] before int conversion

Changes:

• new device driver functions for texture mapping
• hash tables used for display list and texture object lookup
• fixed GLX visual handling code to avoid saving redundant visuals
• 3Dfx Glide libraries automatically linked to libMesaGL.so
• dropped the Cirrus Logic Mondello code since it's obsolete
• updated Cygnus Makefiles (Stephane Rehel)
• updated Windows MSVC++ Makefiles (Oleg Letsinsky)
• procedure for making library files has changed: scripts now take a major and minor version arguments. Make-config changed a lot.
• new implementation of glTexSubImage2D()
• updated widgets-mesa directory to create libMesaGLwM.a (Motif widget)
• separate linux-glide and linux-386-glide configurations

2.6 February 12, 1998

New:

• Windows WGL functions
• updated VMS, DOS, Windows, Cygnus, BeOS, Amiga compilation support
• v0.22 of 3Dfx Glide driver
• more X86 assembly language optimizations
• faster blending for some modes
• XMesaSetFXmode() to switch between 3Dfx window and full-screen mode
• added preliminary thread support
• added GLX_MESA_copy_sub_buffer extension
• some clipping optimizations

Bug fixes:

• fixed shading/material bug when drawing long primitive strips
• fixed clipping problem in long primitive strips
• fixed clipping bug when using 3Dfx driver
• fixed a problem when trying to use X fonts w/ 3Dfx driver
• fixed a texture filter bug in 3Dfx/Glide driver
• fixed bug in 3Dfx/Glide driver involving depth mask & clearing
• glLoadMatrix to set projection matrix confused the 3Dfx driver
• non-identity texture matrices didn't work with linux-386 configs
• glGenTextures() didn't reserve the returned texture IDs
• NULL proxy image sent to glTexImageXD() caused crash
• added texture state validation optimization (Henk Kok)
• fixed colormap reuse problem when using both RGB and CI windows
• 32bpp True/DirectColor X visuals weren't recognized
• fixed potential problem in evaluators memory allocation
• fixed assorted demo compilation bugs

Changes:

• replaced old Mesa/windows/ directory with Mesa/WIN32/ directory
• converted a few old glaux/gltk demos to GLUT
• renamed directories: demos -> xdemos, gdemos -> demos

3.0 September 17, 1998

New:

• OpenGL 1.2 API
• GL_EXT_abgr pixel format extension
• GL_SGIS_texture_edge_clamp extension
• GL_SGIS_multitexture extension (to be replaced by GL_ARB_multitex)
• GL_EXT_multitexture extension (to be replaced by GL_ARB_multitex)
• GL_EXT_rescale_normal extension and renormal.c demo
• GLX_SGI_video_sync extension (a no-op)
• antialiased lines
• glGetTexImage() now implemented
• glDraw/Copy/ReadPixels() optimizations
• optimized textured triangle code (Marten Stromberg)
• more optimization of dithered TrueColor triangles in X driver
• Linux GGI driver
• updated MGL driver

Bug fixes:

• lots of assorted compilation fixes
• glInitNames didn't write initial hit record
• glBitmap didn't always check for invalid raster position
• switching between GLX and OSMesa contexts caused a crash
• fixed uninitialized variable in Mesa widget code
• fixed typo in texture code which caused book/texgen to crash
• fixed texture sampling bug when filter=GL_LINEAR and wrap=GL_CLAMP
• gluDisk() in POINT or LINE mode sometimes failed
• fixed texture + fog bug
• GL_COMPILE_AND_EXECUTE mode didn't work reliably
• glMultMatrix in projection matrix mode w/ 3Dfx driver could fail
• glDrawPixels(color index pixels) weren't converted to RGBA
• fixed possible getenv() buffer overflow security bug
• glBitmap in feedback mode was offset by xOrig, yOrig params
• device driver's DrawPixels hook was never used
• glDrawPixels with zoomY!=1 and top/bottom clipping didn't work
• glDrawPixels optimized for GL_LUMINANCE, GL_LUMINANCE_ALPHA, GLubyte
• fixed MakeCurrent bug in GLwRedrawObjects() in MesaWorkstation.c
• glCopyTexSubImage2D() didn't work with 3Dfx driver
• lines with width = 2 could cause crash
• glClear with scissor rect sometimes cleared whole buffer
• glTexSubImage2D( .. GL_COLOR_INDEX .. ) didn't work
• glTexImageXD( .. GL_ABGR_EXT .. ) didn't work
• computation of inverse modelview matrix sometimes failed
• fixed GL_CLAMP mode texture sampling bug
• textured line interpolation was somewhat broken
• textured triangle interpolation was also somewhat broken
• glGet(MODELVIEW/PROJECTION/TEXTURE_MATRIX_STACK_DEPTH) off by one
• evaluator state wasn't fully initialized
• texture coordinate clipping was buggy
• evaluator surfaces could be mis-colored
• glAccum(GL_RETURN, s) didn't obey glColorMask() settings
• zero area polygons shouldn't be culled if polygon mode is point/line
• clipped width and height of glReadPixels was sometimes off by one
• blending with alpha = 0 or 1.0 wasn't always exact
• reading of pixels from clipped region was buggy
• minor tweaking of X visual management in GLX emulator
• glPolygonStipple now obeys pixel unpacking parameters
• glGetPolygonStipple now obeys pixel packing parameters
• interleaved vertex array texture coordinates were broken
• query of proxy texture internal format was broken
• alpha channel wasn't reliably cleared
• fixed divide by zero error in gluScaleImage if dest size = 1 x 1

Conformance bug fixes:

• GL_SELECTION_BUFFER_POINTER and GL_SELECTION_BUFFER_SIZE were missing
• GL_TEXTURE_INTERNAL_FORMAT was missing
• glGet*(GL_POLYGON_STIPPLE) was broken
• glPush/PopAttrib() didn't save/restore all texture state
• glBitmap in feedback mode didn't work
• feedback of texture coords didn't always work
• glDrawPixels w/ format=GL_DEPTH_COMPONENT, type=GLbyte was broke
• glDrawPixels w/ format=GL_DEPTH_COMPONENT, type=GLubyte was broke
• glDrawPixels w/ format=GL_STENCIL_INDEX, type=GL_BITMAP was broke

Changes:

• upgraded GLUT to version 3.7
• only GL and GLU library code included in MesaLib.tar.gz
• GLUT and all demos now in MesaDemos.tar.gz
• glaux and gltk libraries removed
• IRIX -n32 and -64 libs go in lib32/ and lib64/ directories

3.1 beta 1 November 19, 1998

New:

• GL_EXT_stencil_wrap extension
• GL_INGR_blend_func_separate extension
• GL_ARB_multitexture extension
• GL_NV_texgen_reflection extension
• newly optimized vertex transformation code
• updated GLUT 3.7 code
• better precision when using 32-bit Z buffer
• Allegro DJGPP driver

Bug fixes:

• glCopyPixels between front/back buffers didn't copy alpha correctly
• fixed out-of-bounds memory access in optimized 2-D texture code
• glPixelStorei didn't accept GL_PACK/UNPACK_IMAGE_HEIGHT parameter
• glGet*() didn't accept GL_MAX_3D_TEXTURE_SIZE parameter
• clipping of texture coordinates sometimes had bad R,Q values
• GL_CLAMP_TO_EDGE texture sampling was off by 0.5 texels
• glEdgeFlagPointer() now takes a GLvoid * instead of GLboolean *
• texture was sometimes applied twice with 3Dfx driver
• glPush/PopAttrib() fouled up texture object reference counts
• glDeleteLists(0, n) caused assertion failure
• bilinear texture sampling wasn't accurate enough
• glClear w/ glDepthMask(GL_FALSE) didn't work right on 3Dfx
• color components were reversed on big endian 32 bpp X visuals

Changes:

• removed GL_EXT_multitexture extension

3.1 beta 2 May 24, 1999

New:

• multi-textured points and lines (mjk@nvidia.com)
• optimized 24bpp X rendering (bernd.paysan@gmx.de)
• added allegro support (bernie-t@geocities.com)
• cleaned-up Windows-related stuff (Ted Jump)
• minor stereo changes (KendallB@scitechsoft.com)
• new BeOS driver which implements BGLView class
• new Direct3D driver (see src/D3D)
• more efficient filled gluCylinder() function
• utilities: util/showbuffer.[ch] and util/glstate.[ch]
• fixed some IRIX compiler warnings
• added support for building Mesa in XFree86 with SGI's GLX (kevin@precisioninsight.com)

Bug fixes:

• a variety of Windows/Mesa bug fixes (mjk@nvidia.com)
• packed pixel images weren't unpacked correctly
• patches some win32 files in GLUT (mjk@nvidia.com)
• glTexImage[123]D() didn't accept internalFormat == GL_COLOR_INDEX
• fixed lighting bug in Keith's new shading code
• fixed texture segfault seen in Lament screensaver
• fixed miscellaneous low-memory bugs
• glClear(GL_COLOR_BUFFER_BIT) with RGBA or CI masking was broken
• GL_LINEAR sampling of 3D textures was broken
• fixed SVR4 'cc' compiler macro problem (dawes@xfree86.org)
• added GL_TEXTURE_PRIORITY fix (keithh@netcomuk.co.uk)
• fixed wide point and wide line conformance bugs (brianp)

Changes:

• some device driver changes (see src/dd.h)
• new copyright on core Mesa code

3.1 beta 3 September 17, 1999

New:

• optimized glAccum function
• optimized 24bpp rendering in XMesa driver
• GLU 1.2 polygon tessellator

Bug Fixes:

• glGetTexLevelParameter wasn't fully implemented
• glXUseXFont now handles multi-byte fonts
• glIsEnabled(GL_TEXTURE_2D / 3D) returned wrong result
• alpha channel of blending points, lines was sometimes incorrect

Changes:

• New library names: "libGL" instead of "libMesaGL"
• New library numbering: libGL.so.1.2.310
• New subdirectories: docs/ and bin/
• New Makefile-system (autoconf,automake,libtool)

3.1 final December 14, 1999

New:

• added demos/gloss.c
• added xdemos/glxdpyinfo.c
• added GLX_ARB_get_proc_address extension
• rewritten glTexImage code paths (faster, less memory, bug fixes)

Bug Fixes:

• several vertex array bug fixes
• overlapping glCopyPixels with pixel zooming now works
• glXUseXFont() bitmaps were vertically shifted by one pixel
• glCopyPixels with pixel zooming now works

3.2 final April 24, 2000

Bug fixes:

• fixed memcpy bugs in span.c
• fixed missing glEnd problem in demos/tessdemo.c
• fixed bug when clearing 24bpp Ximages
• fixed clipping problem found in Unreal Tournament
• fixed Loki's "ice bug" and "crazy triangles" seen in Heretic2
• fixed Loki's 3dfx RGB vs BGR bug
• fixed Loki's 3dfx smooth/flat shading bug in SoF

Changes:

• updated docs/README file
• use bcopy() optimizations on FreeBSD
• re-enabled the optimized persp_textured_triangle() function

3.2.1 July 19, 2000

Bug fixes:

• gluBuild2DMipmaps() didn't accept GL_BGRA
• Fixed compile/makefile problems on IRIX
• fixed segfault in 3dfx driver when using GL selection/feedback
• no longer cull very, very tiny triangles
• blending w/ drawbuffer==GL_FRONT_BACK caused segfault (sw rendering)
• fixed Motif detection code in widgets-mesa/configure.in
• glColorMaterial and glMaterial updates to emissive and ambient didn't always work right
• Specular highlights weren't always in the right place
• clipped GL_LINE mode polygons had interior lines appear
• blend term GL_ONE_MINUS_CONSTANT_ALPHA was broken
• GL_NICEST fog didn't always work with flat shading
• glRect commands in display lists were sometimes miscolored
• Line Z offset didn't always work
• fixed texgen normal vector problem (gloss's teapot)
• numerous GL conformance bugs fixed

Changes:

• glColorMask(false, false, false, false) handled better/faster
• reverted to old GLU polygon tessellator, GLU 1.1
• updated Win32 build files

3.3 July 21, 2000

New:

• antialiased triangles now implemented
• GL_EXT_texture_env_add texture mode extension
• GLX 1.3 API
• support for separate draw/read buffers (ie GL_SGI_make_current_read)
• thread-safe API dispath
• improved glxinfo program
• demos/texdown program to measure texture download performance
• glext.h header file
• demos/geartrain program
• GL_EXT_texture_lod_bias extension
• demos/lodbias program
• further optimized glRead/DrawPixels for 16-bit TrueColor X visuals
• GLX_EXT_visual_rating extension (a no-op, however)
• GL_HP_occlusion_test extension (for X and OS/Mesa drivers)
• demos/occlude program
• GL_SGIS_pixel_texture and GL_SGIX_pixel_texture extensions
• demos/pixeltex program
• GL_SGI_color_matrix extension
• GL_SGI_color_table extension
• GL_EXT_histogram extension
• GL_ARB_texture_cube_map extension
• added xdemos/glxheads and xdemos/manywin
• demos/texenv.c demo
• GL_EXT_texture_env_combine extension (by Holger Waechtler)
• Xlib driver is now thread-safe (see xdemos/glthreads)

Bug Fixes:

• various GL conformance failures fixed since 3.2.1

Changes:

• gl.h now uses #defines instead of C enums for all tokens
• glu.h now uses #defines instead of C enums for all tokens
• moved programs from 3Dfx/demos/ into demos/ directory

3.4 November 3, 2000

New:

• optimized glDrawPixels for glPixelZoom(1,-1) Bug Fixes:
• widgets-mesa/src/*.c files were missing from 3.3 distro
• include/GL/mesa_wgl.h file was missing from 3.3 distro
• fixed some Win32 compile problems
• texture object priorities weren't getting initialized to 1.0
• glAreTexturesResident return value was wrong when using hardware
• glXUseXFont segfaulted when using 3dfx driver (via MESA_GLX_FX)
• glReadPixels with GLushort packed types was broken
• fixed a few bugs in the GL_EXT_texture_env_combine texture code
• glPush/PopAttrib(GL_ENABLE_BIT) mishandled multi-texture enables
• fixed some typos/bugs in the VB code
• glDrawPixels(GL_COLOR_INDEX) to RGB window didn't work
• optimized glDrawPixels paths weren't being used
• per-fragment fog calculation didn't work without a Z buffer
• improved blending accuracy, fixes Glean blendFunc test failures
• glPixelStore(GL_PACK/UNPACK_SKIP_IMAGES) wasn't handled correctly
• glXGetProcAddressARB() didn't always return the right address
• gluBuild[12]DMipmaps() didn't grok the GL_BGR pixel format
• texture matrix changes weren't always detected (GLUT projtex demo)
• fixed random color problem in vertex fog code
• fixed Glide-related bug that let Quake get a 24-bit Z buffer

Changes:

• finished internal support for compressed textures for DRI

3.4.1 February 14, 2001

New:

• fixed some Linux build problems
• fixed some Windows build problems
• GL_EXT_texture_env_dot3 extension (Gareth Hughes)

Bug fixes:

• added RENDER_START/RENDER_FINISH macros for glCopyTexImage in DRI
• various state-update code changes needed for DRI bugs
• disabled pixel transfer ops in glColorTable commands, not needed
• fixed bugs in glCopyConvolutionFilter1D/2D, glGetConvolutionFilter
• updated sources and fixed compile problems in widgets-mesa/
• GLX_PBUFFER enum value was wrong in glx.h
• fixed a glColorMaterial lighting bug
• fixed bad args to Read/WriteStencilSpan in h/w stencil clear function
• glXCopySubBufferMESA() Y position was off by one
• Error checking of glTexSubImage3D() was broken (bug 128775)
• glPopAttrib() didn't restore all derived Mesa state correctly
• Better glReadPixels accuracy for 16bpp color - fixes lots of OpenGL conformance problems at 16bpp.
• clearing depth buffer with scissoring was broken, would segfault
• OSMesaGetDepthBuffer() returned bad bytesPerValue value
• fixed a line clipping bug (reported by Craig McDaniel)
• fixed RGB color over/underflow bug for very tiny triangles

Known problems:

• NURBS or evaluator surfaces inside display lists don't always work

3.4.2 May 17, 2001

Bug fixes:

• deleting the currently bound texture could cause bad problems
• using fog could result in random vertex alpha values
• AA triangle rendering could touch pixels outside right window bound
• fixed byteswapping problem in clear_32bit_ximage() function
• fixed bugs in wglUseFontBitmapsA(), by Frank Warmerdam
• fixed memory leak in glXUseXFont()
• fragment sampling in AA triangle function was off by 1/2 pixel
• Windows: reading pixels from framebuffer didn't always work
• glConvolutionFilter2D could segfault or cause FP exception
• fixed segfaults in FX and X drivers when using tex unit 1 but not 0
• GL_NAND logicop didn't work right in RGBA mode
• fixed a memory corruption bug in vertex buffer reset code
• clearing the softwara alpha buffer with scissoring was broken
• fixed a few color index mode fog bugs
• fixed some bad assertions in color index mode
• fixed FX line 'stipple' bug #420091
• fixed stencil buffer clear width/height typo
• fixed GL error glitches in gl[Client]ActiveTextureARB()
• fixed Windows compilation problem in texutil.c
• fixed 1/8-pixel AA triangle sampling error

Changes:

• optimized writing mono-colored pixel spans to X pixmaps
• increased max viewport size to 2048 x 2048

3.5 June 21, 2001

New:

• internals of Mesa divided into modular pieces (Keith Whitwell)
• 100% OpenGL 1.2 conformance (passes all conformance tests)
• new AA line algorithm
• GL_EXT_convolution extension
• GL_ARB_imaging subset
• OSMesaCreateContextExt() function
• GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
• GL_MAX_TEXTURE_UNITS_ARB now defaults to eight
• GL_EXT_fog_coord extension (Keith Whitwell)
• GL_EXT_secondary_color extension (Keith Whitwell)
• GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
• GL_SGIX_depth_texture extension
• GL_SGIX_shadow and GL_SGIX_shadow_ambient extensions
• demos/shadowtex.c demo of GL_SGIX_depth_texture and GL_SGIX_shadow
• GL_ARB_texture_env_combine extension
• GL_ARB_texture_env_dot3 extension
• GL_ARB_texture_border_clamp (aka GL_SGIS_texture_border_clamp)
• OSMesaCreateContextExt() function
• libOSMesa.so library, contains the OSMesa driver interface
• GL/glxext.h header file for GLX extensions
• somewhat faster software texturing, fogging, depth testing
• all color-index conformance tests now pass (only 8bpp tested)
• SPARC assembly language TCL optimizations (David Miller)
• GL_SGIS_generate_mipmap extension

Bug Fixes:

• fbiRev and tmuRev were unitialized when using Glide3
• fixed a few color index mode conformance failures; all pass now
• now appling antialiasing coverage to alpha after texturing
• colors weren't getting clamped to [0,1] before color table lookup
• fixed RISC alignment errors caused by COPY_4UBV macro
• drawing wide, flat-shaded lines could cause a segfault
• vertices now snapped to 1/16 pixel to fix rendering of tiny triangles

Changes:

• SGI's Sample Implementation (SI) 1.3 GLU library replaces Mesa GLU
• new libOSMesa.so library, contains the OSMesa driver interface

4.0 October 22, 2001

New:

• Mesa 4.0 implements the OpenGL 1.3 specification
• GL_IBM_rasterpos_clip extension
• GL_EXT_texture_edge_clamp extension (aka GL_SGIS_texture_edge_clamp)
• GL_ARB_texture_mirrored_repeat extension
• WindML UGL driver (Stephane Raimbault)
• added OSMESA_MAX_WIDTH/HEIGHT queries
• attempted compiliation fixes for Solaris 5, 7 and 8
• updated glext.h and glxext.h files
• updated Windows driver (Karl Schultz)

Bug fixes:

• added some missing GLX 1.3 tokens to include/GL/glx.h
• GL_COLOR_MATRIX changes weren't recognized by teximage functions
• glCopyPixels with scale and bias was broken
• glRasterPos with lighting could segfault
• glDeleteTextures could leave a dangling pointer
• Proxy textures for cube maps didn't work
• fixed a number of 16-bit color channel bugs
• fixed a few minor memory leaks
• GLX context sharing was broken in 3.5
• fixed state-update bugs in glPopClientAttrib()
• fixed glDrawRangeElements() bug
• fixed a glPush/PopAttrib() bug related to texture binding
• flat-shaded, textured lines were broken
• fixed a dangling pointer problem in the XMesa code (Chris Burghart)
• lighting didn't always produce the correct alpha value
• fixed 3DNow! code to not read past end of arrays (Andrew Lewycky)

4.0.1 December 17, 2001

New:

• better sub-pixel sample positions for AA triangles (Ray Tice)
• slightly faster blending for (GL_ZERO, GL_ONE) and (GL_ONE, GL_ZERO)

Bug fixes:

• added missing break statements in glGet*() for multisample cases
• fixed uninitialized hash table mutex bug (display lists / texobjs)
• fixed bad teximage error check conditional (bug 476846)
• fixed demos readtex.c compilation problem on Windows (Karl Schultz)
• added missing glGet() query for GL_MAX_TEXTURE_LOD_BIAS_EXT
• silence some compiler warnings (gcc 2.96)
• enable the #define GL_VERSION_1_3 in GL/gl.h
• added GL 1.3 and GLX 1.4 entries to gl_mangle.h and glx_mangle.h
• fixed glu.h typedef problem found with MSDev 6.0
• build libGL.so with -Bsymbolic (fixes bug found with Chromium)
• added missing 'const' to glXGetContextIDEXT() in glxext.h
• fixed a few glXGetProcAddress() errors (texture compression, etc)
• fixed start index bug in compiled vertex arrays (Keith)
• fixed compilation problems in src/SPARC/glapi_sparc.S
• fixed triangle strip "parity" bug found in VTK medical1 demo (Keith)
• use glXGetProcAddressARB in GLUT to avoid extension linking problems
• provoking vertex of flat-shaded, color-index triangles was wrong
• fixed a few display list bugs (GLUT walker, molecule, etc) (Keith)
• glTexParameter didn't flush the vertex buffer (Ray Tice)
• feedback attributes for glDraw/CopyPixels and glBitmap were wrong
• fixed bug in normal length caching (ParaView lighting bug)
• fixed separate_specular color bug found in Chimera (18 Dec 2001)

4.0.2 April 2, 2002

New:

• New DOS (DJGPP) driver written by Daniel Borca
• New driver interface functions for TCL drivers (such as Radeon DRI)
• GL_RENDERER string returns "Mesa Offscreen16" or "Mesa Offscreen32" if using deep color channels
• latest GL/glext.h and GL/glxext.h headers from SGI

Bug fixes:

• GL_BLEND with non-black texture env color wasn't always correct
• GL_REPLACE with GL_RGB texture format wasn't always correct (alpha)
• glTexEnviv( pname != GL_TEXTURE_ENV_COLOR ) was broken
• glReadPixels was sometimes mistakenly clipped by the scissor box
• glDraw/ReadPixels didn't catch all the errors that they should have
• Fixed 24bpp rendering problem in Windows driver (Karl Schultz)
• 16-bit GLchan mode fixes (m_trans_tmp.h, s_triangle.c)
• Fixed 1-bit float->int conversion bug in glDrawPixels(GL_DEPTH_COMP)
• glColorMask as sometimes effecting glXSwapBuffers()
• fixed a potential bug in XMesaGarbageCollect()
• N threads rendering into one window didn't work reliably
• glCopyPixels didn't work for deep color channels
• improved 8 -> 16bit/channel texture image conversion (Gerk Huisma)
• glPopAttrib() didn't correctly restore user clip planes
• user clip planes failed for some perspective projections (Chromium)

Known bugs:

• mipmap LOD computation

4.0.3 June 25, 2002

New:

• updated GL/glext.h file (version 15)
• corrected MMX blend code (Jose Fonseca)
• support for software-based alpha planes in Windows driver
• updated GGI driver (Filip Spacek)

Bug fixes:

• glext.h had wrong values for GL_DOT3_RGB[A]_EXT tokens
• OSMesaMakeCurrent() didn't recognize buffer size changes
• assorted conformance fixes for 16-bit/channel rendering
• texcombine alpha subtraction mode was broken
• fixed lighting bug with non-uniform scaling and display lists
• fixed bug when deleting shared display lists
• disabled SPARC cliptest assembly code (Mesa bug 544665)
• fixed a couple Solaris compilation/link problems
• blending clipped glDrawPixels didn't always work
• glGetTexImage() didn't accept packed pixel types
• glPixelMapu[is]v() could explode given too large of pixelmap
• glGetTexParameter[if]v() didn't accept GL_TEXTURE_MAX_ANISOTROPY_EXT
• glXCopyContext() could lead to segfaults
• glCullFace(GL_FRONT_AND_BACK) didn't work (bug 572665)

Changes:

• lots of C++ (g++) code clean-ups
• lots of T&L updates for the Radeon DRI driver

Known bugs:

• mipmap LOD computation (fixed for Mesa 4.1)

4.0.4 October 3, 2002

New:

• GL_NV_texture_rectangle extension
• updated glext.h header (version 17)
• updated DOS driver (Daniel Borca)
• updated BeOS R5 driver (Philippe Houdoin)
• added GL_IBM_texture_mirror_repeat
• glxinfo now takes -l option to print interesting OpenGL limits info
• GL_MESA_ycbcr_texture extension
• GL_APPLE_client_storage extension (for some DRI drivers only)
• GL_MESA_pack_invert extension

Bug fixes:

• fixed GL_LINEAR fog bug by adding clamping
• fixed FP exceptions found using Alpha CPU
• 3dfx MESA_GLX_FX=window (render to window) didn't work
• fixed memory leak in wglCreateContest (Karl Schultz)
• define GLAPIENTRY and GLAPI if undefined in glu.h
• wglGetProcAddress didn't handle all API functions
• when testing for OpenGL 1.2 vs 1.3, check for GL_ARB_texture_cube_map
• removed GL_MAX_CONVOLUTION_WIDTH/HEIGHT from glGetInteger/Float/etc()
• error checking in compressed tex image functions had some glitches
• fixed AIX compile problem in src/config.c
• glGetTexImage was using pixel unpacking instead of packing params
• auto-mipmap generation for cube maps was incorrect

Changes:

• max texture units reduced to six to accomodate texture rectangles
• removed unfinished GL_MESA_sprite_point extension code

4.1 October 29, 2002

New:

• GL_NV_vertex_program extension
• GL_NV_vertex_program1_1 extension
• GL_ARB_window_pos extension
• GL_ARB_depth_texture extension
• GL_ARB_shadow extension
• GL_ARB_shadow_ambient extension
• GL_EXT_shadow_funcs extension
• GL_ARB_point_parameters extension
• GL_ARB_texture_env_crossbar
• GL_NV_point_sprite extension
• GL_NV_texture_rectangle extension
• GL_EXT_multi_draw_arrays extension
• GL_EXT_stencil_two_side extension
• GLX_SGIX_fbconfig and GLX_SGIX_pbuffer extensions
• GL_ATI_texture_mirror_once extension (Ian Romanick)
• massive overhaul/simplification of software rasterizer module, many contributions from Klaus Niederkrueger
• faster software texturing in some cases (i.e. trilinear filtering)
• new OSMesaGetProcAddress() function
• more blend modes implemented with MMX code (Jose Fonseca)
• added glutGetProcAddress() to GLUT
• added GLUT_FPS env var to compute frames/second in glutSwapBuffers()
• pbinfo and pbdemo PBuffer programs
• glxinfo -v prints transprent pixel info (Gerd Sussner)

Bug fixes:

• better mipmap LOD computation (prevents excessive blurriness)
• OSMesaMakeCurrent() didn't recognize buffer size changes
• assorted conformance fixes for 16-bit/channel rendering
• texcombine alpha subtraction mode was broken
• fixed some blend problems when GLchan==GLfloat (Gerk Huisma)
• clamp colors to [0,inf] in OSMesa if GLchan==GLfloat (Gerk Huisma)
• fixed divide by zero error in NURBS tessellator (Jon Perry)
• fixed GL_LINEAR fog bug by adding clamping
• fixed FP exceptions found using Alpha CPU
• 3dfx/glide driver render-to-window feature was broken
• added missing GLX_TRANSPARENT_RGB token to glx.h
• fixed error checking related to paletted textures
• fixed reference count error in glDeleteTextures (Randy Fayan)

Changes:

• New spec file and Python code to generate some GL dispatch files
• Glide driver defaults to "no" with autoconf/automake
• updated demos/stex3d with new options

5.0 November 13, 2002

New:

• OpenGL 1.4 support (glGetString(GL_VERSION) returns "1.4")
• removed some overlooked debugging code
• glxinfo updated to support GLX_ARB_multisample
• GLUT now support GLX_ARB_multisample
• updated DOS driver (Daniel Borca)

Bug fixes:

• GL_POINT and GL_LINE-mode polygons didn't obey cull state
• fixed potential bug in _mesa_align_malloc/calloc()
• fixed missing triangle bug when running vertex programs
• fixed a few HPUX compilation problems
• FX (Glide) driver didn't compile
• setting GL_TEXTURE_BORDER_COLOR with glTexParameteriv() didn't work
• a few EXT functions, like glGenTexturesEXT, were no-ops
• a few OpenGL 1.4 functions like glFogCoord*, glBlendFuncSeparate, glMultiDrawArrays and glMultiDrawElements were missing
• glGet*(GL_ACTIVE_STENCIL_FACE_EXT) was broken
• Pentium 4 Mobile was mistakenly identified as having 3DNow!
• fixed one-bit error in point/line fragment Z calculation
• fixed potential segfault in fakeglx code
• fixed color overflow problem in DOT3 texture env mode

5.0.1 March 30, 2003

New:

• DOS driver updates from Daniel Borca
• updated GL/gl_mangle.h file (Bill Hoffman) Bug fixes:
• auto mipmap generation for cube maps was broken (bug 641363)
• writing/clearing software alpha channels was unreliable
• minor compilation fixes for OS/2 (Evgeny Kotsuba)
• fixed some bad assertions found with shadowtex demo
• fixed error checking bug in glCopyTexSubImage2D (bug 659020)
• glRotate(angle, -x, 0, 0) was incorrect (bug 659677)
• fixed potential segfault in texture object validation (bug 659012)
• fixed some bogus code in _mesa_test_os_sse_exception_support (Linus)
• fix fog stride bug in tnl code for h/w drivers (Michel Danzer)
• fixed glActiveTexture / glMatrixMode(GL_TEXTURE) bug (#669080)
• glGet(GL_CURRENT_SECONDARY_COLOR) should return 4 values, not 3
• fixed compilation problem on Solaris7/x86 (bug 536406)
• fixed prefetch bug in 3DNow! code (Felix Kuhling)
• fixed NeXT build problem (FABSF macro)
• glDrawPixels Z values when glPixelZoom!=1 were invalid (bug 687811)
• zoomed glDraw/CopyPixels with clipping sometimes failed (bug 689964)
• AA line and triangle Z values are now rounded, not truncated
• fixed color interpolation bug when GLchan==GLfloat (bug 694461)
• glArePrograms/TexturesResident() wasn't 100% correct (Jose Fonseca)
• fixed a minor GL_COLOR_MATERIAL bug
• NV vertex program EXP instruction was broken
• glColorMask misbehaved with X window / pixmap rendering
• fix autoconf/libtool GLU C++ linker problem on Linux (a total hack)
• attempt to fix GGI compilation problem when MesaDemos not present
• NV vertex program ARL-relative fetches didn't work

Changes:

• use glPolygonOffset in gloss demo to avoid z-fighting artifacts
• updated winpos and pointblast demos to use ARB extensions
• disable SPARC normal transformation code (bug 673938)
• GLU fixes for OS/2 (Evgeny Kotsuba)

5.0.2 September 5, 2003

Bug fixes:

• fixed texgen problem causing texcoord's Q to be zero (stex3d)
• default GL_TEXTURE_COMPARE_MODE_ARB was wrong
• GL_CURRENT_MATRIX_NV query was wrong
• GL_CURRENT_MATRIX_STACK_DEPTH_NV query was off by one
• GL_LIST_MODE query wasn't correct
• GL_FOG_COORDINATE_SOURCE_EXT query wasn't supported
• GL_SECONDARY_COLOR_ARRAY_SIZE_EXT query returned wrong value
• blended, wide lines didn't always work correctly (bug 711595)
• glVertexAttrib4svNV w component was always 1
• fixed bug in GL_IBM_rasterpos_clip (missing return)
• GL_DEPTH_TEXTURE_MODE = GL_ALPHA didn't work correctly
• a few Solaris compilation fixes
• fixed glClear() problem for DRI drivers (non-existant stencil, etc)
• fixed int/REAL mixup in GLU NURBS curve evaluator (Eric Cazeaux)
• fixed delete [] bug in SI GLU (bug 721765) (Diego Santa Cruz)
• glFog() didn't clamp fog colors
• fixed bad float/int conversion for GL_TEXTURE_PRIORITY in the gl[Get]TexParameteri[v] functions
• fixed invalid memory references in glTexGen functions (bug 781602)
• integer-valued color arrays weren't handled correctly
• glDrawPixels(GL_DEPTH_COMPONENT) with glPixelZoom didn't work
• GL_EXT_texture_lod_bias is part of 1.4, overlooked in 5.0.1

Changes:

• build GLUT with -fexceptions so C++ apps propogate exceptions

5.1 December 17, 2003

New:

• reorganized directory tree
• GL_ARB_vertex/fragment_program extensions (Michal Krol & Karl Rasche)
• GL_ATI_texture_env_combine3 extension (Ian Romanick)
• GL_SGI_texture_color_table extension (Eric Plante)
• GL_NV_fragment_program extension
• GL_NV_light_max_exponent extension
• GL_EXT_texture_rectangle (identical to GL_NV_texture_rectangle)
• GL_ARB_occlusion_query extension
• GL_ARB_point_sprite extension
• GL_ARB_texture_non_power_of_two extension
• GL_IBM_multimode_draw_arrays extension
• GL_EXT_texture_mirror_clamp extension (Ian Romanick)
• GL_ARB_vertex_buffer_object extension
• new X86 feature detection code (Petr Sebor)
• less memory used for display lists and vertex buffers
• demo of per-pixel lighting with a fragment program (demos/fplight.c)
• new version (18) of glext.h header
• new spriteblast.c demo of GL_ARB_point_sprite
• faster glDrawPixels in X11 driver in some cases (see RELNOTES-5.1)
• faster glCopyPixels in X11 driver in some cases (see RELNOTES-5.1)

Bug fixes:

• really enable OpenGL 1.4 features in DOS driver.
• fixed issues in glDrawPixels and glCopyPixels for very wide images
• glPixelMapf/ui/usv()'s size parameter is GLsizei, not GLint
• fixed some texgen bugs reported by Daniel Borca
• fixed wglMakeCurrent(NULL, NULL) bug (#835861)
• fixed glTexSubImage3D z-offset bug (Cedric Gautier)
• fixed RGBA blend enable bug (Ville Syrjala)
• glAccum is supposed to be a no-op in selection/feedback mode
• fixed texgen bug #597589 (John Popplewell)

Changes:

• dropped API trace feature (src/Trace/)
• documentation overhaul. merged with website content. more html.
• glxgears.c demo updated to use GLX swap rate extensions
• glTexImage1/2/3D now allows width/height/depth = 0
• disable SPARC asm code on Linux (bug 852204)

6.0 January 16, 2004

New:

• full OpenGL 1.5 support
• updated GL/glext.h file to version 21 Changes:
• changed max framebuffer size to 4Kx4K (MAX_WIDTH/HEIGHT in config.h) Bug fixes:
• fixed bug in UNCLAMPED_FLOAT_TO_UBYTE macro; solves a color clamping issue
• updated suno5-gcc configs
• glColor3 functions sometimes resulted in undefined alpha values
• fixed FP divide by zero error seen on VMS with xlockmore, others
• fixed vertex/fragment program debug problem (bug 873011)
• building on AIX with gcc works now
• glDeleteProgramsARB failed for ARB fragment programs (bug 876160)
• glDrawRangeElements tried to modify potentially read-only storage
• updated files for building on Windows

6.0.1 April 2, 2004

New:

• upgraded glext.h to version 22
• new build targets (Dan Schikore)
• new linux-x86-opteron build target (Heath Feather)

Bug fixes:

• glBindProgramARB didn't update all necessary state
• fixed build problems on OpenBSD
• omit CVS directories from tarballs
• glGetTexImage(GL_COLOR_INDEX) was broken
• fixed an infinite loop in t&l module
• silenced some valgrind warnings about using unitialized memory
• fixed some compilation/link glitches on IRIX (Mike Stephens)
• glBindProgram wasn't getting compiled into display lists
• GLX_FBCONFIG_ID wasn't recognized in glXChooseFBConfig() (bug 888079)
• two-sided lighting and vertex program didn't work (bug 887330)
• stores to program parameter registers in vertex state programs didn't work.
• fixed glOrtho bug found with gcc 3.2.2 (RH9)
• glXCreateWindow() wasn't fully implemented (bug 890894)
• generic vertex attribute arrays didn't work in display lists
• vertex buffer objects' default usage and access fields were wrong
• glDrawArrays with start!=0 was broken
• fragment program PK2H, UP2H, UP4B and UP4UB instructions were broken
• linux-osmesa16-static config didn't work
• fixed a few color index rendering problems (bug 910687)
• glInterleavedArrays didn't respect GL_CLIENT_ACTIVE_TEXTURE
• OSMesa RGB and BGR modes were broken
• glProgramStringARB mistakenly required a null-terminated string
• fragment program XPD instruction was incorrect
• glGetMaterial() didn't work reliably
• ARB_fragment_program KIL instruction was incorrect

6.1 August 18, 2004

New:

• Revamped Makefile system
• glXUseRotatedXFont() utility (see xdemos/xuserotfont.c)
• internal driver interface changes related to texture object allocation, vertex/fragment programs, BlendEquationSeparate, etc.
• option to walk triangle edges with double-precision floats (Justin Novosad of Discreet) (see config.h file)
• support for AUX buffers in software GLX driver
• updated glext.h to version 24 and glxext.h to version 6
• new MESA_GLX_FORCE_ALPHA and MESA_GLX_DEPTH_BITS env vars
• updated BeOS support (Philippe Houdoin)

Changes:

• fragment fog interpolation is perspective corrected now
• new glTexImage code, much cleaner, may be a bit faster

Bug fixes:

• glArrayElement in display lists didn't handle generic vertex attribs
• glFogCoord didn't always work properly
• ARB_fragment_program fog options didn't work
• frag prog TEX instruction no longer incorrectly divides s,t,r by q
• ARB frag prog TEX and TEXP instructions now use LOD=0
• glTexEnviv in display lists didn't work
• glRasterPos didn't do texgen or apply texture matrix
• GL_DOUBLE-valued vertex arrays were broken in some cases
• fixed texture rectangle edge/border sampling bugs
• sampling an incomplete texture in a fragment program would segfault
• glTexImage was missing a few error checks
• fixed some minor glGetTexParameter glitches
• GL_INTENSITY was mistakenly accepted as a <format> to glTexImage
• fragment program writes to RC/HC register were broken
• fixed a few glitches in GL_HP_occlusion_test extension
• glBeginQueryARB and glEndQueryARB didn't work inside display lists
• vertex program state references were broken
• fixed triangle color interpolation bug on AIX (Shane Blackett)
• fixed a number of minor memory leaks (bug #1002030)

6.2 October 2, 2004

New:

• enabled GL_ARB_texture_rectangle (same as GL_NV_texture_rectangle)
• updated Doxygen support (Jose Fonseca)

Changes:

• some GGI driver updates (Christoph Egger, bug 1025977)

Bug fixes:

• Omit GL_ARB_texture_non_power_of_two from list of OpenGL 1.5 features
• fixed a few compilation issues on IRIX
• fixed a matrix classification bug (reported by Wes Bethel)
• we weren't reseting the vertex/fragment program error state before parsing (Dave Reveman)
• adjust texcoords for sampling texture rectangles (Dave Reveman)
• glGet*(GL_MAX_VERTEX_ATTRIBS_ARB) wasn't implemented
• repeated calls to glDeleteTexture(t) could lead to a crash
• fixed potential ref count bugs in VBOs and vertex/fragment programs
• spriteblast demo didn't handle window size changes correctly
• glTexSubImage didn't handle pixels=NULL correctly for PBOs
• fixed color index mode glDrawPixels bug (Karl Schultz)

6.2.1 December 9, 2004

Bug fixes:

• don't apply regular fog or color sum when using a fragment program
• glProgramEnvParameter4fARB always generated an error on GL_FRAGMENT_PROGRAM_ARB (fdo bug 1645)
• glVertexAttrib3svNV and glVertexAttrib3svARB were broken
• fixed width/height mix-up in glSeparableFilter2D()
• fixed regression in glCopyPixels + convolution
• glReadPixels from a clipped front color buffer didn't always work
• glTexImage didn't accept GL_RED/GREEN/BLUE as the format
• Attempting queries/accesses of VBO 0 weren't detected as errors
• paletted textures failed if the palette had fewer than 256 entries

Changes:

• fixed a bunch of compiler warnings found with gcc 3.4
• bug reports should to go bugzilla.freedesktop.org

6.3 July 20, 2005

New:

• GL_EXT_framebuffer_object extension
• GL_ARB_draw_buffers extension
• GL_ARB_pixel_buffer_object extension
• GL_OES_read_format extension (Ian Romanick)
• DirectFB driver (Claudio Ciccani)
• x86_64 vertex transformation code (Mikko T.)
• Updated GL/glext.h to version 29

Changes:

• added -stereo option for glxgears demo (Jacek Rosik)
• updated the PBuffer demo code in xdemos/ directory
• glDeleteTextures/Programs/Buffers() now makes the object ID available for immediate re-use
• assorted 64-bit clean-ups fixes (x86_64 and Win64)
• lots of internal changes for GL_EXT_framebuffer_object

Bug fixes:

• some functions didn't support PBO functionality
• glGetTexImage didn't convert color index images to RGBA as required
• fragment program texcoords were sometimes wrong for points and lines
• fixed problem with negative dot product in arbfplight, fplight demos
• fixed bug in perspective correction of antialiased, textured lines
• querying GL_POST_CONVOLUTION_ALPHA_BIAS_EXT returned wrong value
• fixed a couple per-pixel fog bugs (Soju Matsumoto)
• glGetBooleanv(GL_FRAGMENT_PROGRAM_BINDING_NV) was broken
• fixed float parsing bug in ARB frag/vert programs (bug 2520)
• XMesaGetDepthBuffer() returned incorrect value for bytesPerValue
• GL_COLOR_MATERIAL with glColor3 didn't properly set diffuse alpha
• glXChooseFBConfig() crashed if attribList pointer was NULL
• program state.light[n].spot.direction.w was wrong value (bug 3083)
• fragment program fog option required glEnable(GL_FOG) - wrong.
• glColorTable() could produce a Mesa implementation error (bug 3135)
• RasterPos could get corrupted by color index rendering path
• Removed bad XTranslateCoordinates call when rendering to Pixmaps
• glPopAttrib() didn't properly restore GL_TEXTURE_GEN enable state
• fixed a few Darwin compilation problems

6.3.1

This was an intermediate release for X.org which wasn't otherwise released.)

6.3.2 August 19, 2005

New:

• The distribution now includes the DRI drivers and GLX code

Changes:

• Made the DRI "new" driver interface standard, remove old code

Bug fixes:

• GL_ARB_vertex/fragment_shader were mistakenly listed in the extensions string
• negative relative addressing in vertex programs was broken
• update/fix SPARC assembly code for vertex transformation
• fixed memory leak when freeing GLX drawables/renderbuffers
• fixed display list memory leak
• the GL_PIXEL_MAP_I_TO_I table is now floating point, not integer
• wglGetProcAddress() didn't handle wgl-functions
• fixed glxext.h cross-compile issue (Colin Harrison)
• assorted DRI driver fixes

NOTE: Changes for Mesa 6.4 and later are documented in the corresponding release notes file.