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VERSIONS
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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 accommodate 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 ([email protected])
- optimized 24bpp X rendering ([email protected])
- added allegro support ([email protected])
- cleaned-up Windows-related stuff (Ted Jump)
- minor stereo changes ([email protected])
- 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 ([email protected])
Bug fixes:
- a variety of Windows/Mesa bug fixes ([email protected])
- packed pixel images weren't unpacked correctly
- patches some win32 files in GLUT ([email protected])
- 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 ([email protected])
- added GL_TEXTURE_PRIORITY fix ([email protected])
- 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)