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     10 <div class="header">
     11   <h1>The Mesa 3D Graphics Library</h1>
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     16 
     17 <b>
     18 NOTE: Changes for Mesa 6.4 and later are documented in the corresponding
     19 <a href="relnotes.html">release notes</a> file.
     20 </b>
     21 
     22 
     23 <h1>Mesa Version History</h1>
     24 
     25 
     26 <h2>1.0 beta   February 1995</h2>
     27 <ul>
     28 <li>Initial release
     29 </ul>
     30 
     31 <h2>1.1 beta   March 4, 1995</h2>
     32 Changes:
     33 <ul>
     34 <li>faster point and line drawing (2x faster)
     35 <li>more systems supported, better Makefiles
     36 <li>Renamed lib*.a files to avoid collisions
     37 <li>many small bug fixes
     38 </ul>
     39 New:
     40 <ul>
     41 <li>pseudo-GLX functions added
     42 <li>new implementation of evaluators (eval2.c)
     43 <li>GLUT support
     44 </ul>
     45 
     46 <h2>1.1.1 beta   March 7, 1995</h2>
     47 Changes:
     48 <ul>
     49 <li>Reverted from eval2.c to eval.c due to FPE on Linux
     50 <li>more speed improvements
     51 <li>more Makefile changes
     52 </ul>
     53 
     54 <h2>1.1.2 beta   March 14, 1995</h2>
     55 New:
     56 <ul>
     57 <li>implementation of SGI's blending extensions
     58 <li>glXUseXFont implemented
     59 <li>added MESA_DEBUG environment variable support
     60 </ul>
     61 Changes:
     62 <ul>
     63 <li>Using eval2.c again
     64 <li>more FPE-prevention checks (0-length normals are OK)
     65 <li>a few small bug fixes
     66 <li>much faster pixel logic ops!
     67 <li>faster transformation arithmetic
     68 </ul>
     69 
     70 <h2>1.1.3 beta   March 31, 1995</h2>
     71 New:
     72 <ul>
     73 <li>gluScaleImage() and gluBuild2DMipMaps() implemented
     74 <li>Mesa widgets for Xt/Motif
     75 <li>blendEXT demos
     76 <li>added environment variables for selecting visuals
     77 </ul>
     78 Changes:
     79 <ul>
     80 <li>almost all GLUT demos work correctly now
     81 <li>faster X device driver functions
     82 <li>more bug fixes
     83 </ul>
     84 
     85 <h2>1.1.4 beta   April 20, 1995</h2>
     86 Bug fixes:
     87 <ul>
     88 <li>missing #define SEEK_SET in src-tk/image.c
     89 <li>compile glShadeModel into display lists
     90 <li>fixed pow() domain error in src/light.c
     91 <li>fixed "flickering bitmaps" in double buffer mode
     92 <li>fixed tk.h and aux.h for C++
     93 <li>state of LIGHT_MODEL_LOCAL_VIEWER was inverted
     94 </ul>
     95 New features:
     96 <ul>
     97 <li>MUCH, MUCH nicer dithering in 8-bit RGB mode
     98 <li>updated widgets and widget demos
     99 <li>Implemented GLXPixmap functions
    100 <li>Added GLU 1.1 and GLX 1.1 functions
    101 <li>Changed the X/Mesa interface API, more versatile
    102 <li>Implemented gluPartialDisk()
    103 </ul>
    104 
    105 <h2>1.2   May 22, 1995</h2>
    106 Bug fixes:
    107 <ul>
    108 <li>IRIX 4.x makefile problem
    109 <li>modified tk to share root colormap as needed
    110 <li>gluLookAt normalization problem
    111 <li>suppress Expose, NoExpose events in swapbuffers
    112 <li>glBitmap() and glDrawPixels() clipping
    113 </ul>
    114 New features:
    115 <ul>
    116 <li>GL_BLEND, GL_MODULATE, GL_DECAL, and GL_REPLACE_EXT texture
    117 	    modes implemented
    118 <li>texture maps stored more efficiently
    119 <li>texture maps can be compiled into display lists
    120 <li>Bogdan Sikorski's GLU polygon tesselation code
    121 <li>Linas Vepstas's sweep and extrusion library
    122 <li>glXCreateContext()'s shareList parameter works as it's supposed to.
    123 	XMesaCreateContext() updated to accept a shareList parameter too.
    124 <li>Mesa can be compiled with real OpenGL .h files
    125 <li>MESA_BACK_BUFFER environment variable
    126 <li>better GLX error checking
    127 </ul>
    128 
    129 <h2>1.2.1   June 22, 1995</h2>
    130 Bug fixes:
    131 <ul>
    132 <li>X/Mesa double buffer window resize crash
    133 <li>widgets now pass PointerMotion events
    134 <li>X/Mesa incorrect default clear color and drawing color
    135 <li>more robust X MIT-SHM support in X/Mesa
    136 <li>glTexImage( format=GL_LUMINANCE ) didn't work
    137 <li>GL_LINE mode polygons with line width &gt; 1.0 could cause a crash
    138 <li>numerous feedback bugs
    139 <li>glReadPixels() from depth buffer was wrong
    140 <li>error prone depth and stencil buffer allocation
    141 New features:
    142 <li>Preliminary Microsoft Windows driver
    143 <li>Implemented a number of missing functions: glEvalCoord[12][df]v(),
    144 	glGet...(), etc.
    145 <li>Added a few missing symbols to gl.h and glu.h
    146 <li>Faster rendering of smooth-shaded, RGBA, depth-buffered polygons.
    147 <li>Faster rendering of lines when width=2.0
    148 <li>Stencil-related functions now work in display lists
    149 </ul>
    150 Changes:
    151 <ul>
    152 <li>renamed aux.h as glaux.h (MS-DOS names can't start with aux)
    153 <li>most filenames are in 8.3 format to accommodate MS-DOS
    154 <li>use GLubytes to store arrays of colors instead of GLints
    155 </ul>
    156 
    157 <h2>1.2.2   August 2, 1995</h2>
    158 New features:
    159 <ul>
    160 <li>texture mapped points and lines
    161 <li>NURBS! (but not 100% complete)
    162 <li>viewports may safely extend beyond window boundaries
    163 <li>MESA_PRIVATE_CMAP environment variable
    164 <li>Grayscale X display support
    165 <li>two new demos:  demos/gears.c and demos/shadow.c
    166 <li>MachTen for Macintosh configuration
    167 </ul>
    168 Bug fixes:
    169 <ul>
    170 <li>glGet*(GL_DEPTH_BITS) returned bytes, not bits
    171 <li>point, line, and bitmap rasterization suffered from roundoff errors
    172 <li>fixed a division by zero error in line clippping
    173 <li>occasional wrong default background color really fixed!
    174 <li>glDepthFunc(GL_ALWAYS) with glDepthMask(GL_FALSE) didn't work
    175 <li>gluBuild2DMipmaps malloc problem fixed
    176 <li>view volume clipping of smooth shaded lines resulted in bad colors
    177 </ul>
    178 Changes:
    179 <ul>
    180 <li>new visual selection method in glXChooseVisual()
    181 <li>improved GLU quadric functions
    182 <li>call XSync for glFinish and XFlush for glFlush
    183 <li>glVertex() calls now use a function pointer to avoid conditionals
    184 <li>removed contrib directory from Mesa tar file (available on ftp site)
    185 <li>AIX shared library support
    186 <li>Removed GLUenum type as it's not in OpenGL
    187 </ul>
    188 
    189 <h2>1.2.3   September 26, 1995</h2>
    190 New features:
    191 <ul>
    192 <li>Mesa header files now equivalent to SGI OpenGL headers
    193 <li>Support for HP's Color Recovery dithering displays
    194 <li>Faster vertex transformation
    195 <li>Faster raster operations into X windows under certain conditions
    196 <li>New configurations:  HP w/ shared libs, Ultrix w/ GCC, Data General
    197 <li>4-bit visuals now supported
    198 </ul>
    199 Bug fixes:
    200 <ul>
    201 <li>glScissor bug fixed
    202 <li>round-off errors in clipping lines against clip planes fixed
    203 <li>byte swapping between hosts and display servers implemented
    204 <li>glGetError() can be called without a current rendering context
    205 <li>problem with accidentally culled polygons is fixed
    206 <li>fixed some widget compilation problems
    207 </ul>
    208 
    209 <h2>1.2.4   November 17, 1995</h2>
    210 New features:
    211 <ul>
    212 <li>More speed improvements (lighting, fogging, polygon drawing)
    213 <li>Window system and OS-independent off-screen rendering
    214 <li>Preliminary Fortran bindings
    215 <li>glPolygonOffsetEXT implemented
    216 <li>glColorMask and glIndexMask now fully implemented
    217 <li>glPixelZoom implemented
    218 <li>display lists fully implemented
    219 <li>gamma correction
    220 <li>dithering in 8-bit TrueColor/DirectColor visuals
    221 </ul>
    222 Changes:
    223 <ul>
    224 <li>Improved device driver interface
    225 <li>tk.h renamed to gltk.h to avoid conflicts with Tcl's Tk
    226 <li>Dithering support moved from core into device driver
    227 </ul>
    228 Bug fixes:
    229 <ul>
    230 <li>glEnable/Disable( GL_LIGHTING ) didn't always take effect
    231 <li>glReadPixels byte swapping was broken
    232 <li>glMaterial with pname==GL_AMBIENT_AND_DIFFUSE was broken
    233 <li>duplicate glColor4b() prototype in GL/gl.h removed
    234 <li>stripes in wave -ci demo fixed
    235 <li>GL_LINEAR_MIPMAP_NEAREST had wrong value
    236 <li>bugs in HP Color Recovery support fixed
    237 <li>fixed bug when blending lines, points, bitmaps outside of window
    238 </ul>
    239 
    240 <h2>1.2.5   November 30, 1995</h2>
    241 New Features:
    242 <ul>
    243 <li>updated MS Windows driver
    244 <li>new implementation of StaticGray/GrayScale visual support
    245 </ul>
    246 Bug fixes:
    247 <ul>
    248 <li>pixelzooming with gamma correction or blending didn't work
    249 <li>HP color recovery visual wasn't being picked by glXChooseVisual
    250 <li>glClear didn't always observe glColorMask changes
    251 <li>olympic and offset demos didn't compile on some Suns
    252 <li>texcoord clamping wasn't correct
    253 <li>a polygon optimization introduced an occasional sampling problem
    254 </ul>
    255 
    256 <h2>1.2.6   January 26, 1996</h2>
    257 New Features:
    258 <ul>
    259 <li>faster line and polygon rendering under certain conditions.  See
    260 	  Performance Tips 9 and 10 in README
    261 <li>profiling
    262 <li>lighting is a bit faster
    263 <li>better perspective corrected texture mapping
    264 <li>Amiga AmiWin (X11) support
    265 <li>preliminary Linux SVGA driver
    266 Changes:
    267 <li>now using a 16-bit depth buffer, faster, smaller
    268 <li>GL_NORMALIZE is disabled by default
    269 </ul>
    270 Bug fixes:
    271 <ul>
    272 <li>projective texture mapping
    273 <li>fixed a memory leak in the context destroy function
    274 <li>GL_POLYGON with less than 3 vertices caused a crash
    275 <li>glGet*() returned wrong result for GL_INDEX_MODE
    276 <li>reading pixels from an unmapped X window caused a BadMatch error
    277 </ul>
    278 
    279 <h2>1.2.7   March 5, 1996</h2>
    280 New:
    281 <ul>
    282 <li>faster lighting
    283 <li>faster 16-bit TrueColor rendering on Linux
    284 <li>faster 32-bit TrueColor rendering on Linux, HP, IBM
    285 <li>non-depth-buffered XImage polygons are faster
    286 <li>vertex array extension
    287 <li>software alpha planes
    288 <li>updated Macintosh driver
    289 <li>new NeXT driver
    290 <li>GLU quadric functions generate texture coordinates
    291 <li>reflect.c demo - reflective, textured surface demo
    292 </ul>
    293 Changes:
    294 <ul>
    295 <li>gamma correction code moved into the X driver for better performance
    296 </ul>
    297 Bug fixes:
    298 <ul>
    299 <li>multiple glClipPlane()'s didn't work reliably
    300 <li>glPolygonMode() didn't always work
    301 <li>glCullFace( GL_FRONT_AND_BACK ) didn't work
    302 <li>texture mapping with gamma correction was buggy
    303 <li>floating point exceptions in texture coordinate interpolation
    304 <li>XImage byte swapping didn't always work
    305 <li>polygon edge flags weren't always used correctly
    306 </ul>
    307 
    308 <h2>1.2.8   May 22, 1996</h2>
    309 New:
    310 <ul>
    311 <li>overlay planes on X servers with the SERVER_OVERLAY_VISUALS property
    312 <li>better monochrome output
    313 <li>more IRIX 6.x configurations
    314 <li>more robust RGB mode color allocation
    315 <li>added MESA_XSYNC environment variable
    316 <li>GLX_MESA_pixmap_colormap and GLX_EXT_visual_info extensions
    317 <li>GL_MESA_window_pos extension
    318 <li>faster glReadPixels/glDrawPixels for GL_DEPTH and GL_UNSIGNED_SHORT
    319 	and GL_UNSIGNED_INT
    320 <li>driver for prototype Cirrus Mondello 3-D board
    321 <li>updated AmigaDOS driver
    322 <li>a few small speed optimizations in polygon rendering
    323 </ul>
    324 Changes:
    325 <ul>
    326 <li>internal device driver interface modified to simplify device
    327 	  driver implementations and to support hardware Z buffers
    328 <li>several changes to the X/Mesa interface (xmesa.h)
    329 </ul>
    330 Bug fixes:
    331 <ul>
    332 <li>fixed pow(0,0) domain error triggered on some systems
    333 <li>glStencilClear() in a display list caused an infinite loop
    334 <li>glRasterPos*() was sometimes off by +/-0.5 in X and Y
    335 <li>color masking and blending were performed in wrong order
    336 <li>auxSolidCylinder() sometimes drew a wire-frame cylinder
    337 <li>fixed file writing bug in osdemo.c
    338 <li>pixel mapping didn't always work
    339 <li>the GL_GEQUAL stencil func didn't work
    340 <li>the GL_INVERT stencil op didn't work
    341 <li>the stencil write mask didn't work
    342 <li>glPush/PopAttrib() didn't do enough error checking
    343 <li>glIsList() didn't always work correctly
    344 </ul>
    345 
    346 <h2>2.0  October 10, 1996</h2>
    347 New:
    348 <ul>
    349 <li>Implements OpenGL 1.1 API functions
    350 <li>all texture filtering modes supported (mipmapping)
    351 <li>faster texture mapping, see Performance Tip 11 in README
    352 <li>antialiased RGB points
    353 <li>X support for line and polygon stippling
    354 <li>glDrawBuffer( GL_FRONT_AND_BACK ) works
    355 <li>util/ directory of useful stuff
    356 <li>demos/texobj demo of texture objects
    357 </ul>
    358 Changes:
    359 <ul>
    360 <li>major internal changes for thread-safeness
    361 <li>new device driver interface
    362 <li>MESA_ALPHA env variable removed
    363 <li>triangle rasterizer replaces polygon rasterizer
    364 </ul>
    365 Bug fixes:
    366 <ul>
    367 <li>glPopAttrib() bug
    368 <li>glDrawBuffer(GL_NONE) works now
    369 </ul>
    370 
    371 <h2>2.1  December 14, 1996</h2>
    372 New:
    373 <ul>
    374 <li>VMS support
    375 <li>MS-DOS driver
    376 <li>OpenStep support
    377 <li>updated, combined Windows 95/NT driver
    378 <li>implemented glGetLighti() and glGetTexGen*()
    379 <li>GLX does garbage collection of ancillary buffers
    380 </ul>
    381 Bug fixes:
    382 <ul>
    383 <li>removed unused _EXT constants from gl.h
    384 <li>fixed polygon offset bugs
    385 <li>Z coordinates of clipped lines were incorrect
    386 <li>glEdgeFlag() in display lists didn't always work
    387 <li>glLight*() in display lists didn't work
    388 <li>fixed X line stipple bugs (Michael Pichler)
    389 <li>glXUseXfonts XFreeFont/XFreeFontInfo bug fixed
    390 <li>fixed a feedback bug
    391 <li>glTexGen*() now transforms GL_EYE_PLANE by inverse modelview matrix
    392 <li>polygons were sometimes culled instead of clipped
    393 <li>triangle rasterizer suffered from float/int overflow exceptions
    394 <li>fixed FP underflow exception in lighting (specular exponent)
    395 <li>glEnable/glDisable of GL_EXT_vertex_array enums didn't work
    396 <li>fixed free(NULL) in GLU tesselator code
    397 <li>using 24-bit color on some X servers resulted in garbage rendering
    398 <li>32-bit per pixel mode for XFree86 now works
    399 <li>glRotate(a,0,0,0) gave unpredictable results
    400 <li>GL_LINE_STRIP with &gt; 480 vertices had occasional clipping problems
    401 <li>8-bit TrueColor GLXPixmap rendering incorrectly required a colormap
    402 <li>glMaterial() wasn't ignored when GL_COLOR_MATERIAL was enabled
    403 <li>glEnable(GL_COLOR_MATERIAL) followed by glColor() didn't work right
    404 <li>accumulation buffer was limited to positive values
    405 <li>projective textures didn't work
    406 <li>selection buffer overflows weren't handled correctly
    407 </ul>
    408 Changes:
    409 <ul>
    410 <li>restored the GL_EXT_polygon_offset extension
    411 <li>slightly faster RGB dithering
    412 <li>the SVGA driver works again
    413 <li>Amiga driver now distributed separately
    414 <li>NeXT driver updated for Mesa 2.x
    415 </ul>
    416 
    417 <h2>2.2  March 14, 1997</h2>
    418 New:
    419 <ul>
    420 <li>better color selection when dithering
    421 <li>added GL_EXT_texture_object extension
    422 <li>updated MS-DOS driver for DJGPP
    423 <li>added openbsd make configuration
    424 <li>faster dithered flat-shaded triangles
    425 <li>various compilation problems with Motif widgets fixed
    426 <li>gl.h, glx.h and glu.h name mangling option
    427 <li>BeOS driver
    428 <li>3D texture mapping extension
    429 <li>GL_MESA_resize_buffers extension
    430 <li>morph3d, stex3d and spectex demos
    431 <li>3Dfx support
    432 </ul>
    433 Bug fixes:
    434 <ul>
    435 <li>glColorMaterial should finally work right in all respects
    436 <li>linear interpolation of mipmap levels was incorrectly weighted
    437 <li>readpix.c didn't compile on Macintosh
    438 <li>GL_INVERT and related logic ops didn't work right
    439 <li>glTexImage[12]D() didn't check its parameters consistantly
    440 <li>fixed a memory leak in glTexImage[12]D()
    441 <li>kludged around a SunOS 5.x/GCC compiler bug in the feedback code
    442 <li>glReadPixels aborted instead of normally catching some errors
    443 <li>a few 1.1 constants were missing or misnamed in gl.h
    444 <li>glBegin(p); glBegin(q); didn't generate an error
    445 <li>fixed a memory leak in GLX code
    446 <li>clipping of concave polygons could cause a core dump
    447 <li>1-component alpha texture maps didn't work
    448 <li>fixed a GLU polygon tesselator bug
    449 <li>polygons with colinear vertices were sometimes culled
    450 <li>feedback triangle colors were wrong when using smooth shading
    451 <li>textures with borders didn't work correctly
    452 <li>colors returned in feedback mode were wrong when using lighting
    453 <li>spotlights didn't effect ambient lighting correctly
    454 <li>gluPartialDisk() had a few bugs
    455 </ul>
    456 Changes:
    457 <ul>
    458 <li>device driver interface expanded to support texture mapping
    459 <li>faster matrix inversion subroutine
    460 <li>commented out #include "wmesa_extend.h" from src/wmesa.c
    461 <li>fixed many compiler warnings in the demo programs
    462 </ul>
    463 
    464 <h2>2.3  June 30, 1997</h2>
    465 New:
    466 <ul>
    467 <li>Mesa distribution divided into two pieces:  library code and demos
    468 <li>faster vertex transformation, clip testing, lighting
    469 <li>faster line drawing
    470 <li>TrueColor visuals how have dithering (for depths < 24 bits)
    471 <li>added MESA_NO_DITHER environment variable
    472 <li>new device driver function: NearFar(), RenderVB(), RasterSetup()
    473 <li>added LynxOS configuration
    474 <li>added cygnus Win32 configuration
    475 <li>added texcyl.c GLUT demo
    476 <li>added XMesaDitherColor() to X/Mesa interface
    477 <li>new NURBS code from Bogdan Sikorski
    478 <li>added demos/shape.c (non-rectangular X window!)
    479 </ul>
    480 Bug fixes:
    481 <ul>
    482 <li>glEnable/DisableClientState() were missing from GL/gl.h
    483 <li>GL_SPHERE_MAP texcoord generation didn't work correctly
    484 <li>glXGetConfig() returned wrong number of depth, stencil, accum bits
    485 <li>glDrawPixels feedback/selection didn't examine RasterPos valid bit
    486 <li>black and white were reversed on some monochrome displays
    487 <li>fixed potential image memory leak (wasn't setting reference counter)
    488 <li>glDrawPixels sometimes didn't recognize some GL state changes
    489 <li>gluProject/UnProject() didn't check for divide by zero
    490 <li>stex3d demo called random() and srandom(), not portable
    491 <li>fixed memory leaks in context.c and drawpix.c
    492 <li>fixed NULL dereferencing problem in gl_update_texture_state()
    493 <li>glReadPixels between glBegin/glEnd didn't generate an error.
    494 <li>fixed memory leak in polygon tesselator (Randy Frank)
    495 <li>fixed seg fault bug drawing flat-shaded, depth-tested lines
    496 <li>clipped GL_TRIANGLE_STRIPs sometimes had wrong color when flat-shaded
    497 <li>glBindTexture sometimes didn't work
    498 <li>fixed a bug deep in glXReleaseBuffersMESA()
    499 <li>fog was mistakenly applied to alpha
    500 <li>glPopMatrix didn't set "dirty matrix" flag
    501 <li>glPolygonStipple pattern was sometimes wrong
    502 <li>glClear wasn't disabled during feedback and selection
    503 <li>fixed memory leak in glTexSubImage[123]D
    504 </ul>
    505 Changes:
    506 <ul>
    507 <li>many library source files reorganized
    508 <li>faster X color allocation, colors also freed when finished with them
    509 <li>new texture sampling function pointer in texture objects
    510 <li>incorporated 3Dfx VooDoo driver v0.16 into main source tree
    511 <li>many 3Dfx driver updates
    512 <li>cygnus Makefiles now included
    513 <li>updated DOS driver
    514 <li>made a few changes to dosmesa.c and wmesa.c (VB-&gt;Unclipped)
    515 <li>internally, colors now stored in GLubytes, not GLfixed
    516 <li>optimized changing of GL_SHININESS parameter
    517 </ul>
    518 
    519 <h2>2.4  September 18, 1997</h2>
    520 New:
    521 <ul>
    522 <li>updated 3Dfx Glide driver
    523 <li>hacks for 3Dfx rendering into an X window or fullscreen
    524 <li>added depth buffer access functions to X/Mesa and OS/Mesa interfaces
    525 </ul>
    526 Bug fixes:
    527 <ul>
    528 <li>pixel buffer could overflow with long, wide lines
    529 <li>fixed FP underflow problems in lighting
    530 <li>glTexSubImage1D() had an unitialized variable
    531 <li>incomplete texture objects could cause a segfault
    532 <li>glDrawPixels with GL_COMPILE_AND_EXECUTE caused infinite loop
    533 <li>flat-shaded quads in a strip were miscolored if clipped
    534 <li>mipmapped triangle lod computation now works correctly
    535 <li>fixed a few under/overflow bugs in triangle rasterizer
    536 <li>glArrayElement() assigned bad normal if normal array disabled
    537 <li>changed argument to glXReleaseBuffersMESA()
    538 <li>fixed small triangle underflow bugs in tritemp.h (hopefully)
    539 <li>glBindTexture(target, 0) caused a crash
    540 <li>glTexImage[123]D() with NULL image pointer caused crash
    541 <li>glPixelStore parameters are now ignored during display list execution
    542 <li>fixed a two-sided lighting w/ clipping bug (black vertices)
    543 <li>textures with width!=height were sometimes mis-rendered
    544 <li>"weird" projection matrices could cause div by 0, other fp errors
    545 </ul>
    546 Changes:
    547 <ul>
    548 <li>changed precompiled header symbol from PCH to PC_HEADER
    549 <li>split api.c into api1.c and api2.c
    550 <li>added hash.c source file (but not used yet)
    551 <li>a few Sun and HP configuration file changes
    552 <li>MESA_GLX_FX env var replaces MESA_FX_WINDOW and MESA_FX_FULLSCREEN
    553 <li>fixed a few cygnus build problems (src/Makefile.cygnus, src/wmesa.c)
    554 </ul>
    555 
    556 <h2>2.5  November 20, 1997</h2>
    557 New:
    558 <ul>
    559 <li>updated 3Dfx driver (v20) for GLQuake
    560 <li>added GL_EXT_paletted_texture extension
    561 <li>added GL_EXT_shared_texture_palette extension
    562 <li>added GL_EXT_point_parameters extension
    563 <li>now including Mark Kilgard's GLUT library v3.6
    564 <li>new GLUT-based demos in gdemos/
    565 <li>added a few more Unix config targets
    566 <li>added Intel X86 assembly language vertex transformation code
    567 <li>3Dfx/Glide driver for Mesa now recognizes SST_SCREENREFRESH env var
    568 <li>Windows 95 S3 Virge driver
    569 </ul>
    570 Bug fixes:
    571 <ul>
    572 <li>glCopyTexImage?D would crash due to uninitialized variable
    573 <li>glColor w/ glColorMaterial in a display list caused a bug
    574 <li>fixed several glDrawPixels() and ReadPixels() bugs in 3Dfx driver
    575 <li>glVertex4*() vertices weren't always projected correctly
    576 <li>trying to use mipmapped textured points or lines caused crash
    577 <li>glColor[34][fd]() values now clamped to [0,1] before int conversion
    578 </ul>
    579 Changes:
    580 <ul>
    581 <li>new device driver functions for texture mapping
    582 <li>hash tables used for display list and texture object lookup
    583 <li>fixed GLX visual handling code to avoid saving redundant visuals
    584 <li>3Dfx Glide libraries automatically linked to libMesaGL.so
    585 <li>dropped the Cirrus Logic Mondello code since it's obsolete
    586 <li>updated Cygnus Makefiles (Stephane Rehel)
    587 <li>updated Windows MSVC++ Makefiles (Oleg Letsinsky)
    588 <li>procedure for making library files has changed: scripts now take
    589 	a major and minor version arguments.  Make-config changed a lot.
    590 <li>new implementation of glTexSubImage2D()
    591 <li>updated widgets-mesa directory to create libMesaGLwM.a (Motif widget)
    592 <li>separate linux-glide and linux-386-glide configurations
    593 </ul>
    594 
    595 <h2>2.6  February 12, 1998</h2>
    596 New:
    597 <ul>
    598 <li>Windows WGL functions
    599 <li>updated VMS, DOS, Windows, Cygnus, BeOS, Amiga compilation support
    600 <li>v0.22 of 3Dfx Glide driver
    601 <li>more X86 assembly language optimizations
    602 <li>faster blending for some modes
    603 <li>XMesaSetFXmode() to switch between 3Dfx window and full-screen mode
    604 <li>added preliminary thread support
    605 <li>added GLX_MESA_copy_sub_buffer extension
    606 <li>some clipping optimizations
    607 </ul>
    608 Bug fixes:
    609 <ul>
    610 <li>fixed shading/material bug when drawing long primitive strips
    611 <li>fixed clipping problem in long primitive strips
    612 <li>fixed clipping bug when using 3Dfx driver
    613 <li>fixed a problem when trying to use X fonts w/ 3Dfx driver
    614 <li>fixed a texture filter bug in 3Dfx/Glide driver
    615 <li>fixed bug in 3Dfx/Glide driver involving depth mask &amp; clearing
    616 <li>glLoadMatrix to set projection matrix confused the 3Dfx driver
    617 <li>non-identity texture matrices didn't work with linux-386 configs
    618 <li>glGenTextures() didn't reserve the returned texture IDs
    619 <li>NULL proxy image sent to glTexImageXD() caused crash
    620 <li>added texture state validation optimization (Henk Kok)
    621 <li>fixed colormap reuse problem when using both RGB and CI windows
    622 <li>32bpp True/DirectColor X visuals weren't recognized
    623 <li>fixed potential problem in evaluators memory allocation
    624 <li>fixed assorted demo compilation bugs
    625 </ul>
    626 Changes:
    627 <ul>
    628 <li>replaced old Mesa/windows/ directory with Mesa/WIN32/ directory
    629 <li>converted a few old glaux/gltk demos to GLUT
    630 <li>renamed directories:  demos -&gt; xdemos,  gdemos -&gt; demos
    631 </ul>
    632 
    633 
    634 <h2>3.0  September 17, 1998</h2>
    635 New:
    636 <ul>
    637 <li>OpenGL 1.2 API
    638 <li>GL_EXT_abgr pixel format extension
    639 <li>GL_SGIS_texture_edge_clamp extension
    640 <li>GL_SGIS_multitexture extension (to be replaced by GL_ARB_multitex)
    641 <li>GL_EXT_multitexture extension (to be replaced by GL_ARB_multitex)
    642 <li>GL_EXT_rescale_normal extension and renormal.c demo
    643 <li>GLX_SGI_video_sync extension (a no-op)
    644 <li>antialiased lines
    645 <li>glGetTexImage() now implemented
    646 <li>glDraw/Copy/ReadPixels() optimizations
    647 <li>optimized textured triangle code (Marten Stromberg)
    648 <li>more optimization of dithered TrueColor triangles in X driver
    649 <li>Linux GGI driver
    650 <li>updated MGL driver
    651 </ul>
    652 Bug fixes:
    653 <ul>
    654 <li>lots of assorted compilation fixes
    655 <li>glInitNames didn't write initial hit record
    656 <li>glBitmap didn't always check for invalid raster position
    657 <li>switching between GLX and OSMesa contexts caused a crash
    658 <li>fixed uninitialized variable in Mesa widget code
    659 <li>fixed typo in texture code which caused book/texgen to crash
    660 <li>fixed texture sampling bug when filter=GL_LINEAR and wrap=GL_CLAMP
    661 <li>gluDisk() in POINT or LINE mode sometimes failed
    662 <li>fixed texture + fog bug
    663 <li>GL_COMPILE_AND_EXECUTE mode didn't work reliably
    664 <li>glMultMatrix in projection matrix mode w/ 3Dfx driver could fail
    665 <li>glDrawPixels(color index pixels) weren't converted to RGBA
    666 <li>fixed possible getenv() buffer overflow security bug
    667 <li>glBitmap in feedback mode was offset by xOrig, yOrig params
    668 <li>device driver's DrawPixels hook was never used
    669 <li>glDrawPixels with zoomY!=1 and top/bottom clipping didn't work
    670 <li>glDrawPixels optimized for GL_LUMINANCE, GL_LUMINANCE_ALPHA, GLubyte
    671 <li>fixed MakeCurrent bug in GLwRedrawObjects() in MesaWorkstation.c
    672 <li>glCopyTexSubImage2D() didn't work with 3Dfx driver
    673 <li>lines with width = 2 could cause crash
    674 <li>glClear with scissor rect sometimes cleared whole buffer
    675 <li>glTexSubImage2D( .. GL_COLOR_INDEX .. ) didn't work
    676 <li>glTexImageXD( .. GL_ABGR_EXT .. ) didn't work
    677 <li>computation of inverse modelview matrix sometimes failed
    678 <li>fixed GL_CLAMP mode texture sampling bug
    679 <li>textured line interpolation was somewhat broken
    680 <li>textured triangle interpolation was also somewhat broken
    681 <li>glGet(MODELVIEW/PROJECTION/TEXTURE_MATRIX_STACK_DEPTH) off by one
    682 <li>evaluator state wasn't fully initialized
    683 <li>texture coordinate clipping was buggy
    684 <li>evaluator surfaces could be mis-colored
    685 <li>glAccum(GL_RETURN, s) didn't obey glColorMask() settings
    686 <li>zero area polygons shouldn't be culled if polygon mode is point/line
    687 <li>clipped width and height of glReadPixels was sometimes off by one
    688 <li>blending with alpha = 0 or 1.0 wasn't always exact
    689 <li>reading of pixels from clipped region was buggy
    690 <li>minor tweaking of X visual management in GLX emulator
    691 <li>glPolygonStipple now obeys pixel unpacking parameters
    692 <li>glGetPolygonStipple now obeys pixel packing parameters
    693 <li>interleaved vertex array texture coordinates were broken
    694 <li>query of proxy texture internal format was broken
    695 <li>alpha channel wasn't reliably cleared
    696 <li>fixed divide by zero error in gluScaleImage if dest size = 1 x 1
    697 </ul>
    698 Conformance bug fixes:
    699 <ul>
    700 <li>GL_SELECTION_BUFFER_POINTER and GL_SELECTION_BUFFER_SIZE were missing
    701 <li>GL_TEXTURE_INTERNAL_FORMAT was missing
    702 <li>glGet*(GL_POLYGON_STIPPLE) was broken
    703 <li>glPush/PopAttrib() didn't save/restore all texture state
    704 <li>glBitmap in feedback mode didn't work
    705 <li>feedback of texture coords didn't always work
    706 <li>glDrawPixels w/ format=GL_DEPTH_COMPONENT, type=GLbyte was broke
    707 <li>glDrawPixels w/ format=GL_DEPTH_COMPONENT, type=GLubyte was broke
    708 <li>glDrawPixels w/ format=GL_STENCIL_INDEX, type=GL_BITMAP was broke
    709 </ul>
    710 Changes:
    711 <ul>
    712 <li>upgraded GLUT to version 3.7
    713 <li>only GL and GLU library code included in MesaLib.tar.gz
    714 <li>GLUT and all demos now in MesaDemos.tar.gz
    715 <li>glaux and gltk libraries removed
    716 <li>IRIX -n32 and -64 libs go in lib32/ and lib64/ directories
    717 </ul>
    718 
    719 
    720 <h2>3.1 beta 1  November 19, 1998</h2>
    721 New:
    722 <ul>
    723 <li>GL_EXT_stencil_wrap extension
    724 <li>GL_INGR_blend_func_separate extension
    725 <li>GL_ARB_multitexture extension
    726 <li>GL_NV_texgen_reflection extension
    727 <li>newly optimized vertex transformation code
    728 <li>updated GLUT 3.7 code
    729 <li>better precision when using 32-bit Z buffer
    730 <li>Allegro DJGPP driver
    731 </ul>
    732 Bug fixes:
    733 <ul>
    734 <li>glCopyPixels between front/back buffers didn't copy alpha correctly
    735 <li>fixed out-of-bounds memory access in optimized 2-D texture code
    736 <li>glPixelStorei didn't accept GL_PACK/UNPACK_IMAGE_HEIGHT parameter
    737 <li>glGet*() didn't accept GL_MAX_3D_TEXTURE_SIZE parameter
    738 <li>clipping of texture coordinates sometimes had bad R,Q values
    739 <li>GL_CLAMP_TO_EDGE texture sampling was off by 0.5 texels
    740 <li>glEdgeFlagPointer() now takes a GLvoid * instead of GLboolean *
    741 <li>texture was sometimes applied twice with 3Dfx driver
    742 <li>glPush/PopAttrib() fouled up texture object reference counts
    743 <li>glDeleteLists(0, n) caused assertion failure
    744 <li>bilinear texture sampling wasn't accurate enough
    745 <li>glClear w/ glDepthMask(GL_FALSE) didn't work right on 3Dfx
    746 <li>color components were reversed on big endian 32 bpp X visuals
    747 </ul>
    748 Changes:
    749 <ul>
    750 <li>removed GL_EXT_multitexture extension
    751 </ul>
    752 
    753 
    754 <h2>3.1 beta 2  May 24, 1999</h2>
    755 New:
    756 <ul>
    757 <li>multi-textured points and lines (mjk (a] nvidia.com)
    758 <li>optimized 24bpp X rendering (bernd.paysan (a] gmx.de)
    759 <li>added allegro support (bernie-t (a] geocities.com)
    760 <li>cleaned-up Windows-related stuff (Ted Jump)
    761 <li>minor stereo changes (KendallB (a] scitechsoft.com)
    762 <li>new BeOS driver which implements BGLView class
    763 <li>new Direct3D driver (see src/D3D)
    764 <li>more efficient filled gluCylinder() function
    765 <li>utilities:  util/showbuffer.[ch] and util/glstate.[ch]
    766 <li>fixed some IRIX compiler warnings
    767 <li>added support for building Mesa in XFree86 with
    768 	SGI's GLX (kevin (a] precisioninsight.com)
    769 </ul>
    770 Bug fixes:
    771 <ul>
    772 <li>a variety of Windows/Mesa bug fixes (mjk (a] nvidia.com)
    773 <li>packed pixel images weren't unpacked correctly
    774 <li>patches some win32 files in GLUT (mjk (a] nvidia.com)
    775 <li>glTexImage[123]D() didn't accept internalFormat == GL_COLOR_INDEX
    776 <li>fixed lighting bug in Keith's new shading code
    777 <li>fixed texture segfault seen in Lament screensaver
    778 <li>fixed miscellaneous low-memory bugs
    779 <li>glClear(GL_COLOR_BUFFER_BIT) with RGBA or CI masking was broken
    780 <li>GL_LINEAR sampling of 3D textures was broken
    781 <li>fixed SVR4 'cc' compiler macro problem (dawes (a] xfree86.org)
    782 <li>added GL_TEXTURE_PRIORITY fix (keithh (a] netcomuk.co.uk)
    783 <li>fixed wide point and wide line conformance bugs (brianp)
    784 </ul>
    785 Changes:
    786 <ul>
    787 <li>some device driver changes (see src/dd.h)
    788 <li>new copyright on core Mesa code
    789 </ul>
    790 
    791 
    792 <h2>3.1 beta 3  September 17, 1999</h2>
    793 New:
    794 <ul>
    795 <li>optimized glAccum function
    796 <li>optimized 24bpp rendering in XMesa driver
    797 <li>GLU 1.2 polygon tessellator
    798 </ul>
    799 Bug Fixes:
    800 <ul>
    801 <li>glGetTexLevelParameter wasn't fully implemented
    802 <li>glXUseXFont now handles multi-byte fonts
    803 <li>glIsEnabled(GL_TEXTURE_2D / 3D) returned wrong result
    804 <li>alpha channel of blending points, lines was sometimes incorrect
    805 </ul>
    806 Changes:
    807 <ul>
    808 <li>New library names:  "libGL" instead of "libMesaGL"
    809 <li>New library numbering: libGL.so.1.2.310
    810 <li>New subdirectories:  docs/ and bin/
    811 <li>New Makefile-system (autoconf,automake,libtool)
    812 </ul>
    813 
    814 
    815 <h2>3.1 final  December 14, 1999</h2>
    816 New:
    817 <ul>
    818 <li>added demos/gloss.c
    819 <li>added xdemos/glxdpyinfo.c
    820 <li>added GLX_ARB_get_proc_address extension
    821 <li>rewritten glTexImage code paths (faster, less memory, bug fixes)
    822 </ul>
    823 Bug Fixes:
    824 <ul>
    825 <li>several vertex array bug fixes
    826 <li>overlapping glCopyPixels with pixel zooming now works
    827 <li>glXUseXFont() bitmaps were vertically shifted by one pixel
    828 <li>glCopyPixels with pixel zooming now works
    829 </ul>
    830 
    831 
    832 <h2>3.2 final  April 24, 2000</h2>
    833 Bug fixes:
    834 <ul>
    835 <li>fixed memcpy bugs in span.c
    836 <li>fixed missing glEnd problem in demos/tessdemo.c
    837 <li>fixed bug when clearing 24bpp Ximages
    838 <li>fixed clipping problem found in Unreal Tournament
    839 <li>fixed Loki's "ice bug" and "crazy triangles" seen in Heretic2
    840 <li>fixed Loki's 3dfx RGB vs BGR bug
    841 <li>fixed Loki's 3dfx smooth/flat shading bug in SoF
    842 </ul>
    843 Changes:
    844 <ul>
    845 <li>updated docs/README file
    846 <li>use bcopy() optimizations on FreeBSD
    847 <li>re-enabled the optimized persp_textured_triangle() function
    848 </ul>
    849 
    850 
    851 <h2>3.2.1  July 19, 2000</h2>
    852 Bug fixes:
    853 <ul>
    854 <li>gluBuild2DMipmaps() didn't accept GL_BGRA
    855 <li>Fixed compile/makefile problems on IRIX
    856 <li>fixed segfault in 3dfx driver when using GL selection/feedback
    857 <li>no longer cull very, very tiny triangles
    858 <li>blending w/ drawbuffer==GL_FRONT_BACK caused segfault (sw rendering)
    859 <li>fixed Motif detection code in widgets-mesa/configure.in
    860 <li>glColorMaterial and glMaterial updates to emissive and ambient
    861 	  didn't always work right
    862 <li>Specular highlights weren't always in the right place
    863 <li>clipped GL_LINE mode polygons had interior lines appear
    864 <li>blend term GL_ONE_MINUS_CONSTANT_ALPHA was broken
    865 <li>GL_NICEST fog didn't always work with flat shading
    866 <li>glRect commands in display lists were sometimes miscolored
    867 <li>Line Z offset didn't always work
    868 <li>fixed texgen normal vector problem (gloss's teapot)
    869 <li>numerous GL conformance bugs fixed
    870 </ul>
    871 Changes:
    872 <ul>
    873 <li>glColorMask(false, false, false, false) handled better/faster
    874 <li>reverted to old GLU polygon tessellator, GLU 1.1
    875 <li>updated Win32 build files
    876 </ul>
    877 
    878 
    879 <h2>3.3  July 21, 2000</h2>
    880 New:
    881 <ul>
    882 <li>antialiased triangles now implemented
    883 <li>GL_EXT_texture_env_add texture mode extension
    884 <li>GLX 1.3 API
    885 <li>support for separate draw/read buffers (ie GL_SGI_make_current_read)
    886 <li>thread-safe API dispath
    887 <li>improved glxinfo program
    888 <li>demos/texdown program to measure texture download performance
    889 <li>glext.h header file
    890 <li>demos/geartrain program
    891 <li>GL_EXT_texture_lod_bias extension
    892 <li>demos/lodbias program
    893 <li>further optimized glRead/DrawPixels for 16-bit TrueColor X visuals
    894 <li>GLX_EXT_visual_rating extension (a no-op, however)
    895 <li>GL_HP_occlusion_test extension (for X and OS/Mesa drivers)
    896 <li>demos/occlude program
    897 <li>GL_SGIS_pixel_texture and GL_SGIX_pixel_texture extensions
    898 <li>demos/pixeltex program
    899 <li>GL_SGI_color_matrix extension
    900 <li>GL_SGI_color_table extension
    901 <li>GL_EXT_histogram extension
    902 <li>GL_ARB_texture_cube_map extension
    903 <li>added xdemos/glxheads and xdemos/manywin
    904 <li>demos/texenv.c demo
    905 <li>GL_EXT_texture_env_combine extension (by Holger Waechtler)
    906 <li>Xlib driver is now thread-safe (see xdemos/glthreads)
    907 </ul>
    908 Bug Fixes:
    909 <ul>
    910 <li>various GL conformance failures fixed since 3.2.1
    911 </ul>
    912 Changes:
    913 <ul>
    914 <li>gl.h now uses #defines instead of C enums for all tokens
    915 <li>glu.h now uses #defines instead of C enums for all tokens
    916 <li>moved programs from 3Dfx/demos/ into demos/ directory
    917 </ul>
    918 
    919 
    920 <h2>3.4  November 3, 2000</h2>
    921 New:
    922 <ul>
    923 <li>optimized glDrawPixels for glPixelZoom(1,-1)
    924 Bug Fixes:
    925 <li>widgets-mesa/src/*.c files were missing from 3.3 distro
    926 <li>include/GL/mesa_wgl.h file was missing from 3.3 distro
    927 <li>fixed some Win32 compile problems
    928 <li>texture object priorities weren't getting initialized to 1.0
    929 <li>glAreTexturesResident return value was wrong when using hardware
    930 <li>glXUseXFont segfaulted when using 3dfx driver (via MESA_GLX_FX)
    931 <li>glReadPixels with GLushort packed types was broken
    932 <li>fixed a few bugs in the GL_EXT_texture_env_combine texture code
    933 <li>glPush/PopAttrib(GL_ENABLE_BIT) mishandled multi-texture enables
    934 <li>fixed some typos/bugs in the VB code
    935 <li>glDrawPixels(GL_COLOR_INDEX) to RGB window didn't work
    936 <li>optimized glDrawPixels paths weren't being used
    937 <li>per-fragment fog calculation didn't work without a Z buffer
    938 <li>improved blending accuracy, fixes Glean blendFunc test failures
    939 <li>glPixelStore(GL_PACK/UNPACK_SKIP_IMAGES) wasn't handled correctly
    940 <li>glXGetProcAddressARB() didn't always return the right address
    941 <li>gluBuild[12]DMipmaps() didn't grok the GL_BGR pixel format
    942 <li>texture matrix changes weren't always detected (GLUT projtex demo)
    943 <li>fixed random color problem in vertex fog code
    944 <li>fixed Glide-related bug that let Quake get a 24-bit Z buffer
    945 </ul>
    946 Changes:
    947 <ul>
    948 <li>finished internal support for compressed textures for DRI
    949 </ul>
    950 
    951 
    952 <h2>3.4.1  February 14, 2001</h2>
    953 New:
    954 <ul>
    955 <li>fixed some Linux build problems
    956 <li>fixed some Windows build problems
    957 <li>GL_EXT_texture_env_dot3 extension (Gareth Hughes)
    958 </ul>
    959 Bug fixes:
    960 <ul>
    961 <li>added RENDER_START/RENDER_FINISH macros for glCopyTexImage in DRI
    962 <li>various state-update code changes needed for DRI bugs
    963 <li>disabled pixel transfer ops in glColorTable commands, not needed
    964 <li>fixed bugs in glCopyConvolutionFilter1D/2D, glGetConvolutionFilter
    965 <li>updated sources and fixed compile problems in widgets-mesa/
    966 <li>GLX_PBUFFER enum value was wrong in glx.h
    967 <li>fixed a glColorMaterial lighting bug
    968 <li>fixed bad args to Read/WriteStencilSpan in h/w stencil clear function
    969 <li>glXCopySubBufferMESA() Y position was off by one
    970 <li>Error checking of glTexSubImage3D() was broken (bug 128775)
    971 <li>glPopAttrib() didn't restore all derived Mesa state correctly
    972 <li>Better glReadPixels accuracy for 16bpp color - fixes lots of OpenGL
    973 	  conformance problems at 16bpp.
    974 <li>clearing depth buffer with scissoring was broken, would segfault
    975 <li>OSMesaGetDepthBuffer() returned bad bytesPerValue value
    976 <li>fixed a line clipping bug (reported by Craig McDaniel)
    977 <li>fixed RGB color over/underflow bug for very tiny triangles
    978 </ul>
    979 Known problems:
    980 <ul>
    981 <li>NURBS or evaluator surfaces inside display lists don't always work
    982 </ul>
    983 
    984 
    985 <h2>3.4.2  May 17, 2001</h2>
    986 Bug fixes:
    987 <ul>
    988 <li>deleting the currently bound texture could cause bad problems
    989 <li>using fog could result in random vertex alpha values
    990 <li>AA triangle rendering could touch pixels outside right window bound
    991 <li>fixed byteswapping problem in clear_32bit_ximage() function
    992 <li>fixed bugs in wglUseFontBitmapsA(), by Frank Warmerdam
    993 <li>fixed memory leak in glXUseXFont()
    994 <li>fragment sampling in AA triangle function was off by 1/2 pixel
    995 <li>Windows: reading pixels from framebuffer didn't always work
    996 <li>glConvolutionFilter2D could segfault or cause FP exception
    997 <li>fixed segfaults in FX and X drivers when using tex unit 1 but not 0
    998 <li>GL_NAND logicop didn't work right in RGBA mode
    999 <li>fixed a memory corruption bug in vertex buffer reset code
   1000 <li>clearing the softwara alpha buffer with scissoring was broken
   1001 <li>fixed a few color index mode fog bugs
   1002 <li>fixed some bad assertions in color index mode
   1003 <li>fixed FX line 'stipple' bug #420091
   1004 <li>fixed stencil buffer clear width/height typo
   1005 <li>fixed GL error glitches in gl[Client]ActiveTextureARB()
   1006 <li>fixed Windows compilation problem in texutil.c
   1007 <li>fixed 1/8-pixel AA triangle sampling error
   1008 </ul>
   1009 Changes:
   1010 <ul>
   1011 <li>optimized writing mono-colored pixel spans to X pixmaps
   1012 <li>increased max viewport size to 2048 x 2048
   1013 </ul>
   1014 
   1015 
   1016 <h2>3.5  June 21, 2001</h2>
   1017 New:
   1018 <ul>
   1019 <li>internals of Mesa divided into modular pieces (Keith Whitwell)
   1020 <li>100% OpenGL 1.2 conformance (passes all conformance tests)
   1021 <li>new AA line algorithm
   1022 <li>GL_EXT_convolution extension
   1023 <li>GL_ARB_imaging subset
   1024 <li>OSMesaCreateContextExt() function
   1025 <li>GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
   1026 <li>GL_MAX_TEXTURE_UNITS_ARB now defaults to eight
   1027 <li>GL_EXT_fog_coord extension (Keith Whitwell)
   1028 <li>GL_EXT_secondary_color extension (Keith Whitwell)
   1029 <li>GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
   1030 <li>GL_SGIX_depth_texture extension
   1031 <li>GL_SGIX_shadow and GL_SGIX_shadow_ambient extensions
   1032 <li>demos/shadowtex.c demo of GL_SGIX_depth_texture and GL_SGIX_shadow
   1033 <li>GL_ARB_texture_env_combine extension
   1034 <li>GL_ARB_texture_env_dot3 extension
   1035 <li>GL_ARB_texture_border_clamp (aka GL_SGIS_texture_border_clamp)
   1036 <li>OSMesaCreateContextExt() function
   1037 <li>libOSMesa.so library, contains the OSMesa driver interface
   1038 <li>GL/glxext.h header file for GLX extensions
   1039 <li>somewhat faster software texturing, fogging, depth testing
   1040 <li>all color-index conformance tests now pass (only 8bpp tested)
   1041 <li>SPARC assembly language TCL optimizations (David Miller)
   1042 <li>GL_SGIS_generate_mipmap extension
   1043 </ul>
   1044 Bug Fixes:
   1045 <ul>
   1046 <li>fbiRev and tmuRev were unitialized when using Glide3
   1047 <li>fixed a few color index mode conformance failures; all pass now
   1048 <li>now appling antialiasing coverage to alpha after texturing
   1049 <li>colors weren't getting clamped to [0,1] before color table lookup
   1050 <li>fixed RISC alignment errors caused by COPY_4UBV macro
   1051 <li>drawing wide, flat-shaded lines could cause a segfault
   1052 <li>vertices now snapped to 1/16 pixel to fix rendering of tiny triangles
   1053 </ul>
   1054 Changes:
   1055 <ul>
   1056 <li>SGI's Sample Implementation (SI) 1.3 GLU library replaces Mesa GLU
   1057 <li>new libOSMesa.so library, contains the OSMesa driver interface
   1058 </ul>
   1059 
   1060 
   1061 <h2>4.0  October 22, 2001</h2>
   1062 New:
   1063 <ul>
   1064 <li>Mesa 4.0 implements the OpenGL 1.3 specification
   1065 <li>GL_IBM_rasterpos_clip extension
   1066 <li>GL_EXT_texture_edge_clamp extension (aka GL_SGIS_texture_edge_clamp)
   1067 <li>GL_ARB_texture_mirrored_repeat extension
   1068 <li>WindML UGL driver (Stephane Raimbault)
   1069 <li>added OSMESA_MAX_WIDTH/HEIGHT queries
   1070 <li>attempted compiliation fixes for Solaris 5, 7 and 8
   1071 <li>updated glext.h and glxext.h files
   1072 <li>updated Windows driver (Karl Schultz)
   1073 </ul>
   1074 Bug fixes:
   1075 <ul>
   1076 <li>added some missing GLX 1.3 tokens to include/GL/glx.h
   1077 <li>GL_COLOR_MATRIX changes weren't recognized by teximage functions
   1078 <li>glCopyPixels with scale and bias was broken
   1079 <li>glRasterPos with lighting could segfault
   1080 <li>glDeleteTextures could leave a dangling pointer
   1081 <li>Proxy textures for cube maps didn't work
   1082 <li>fixed a number of 16-bit color channel bugs
   1083 <li>fixed a few minor memory leaks
   1084 <li>GLX context sharing was broken in 3.5
   1085 <li>fixed state-update bugs in glPopClientAttrib()
   1086 <li>fixed glDrawRangeElements() bug
   1087 <li>fixed a glPush/PopAttrib() bug related to texture binding
   1088 <li>flat-shaded, textured lines were broken
   1089 <li>fixed a dangling pointer problem in the XMesa code (Chris Burghart)
   1090 <li>lighting didn't always produce the correct alpha value
   1091 <li>fixed 3DNow! code to not read past end of arrays (Andrew Lewycky)
   1092 </ul>
   1093 
   1094 
   1095 <h2>4.0.1 December 17, 2001</h2>
   1096 New:
   1097 <ul>
   1098 <li>better sub-pixel sample positions for AA triangles (Ray Tice)
   1099 <li>slightly faster blending for (GL_ZERO, GL_ONE) and (GL_ONE, GL_ZERO)
   1100 </ul>
   1101 Bug fixes:
   1102 <ul>
   1103 <li>added missing break statements in glGet*() for multisample cases
   1104 <li>fixed uninitialized hash table mutex bug (display lists / texobjs)
   1105 <li>fixed bad teximage error check conditional (bug 476846)
   1106 <li>fixed demos readtex.c compilation problem on Windows (Karl Schultz)
   1107 <li>added missing glGet() query for GL_MAX_TEXTURE_LOD_BIAS_EXT
   1108 <li>silence some compiler warnings (gcc 2.96)
   1109 <li>enable the #define GL_VERSION_1_3 in GL/gl.h
   1110 <li>added GL 1.3 and GLX 1.4 entries to gl_mangle.h and glx_mangle.h
   1111 <li>fixed glu.h typedef problem found with MSDev 6.0
   1112 <li>build libGL.so with -Bsymbolic (fixes bug found with Chromium)
   1113 <li>added missing 'const' to glXGetContextIDEXT() in glxext.h
   1114 <li>fixed a few glXGetProcAddress() errors (texture compression, etc)
   1115 <li>fixed start index bug in compiled vertex arrays (Keith)
   1116 <li>fixed compilation problems in src/SPARC/glapi_sparc.S
   1117 <li>fixed triangle strip "parity" bug found in VTK medical1 demo (Keith)
   1118 <li>use glXGetProcAddressARB in GLUT to avoid extension linking problems
   1119 <li>provoking vertex of flat-shaded, color-index triangles was wrong
   1120 <li>fixed a few display list bugs (GLUT walker, molecule, etc) (Keith)
   1121 <li>glTexParameter didn't flush the vertex buffer (Ray Tice)
   1122 <li>feedback attributes for glDraw/CopyPixels and glBitmap were wrong
   1123 <li>fixed bug in normal length caching (ParaView lighting bug)
   1124 <li>fixed separate_specular color bug found in Chimera (18 Dec 2001)
   1125 </ul>
   1126 
   1127 
   1128 <h2>4.0.2  April 2, 2002</h2>
   1129 New:
   1130 <ul>
   1131 <li>New DOS (DJGPP) driver written by Daniel Borca
   1132 <li>New driver interface functions for TCL drivers (such as Radeon DRI)
   1133 <li>GL_RENDERER string returns "Mesa Offscreen16" or "Mesa Offscreen32"
   1134 	  if using deep color channels
   1135 <li>latest GL/glext.h and GL/glxext.h headers from SGI
   1136 </ul>
   1137 Bug fixes:
   1138 <ul>
   1139 <li>GL_BLEND with non-black texture env color wasn't always correct
   1140 <li>GL_REPLACE with GL_RGB texture format wasn't always correct (alpha)
   1141 <li>glTexEnviv( pname != GL_TEXTURE_ENV_COLOR ) was broken
   1142 <li>glReadPixels was sometimes mistakenly clipped by the scissor box
   1143 <li>glDraw/ReadPixels didn't catch all the errors that they should have
   1144 <li>Fixed 24bpp rendering problem in Windows driver (Karl Schultz)
   1145 <li>16-bit GLchan mode fixes (m_trans_tmp.h, s_triangle.c)
   1146 <li>Fixed 1-bit float-&gt;int conversion bug in glDrawPixels(GL_DEPTH_COMP)
   1147 <li>glColorMask as sometimes effecting glXSwapBuffers()
   1148 <li>fixed a potential bug in XMesaGarbageCollect()
   1149 <li>N threads rendering into one window didn't work reliably
   1150 <li>glCopyPixels didn't work for deep color channels
   1151 <li>improved 8 -&gt; 16bit/channel texture image conversion (Gerk Huisma)
   1152 <li>glPopAttrib() didn't correctly restore user clip planes
   1153 <li>user clip planes failed for some perspective projections (Chromium)
   1154 </ul>
   1155 Known bugs:
   1156 <ul>
   1157 <li>mipmap LOD computation
   1158 </ul>
   1159 
   1160 
   1161 <h2>4.0.3  June 25, 2002</h2>
   1162 New:
   1163 <ul>
   1164 <li>updated GL/glext.h file (version 15)
   1165 <li>corrected MMX blend code (Jose Fonseca)
   1166 <li>support for software-based alpha planes in Windows driver
   1167 <li>updated GGI driver (Filip Spacek)
   1168 </ul>
   1169 Bug fixes:
   1170 <ul>
   1171 <li>glext.h had wrong values for GL_DOT3_RGB[A]_EXT tokens
   1172 <li>OSMesaMakeCurrent() didn't recognize buffer size changes
   1173 <li>assorted conformance fixes for 16-bit/channel rendering
   1174 <li>texcombine alpha subtraction mode was broken
   1175 <li>fixed lighting bug with non-uniform scaling and display lists
   1176 <li>fixed bug when deleting shared display lists
   1177 <li>disabled SPARC cliptest assembly code (Mesa bug 544665)
   1178 <li>fixed a couple Solaris compilation/link problems
   1179 <li>blending clipped glDrawPixels didn't always work
   1180 <li>glGetTexImage() didn't accept packed pixel types
   1181 <li>glPixelMapu[is]v() could explode given too large of pixelmap
   1182 <li>glGetTexParameter[if]v() didn't accept GL_TEXTURE_MAX_ANISOTROPY_EXT
   1183 <li>glXCopyContext() could lead to segfaults
   1184 <li>glCullFace(GL_FRONT_AND_BACK) didn't work (bug 572665)
   1185 </ul>
   1186 Changes:
   1187 <ul>
   1188 <li>lots of C++ (g++) code clean-ups
   1189 <li>lots of T&amp;L updates for the Radeon DRI driver
   1190 </ul>
   1191 Known bugs:
   1192 <ul>
   1193 <li>mipmap LOD computation (fixed for Mesa 4.1)
   1194 </ul>
   1195 
   1196 
   1197 <h2>4.0.4  October 3, 2002</h2>
   1198 New:
   1199 <ul>
   1200 <li>GL_NV_texture_rectangle extension
   1201 <li>updated glext.h header (version 17)
   1202 <li>updated DOS driver (Daniel Borca)
   1203 <li>updated BeOS R5 driver (Philippe Houdoin)
   1204 <li>added GL_IBM_texture_mirror_repeat
   1205 <li>glxinfo now takes -l option to print interesting OpenGL limits info
   1206 <li>GL_MESA_ycbcr_texture extension
   1207 <li>GL_APPLE_client_storage extension (for some DRI drivers only)
   1208 <li>GL_MESA_pack_invert extension
   1209 </ul>
   1210 Bug fixes:
   1211 <ul>
   1212 <li>fixed GL_LINEAR fog bug by adding clamping
   1213 <li>fixed FP exceptions found using Alpha CPU
   1214 <li>3dfx MESA_GLX_FX=window (render to window) didn't work
   1215 <li>fixed memory leak in wglCreateContest (Karl Schultz)
   1216 <li>define GLAPIENTRY and GLAPI if undefined in glu.h
   1217 <li>wglGetProcAddress didn't handle all API functions
   1218 <li>when testing for OpenGL 1.2 vs 1.3, check for GL_ARB_texture_cube_map
   1219 <li>removed GL_MAX_CONVOLUTION_WIDTH/HEIGHT from glGetInteger/Float/etc()
   1220 <li>error checking in compressed tex image functions had some glitches
   1221 <li>fixed AIX compile problem in src/config.c
   1222 <li>glGetTexImage was using pixel unpacking instead of packing params
   1223 <li>auto-mipmap generation for cube maps was incorrect
   1224 </ul>
   1225 Changes:
   1226 <ul>
   1227 <li>max texture units reduced to six to accommodate texture rectangles
   1228 <li>removed unfinished GL_MESA_sprite_point extension code
   1229 </ul>
   1230 
   1231 
   1232 <h2>4.1  October 29, 2002</h2>
   1233 New:
   1234 <ul>
   1235 <li>GL_NV_vertex_program extension
   1236 <li>GL_NV_vertex_program1_1 extension
   1237 <li>GL_ARB_window_pos extension
   1238 <li>GL_ARB_depth_texture extension
   1239 <li>GL_ARB_shadow extension
   1240 <li>GL_ARB_shadow_ambient extension
   1241 <li>GL_EXT_shadow_funcs extension
   1242 <li>GL_ARB_point_parameters extension
   1243 <li>GL_ARB_texture_env_crossbar
   1244 <li>GL_NV_point_sprite extension
   1245 <li>GL_NV_texture_rectangle extension
   1246 <li>GL_EXT_multi_draw_arrays extension
   1247 <li>GL_EXT_stencil_two_side extension
   1248 <li>GLX_SGIX_fbconfig and GLX_SGIX_pbuffer extensions
   1249 <li>GL_ATI_texture_mirror_once extension (Ian Romanick)
   1250 <li>massive overhaul/simplification of software rasterizer module,
   1251 	  many contributions from Klaus Niederkrueger
   1252 <li>faster software texturing in some cases (i.e. trilinear filtering)
   1253 <li>new OSMesaGetProcAddress() function
   1254 <li>more blend modes implemented with MMX code (Jose Fonseca)
   1255 <li>added glutGetProcAddress() to GLUT
   1256 <li>added GLUT_FPS env var to compute frames/second in glutSwapBuffers()
   1257 <li>pbinfo and pbdemo PBuffer programs
   1258 <li>glxinfo -v prints transprent pixel info (Gerd Sussner)
   1259 </ul>
   1260 Bug fixes:
   1261 <ul>
   1262 <li>better mipmap LOD computation (prevents excessive blurriness)
   1263 <li>OSMesaMakeCurrent() didn't recognize buffer size changes
   1264 <li>assorted conformance fixes for 16-bit/channel rendering
   1265 <li>texcombine alpha subtraction mode was broken
   1266 <li>fixed some blend problems when GLchan==GLfloat (Gerk Huisma)
   1267 <li>clamp colors to [0,inf] in OSMesa if GLchan==GLfloat (Gerk Huisma)
   1268 <li>fixed divide by zero error in NURBS tessellator (Jon Perry)
   1269 <li>fixed GL_LINEAR fog bug by adding clamping
   1270 <li>fixed FP exceptions found using Alpha CPU
   1271 <li>3dfx/glide driver render-to-window feature was broken
   1272 <li>added missing GLX_TRANSPARENT_RGB token to glx.h
   1273 <li>fixed error checking related to paletted textures
   1274 <li>fixed reference count error in glDeleteTextures (Randy Fayan)
   1275 </ul>
   1276 Changes:
   1277 <ul>
   1278 <li>New spec file and Python code to generate some GL dispatch files
   1279 <li>Glide driver defaults to "no" with autoconf/automake
   1280 <li>updated demos/stex3d with new options
   1281 </ul>
   1282 
   1283 
   1284 <h2>5.0  November 13, 2002</h2>
   1285 New:
   1286 <ul>
   1287 <li>OpenGL 1.4 support (glGetString(GL_VERSION) returns "1.4")
   1288 <li>removed some overlooked debugging code
   1289 <li>glxinfo updated to support GLX_ARB_multisample
   1290 <li>GLUT now support GLX_ARB_multisample
   1291 <li>updated DOS driver (Daniel Borca)
   1292 </ul>
   1293 Bug fixes:
   1294 <ul>
   1295 <li>GL_POINT and GL_LINE-mode polygons didn't obey cull state
   1296 <li>fixed potential bug in _mesa_align_malloc/calloc()
   1297 <li>fixed missing triangle bug when running vertex programs
   1298 <li>fixed a few HPUX compilation problems
   1299 <li>FX (Glide) driver didn't compile
   1300 <li>setting GL_TEXTURE_BORDER_COLOR with glTexParameteriv() didn't work
   1301 <li>a few EXT functions, like glGenTexturesEXT, were no-ops
   1302 <li>a few OpenGL 1.4 functions like glFogCoord*, glBlendFuncSeparate,
   1303 	  glMultiDrawArrays and glMultiDrawElements were missing
   1304 <li>glGet*(GL_ACTIVE_STENCIL_FACE_EXT) was broken
   1305 <li>Pentium 4 Mobile was mistakenly identified as having 3DNow!
   1306 <li>fixed one-bit error in point/line fragment Z calculation
   1307 <li>fixed potential segfault in fakeglx code
   1308 <li>fixed color overflow problem in DOT3 texture env mode
   1309 </ul>
   1310 
   1311 
   1312 <h2>5.0.1  March 30, 2003</h2>
   1313 New:
   1314 <ul>
   1315 <li>DOS driver updates from Daniel Borca
   1316 <li>updated GL/gl_mangle.h file (Bill Hoffman)
   1317 Bug fixes:
   1318 <li>auto mipmap generation for cube maps was broken (bug 641363)
   1319 <li>writing/clearing software alpha channels was unreliable
   1320 <li>minor compilation fixes for OS/2 (Evgeny Kotsuba)
   1321 <li>fixed some bad assertions found with shadowtex demo
   1322 <li>fixed error checking bug in glCopyTexSubImage2D (bug 659020)
   1323 <li>glRotate(angle, -x, 0, 0) was incorrect (bug 659677)
   1324 <li>fixed potential segfault in texture object validation (bug 659012)
   1325 <li>fixed some bogus code in _mesa_test_os_sse_exception_support (Linus)
   1326 <li>fix fog stride bug in tnl code for h/w drivers (Michel Danzer)
   1327 <li>fixed glActiveTexture / glMatrixMode(GL_TEXTURE) bug (#669080)
   1328 <li>glGet(GL_CURRENT_SECONDARY_COLOR) should return 4 values, not 3
   1329 <li>fixed compilation problem on Solaris7/x86 (bug 536406)
   1330 <li>fixed prefetch bug in 3DNow! code (Felix Kuhling)
   1331 <li>fixed NeXT build problem (FABSF macro)
   1332 <li>glDrawPixels Z values when glPixelZoom!=1 were invalid (bug 687811)
   1333 <li>zoomed glDraw/CopyPixels with clipping sometimes failed (bug 689964)
   1334 <li>AA line and triangle Z values are now rounded, not truncated
   1335 <li>fixed color interpolation bug when GLchan==GLfloat (bug 694461)
   1336 <li>glArePrograms/TexturesResident() wasn't 100% correct (Jose Fonseca)
   1337 <li>fixed a minor GL_COLOR_MATERIAL bug
   1338 <li>NV vertex program EXP instruction was broken
   1339 <li>glColorMask misbehaved with X window / pixmap rendering
   1340 <li>fix autoconf/libtool GLU C++ linker problem on Linux (a total hack)
   1341 <li>attempt to fix GGI compilation problem when MesaDemos not present
   1342 <li>NV vertex program ARL-relative fetches didn't work
   1343 </ul>
   1344 Changes:
   1345 <ul>
   1346 <li>use glPolygonOffset in gloss demo to avoid z-fighting artifacts
   1347 <li>updated winpos and pointblast demos to use ARB extensions
   1348 <li>disable SPARC normal transformation code (bug 673938)
   1349 <li>GLU fixes for OS/2 (Evgeny Kotsuba)
   1350 </ul>
   1351 
   1352 
   1353 <h2>5.0.2  September 5, 2003</h2>
   1354 Bug fixes:
   1355 <ul>
   1356 <li>fixed texgen problem causing texcoord's Q to be zero (stex3d)
   1357 <li>default GL_TEXTURE_COMPARE_MODE_ARB was wrong
   1358 <li>GL_CURRENT_MATRIX_NV query was wrong
   1359 <li>GL_CURRENT_MATRIX_STACK_DEPTH_NV query was off by one
   1360 <li>GL_LIST_MODE query wasn't correct
   1361 <li>GL_FOG_COORDINATE_SOURCE_EXT query wasn't supported
   1362 <li>GL_SECONDARY_COLOR_ARRAY_SIZE_EXT query returned wrong value
   1363 <li>blended, wide lines didn't always work correctly (bug 711595)
   1364 <li>glVertexAttrib4svNV w component was always 1
   1365 <li>fixed bug in GL_IBM_rasterpos_clip (missing return)
   1366 <li>GL_DEPTH_TEXTURE_MODE = GL_ALPHA didn't work correctly
   1367 <li>a few Solaris compilation fixes
   1368 <li>fixed glClear() problem for DRI drivers (non-existant stencil, etc)
   1369 <li>fixed int/REAL mixup in GLU NURBS curve evaluator (Eric Cazeaux)
   1370 <li>fixed delete [] bug in SI GLU (bug 721765) (Diego Santa Cruz)
   1371 <li>glFog() didn't clamp fog colors
   1372 <li>fixed bad float/int conversion for GL_TEXTURE_PRIORITY in the
   1373 	  gl[Get]TexParameteri[v] functions
   1374 <li>fixed invalid memory references in glTexGen functions (bug 781602)
   1375 <li>integer-valued color arrays weren't handled correctly
   1376 <li>glDrawPixels(GL_DEPTH_COMPONENT) with glPixelZoom didn't work
   1377 <li>GL_EXT_texture_lod_bias is part of 1.4, overlooked in 5.0.1
   1378 </ul>
   1379 Changes:
   1380 <ul>
   1381 <li>build GLUT with -fexceptions so C++ apps propogate exceptions
   1382 </ul>
   1383 
   1384 
   1385 <h2>5.1  December 17, 2003</h2>
   1386 New:
   1387 <ul>
   1388 <li>reorganized directory tree
   1389 <li>GL_ARB_vertex/fragment_program extensions (Michal Krol &amp; Karl Rasche)
   1390 <li>GL_ATI_texture_env_combine3 extension (Ian Romanick)
   1391 <li>GL_SGI_texture_color_table extension (Eric Plante)
   1392 <li>GL_NV_fragment_program extension
   1393 <li>GL_NV_light_max_exponent extension
   1394 <li>GL_EXT_texture_rectangle (identical to GL_NV_texture_rectangle)
   1395 <li>GL_ARB_occlusion_query extension
   1396 <li>GL_ARB_point_sprite extension
   1397 <li>GL_ARB_texture_non_power_of_two extension
   1398 <li>GL_IBM_multimode_draw_arrays extension
   1399 <li>GL_EXT_texture_mirror_clamp extension (Ian Romanick)
   1400 <li>GL_ARB_vertex_buffer_object extension
   1401 <li>new X86 feature detection code (Petr Sebor)
   1402 <li>less memory used for display lists and vertex buffers
   1403 <li>demo of per-pixel lighting with a fragment program (demos/fplight.c)
   1404 <li>new version (18) of glext.h header
   1405 <li>new spriteblast.c demo of GL_ARB_point_sprite
   1406 <li>faster glDrawPixels in X11 driver in some cases (see relnotes/5.1)
   1407 <li>faster glCopyPixels in X11 driver in some cases (see relnotes/5.1)
   1408 </ul>
   1409 Bug fixes:
   1410 <ul>
   1411 <li>really enable OpenGL 1.4 features in DOS driver.
   1412 <li>fixed issues in glDrawPixels and glCopyPixels for very wide images
   1413 <li>glPixelMapf/ui/usv()'s size parameter is GLsizei, not GLint
   1414 <li>fixed some texgen bugs reported by Daniel Borca
   1415 <li>fixed wglMakeCurrent(NULL, NULL) bug (#835861)
   1416 <li>fixed glTexSubImage3D z-offset bug (Cedric Gautier)
   1417 <li>fixed RGBA blend enable bug (Ville Syrjala)
   1418 <li>glAccum is supposed to be a no-op in selection/feedback mode
   1419 <li>fixed texgen bug #597589 (John Popplewell)
   1420 </ul>
   1421 Changes:
   1422 <ul>
   1423 <li>dropped API trace feature (src/Trace/)
   1424 <li>documentation overhaul.  merged with website content.  more html.
   1425 <li>glxgears.c demo updated to use GLX swap rate extensions
   1426 <li>glTexImage1/2/3D now allows width/height/depth = 0
   1427 <li>disable SPARC asm code on Linux (bug 852204)
   1428 </ul>
   1429 
   1430 
   1431 <h2>6.0  January 16, 2004</h2>
   1432 New:
   1433 <ul>
   1434 <li>full OpenGL 1.5 support
   1435 <li>updated GL/glext.h file to version 21
   1436 Changes:
   1437 <li>changed max framebuffer size to 4Kx4K (MAX_WIDTH/HEIGHT in config.h)
   1438 Bug fixes:
   1439 <li>fixed bug in UNCLAMPED_FLOAT_TO_UBYTE macro; solves a color
   1440 	  clamping issue
   1441 <li>updated suno5-gcc configs
   1442 <li>glColor3 functions sometimes resulted in undefined alpha values
   1443 <li>fixed FP divide by zero error seen on VMS with xlockmore, others
   1444 <li>fixed vertex/fragment program debug problem (bug 873011)
   1445 <li>building on AIX with gcc works now
   1446 <li>glDeleteProgramsARB failed for ARB fragment programs (bug 876160)
   1447 <li>glDrawRangeElements tried to modify potentially read-only storage
   1448 <li>updated files for building on Windows
   1449 </ul>
   1450 
   1451 
   1452 <h2>6.0.1  April 2, 2004</h2>
   1453 New:
   1454 <ul>
   1455 <li>upgraded glext.h to version 22
   1456 <li>new build targets (Dan Schikore)
   1457 <li>new linux-x86-opteron build target (Heath Feather)
   1458 </ul>
   1459 Bug fixes:
   1460 <ul>
   1461 <li>glBindProgramARB didn't update all necessary state
   1462 <li>fixed build problems on OpenBSD
   1463 <li>omit CVS directories from tarballs
   1464 <li>glGetTexImage(GL_COLOR_INDEX) was broken
   1465 <li>fixed an infinite loop in t&amp;l module
   1466 <li>silenced some valgrind warnings about using unitialized memory
   1467 <li>fixed some compilation/link glitches on IRIX (Mike Stephens)
   1468 <li>glBindProgram wasn't getting compiled into display lists
   1469 <li>GLX_FBCONFIG_ID wasn't recognized in glXChooseFBConfig() (bug 888079)
   1470 <li>two-sided lighting and vertex program didn't work (bug 887330)
   1471 <li>stores to program parameter registers in vertex state programs
   1472 	  didn't work.
   1473 <li>fixed glOrtho bug found with gcc 3.2.2 (RH9)
   1474 <li>glXCreateWindow() wasn't fully implemented (bug 890894)
   1475 <li>generic vertex attribute arrays didn't work in display lists
   1476 <li>vertex buffer objects' default usage and access fields were wrong
   1477 <li>glDrawArrays with start!=0 was broken
   1478 <li>fragment program PK2H, UP2H, UP4B and UP4UB instructions were broken
   1479 <li>linux-osmesa16-static config didn't work
   1480 <li>fixed a few color index rendering problems (bug 910687)
   1481 <li>glInterleavedArrays didn't respect GL_CLIENT_ACTIVE_TEXTURE
   1482 <li>OSMesa RGB and BGR modes were broken
   1483 <li>glProgramStringARB mistakenly required a null-terminated string
   1484 <li>fragment program XPD instruction was incorrect
   1485 <li>glGetMaterial() didn't work reliably
   1486 <li>ARB_fragment_program KIL instruction was incorrect
   1487 </ul>
   1488 
   1489 
   1490 <h2>6.1  August 18, 2004</h2>
   1491 New:
   1492 <ul>
   1493 <li>Revamped Makefile system
   1494 <li>glXUseRotatedXFont() utility (see xdemos/xuserotfont.c)
   1495 <li>internal driver interface changes related to texture object
   1496 	  allocation, vertex/fragment programs, BlendEquationSeparate, etc.
   1497 <li>option to walk triangle edges with double-precision floats
   1498 	  (Justin Novosad of Discreet) (see config.h file)
   1499 <li>support for AUX buffers in software GLX driver
   1500 <li>updated glext.h to version 24 and glxext.h to version 6
   1501 <li>new MESA_GLX_FORCE_ALPHA and MESA_GLX_DEPTH_BITS env vars
   1502 <li>updated BeOS support (Philippe Houdoin)
   1503 </ul>
   1504 Changes:
   1505 <ul>
   1506 <li>fragment fog interpolation is perspective corrected now
   1507 <li>new glTexImage code, much cleaner, may be a bit faster
   1508 </ul>
   1509 Bug fixes:
   1510 <ul>
   1511 <li>glArrayElement in display lists didn't handle generic vertex attribs
   1512 <li>glFogCoord didn't always work properly
   1513 <li>ARB_fragment_program fog options didn't work
   1514 <li>frag prog TEX instruction no longer incorrectly divides s,t,r by q
   1515 <li>ARB frag prog TEX and TEXP instructions now use LOD=0
   1516 <li>glTexEnviv in display lists didn't work
   1517 <li>glRasterPos didn't do texgen or apply texture matrix
   1518 <li>GL_DOUBLE-valued vertex arrays were broken in some cases
   1519 <li>fixed texture rectangle edge/border sampling bugs
   1520 <li>sampling an incomplete texture in a fragment program would segfault
   1521 <li>glTexImage was missing a few error checks
   1522 <li>fixed some minor glGetTexParameter glitches
   1523 <li>GL_INTENSITY was mistakenly accepted as a &lt;format&gt; to glTexImage
   1524 <li>fragment program writes to RC/HC register were broken
   1525 <li>fixed a few glitches in GL_HP_occlusion_test extension
   1526 <li>glBeginQueryARB and glEndQueryARB didn't work inside display lists
   1527 <li>vertex program state references were broken
   1528 <li>fixed triangle color interpolation bug on AIX (Shane Blackett)
   1529 <li>fixed a number of minor memory leaks (bug #1002030)
   1530 </ul>
   1531 
   1532 
   1533 <h2>6.2  October 2, 2004</h2>
   1534 New:
   1535 <ul>
   1536 <li>enabled GL_ARB_texture_rectangle (same as GL_NV_texture_rectangle)
   1537 <li>updated Doxygen support (Jose Fonseca)
   1538 </ul>
   1539 Changes:
   1540 <ul>
   1541 <li>some GGI driver updates (Christoph Egger, bug 1025977)
   1542 </ul>
   1543 Bug fixes:
   1544 <ul>
   1545 <li>Omit GL_ARB_texture_non_power_of_two from list of OpenGL 1.5 features
   1546 <li>fixed a few compilation issues on IRIX
   1547 <li>fixed a matrix classification bug (reported by Wes Bethel)
   1548 <li>we weren't reseting the vertex/fragment program error state
   1549 	  before parsing (Dave Reveman)
   1550 <li>adjust texcoords for sampling texture rectangles (Dave Reveman)
   1551 <li>glGet*(GL_MAX_VERTEX_ATTRIBS_ARB) wasn't implemented
   1552 <li>repeated calls to glDeleteTexture(t) could lead to a crash
   1553 <li>fixed potential ref count bugs in VBOs and vertex/fragment programs
   1554 <li>spriteblast demo didn't handle window size changes correctly
   1555 <li>glTexSubImage didn't handle pixels=NULL correctly for PBOs
   1556 <li>fixed color index mode glDrawPixels bug (Karl Schultz)
   1557 </ul>
   1558 
   1559 
   1560 <h2>6.2.1  December 9, 2004</h2>
   1561 Bug fixes:
   1562 <ul>
   1563 <li>don't apply regular fog or color sum when using a fragment program
   1564 <li>glProgramEnvParameter4fARB always generated an error on
   1565 	  GL_FRAGMENT_PROGRAM_ARB (fdo bug 1645)
   1566 <li>glVertexAttrib3svNV and glVertexAttrib3svARB were broken
   1567 <li>fixed width/height mix-up in glSeparableFilter2D()
   1568 <li>fixed regression in glCopyPixels + convolution
   1569 <li>glReadPixels from a clipped front color buffer didn't always work
   1570 <li>glTexImage didn't accept GL_RED/GREEN/BLUE as the format
   1571 <li>Attempting queries/accesses of VBO 0 weren't detected as errors
   1572 <li>paletted textures failed if the palette had fewer than 256 entries
   1573 </ul>
   1574 Changes:
   1575 <ul>
   1576 <li>fixed a bunch of compiler warnings found with gcc 3.4
   1577 <li>bug reports should to go bugzilla.freedesktop.org
   1578 </ul>
   1579 
   1580 
   1581 <h2>6.3  July 20, 2005</h2>
   1582 New:
   1583 <ul>
   1584 <li>GL_EXT_framebuffer_object extension
   1585 <li>GL_ARB_draw_buffers extension
   1586 <li>GL_ARB_pixel_buffer_object extension
   1587 <li>GL_OES_read_format extension (Ian Romanick)
   1588 <li>DirectFB driver (Claudio Ciccani)
   1589 <li>x86_64 vertex transformation code (Mikko T.)
   1590 <li>Updated GL/glext.h to version 29
   1591 </ul>
   1592 Changes:
   1593 <ul>
   1594 <li>added -stereo option for glxgears demo (Jacek Rosik)
   1595 <li>updated the PBuffer demo code in xdemos/ directory
   1596 <li>glDeleteTextures/Programs/Buffers() now makes the object ID
   1597 	available for immediate re-use
   1598 <li>assorted 64-bit clean-ups fixes (x86_64 and Win64)
   1599 <li>lots of internal changes for GL_EXT_framebuffer_object
   1600 </ul>
   1601 Bug fixes:
   1602 <ul>
   1603 <li>some functions didn't support PBO functionality
   1604 <li>glGetTexImage didn't convert color index images to RGBA as required
   1605 <li>fragment program texcoords were sometimes wrong for points and lines
   1606 <li>fixed problem with negative dot product in arbfplight, fplight demos
   1607 <li>fixed bug in perspective correction of antialiased, textured lines
   1608 <li>querying GL_POST_CONVOLUTION_ALPHA_BIAS_EXT returned wrong value
   1609 <li>fixed a couple per-pixel fog bugs (Soju Matsumoto)
   1610 <li>glGetBooleanv(GL_FRAGMENT_PROGRAM_BINDING_NV) was broken
   1611 <li>fixed float parsing bug in ARB frag/vert programs (bug 2520)
   1612 <li>XMesaGetDepthBuffer() returned incorrect value for bytesPerValue
   1613 <li>GL_COLOR_MATERIAL with glColor3 didn't properly set diffuse alpha
   1614 <li>glXChooseFBConfig() crashed if attribList pointer was NULL
   1615 <li>program state.light[n].spot.direction.w was wrong value (bug 3083)
   1616 <li>fragment program fog option required glEnable(GL_FOG) - wrong.
   1617 <li>glColorTable() could produce a Mesa implementation error (bug 3135)
   1618 <li>RasterPos could get corrupted by color index rendering path
   1619 <li>Removed bad XTranslateCoordinates call when rendering to Pixmaps
   1620 <li>glPopAttrib() didn't properly restore GL_TEXTURE_GEN enable state
   1621 <li>fixed a few Darwin compilation problems
   1622 </ul>
   1623 
   1624 
   1625 <h2>6.3.1</h2>
   1626 <p>
   1627 This was an intermediate release for X.org which wasn't otherwise released.)
   1628 </p>
   1629 
   1630 
   1631 <h2>6.3.2  August 19, 2005</h2>
   1632 New:
   1633 <ul>
   1634 <li>The distribution now includes the DRI drivers and GLX code
   1635 </ul>
   1636 Changes:
   1637 <ul>
   1638 <li>Made the DRI "new" driver interface standard, remove old code
   1639 </ul>
   1640 Bug fixes:
   1641 <ul>
   1642 <li>GL_ARB_vertex/fragment_shader were mistakenly listed in the
   1643 	  extensions string
   1644 <li>negative relative addressing in vertex programs was broken
   1645 <li>update/fix SPARC assembly code for vertex transformation
   1646 <li>fixed memory leak when freeing GLX drawables/renderbuffers
   1647 <li>fixed display list memory leak
   1648 <li>the GL_PIXEL_MAP_I_TO_I table is now floating point, not integer
   1649 <li>wglGetProcAddress() didn't handle wgl-functions
   1650 <li>fixed glxext.h cross-compile issue (Colin Harrison)
   1651 <li>assorted DRI driver fixes
   1652 </ul>
   1653 
   1654 
   1655 <b>
   1656 NOTE: Changes for Mesa 6.4 and later are documented in the corresponding
   1657 <a href="relnotes.html">release notes</a> file.
   1658 </b>
   1659 
   1660 </div>
   1661 </body>
   1662 </html>
   1663