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- Xlib version 2 modifications
-
- Files modified:
- XLIB.INC
- XMAIN.ASM
- DEMO.C
-
-
- 26-09-92 - PRIMARILY JUST ADDED SUPPORT FOR PEL PANNING
-
- Pel panning code added to allow for panning to any pixel
- coordinates.
- Functions affected:
- x_set_splitscreen
- Split screen pel panning suppression code added.
- Functionally unchanged.
- x_set_start_addr,x_page_flip
- Pel panning code added. The x parameter now expects
- a pixel coordinate where previously a byte coordinate
- was expected.
-
- Original files modified
- -----------------------
- XLIB.INC
- XMAIN.ASM
- DEMO.C
- Aknowledgements
- ---------------
- Thanks to Robert Schmidt for contributed PEL panning sample
- code and everyone else who responded to my rec.games.programmer
- post.
-
- Xlib version 3 modifications
-
- 10-10-92 - BUG ERADICATION AND ADDITION OF NEW MODULES AND MINOR CODE
- EXTENSIONS
-
- MaxScrollX and MaxScrollY were not always set correctly, now
- that's fixed (I Think)
- Added variable "SplitScrnVisibleHeight" needed for above fix.
- Some miscellaneous code changes
- Included XCBITMAP module generously donated by Matthew MacKenzie
- Added support for the LARGE memory model
- Added a make file to simplify compilation
- Library modules now compiled into .LIB files
- Added a documentation file
- Added XBMTOOLS module containing bitmap type conversion
- Added XDETECT module containing hardware detection functions
- Added C header files for all modules
- ADDED XFILEIO module
- ADDED XRLETOOL module
-
- Original files modified
- -----------------------
- XLIB.INC
- XMAIN.ASM
- DEMO.C
- XTEXT.INC
- XTEXT.ASM
-
- Aknowledgements
- ---------------
- Special thanks to Matthew Mackenzie for an excellent module
- and Darren Lyon for putting together a C header file for XLIB.
- Again thanks also to everyone else who supported this software.
-
- Xlib version 4 modifications
-
-
- 30-10-92 EXTENSIONS TO XLIB 3 AND BUG FIXES
-
- Files Modified
- --------------
- Assume all have been modified
-
- Modifications/Additions
- ------------------------
- **** Fixed ATI VGA incompatibility problem **** 4
- **** Fixed Large Model problems ***************
- Manual : The ref. manual has been split ito two files for
- those editors that cannot cope with file > 64k
- XDETECT: added numeric co-pro detection
- added mouse driver detection
- XMAIN : added new resolution tweaks
- added clipping rectangle setting proc and vars
- further bug fixes (I can't remember exactly what)
- XCBITMAP:Improved performance of compilation and compiled bitmaps
- and added a function to calculate mem required for
- a bitmap compilation
- XPBITMAP:Improved performance of planar bitmaps
- XRECT :Added "x_shift_rect" function
- XPBMTOOL:Added several utility macros
-
- New Modules
- -----------
- XPBMCLIP:Implements clipping versions of functions in XPBITMAP
- XVBITMAP:Video based masked bitmap functions. Contains standard
- and clipping versions of all functions.
- XMAKEVBM:Support module for XVBITMAP
- XMOUSE :Basic mouse support module
- XBEZIER :Fast Bezier curves (For scalable fonts etc..)
-
-
- Xlib version 4b modifications
-
- 10-12-92 BUG FIX RELEASE
-
- Files Modified
- --------------
-
- XMAIN.*
- XPBMCLIP.*
- XVBMCLIP.*
- XCLIPPBM.*
-
- Modifications/Additions
- ------------------------
- Some minor fixes and modifications in xmain.asm
- fixed the split screen starting scan line problem
-
- This fix is a cludge - Sam Thompson has suggested a more
- elegant fix but I just dont have much time these days
-
- changed mode setting code to allow 320x200 mode to have same
- aspect ratio as mode 13h
-
- The clipped functions were modified to return 1 if the image being
- clipped was completely off the logical screen.
- Minor clipping bugs which gave inconsistent results when clipping
- to the left and right screen borders were fixed in the XPBMCLIP &
- VBMCLIP modules.
- A bug in demo 2 which caused crashing on 486 machines was also
- fixed. (The speed of the 486 resulted in 0 time delay which inturn
- caused a division by zero error)
-
- 28-12-92 Modified PEL panning code to be smoother on snail paced PC's
- Added quick & dirty planar bitmap compiler
-
-
- 15-2-93 Converted text module to allow variable width user fonts
-
- Added a function x_get_char_width in module xtext
- Added fonts var6x8.fnt varswisl.fnt varswisb.fnt
- Clened up virt screen start address setting code in xmain.asm
-
- Added demo 8 to preview user defined fonts
-
- Added x_wait_vsync in module xmain
-
- Fixed a bug with mode sets on some VGA bios'es that dont
- preserve CX on an int 10h
-
- 18-8-93 XLIB05 Final Release
- -----------------------------------------------
-
- GENERAL:
- Added C++ compatability in header files
- Added new fonts
- XDETECT: now can differentiate between 386sx 386dx and 486
- (486sx can be verified by absence of FPU)
- XMOUSE:
- Fixed x_mouse_position bug and general xmouse improvements
- Added x_mouse_window function
- XFILEIO:
- Modified f_read and f_write functions xfileio module
- f_read - now reads into near buffer reguardless of model
- f_readfar " " " far " " " "
- f_write " writes " near " " " "
- f_writefar " " " far " " " "
- Added f_tell function to get file position. I beleive I
- improved the error handling a little but I cant remember
- for sure.
- XMAIN:
- Added 2 new resolutions 256x200 & 256x240.
- I dont know why you'd want them but theyre there if you do.
- These came from Draeden of VLA (Did you write them Ben ?)
- I think they may have originally been posted on R.G.P ???
- XRECT:
- Added x_rect_fill_clipped & x_rect_pattern_clipped, probably
- useless but what the heck!
- XPOLYGON:
- New function x_triangle - a fast clipped and filled trinagle
- function ideal for 3D work.
- x_polygon - a clipped and filled polygon function (convex
- polygons only). This one's not the fastest - it splits
- polygons into component triangles and uses the above
- triangle routine to draw them, but still it should
- perform fast enough for most 3D applications.
- MISCELLANEOUS:
- xdiscuss.zip: Included Robert Schmidt's excellent mode X article
- for those interested in the hows and why's of Mode X progamming
- xlibtl02.zip: Some bitmap conversion code and a TSR bitmap
- capture program.
-
-
- Aknowledgements
- ---------------
- Gerald Dalley - For getting me off my butt and doing
- this release.
-
- Steve Dollins - Never returned my mail asking for
- permission to use his code so I
- assumed it'd be OK ;)
-
- Christian Harms - For suggesting xdetect improvements and
- promising to make XLIB for T.P. freeware
- when its complete. good on ya mate!
-
- Jason Truong - For spotting the bug in xmouse and
- general suggestions for improvements
-
- Chris Kirby - For suggestion to make .h files C++
- compliant
-
- Robert Scmidt - For his mode X article.
-
- jeremi@ee.ualberta.ca - Thanks for the xtext suggestions
- (name unknown) even if they didnt make this release
-
- And others whom I may have forgotten.
-
- Also Greetings to my internet pals,
- Mat Mackenzie, Jari Karjala, Draeden, Victor Putz,
- Josh Jensen, Chicken and the rest of you dudes...
- Thanks for helping my productivity live up to
- "Public Servant" standards ;-))
-
- 5-10-93
- -----------------------------------------------
- XCBITM32:
- 32 bit compiled bitmaps, originally developed by Matthew
- Mackenzie for our game. NOTE: The compiler is written in C -
- conversion to assembler is left as an excersise for the user :-)
-
- XMOUSE: Finished x_mouse_window this time. I had overlooked
- its semi-completed x_mouse_window function in the last release.
-
- XPBITMAP:
- Added x_flip_pbm and x_flip_masked_pbm
- Identical to x_put_pbm and x_put_masked_pbm but have an
- extra parameter which indicates whether the bitmap is flipped
- from left to right as drawn or not - Ideal for saving bitmap
- memory.
-
- XFILL:
- Added a new module containing 2 flood fill variants. Both return
- the number of pixels filled.
-
- XVSYNC:
- New module to synchronise timer 0 to the vertical retrace. This
- allows for smoother animation due to the elimination of
- unnecessary vsync waiting.
-
- XMAIN:
- Modifications to allow standard vsync polling or optional
- timer0/vsync synchronization and new support for tripple
- buffering for super-smooth animation. This stuff's way cool!
-
- BUGS:
- fixed the odd bug here and there - nothing too serious.
-
-
- Aknowledgements:
-
- Tiaan A Geldenhuys - for pointing out that I forgot to finish
- some code in xmouse.asm, for the new cursor shape and stuff.
-
- Thanks to Tore Jahn Bastiansen (toreba@ifi.uio.no) for the
- tripple buffering extensions to XMAIN and the excellent
- Timer vsync sunchronization which is the highlight of this
- release. This module is a "MUST HAVE" if youre going to do
- any animation.
-
- Also thanks to any others, whom I may have lost track of,
- for bug fixes'n stuff.
-
- Apologies to the person who sent me the pbm flipping code.
-