1 Xlib version 2 modifications
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9 26-09-92 - PRIMARILY JUST ADDED SUPPORT FOR PEL PANNING
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11 Pel panning code added to allow for panning to any pixel
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15 Split screen pel panning suppression code added.
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16 Functionally unchanged.
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17 x_set_start_addr,x_page_flip
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18 Pel panning code added. The x parameter now expects
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19 a pixel coordinate where previously a byte coordinate
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22 Original files modified
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23 -----------------------
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29 Thanks to Robert Schmidt for contributed PEL panning sample
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30 code and everyone else who responded to my rec.games.programmer
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33 Xlib version 3 modifications
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35 10-10-92 - BUG ERADICATION AND ADDITION OF NEW MODULES AND MINOR CODE
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38 MaxScrollX and MaxScrollY were not always set correctly, now
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39 that's fixed (I Think)
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40 Added variable "SplitScrnVisibleHeight" needed for above fix.
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41 Some miscellaneous code changes
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42 Included XCBITMAP module generously donated by Matthew MacKenzie
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43 Added support for the LARGE memory model
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44 Added a make file to simplify compilation
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45 Library modules now compiled into .LIB files
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46 Added a documentation file
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47 Added XBMTOOLS module containing bitmap type conversion
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48 Added XDETECT module containing hardware detection functions
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49 Added C header files for all modules
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50 ADDED XFILEIO module
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51 ADDED XRLETOOL module
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53 Original files modified
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54 -----------------------
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63 Special thanks to Matthew Mackenzie for an excellent module
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64 and Darren Lyon for putting together a C header file for XLIB.
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65 Again thanks also to everyone else who supported this software.
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67 Xlib version 4 modifications
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70 30-10-92 EXTENSIONS TO XLIB 3 AND BUG FIXES
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74 Assume all have been modified
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76 Modifications/Additions
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77 ------------------------
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78 **** Fixed ATI VGA incompatibility problem **** 4
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79 **** Fixed Large Model problems ***************
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80 Manual : The ref. manual has been split ito two files for
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81 those editors that cannot cope with file > 64k
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82 XDETECT: added numeric co-pro detection
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83 added mouse driver detection
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84 XMAIN : added new resolution tweaks
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85 added clipping rectangle setting proc and vars
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86 further bug fixes (I can't remember exactly what)
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87 XCBITMAP:Improved performance of compilation and compiled bitmaps
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88 and added a function to calculate mem required for
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89 a bitmap compilation
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90 XPBITMAP:Improved performance of planar bitmaps
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91 XRECT :Added "x_shift_rect" function
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92 XPBMTOOL:Added several utility macros
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96 XPBMCLIP:Implements clipping versions of functions in XPBITMAP
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97 XVBITMAP:Video based masked bitmap functions. Contains standard
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98 and clipping versions of all functions.
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99 XMAKEVBM:Support module for XVBITMAP
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100 XMOUSE :Basic mouse support module
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101 XBEZIER :Fast Bezier curves (For scalable fonts etc..)
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104 Xlib version 4b modifications
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106 10-12-92 BUG FIX RELEASE
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116 Modifications/Additions
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117 ------------------------
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118 Some minor fixes and modifications in xmain.asm
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119 fixed the split screen starting scan line problem
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121 This fix is a cludge - Sam Thompson has suggested a more
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122 elegant fix but I just dont have much time these days
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124 changed mode setting code to allow 320x200 mode to have same
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125 aspect ratio as mode 13h
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127 The clipped functions were modified to return 1 if the image being
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128 clipped was completely off the logical screen.
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129 Minor clipping bugs which gave inconsistent results when clipping
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130 to the left and right screen borders were fixed in the XPBMCLIP &
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132 A bug in demo 2 which caused crashing on 486 machines was also
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133 fixed. (The speed of the 486 resulted in 0 time delay which inturn
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134 caused a division by zero error)
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136 28-12-92 Modified PEL panning code to be smoother on snail paced PC's
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137 Added quick & dirty planar bitmap compiler
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140 15-2-93 Converted text module to allow variable width user fonts
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142 Added a function x_get_char_width in module xtext
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143 Added fonts var6x8.fnt varswisl.fnt varswisb.fnt
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144 Clened up virt screen start address setting code in xmain.asm
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146 Added demo 8 to preview user defined fonts
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148 Added x_wait_vsync in module xmain
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150 Fixed a bug with mode sets on some VGA bios'es that dont
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151 preserve CX on an int 10h
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153 18-8-93 XLIB05 Final Release
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154 -----------------------------------------------
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157 Added C++ compatability in header files
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159 XDETECT: now can differentiate between 386sx 386dx and 486
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160 (486sx can be verified by absence of FPU)
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162 Fixed x_mouse_position bug and general xmouse improvements
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163 Added x_mouse_window function
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165 Modified f_read and f_write functions xfileio module
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166 f_read - now reads into near buffer reguardless of model
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167 f_readfar " " " far " " " "
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168 f_write " writes " near " " " "
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169 f_writefar " " " far " " " "
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170 Added f_tell function to get file position. I beleive I
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171 improved the error handling a little but I cant remember
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174 Added 2 new resolutions 256x200 & 256x240.
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175 I dont know why you'd want them but theyre there if you do.
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176 These came from Draeden of VLA (Did you write them Ben ?)
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177 I think they may have originally been posted on R.G.P ???
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179 Added x_rect_fill_clipped & x_rect_pattern_clipped, probably
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180 useless but what the heck!
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182 New function x_triangle - a fast clipped and filled trinagle
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183 function ideal for 3D work.
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184 x_polygon - a clipped and filled polygon function (convex
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185 polygons only). This one's not the fastest - it splits
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186 polygons into component triangles and uses the above
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187 triangle routine to draw them, but still it should
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188 perform fast enough for most 3D applications.
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190 xdiscuss.zip: Included Robert Schmidt's excellent mode X article
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191 for those interested in the hows and why's of Mode X progamming
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192 xlibtl02.zip: Some bitmap conversion code and a TSR bitmap
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198 Gerald Dalley - For getting me off my butt and doing
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201 Steve Dollins - Never returned my mail asking for
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202 permission to use his code so I
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203 assumed it'd be OK ;)
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205 Christian Harms - For suggesting xdetect improvements and
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206 promising to make XLIB for T.P. freeware
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207 when its complete. good on ya mate!
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209 Jason Truong - For spotting the bug in xmouse and
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210 general suggestions for improvements
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212 Chris Kirby - For suggestion to make .h files C++
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215 Robert Scmidt - For his mode X article.
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217 jeremi@ee.ualberta.ca - Thanks for the xtext suggestions
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218 (name unknown) even if they didnt make this release
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220 And others whom I may have forgotten.
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222 Also Greetings to my internet pals,
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223 Mat Mackenzie, Jari Karjala, Draeden, Victor Putz,
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224 Josh Jensen, Chicken and the rest of you dudes...
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225 Thanks for helping my productivity live up to
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226 "Public Servant" standards ;-))
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229 -----------------------------------------------
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231 32 bit compiled bitmaps, originally developed by Matthew
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232 Mackenzie for our game. NOTE: The compiler is written in C -
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233 conversion to assembler is left as an excersise for the user :-)
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235 XMOUSE: Finished x_mouse_window this time. I had overlooked
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236 its semi-completed x_mouse_window function in the last release.
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239 Added x_flip_pbm and x_flip_masked_pbm
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240 Identical to x_put_pbm and x_put_masked_pbm but have an
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241 extra parameter which indicates whether the bitmap is flipped
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242 from left to right as drawn or not - Ideal for saving bitmap
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246 Added a new module containing 2 flood fill variants. Both return
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247 the number of pixels filled.
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250 New module to synchronise timer 0 to the vertical retrace. This
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251 allows for smoother animation due to the elimination of
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252 unnecessary vsync waiting.
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255 Modifications to allow standard vsync polling or optional
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256 timer0/vsync synchronization and new support for tripple
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257 buffering for super-smooth animation. This stuff's way cool!
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260 fixed the odd bug here and there - nothing too serious.
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265 Tiaan A Geldenhuys - for pointing out that I forgot to finish
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266 some code in xmouse.asm, for the new cursor shape and stuff.
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268 Thanks to Tore Jahn Bastiansen (toreba@ifi.uio.no) for the
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269 tripple buffering extensions to XMAIN and the excellent
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270 Timer vsync sunchronization which is the highlight of this
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271 release. This module is a "MUST HAVE" if youre going to do
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274 Also thanks to any others, whom I may have lost track of,
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275 for bug fixes'n stuff.
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277 Apologies to the person who sent me the pbm flipping code.
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