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diff --git a/mesalib/docs/README.AMIWIN b/mesalib/docs/README.AMIWIN new file mode 100644 index 000000000..47cf696cc --- /dev/null +++ b/mesalib/docs/README.AMIWIN @@ -0,0 +1,181 @@ +AMIGA AMIWIN PORT of MESA: THE OPENGL SOFTWARE EMULATION +======================================================== +Port by Victor Ng-Thow-Hing (victorng@dgp.toronto.edu) +Original Author (Brian Paul (brianp@ssec.wisc.edu) + +Dec.1 , 1995: Port of release Mesa 1.2.5 + - Modifications made to minimize changes to Mesa distribution. + +Nov.25, 1995: Port of release Mesa 1.2.4 + + +HISTORY +======= +As a 3D graphics progammer, I was increasingly frustrated to see OpenGL +appearing on so many platforms EXCEPT the Amiga. Up to now, the task +of porting OpenGL directly from native Amiga drawing routines seemed like +a daunting task. However, two important events made this port possible. + +First of all, Brian Paul wrote Mesa, the OpenGL software emulator that +can be found on many platforms - except the Amiga and Atari (who cares +about the latter!). This was pretty ironic considering that Mesa was +originally prototyped on an Amiga! The second great event was when +Holger Kruse developed AmiWin, the X11R6 server for the Amiga (definitely +register for this great piece of software) and released a development kit +so one could compile X programs with SAS/C. + +Since Mesa had X routines as its primitive drawing operations, this made +a marriage of Mesa and Amiwin feasible. I copied over the sources from +an ftp site, played with the code, wrote some Smakefiles, and voila, +I had OpenGL programs displaying on my Amiga. + +Although the speed is nothing to be impressed about, this port can be +potentially useful to those who want to quickly test their code in +wireframe or perhaps learn more about programming with the OpenGL API. + +I hope Amiga developers will continue to write excellent software for +their machine, especially more X clients for Amiwin. If you have any +solutions so some of my problems in the porting notes, please send me +some email! + +See you around, +Vic. + +HOW TO CREATE THE LIBRARIES AND SAMPLE CODE +=========================================== + +Just run the shell script mklib.amiwin in the mesa directory. This will +make all the libraries and copy them into the mesa/lib directory. If you +don't want to compile everything, just go to the desired directory and +type smake in that directory. + +Change any of the variables in the smakefiles as necessary. You will REQUIRE +the Amiwin development kit to compile these libraries since you need X11.LIB +and the shareable X libraries. Some examples require the AmiTCP4.0 +net.lib static link library and related header files for unix related +header files and functions like sleep(). + +HOW TO USE THE MESA LIBRARIES +============================= + +Study the Smakefiles in the demos, samples and book directories for the +proper SAS/C options and linkable libraries to use. Basically aux calls +require Mesaaux.LIB, gl calls require MesaGL.LIB, glu calls MesaGLU.LIB, +tk calls Mesatk.LIB. There is a preliminary port of MesaGLUT.LIB toolkit +available in the lib directory with the other Mesa libraries. However, +it seems to cause crashes on some of the sample code. Someone else may want +to attempt a more stable port. + +PORTING NOTES TO AMIWIN +======================= + +My strategy of porting was to leave as much of the code untouched as +possible. I surrounded any amiga specific changes with +#ifdef AMIWIN ... #endif or #ifndef AMIWIN ... #endif preprocessor +symbols. The code was ported on an Amiga 2000, with Fusion 40 accelerator +and a Picasso II graphics card. The SAS/C 6.56 compiler was used, with +the AmiWin 2.16 X development kit. + +All compilations were done for a 68040 CPU with 68882 math coprocessor for +maximum speed. Please edit the smakefile for other compilers. +I wrote smakefiles for the directories I ported. I omitted the Windows +and Widgets directories. The former is for MS Windows and the latter +requires Motif, which is not easily available for the Amiga. + +Here are the changes I did per directory: + +* mesa +Nov. 25, 1995 v 1.2.4 + - added a mklib.amiwin shell script that will make all the libraries and + sample code for Mesa + - created this readme file: readme.AMIGA + +* mesa/include +Dec. 1, 1995 v 1.2.5 + - added the following to GL/xmesa.h + #ifdef AMIWIN + #include <pragmas/xlib_pragmas.h> + extern struct Library *XLibBase; + #endif +NET CHANGE: xmesa.h + +* mesa/src +Nov. 25, 1995 v 1.2.4 + - added the necessary pragma calls for X functions to the following: + xmesa1.c, xmesa2.c, xmesa3.c, xfonts.c, glx.c + This prevents undefined symbols errors during the linking phase for + X library calls + - created smakefile +Dec. 1, 1995 v 1.2.5 + - removed AMIWIN includes from xmesa1.c, xmesa2.c, xmesa3.c, xfonts.c, + glx.c since they are now defined in include/GL/xmesa.h +NET CHANGE: smakefile + +* mesa/src-tk +Nov. 25, 1995 v 1.2.4 + - added the necessary pragma calls for X functions to the following: + private.h + - created smakefile +Dec. 1, 1995 v 1.2.5 + - removed AMIWIN includes from private.h since it is now defined in + include/GL/xmesa.h +NET CHANGE: smakefile + +* mesa/src-glu +Nov. 25, 1995 v 1.2.4 + - created smakefile +NET CHANGE: smakefile + +* mesa/src-aux +Nov. 25, 1995 v 1.2.4 + - added the necessary pragma calls for X functions to the following: + glaux.c + - created smakefile +NET CHANGE: glaux.c, smakefile + +* mesa/demos +Nov. 25, 1995 v 1.2.4 + - added the necessary pragma calls for X functions to the following: + xdemo.c, glxdemo.c, offset.c + - created smakefile + - put #ifndef AMIWIN ... #endif around sleep() calls in xdemo.c since + they are not part of AmigaDOS. +Dec. 1, 1995 v 1.2.5 + - removed AMIWIN defines from xdemo.c, glxdemo.c, offset.c since + already defined in include/GL/xmesa.h + - modified Smakefile to include header and includes from the AmiTCP4.0 + net.lib linkable library to provide unix-compatible sys/time.h and + the sleep() function + - removed AMIWIN defines in xdemo.c since sleep() now defined +NET CHANGE: smakefile + +* mesa/samples +Nov. 25, 1995 v 1.2.4 + - added the necessary pragma calls for X functions to the following: + oglinfo.c + - created smakefile + - put #ifndef AMIWIN ... #endif around sleep() in blendxor.c + - removed olympic from smakefile targets since <sys/time.h> not defined +Dec. 1, 1995 v 1.2.5 + - removed AMIWIN defines from oglinfo.c, since already defined in + include/GL/xmesa.h + - modified Smakefile to include header and includes from the AmiTCP4.0 + net.lib linkable library to provide unix-compatible sys/time.h and + the sleep() function + - removed AMIWIN defines in blendxor.c for sleep() + - added AMIWIN defines around _MACHTEN_ in olympic.c since xrandom() + functions are not defined in any libraries + - added olympic back into the Smakefile targets +NET CHANGE: smakefile, olympic.c + +* mesa/book +Nov. 25, 1995 v 1.2.4 +- created smakefile +- removed accpersp and dof from smakefile targets since the SAS/C compile seems to + confuse the near,far variables with near/far memory models. +NET CHANGE: smakefile + +* mesa/windows +Dec. 1, 1995 v 1.2.5 +- Removed directory to save space since this is only needed for Windows based + machines. |