Grx December 2001

grx@gnu.de

8 participants
8 discussions

GRX 2.4.4 pre-release 3
by Mariano Alvarez Fernandez 09 Jan '02

09 Jan '02

Hi. I have uploaded a third pre-release of GRX 2.4.4 (the last one I hope). Download it from: http://grx.gnu.de/download/grx244p3.zip MD5SUM for the package: 14b57a23aff79a8d158b274b9e8d8589 *grx244p3.zip Only the zip archive is provided, but note, the zip archive expand to grx244, not to the contrib directory. Changes from 2.4.3 p2: 01/12/22 More patches to the Pascal interface, by Frank Heckenbach and Maurice Lombardi 01/12/22 Added an optional configure script, by Frank Heckenbach 01/12/21 The linuxfb driver now open /dev/fb0 by default. An alternative frame buffer device can be specified setting the environment variable $FRAMEBUFFER 01/12/21 pascal ega colors are now functions, by Frank Heckenbach 01/12/21 fixed some borland bgi incompatibilities, by Frank Heckenbach 01/12/21 added 'const' (C) and 'protected' (Pascal) to some function parameters, to make them a little "safer", by Frank Heckenbach 01/12/16 Added imgview.pas and colortst.pas demo programs, by Frank Heckenbach 01/12/16 Change in the pascal interface: GrAllocEgaColors, GrGetScanline, etc. return a pointer to an array of GrColor, rather than to a single GrColor, by Frank Heckenbach 01/12/16 Make installation of shared libraries optional on Linux/X11 by Frank Heckenbach 01/12/16 GrSaveContextToGrayJpeg added to the pascal interface, by Maurice Lombardi Testing and comments will be welcome. Merry Christmas, M.Alvarez

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Better GRX linuxfb driver
by Mariano Alvarez Fernandez 26 Dec '01

26 Dec '01

Hi, attached to this mail are two modified drivers I expect somebody can test: mouse/lnxinput.c It handles /dev/psaux directly, so it works with the linuxfb driver and even with the svgalib driver (indeed it works better for me than the svgalib mouse driver). The problem: only PS/2 mouses are handled. vdrivers/vd_lnxfb.c It puts the console in graphics or text mode as required, so the text cursor disappear and the mouse driver doesn't collide with GPM. I will be happy if somebody can test: - a PS/2 Intellimouse, if the driver doesn't work with it, the tt.c test program can helps to understand the mouse protocol. - a USB mouse, the linux USB mouse driver has a PS/2 compatible device driver, so opening /dev/input/mice instead /dev/psaux in lnxinput.c must work. Problems: - sometimes at the begining the mouse works badly, exiting the program and reruning it and the problem disappear. - when exit from a grx program the text console doesn't restart well, issuing a simple "ll" command and all is ok. Greetings, M.Alvarez

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Help... Turbo C
by deneme 25 Dec '01

25 Dec '01

Hello There I have got a problem about installing GRX. I have Turbo c / Borland c 3.1 and I was not able to install it. When i say make it give me errors. How can I modify makefile? I can not use DJGPP because my project should be unde turbo c. Please help me. Yours sincerely. Mr. Gild.

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Re: configure
by Frank Heckenbach 21 Dec '01

21 Dec '01

Stupid bug (of mine) ... Frank -- Frank Heckenbach, frank(a)g-n-u.de http://fjf.gnu.de/ PGP and GPG keys: http://fjf.gnu.de/plan

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configure
by Frank Heckenbach 20 Dec '01

20 Dec '01

Hi, as I said recently, I wrote a small configure script now. It doesn't support all options in makedefs.grx yet, just the most important ones and those that I need myself. E.g., I can now do all my settings for Linux/X11 with: ./configure --enable-gpc --enable-jpeg --enable-png-z --with-fontpath (More details, of course, with ./configure --help) The script is completely optional, i.e. those who don't want to use it can configure GRX manually just like before, but those like me who don't want to edit config files by hand should not need to do this anymore. It will just create a link from the appropriate makefile.foo to Makefile (so you can invoke make without `-f makefile.foo' afterwards) and change some settings in makedefs.grx, and if Pascal support is enabled, also the `{$L}' directives in grx.pas and graph.pas. It currently supports X11, svgalib and DJGPP (only X11 really tested), but if wanted, it should be easy to add Mingw support (or more config options). (diff23 -- you must set execute permissions on configure afterwards; patch can't do this) Frank -- Frank Heckenbach, frank(a)g-n-u.de http://fjf.gnu.de/ PGP and GPG keys: http://fjf.gnu.de/plan

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GRX 2.4.4 pre-release 2
by Mariano Alvarez Fernandez 20 Dec '01

20 Dec '01

Hi. I have uploaded a second pre-release of GRX 2.4.4. Download it from: http://grx.gnu.de/download/grx244p2.zip MD5SUM for the package: 48de67cdf90d24be30e4ae4f013e1a61 *grx244p2.zip Only the zip archive is provided, but note, the zip archive expand to grx244, not to the contrib directory. Changes from 2.4.3 p1: 01/11/29 better w32 keyboard handling. Now most special keys with shift, alt and control combinations work 01/11/29 added jpeg functions to grx.pas and jpgtest.pas demo, by Maurice Lombardi 01/11/29 patch to define gpc-main in grx.pas and graph.pas, by Frank Heckenbach 01/11/29 patch to remove warnings on unix in test/bgi programs, by Frank Heckenbach 01/11/16 Added new function: GrSaveContextToGrayJpeg. Now GrLoadContextFromJpeg can load grayscale jpeg files Testing and comments will be welcome. -------- Note for Frank Heckenbach: Frank, I have modified makefiles for linux/x11 to create the instalation subdirs and to install the info manual as suggested. But there are two problems: 1) a normal user can't run install-info 2) running it with root makes a "dir" file in the installation subdirectory, but "info grx" don't work, except if you are in this subdirectory.

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Some more fixes
by Frank Heckenbach 19 Dec '01

19 Dec '01

Hi again, first I've added `const' (C) and `protected' (Pascal) to some function parameters, to make them a little "safer" (diff19 -- also contains some other small corrections). Then I compared graph.pas with Borland's version and noticed (only) the following incompatibilities, some of which are easy to fix (diff20): - GraphGetMemPtr and GraphFreeMemPtr are missing. I'm adding these as dummies. (There are more flexible ways to take over heap allocation with GPC/GCC, so I don't think these pointers are needed. However, if you prefer, I can also add these variables in the C version and make all heap de-/allocation through these variables.) - The fields in ViewPortType are named differently. Since the field names are relevant to user programs, I'm changing them. - EGAMonoHi is 3 in Pascal, not 0. I'm adding 3 as an alternative in src/bgi/bgimode.c and set EGAMonoHi to 3 in graph.pas. - CurrentDriver is -128 while GRX declares Current_Driver (with underscore) as -1. Since this constant doesn't seem to be used anywhere, I'm just changing it. - Same for Detect (0 instead of -2) which also doesn't seem to be used anywhere. - NotPut was missing. I've added it, and supported in it PutImage -- though in a rather crude way, by just inverting the bitmap (temporarily). It might be a little more efficient to do it during the blit, but I didn't want to dive into the drivers and their blitting routines. At least it seems to work now, but you might want to take a closer look at it ... (I didn't add support for NotPut in SetWriteMode because Borland doesn't support it there, either, and it would be quite pointless since it would just amount to using another color.) - And finally: White is a function rather than a constant. This is part of the more general issue that all the other predefined colors (Blue, Green, ...) are not really what their name says. We could also make functions for them (e.g. function Blue which returns EgaColor(1)). This would work for programs which use the EGA colors by name, not for those that use a variable that runs from 0 to 15 or so. But AFAICS there's no easy solution for the latter, anyway. (It would require translating the colors in all the graphic routines, I think.) Anyway, it seems inconsistent to me that White is a function which returns the correct value and the other colors are constants which contain (in general) wrong values. So, what is more important -- that the colors behave as their name says, or that they are constants (and can be used in initializers) with values compatible to BP and to other units (like CRT)? I think the former, so I'm adding the functions (but in a separate patch, diff21, in case you disagree; in that case I'd also suggest making White a constant with value 15). Finally, pascal/bgi/demo.pas mentions some "unknown crashes with GPC". I can't reproduce them (without the "work-around"), neither on Linux nor DJGPP. Does anyone know more about them, or were they perhaps with older versions only? In this case, I'd suggest to remove the note and the "work-around". (diff22) Frank -- Frank Heckenbach, frank(a)g-n-u.de http://fjf.gnu.de/ PGP and GPG keys: http://fjf.gnu.de/plan

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(No Subject)
by alex.thorpe＠talk21.com 11 Dec '01

11 Dec '01

Could you please exaplain to me how functions and procedures work? -------------------- talk21 your FREE portable and private address on the net at http://www.talk21.com

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Grx December 2001