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Date: Sat, 25 Mar 2017 18:01:59 -0700 (PDT)
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Subject: Best way to put an array-based pixmap on a screen?
From: LaeMing Ai <laeming@exemail.com.au>
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Xref: news.eternal-september.org comp.lang.ada:46456
Date: 2017-03-25T18:01:59-07:00
List-Id: <comp.lang.ada>

I am hoping to learn some Ada with an explicit interest in simple software =
3D rendering (ie: writing the render code in Ada, NOT calling external libr=
aries such as OpenGL). I want to set up a shim between my Ada environment a=
nd my Linux Desktop to facilitate monitoring my output, without having to m=
ess about with the daunting (I quickly found) task of interfacing to SDL or=
 GTK+!

All I really want to see from my code's perspective is a 2D array of 32-bit=
 pixel values that I can manipulate from my developing Ada code, and not ha=
ve to worry about the intricacies of window managers. Is it possible to get=
 help constructing a project template providing the following:

- Function to create a non-resizable X11 window of dimensions N high by 2N =
wide (N is nominally valued at 512, but could be any value of 2^x above 256=
).

- Callback for if the above window's close box is activated, to terminate t=
he program.

- Function to copy an array of 2N by N of 32 bit values (8:Red 8:Green 8:Bl=
ue 8:ignored) to the above window.

At this stage I am not concerned with input to the window (other than the c=
lose box terminating the application, would be nice).

Packing it all into a single source file that I can put to the side and lar=
gely ignore would be nice too!

I particularly don't want event loops, or anything else dragged in from out=
side the Ada environment if at all possible - the point of using Ada is to =
learn to do all that /in/ Ada! :-)

I have played around with some AdaGTK examples but keep getting bogged down=
 :-( .=20

Thanks.