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Wiki Link: [discussion:67595]

Any higher level graphics?

Farok

Sep 1 at 3:50 PM

Edited Sep 1 at 6:01 PM

Hello,

Is there a way in singularity to render graphics that are "higher level" as lines and rectangles, like images or text? Of cause, you can render bitmaps (Besides, the keyboard cannot be detected by slideshow example), but is there a way to render *.png with transparancy or rendering text at a given screen position, like you do in GDI+ with drawText or drawImage? I'm not an expert in programming on in-development operating systems (I have not even seen I line of code from e.g. Linux kernel) so I don't know whether and with which efford it is possible doing so.

Regards, Farok

kpedersen

Sep 6 at 9:15 PM

Edited Sep 6 at 9:18 PM

Hello Farok,

Nothing is easy yet unfortunately but it is possible to write your own line drawing functions by drawing pixels at specific points in the direction to the next point.

I am working on a very simple GUI library using such a method.

I have not looked into getting a PNG with transparency rendered but I have used a bitmap with color (0, 255, 0) to be transparent. (transparency mask)

Would you be interested in working with me on an image / gui library?

Regards,

EDIT: And I have text working but its done much like it is done in oldschool games such as final fantasy where it is bitted from a texture. I.e it is not scalable and is really only decent displayed at its original size :)

kpedersen

Sep 9 at 10:41 AM

Since our short chat on MSN, I would like to add (for anyone else who is interested)

In the video device contract you can see all avaliable messages you can send

http://singularity.codeplex.com/sourcecontrol/changeset/view/17067?projectName=singularity#324166

SendFill, SendPlot etc...

nathanpapke

Nov 6 at 11:20 PM

Perhaps a group of interested individuals can work on such a library. Does anyone know how difficult it would be to port open-source C libraries such as OpenGL and OpenAL over to completely managed versions to run on Singularity?

kpedersen

Nov 20 at 6:47 PM

Edited Nov 20 at 6:53 PM

Thats gonna be beyond the scope of my knowledge but would be quite brilliant. Although I don't believe hardware accelleration is going to be feasible for some time.

OpenGL is a specification rather than a library and looking at an open source implementation of it (MesaGL) its gonna be an awful lot of work.

I am currently working on an X Server (much like a simplified xorg) so that applications can display their GUI on a single display. I think this is one of the easiest ways to get a desktop type thing going. It is proving to be good fun :)

I am going to try for a simple gfx library such as SDL and Cairo once this is complete and so then I can work on some GUI components. It will be very much modelled after javax.swing or GTKmm.

Due to sharing my coding time between this, my work and the Imagine cup I cannot say a deadline for when it will be usable unfortunately.

Singularity RDK