OpenGL Update

Okay, this is not a major update, but I decided to start a new thread since the old one was incredibly huge and confusing.
This update contains features that I needed for some games/tests, so I sat down and tried to implement them, hopefully without any bugs...

• Added an action to store the current render in a texture (Easy and limited alternative to "Render to texture").
• Added support for GLSL error logs (There are syntax differences on different hardwares).
• Added 2D and 4D vertices, 2D especially is useful for Ortho Mode.
• Added actions to turn "Auto Frustum" and Ortho Mode on/off.
• Added actions to call glPerspective, glOrtho and glFrustum directly (see above).
• Fixed a possible memory complication with dynamically allocated texture/GLSL buffers.
• Fixed "Clear buffers" and "Load Identity" (Properties, not actions), wouldn't work at all.
• Fixed automatic Ortho Mode deactivation when resizing OpenGL.

By turning off "Auto(matic) Frustum", you can manually call glFrustum, glOrtho and gluPerspective, which is done if it's activated (which it is by default).
glOrtho is used for Ortho Mode, otherwise it's gluPersective.
It only is useful for experienced/advanced users so don't bother if you don't even know what I'm talking about. :D

The link is, as usual, http://looki.lo.funpic.de/OpenGL.zip

Now nothing works, exaples too.

Windows Vista Home Premium
AMD Turion 64 X2 Mobile Technologie TL 60 2.00GHz
NVIDIA GeForce Go 7600

Uggghhh. Can you create a new application and draw a sphere or something like that?
There was a problem with this before the actual release, but it definitely is fixed. I really don't know. :(

Okay, I was able to reproduce the error. I'm going to fix it asap.

Thanks :)

Can you test something for me?
Run an example - It won't work.
Now, go to OpenGL's properties (just go to them, that's all). Run it again. If it works, that'll help a lot.

Quote:

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Originally Posted by Looki

Can you test something for me?
Run an example - It won't work.
Now, go to OpenGL's properties (just go to them, that's all). Run it again. If it works, that'll help a lot.

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Everything works fine, including examples, when you go to the OpenGL properties, Looki. :)

stephen1980

example crashes for me.

What example does? There are many. :)
Can you also provide me your graphics card specifications?

Thanks, stephen1980.

I can't load the extension at all...

I'm using integrated intel 945 Express chipset graphics. Can usually handle 3D fairly well.

I loaded in the OpenGL object, clicked around in the properties, and then tried to load some examples. It didn't crash, but it just deleted the frame.

- Mel

Wow. I am clueless. That's supposed to happen when the property structure of the object changed, but it hasn't - at all. I'm going to have a look, but I can't promise anything...

Tuna, did you put glew32.dll in Data\Runtime and MMF's root folder?

.. Render To Texture Example works. The others dont for some reason.

- Mel ;)

Looki: yes, it's there... When I try to load any of the examples, I see "Cannot load extension OpenGL.mfx"

Note that I don't see OpenGL in the extensions list either (i can't find it to add it to a project), but the files are in my MMF2 folders as they should be.

I removed them and copied them over again... now it works.

Okay. I'm trying hard to fix this bug. To anyone who's working on a project with this, I suggest you not to use this version since it might seriously screw your applications up. Be careful ;)

I am positive that it is fixed now. I took the source of the old version (See last thread) and added the few fixes and new actions.

Please tell me if the examples work immediately, http://looki.lo.funpic.de/OpenGL.zip

Confirmed, it works for me now

That's great news, thanks. :) It's working for me, you and another guy. I think this bug is terminated...

nice job

note that the OBJGLSL.mfa opens but crashes on run when pressing F8. I haven't tried to compile and run this one...

What's your graphics card? It might not support GLSL. Does frame 2 work? If it does, there probably is something wrong with the OBJ loader. Maybe the file is missing?

Mobile Intel 965 Express... likely does not support it. Both frames fail.

I've got the same graphics card as Tuna. Same problem with the OBJ loader. Also, nothing happens with the Xlua example. I noticed some of the actions say "deprecated"?

The other examples are working now at least! :)

- Mel

Yes, the XLua example is quite outdated. I should remove it since XLua comes with some cool OpenGL examples.

Everything is working perfectly for me now, Looki. Thanks for the fast fix. I almost had a heart attack when adding that version to my game! :D

stephen1980

The example that comes with XLua is just your example updated to run under the new library model. You're free to include it if you like.

So what's the plan for the OBJ loader - Is it fixable? I remember an early version of your object where it worked fine on my laptop - now I'm getting crashes.

Seems to be common with people who have the integrated Intel graphics chipsets.

BTW - Great work on this object, keep it up! :)

- Mel ;)

Great extension, thanks for the update :D

How does expression:Conversion:On-screen to 3D work? Does it work like gluUnProject? If so then im not using it right, because im not getting world coordinates that i would like.

They're not working properly. I've fixed that for the next build (Also added gluProject)... the only problem is, I'm having some trouble with old MFA files again. You have to view the object's properties before running old MFA's. I want to fix that.

can the 256 textures limit be increased?

because... i'd probably need way more than that

and that's before taking bitmap fonts into account

Unlimited texture support was alreaddy added; see the obejcts properties.

huh i guess i was using an older version of the extension somehow

okay then!

from some of the limited testing i've done, apparently the object won't render anything (just shows the clearing color) on vista/7 if depth mask is disabled

I've having some of these "from time to time" problems with multisampling too. Sometimes the app would run at like 0.5 fps... meh. I have yet to find out why, I don't know why this would happen... Thanks for reporting.

Hi all, i made small extension for xlua that include few glu functions. Unfortunately i didnt find any existing lua library for it, that i could compile, so i had to code it myself. So bugs are to be expected. I would really appreciate if someone else could test it.
Currently included functions are glu.Ortho, glu.Perspective, glu.LookAt, glu.Project and glu.UnProject.
Link:
http://loki.utkr.net/LuaGlu.zip
Please, let me know if you run into errors or bad behavior.Thanks

Quote:

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Originally Posted by Looki

Added 4D vertices

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How doe's that work?

Just wondering will this get a help file as it ends it's beta stage? Even if it's very close to the main OpenGl it would be helpful i think. Thanks :)

Algul, that's cool! :) Going to try it out sometime.
Dragonguy, well, it's another dimension, a 3D vertex has a default W value of 1, for example.
Atom: Likely, but I'm not even sure if this object ever will be finished :blush: