Hi there
I'm trying to take my first step with Kha by following Lubos' beginner tuorials for Kha 3d at http://luboslenco.com/kha3d/ but have created a FlashDevelop project with a Flash target (using haxelib run kha flash) and don't understand how the glsl code gets compiled to agal.

In the tutorial it mentions:
For shaders, Kha uses GLSL syntax. Shaders are automatically cross-compiled based on target system using a tool called Krafix, meaning we do not have to worry about rewriting them
But when i compile the FD project it's not automatically compiling any agal shader files as far as i can tell.

Could anyone explain how this is done? Am I missing an FD compiler option perhaps, or need to run Krafix manually? I think the tutorials are written for WebGL and there is no mention of running on the flash target so I'm assuming there are more steps but can't find any documentation or references as to what they are?

Very excited to get rolling with this by the way Robert, looks great from what I've read about it so far!

Thanks
Sean

That does happen automatically when you run khamake (aka "haxelib run kha flash"). At least it should. Do you see any agal files in the build/flash subdirectory? Do you get any error message when you run khamake?

Aah! Thanks for the reply Robert
I was under the impression you only need to run that command to make the project in the first place, i.e. to create the build directory with FD template files and so on, so I was just compiling the Haxe code normally within flashdevelop and it was running with code changes (such as changing the color in the clear call to the graphics object and so on).
So to compile any shaders you need to also run the khamake command again?
What would you recommend as best practise for compiling? Should I always call khamake or only when I update shader code? It seems that everything else builds and executes with a normal f5 hit.
As you can probably tell I'm completely new to Kha and fairly new to Haxe so forgive me if I'm asking obvious questions here but maybe they'll help others coming in from the same angle.
No error messages when i run khamake now - the agal shaders do compile into the build/flash subdir but a weird one is when I run that the debugger has the following complaint on its call to flash.display3D::Program3D/upload : AGAL validation failed: Temporary register read without being written to for source operand 1 at token 1 of fragment program.
That happens from running the simplest of shaders - the simple.vert and simple.frag from Lubos' tutorial which simply output each vertex position of a triangle and colour it red). Any ideas?

I usually only call khamake when shaders or assets changed. And no worries, your questions are indeed helpful.
Your shader error might be my fault, I recently implemented my own AGAL backend in the compiler (it used Adobe's GLSL compiler before). Will have a look tomorrow evening.

OK good to know the process, I'm sure it will all be more obvious once i get a bit deeper into it.
Looking forward to having a play with it once you have the AGAL issue fixed - thank you for looking into it when you have the time.
Cheers
Sean

Sorry to have bumped this old post, but is there an update to this problem? The AGAL fragment shader error still persists

Sorry, still not done

@Robert Oh it's fine, no rush or anything haha. I was just wondering if I missed an important update or patch. Thanks!