GLSL Shader in Gideros?

MikeHart · December 2014

Just saw Atilims GLSL tests on Google+ again, which he did in Febr.2013. Did GLSL shader ever made it into Gideros? That would be awesome. Testing a different tool lately I was amazed what you can do with them. Imho a must to have feature.

SinisterSoft · December 2014

Yep, having shaders would be great.

ar2rsawseen · December 2014

There is a version with GLSL available to play with, but not stable enough to publish your apps with.

http://giderosmobile.com/labs/gideros

techdojo · December 2014

Another stretch goal for the Kickstarter???

Having shader support in Codea makes a world of difference to what's possible with Lua on iDevices.

ar2rsawseen · December 2014

You actually need to ask John if and how that would go, it should be decided before major porting starts

SinisterSoft · December 2014

I think @john26 might be opting to use AngleProject rather than port to DirectX - MS have done a WP8.1 port! - so it might be a lot easier to use that as the codebase will be similar to the other versions - the only thing he should need to add to make the windows version should then be sound (I think)?

With this the shaders will be the same for all the systems (I think).

https://code.google.com/p/angleproject/

https://github.com/MSOpenTech/angle

https://github.com/MSOpenTech/openFrameworks/tree/universal/export/vs

john26 · December 2014

Yes, I think Angle is the way to go. But Angle is only for Open GL ES 2.0 so we will have to convert Gideros to that. But that's a good thing anyway as it allows shader support so killing two birds with one stone! But I need to make sure Angle really works especially on an actual Windows Phone. I will do that over Christmas...

In terms of Gideros devs providing shaders would it be ok for users to set this directly as a string containing GLSL code? That means you would have to learn the GLSL language. One issue is Microsoft does not let you compile shaders on the fly in WP8, you need to precompile into CSO files before submitting you app. So I guess we would provide a template shader with all the "plumbing" and you fill in the code you want and compile.

ar2rsawseen · December 2014

@john26 yes thats how the Gideros 2.0 was created and I think it is completely ok and users who don't know it could use other user's written presets

SinisterSoft · December 2014

If angle does work then you should add the info about moving to GL ES 2.0 to the Kickstarter page. That will be a big pull for people who are not interested in Desktop or MS - but want shader support.

You should also add a stretch goal of simple 3D primatives (polygons, etc). 3D matrixes, etc... (along with Pi if possible).

SinisterSoft · December 2014

Confirmed, shaders coming to Gideros with the Pi Kickstarter stretch goal!

https://www.kickstarter.com/projects/207069325/port-gideros-studio-to-windows-phone-8-and-desktop/posts/1083329

MikeHart · December 2014

If the goal is meet

hgy29 · June 2015

Hey! Why didn't I see this thread before :P

Ok, I've already let it slip that I was working on shaders access from lua. And now I have something working pretty well, don't know when it will get released but I am truly so excited about what I've done so far that I wanted to share it...

So the upcoming features are:
- Create shaders from lua (from HLSL, GLSL or CSO files)
- Dynamically change the uniforms/constants in the shaders from lua
- Assign those shaders to any sprite (replacing default shader with a custom one)
- Ability to specify additional vertex array inputs in Mesh objects
- Ability to assign more than one texture in Mesh objects
- Ability to change the primitive type in Mesh objects

Time to open a Gideros shader repository ?

MikeHart · June 2015

Time to open a Gideros shader repository ?

Definitely!

SinisterSoft · June 2015

+10 !!!!

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