yaniki

I need a way to use and manipulate tex_offset_x, tex_offset_y, tex_scale_x, tex_scale_y attributes "inside" object multiplied by [jit.gl.multiple]. glparams attribute of the [jit.gl.multiple] doesn't support offset and scale for textures, so... I started thinking about some workaround. Shaders?

jit-gl-multiple-replacement-for-tex_offset-tex_scale-as-glparams

In this example, you'll how it's done using C74 td.rota.jxs shader.

I used it to do a gl version of jit.scissor. very practical

https://cycling74.com/forums/sharing-jit-gl-scissor-gl-equivalent-of-jit-scissor/

also, you'll be happy to know that you can built your own jit.gl.pix shader patch , export the code and then load it in a

jit.gl.shader to be use with jit.gl.multiple. This saved my life a couple of time :-)!!

the export code method does not work @ the moment .

The work around is to send full_source_code"

message on your jit.gl.pix object / copy paste that code in a textedit in plane texte mode

remember that vec2 means a 2 plane matrix

In this example, you'll how it's done using C74 td.rota.jxs shader.
I used it to do a gl version of jit.scissor. very practical 

also, you'll be happy to know that you can built your own jit.gl.pix shader patch , export the code and then load it in a
jit.gl.shader to be use with jit.gl.multiple. This saved my life a couple of time :-)!! 

the export code method does not work @ the moment . 

The work around is to send full_source_code"
message on your jit.gl.pix object / copy paste that code in a textedit in plane texte mode
save it as a .jxs 

remember that vec2 means a 2 plane matrix 

You solved the problem ;-). This is very robust and clear solution. And the trick with "full_source_code" is extremely valuable.

In the meantime I "discovered", that I can use prefix "attr." to add tex_scale and tex_offset to the parameters exported from [jit.gl.multiple] (e.g. @glparams position rotatexyz scale attr.tex_offset_x attr.tex_offset_y attr.tex_scale_x attr.tex_scale_y - this syntax is, of course, mentioned in [jit.gl.multiple] help file, but I missed it...).

Now I'm testing both methods. Thanks again.

Woah ! no thank you Yaniki :-) !
I'd also overlooked the prefix attr. 

jit.gl.multiple: replacement for tex_offset, tex_scale as glparams