GLSL Shader Actor Tutorial

tomthebom

Hi Mark,

I remember from the workshop, that the GLSL tutorial worked like a charm. I have been trying to repeat the example with the clouds and run into a funny issue under tutorial 2:

I can copy and paste the code. I even manage to see the new actor input in the background to hook up the texture for iChannel0... but I can not close the shader window without the editor compiling the code and complaining about the missing texture. If I cancel, the shader returns to the last working code. What do I do wrong? Best regards, Thomas

Michel

@tomthebom

on line14 change textureLod to texture2D.

tomthebom

@Michel

Hi Michel, thanks a lot. That worked. ;o). May I also ask why? Has the syntax changed or is it something I am not aware of?

DusX

@tomthebom
Where did you find the incorrect code? I am looking to update it, but can't find the reference.

jtoenjes

@DusX

It's in the Clouds (by iq) shader code referenced in part 2 of Mark's GLSL Shader Tutorial

jtoenjes

@mark

None of the image links in this tutorial are working. Maybe with your website redesign this little detail was missed?

Michel

@tomthebom

To be honest I don't know. For another shader code I googled a similar error and there they said replace textureLog, or so, with texture2D.

Best Michel

mark

@jtoenjes :

Regarding the links: I just fixed the links to tex11, tex12, tex15 and tex16. ShaderToy hid these textures under names that change all the time, so I had to create these four and remove the links to the other ones.

Best Wishes,
Mark

jtoenjes

@mark

Thanks!

tomthebom

Hi folks, thanks a lot for your help! Looking forward seeing you hopefully at the werkstatt 2017!

adstilianos

@mark Has a new tutorial been made available anywhere yet? I am just playing with the GLSL Shader and the images are not working and neither is the link under tutorial 2. I am unfamiliar with code so am having issues troubleshooting some of the things I've not been able to find answers to in the forum. Thanks!