jamie jewett

I am trying to work with the jitter tutorial # 41 'shaders'

ERROR: 0.26: 'assign' : cannot convert from '4-component vector of float' to 'varying 3-component vector of float'

•error: jit.gl.shader: GLSL program failed to compile.

I am on a last generation powerbook 15" 1.67Ghz 

ATI Mobility Radeon 9700 - VRAM (Total):128 MB

2 monitors - laptop and "Studio Display 21"

the problem persists regardless of which monitor I render on.

•error:--START GLSL INFO LOG: vp --
ERROR: 0.26: 'assign' : cannot convert from '4-component vector of float' to 'varying 3-component vector of float'
•error:--END GLSL INFO LOG: vp --
•error: jit.gl.shader: GLSL program failed to compile.

I am on a last generation powerbook 15" 1.67Ghz 
ATI Mobility Radeon 9700 -   VRAM (Total):128 MB
OSX 10.4.6
Quicktime 7.1.0
2 monitors - laptop and "Studio Display 21"

jitter-tutorial-41-shaders-error

This may be due to some issues we had when Apple introduced a native Cg 

compiler. Please replace your shaders with the ones at:

https://cycling74.com/download/jitter-shaders051101.dmg

FWIW, we will have updated shaders with the next Jitter version that are 

Hi Jamie,
This may be due to some issues we had when Apple introduced a native Cg 
compiler.  Please replace your shaders with the ones at:

FWIW, we will have updated shaders with the next Jitter version that are 
all fully  GLSL compliant.

Let us know how you get on.
Cheers,
Andrew B.


GLSL doesn't allow automatic promotion from one type to another. It

is very strict about this. Looks like you need to find the offending

line in the shader and and cast it to a vec3. You can do this like

GLSL doesn't allow automatic promotion from one type to another.  It
is very strict about this.  Looks like you need to find the offending
line in the shader and and cast it to a vec3.  You can do this like
the following:

Try replacing mat.dirperpixel.jxs in the tutorial folder with the 

Try replacing mat.dirperpixel.jxs in the tutorial folder with the 
attached version.

Let us know how that goes.
Cheers,
Andrew B.


jitter tutorial 41 Shaders error