Print Page - GI refraction on Amd/Ati GPU

Title: GI refraction on Amd/Ati GPU
Post by: Crist-JRoger on January 23, 2017, 07:57:41 PM

Don't remember exactly said or not, so... houston we have a problem
Since i got AMD HD7850 all GI renders don't works properly with refraction. Now it looks like reflection :-X please help, i tried all (AnimatedModVinz_EiffieGi2.frag, eiffieGI.frag, Kisocahedron - EiffieGi2.frag, MagGlass.frag)

(http://img07.deviantart.net/f93f/i/2017/023/0/2/2017_01_23_193834_by_c_jr-dawgo3q.jpg)

(http://img09.deviantart.net/adbe/i/2017/023/1/3/2017_01_23_194432_by_c_jr-dawgo3y.jpg)

Title: Re: GI refraction on Amd/Ati GPU
Post by: 3dickulus on January 24, 2017, 02:40:07 AM

I googled "AMD HD 7850 GLSL does not render correctly" and found some interesting stuff re:fixed pipeline
you might have to edit the #version line to...
#version 420 compatibility
...and change all occurrences of varying to in/out
the AMD 7000 series reportedly has some issues with legacy GLSL

Title: Re: GI refraction on Amd/Ati GPU
Post by: Crist-JRoger on January 24, 2017, 07:36:18 AM

Quote from: 3dickulus on January 24, 2017, 02:40:07 AM

Thank you! I'll try when come back to home PC. Do you have complete list of issues? Or call version corrects all?

Title: Re: GI refraction on Amd/Ati GPU
Post by: Crist-JRoger on January 24, 2017, 06:13:43 PM

Can't change all varying to in/out in 3D.frag

Code:

Could not create vertex shader: Vertex shader failed to compile with the following errors:
ERROR: 1:20: error(#421) Keyword or operator "out" usage incorrect. GLSL version number 130 is required.
ERROR: error(#273) 1 compilation errors.  No code generated

when call #version 130 or another to 420 - nothing... :sad1:

Title: Re: GI refraction on Amd/Ati GPU
Post by: 3dickulus on January 25, 2017, 04:32:34 AM

requires the word "compatibility" so the line looks like...

#version 420 compatibility

...this is supposed to help with running some legacy glsl code, I don't have a list of issues or AMD 7000 series card to test :(

here is a tutorial about using in and out http://www.lighthouse3d.com/tutorials/glsl-tutorial/color-example/

EDIT: Varying variables provide an interface between Vertex and Fragment Shader. I think this is where the 7000 series has a problem, requiring 2 discrete variables to do the same thing.

my nVidia card reports...

Code:

Fragment shader compiled with warnings: Fragment info
-------------
0(256) : warning C7555: 'varying' is deprecated, use 'in/out' instead
0(257) : warning C7555: 'varying' is deprecated, use 'in/out' instead
0(258) : warning C7555: 'varying' is deprecated, use 'in/out' instead
...

but only warnings, no errors, it compiles and runs the shader with no visible difference.

Title: Re: GI refraction on Amd/Ati GPU
Post by: Crist-JRoger on January 25, 2017, 05:38:41 AM

Quote from: 3dickulus on January 25, 2017, 04:32:34 AM

#version 420 compatibility

Still nothing.. :-
And no any warnings.

GI code has no varyings. 3D.frag and BuferShader - yes.
When i change varying in 3D.frag to out i got this:

Code:

Could not create vertex shader: Vertex shader failed to compile with the following errors:
ERROR: 1:20: error(#421) Keyword or operator "out" usage incorrect. GLSL version number 130 is required.
ERROR: error(#273) 1 compilation errors.  No code generated

Title: Re: GI refraction on Amd/Ati GPU
Post by: Crist-JRoger on August 23, 2017, 11:03:44 AM

Long time no see :D
Problem was in drivers. Solved with new Crimson.

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Fractal Software => Fragmentarium => Topic started by: Crist-JRoger on January 23, 2017, 07:57:41 PM