[Bug 737505] gltestsrc: implement checkers pattern in GLSL

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=737505
  GStreamer | gst-plugins-bad | git

comicfans44 <comicfans44> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #287321|0                           |1
        is obsolete|                            |

--- Comment #4 from comicfans44 <comicfans44 at gmail.com> 2014-09-29 23:50:13 UTC ---
Created an attachment (id=287409)
 View: https://bugzilla.gnome.org/attachment.cgi?id=287409
 Review: https://bugzilla.gnome.org/review?bug=737505&attachment=287409

v3 fix glsl compliant 

(In reply to comment #3)
> Review of attachment 287321 [details]:
> 
> One small issue :)
> 
> ::: ext/gl/gstgltestsrc.c
> @@ +317,3 @@
> +      float result=mod(xy_mod.x+xy_mod.y,2.0); \
> +      gl_FragColor.r=step(result,0.5); \
> +      gl_FragColor.g=1-gl_FragColor.r; \
> 
> '1-gl_FragColor.r' is not glsl spec compliant and the mesa shader compiler
> fails with it.
> 
> You need to do '1.0-gl_FragColor.r' instead.
fixed, also fix the 'Tab' indent

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