Test to show issue with discard in loop

discard in loop inside condition on frag coordinate fires always.
Only when the discard is outside the loop is the behavior as expected
Tests
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	GLSLAggressiveForLoopOptimization.html
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	GLSLAggressiveForLoopOptimization.html

Merged