https://bugs.freedesktop.org/show_bug.cgi?id=51421
Golubev Yaroslav My3blkant50@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |NOTABUG
--- Comment #1 from Golubev Yaroslav My3blkant50@gmail.com --- http://glsl.heroku.com/e#2465.1
#ifdef GL_ES precision mediump float; #endif uniform float time; uniform vec2 mouse; uniform vec2 resolution;
void main( void ) { float bla = gl_FragCoord.x/resolution.x; float value = sin((bla-0.5)*100.0); gl_FragColor = vec4(value,value,value, 1.0 ); }
1) according to specification sin accepts angle in radians: 2) also gl_FragColor.# should be in [0;1], but sin (x in (0;-pi))<0
=> float value = abs(sin(radians((bla-0.5)*100.0))); works fine