axmol/tests/js-tests/resjs/Shaders/example_Twist.fsh

26 lines
505 B
GLSL

// Shader from here: http://www.iquilezles.org/
#ifdef GL_ES
precision highp float;
#endif
uniform vec2 resolution;
uniform sampler2D tex0;
uniform sampler2D tex1;
void main(void)
{
float time = CC_Time[1];
vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / resolution.xy;
vec2 uv;
float a = atan(p.y,p.x);
float r = sqrt(dot(p,p));
uv.x = r - CC_Time[2];
uv.y = sin(a*10.0 + 2.0*CC_CosTime[0];
vec3 col = (.5+.5*uv.y)*texture2D(tex0,uv).xyz;
gl_FragColor = vec4(col,1.0);
}