blob: d283f7dcf6ea08f3caaf7b69e1b70a29bfb4b487 [file] [log] [blame]
#version 100
uniform highp float u_skRTHeight;
precision mediump float;
precision mediump sampler2D;
uniform highp vec4 uellipse_Stage1;
uniform highp vec2 uscale_Stage1;
uniform sampler2D uTextureSampler_0_Stage0;
varying highp vec2 vlocalCoord_Stage0;
void main() {
highp vec4 sk_FragCoord = vec4(gl_FragCoord.x, u_skRTHeight - gl_FragCoord.y, gl_FragCoord.z, gl_FragCoord.w);
mediump vec4 outputColor_Stage0;
{
outputColor_Stage0 = vec4(1.0);
highp vec2 texCoord;
texCoord = vlocalCoord_Stage0;
outputColor_Stage0 = texture2D(uTextureSampler_0_Stage0, texCoord);
}
mediump vec4 output_Stage1;
{
highp vec2 d = sk_FragCoord.xy - uellipse_Stage1.xy;
{
d *= uscale_Stage1.y;
}
highp vec2 Z = d * uellipse_Stage1.zw;
highp float implicit = dot(Z, d) - 1.0;
highp float grad_dot = 4.0 * dot(Z, Z);
{
grad_dot = max(grad_dot, 6.1036000261083245e-05);
}
highp float approx_dist = implicit * inversesqrt(grad_dot);
{
approx_dist *= uscale_Stage1.x;
}
mediump float alpha;
{
alpha = clamp(0.5 - approx_dist, 0.0, 1.0);
}
output_Stage1 = vec4(alpha);
}
{
gl_FragColor = outputColor_Stage0 * output_Stage1;
}
}