src/cobalt/renderer/glimp_shaders/glsl/fragment_skia_circle_masked_circle_edge.glsl

#version 100
precision mediump float;
uniform vec3 ucircle_Stage1;
uniform float uRTHeight;
uniform vec3 ucircle_Stage2;
varying vec4 vColor;
varying vec4 vCircleEdge_Stage0;
void main() 
{
	vec4 fragCoordYDown = vec4(gl_FragCoord.x, uRTHeight - gl_FragCoord.y, 1.0, 1.0);
	vec4 output_Stage0;
	{
		// Stage 0: CircleEdge
		float d = length(vCircleEdge_Stage0.xy);
		float edgeAlpha = clamp(vCircleEdge_Stage0.z - d, 0.0, 1.0);
		output_Stage0 = vec4(edgeAlpha);
	}
	vec4 output_Stage1;
	{
		// Stage 1: Circle
		float d = length(ucircle_Stage1.xy - fragCoordYDown.xy) - ucircle_Stage1.z;
		d = clamp(d, 0.0, 1.0);
		output_Stage1 = (output_Stage0 * d);
	}
	vec4 output_Stage2;
	{
		// Stage 2: Circle
		float d = ucircle_Stage2.z - length(fragCoordYDown.xy - ucircle_Stage2.xy);
		d = clamp(d, 0.0, 1.0);
		output_Stage2 = (output_Stage1 * d);
	}
	gl_FragColor = (vColor * output_Stage2);
}