export declare const barVertexShaderSource = "\n    precision mediump float;\n\n    attribute vec2 a_position;\n    attribute vec2 a_center;\n    attribute vec2 a_halfSize;\n    attribute vec4 a_color;\n    attribute vec4 a_cornerRadii;\n\n    varying vec4 v_color;\n    varying vec2 v_pos;\n    varying vec2 v_halfSize;\n    varying vec4 v_cornerRadii;\n\n    uniform vec2 u_resolution;\n\n    void main() {\n      vec2 position = a_center + a_position * a_halfSize;\n      vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0;\n      gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);\n\n      v_color = a_color;\n      v_pos = a_position * a_halfSize;\n      v_halfSize = a_halfSize;\n      v_cornerRadii = a_cornerRadii;\n    }\n  ";
export declare const barFragmentShaderSource = "\n    precision mediump float;\n\n    varying vec4 v_color;\n    varying vec2 v_pos;\n    varying vec2 v_halfSize;\n    varying vec4 v_cornerRadii;\n\n    \n    float roundedBoxSDF(vec2 pos, vec2 halfSize, vec4 r) {\n      float radius;\n      if (pos.x < 0.0) {\n        radius = pos.y < 0.0 ? r.x : r.w;\n      } else {\n        radius = pos.y < 0.0 ? r.y : r.z;\n      }\n\n      vec2 q = abs(pos) - halfSize + radius;\n      return min(max(q.x, q.y), 0.0) + length(max(q, 0.0)) - radius;\n    }\n  \n\n    void main() {\n      float dist = roundedBoxSDF(v_pos, v_halfSize, v_cornerRadii);\n      // Anti-alias only outside the SDF (dist >= 0). Starting smoothstep at 0\n      // keeps interior pixels at full color instead of fading them.\n      float alpha = 1.0 - smoothstep(0.0, 0.5, dist);\n\n      gl_FragColor = vec4(v_color.rgb, v_color.a * alpha);\n    }\n  ";