export declare enum Location {
    BARYCENTRIC = 0,
    FRAG_COORD = 1,
    ABCD = 2,
    TXTY = 3,
    POSITION = 4,
    SIZE = 5,
    FILL_COLOR = 6,
    STROKE_COLOR = 7,
    ZINDEX_STROKE_WIDTH = 8,
    OPACITY = 9,
    INNER_SHADOW_COLOR = 10,
    INNER_SHADOW = 11
}
export declare const vert = "\n#define SHIFT_RIGHT23 1.0 / 8388608.0\n#define SHIFT_LEFT23 8388608.0\n#define SHIFT_RIGHT22 1.0 / 4194304.0\n#define SHIFT_LEFT22 4194304.0\n\nlayout(std140) uniform SceneUniforms {\n  mat3 u_ProjectionMatrix;\n  mat3 u_ViewMatrix;\n  mat3 u_ViewProjectionInvMatrix;\n  vec4 u_BackgroundColor;\n  vec4 u_GridColor;\n  float u_ZoomScale;\n  float u_CheckboardStyle;\n};\n\n\n#ifdef USE_WIREFRAME\n  layout(location = 0) in vec3 a_Barycentric;\n  out vec3 v_Barycentric;\n#endif\n\nlayout(location = 1) in vec2 a_FragCoord;\n\n#ifdef USE_INSTANCES\n  layout(location = 2) in vec4 a_Abcd;\n  layout(location = 3) in vec2 a_Txty;\n  layout(location = 4) in vec4 a_Position;\n  layout(location = 5) in vec4 a_Size;\n  layout(location = 6) in vec4 a_FillColor;\n  layout(location = 7) in vec4 a_StrokeColor;\n  layout(location = 8) in vec4 a_ZIndexStrokeWidth;\n  layout(location = 9) in vec4 a_Opacity;\n  layout(location = 10) in vec4 a_InnerShadowColor;\n  layout(location = 11) in vec4 a_InnerShadow;\n#else\n  layout(std140) uniform ShapeUniforms {\n    mat3 u_ModelMatrix;\n    vec4 u_Position;\n    vec4 u_Size;\n    vec4 u_FillColor;\n    vec4 u_StrokeColor;\n    vec4 u_ZIndexStrokeWidth;\n    vec4 u_Opacity;\n    vec4 u_InnerShadowColor;\n    vec4 u_InnerShadow;\n  };\n#endif\n\nout vec2 v_FragCoord;\n#ifdef USE_INSTANCES\n  out vec4 v_FillColor;\n  out vec4 v_StrokeColor;\n  out float v_StrokeWidth;\n  out vec4 v_Opacity;\n  out float v_CornerRadius;\n  out float v_StrokeAlignment;\n  out vec4 v_InnerShadowColor;\n  out vec4 v_InnerShadow;\n#else\n#endif\nout vec2 v_Radius;\n\n#ifdef USE_FILLIMAGE\n  out vec2 v_Uv;\n#endif\n\nvoid main() {\n  \n#ifdef USE_WIREFRAME\n  v_Barycentric = a_Barycentric;\n#endif\n\n\n  mat3 model;\n  vec3 position;\n  vec2 size;\n  vec4 fillColor;\n  vec4 strokeColor;\n  float zIndex;\n  float strokeWidth;\n  float strokeAlignment;\n  float shapeSizeAttenuation;\n\n  #ifdef USE_INSTANCES\n    model = mat3(a_Abcd.x, a_Abcd.y, 0, a_Abcd.z, a_Abcd.w, 0, a_Txty.x, a_Txty.y, 1);\n    position = a_Position.xyz;\n    size = a_Size.xy;\n    fillColor = a_FillColor;\n    strokeColor = a_StrokeColor;\n    zIndex = a_ZIndexStrokeWidth.x;\n    strokeWidth = a_ZIndexStrokeWidth.y;\n    strokeAlignment = a_ZIndexStrokeWidth.w;\n    shapeSizeAttenuation = a_Opacity.w;\n\n    v_FillColor = fillColor;\n    v_StrokeColor = strokeColor;\n    v_StrokeWidth = strokeWidth;\n    v_Opacity = a_Opacity;\n    v_CornerRadius = a_ZIndexStrokeWidth.z;\n    v_StrokeAlignment = a_ZIndexStrokeWidth.w;\n    v_InnerShadowColor = a_InnerShadowColor;\n    v_InnerShadow = a_InnerShadow;\n  #else\n    model = u_ModelMatrix;\n    position = u_Position.xyz;\n    size = u_Size.xy;\n    fillColor = u_FillColor;\n    strokeColor = u_StrokeColor;\n    zIndex = u_ZIndexStrokeWidth.x;\n    strokeWidth = u_ZIndexStrokeWidth.y;\n    strokeAlignment = u_ZIndexStrokeWidth.w;\n    shapeSizeAttenuation = u_Opacity.w;\n  #endif\n \n  float compressed = shapeSizeAttenuation;\n  float sizeAttenuation = floor(compressed * SHIFT_RIGHT23);\n  compressed -= sizeAttenuation * SHIFT_LEFT23;\n  float strokeAttenuation = floor(compressed * SHIFT_RIGHT22);\n\n  float scale = 1.0;\n  if (sizeAttenuation > 0.5) {\n    scale = 1.0 / u_ZoomScale;\n  }\n  if (strokeAttenuation > 0.5) {\n    strokeWidth = strokeWidth / u_ZoomScale;\n  }\n\n  float strokeOffset;\n  if (strokeAlignment < 0.5) {\n    strokeOffset = strokeWidth / 2.0;\n  } else if (strokeAlignment < 1.5) {\n    strokeOffset = 0.0;\n  } else if (strokeAlignment < 2.5) {\n    strokeOffset = strokeWidth;\n  }\n\n  vec2 radius = size + vec2(strokeOffset);\n  v_FragCoord = vec2(a_FragCoord * radius);\n  v_Radius = abs(radius);\n\n  #ifdef USE_FILLIMAGE\n    v_Uv = (a_FragCoord * radius / size + 1.0) / 2.0;\n  #endif\n\n  gl_Position = vec4((u_ProjectionMatrix \n    * u_ViewMatrix\n    * model \n    * vec3(position.xy + v_FragCoord * scale, 1)).xy, zIndex, 1);\n}\n";
export declare const frag = "\n#define SHIFT_RIGHT23 1.0 / 8388608.0\n#define SHIFT_LEFT23 8388608.0\n#define SHIFT_RIGHT22 1.0 / 4194304.0\n#define SHIFT_LEFT22 4194304.0\n\nlayout(std140) uniform SceneUniforms {\n  mat3 u_ProjectionMatrix;\n  mat3 u_ViewMatrix;\n  mat3 u_ViewProjectionInvMatrix;\n  vec4 u_BackgroundColor;\n  vec4 u_GridColor;\n  float u_ZoomScale;\n  float u_CheckboardStyle;\n};\n\n#ifdef USE_INSTANCES\n#else\n  layout(std140) uniform ShapeUniforms {\n    mat3 u_ModelMatrix;\n    vec4 u_Position;\n    vec4 u_Size;\n    vec4 u_FillColor;\n    vec4 u_StrokeColor;\n    vec4 u_ZIndexStrokeWidth;\n    vec4 u_Opacity;\n    vec4 u_InnerShadowColor;\n    vec4 u_InnerShadow;\n  };\n#endif\n\nout vec4 outputColor;\n\n\n#ifdef USE_WIREFRAME\n  in vec3 v_Barycentric;\n\n  float edgeFactor() {\n    float u_WireframeLineWidth = 1.0;\n    vec3 d = fwidth(v_Barycentric);\n    vec3 a3 = smoothstep(vec3(0.0), d * u_WireframeLineWidth, v_Barycentric);\n    return min(min(a3.x, a3.y), a3.z);\n  }\n#endif\n\nin vec2 v_FragCoord;\n\n#ifdef USE_INSTANCES\n  in vec4 v_FillColor;\n  in vec4 v_StrokeColor;\n  in float v_StrokeWidth;\n  in vec4 v_Opacity;\n  in float v_CornerRadius;\n  in float v_StrokeAlignment;\n  in vec4 v_InnerShadowColor;\n  in vec4 v_InnerShadow;\n#else\n#endif\nin vec2 v_Radius;\n\n#ifdef USE_FILLIMAGE\n  in vec2 v_Uv;\n  uniform sampler2D u_Texture;\n#endif\n\nfloat epsilon = 0.000001;\n\nfloat sdf_circle(vec2 p, float r) {\n  return length(p) - r;\n}\n\nfloat sdf_ellipse(vec2 p, vec2 r) {\n  float k0 = length(p / r);\n  float k1 = length(p / (r * r));\n  return k0 * (k0 - 1.0) / k1;\n\n  // V1\n  // float k1 = length(p/r);\n  // return (k1-1.0)*min(r.x,r.y);\n\n  // V3\n  // float k1 = length(p/r);\n  // return length(p)*(1.0-1.0/k1);\n}\n\nfloat sdf_rounded_box(vec2 p, vec2 b, float r) {\n  vec2 q = abs(p) - b + r;\n  return min(max(q.x, q.y), 0.0) + length(max(q, 0.0)) - r;\n}\n\nvec4 over(vec4 below, vec4 above) {\n  vec4 result;\n  float alpha = above.a + below.a * (1.0 - above.a);\n  result.rgb =\n      (above.rgb * above.a + below.rgb * below.a * (1.0 - above.a)) / alpha;\n  result.a = alpha;\n  return result;\n}\n\nfloat antialias(float distance) {\n  return clamp(distance / -fwidth(distance), 0.0, 1.0);\n}\n\nvec4 mix_border_inside(vec4 border, vec4 inside, float distance) {\n  // Blend the border on top of the background and then linearly interpolate\n  // between the two as we slide inside the background.\n  return mix(border, inside, clamp(1.0 - distance, 0.0, 1.0) * antialias(distance));\n}\n\nfloat sigmoid(float t) {\n  return 1.0 / (1.0 + exp(-t));\n}\n\nfloat make_shadow(vec2 pos, vec2 halfSize, float cornerRd, float blurRd, float distMul, float shape) {\n  float distance;\n  if (shape < 0.5) {\n    distance = sdf_circle(pos, halfSize.x);\n  } else if (shape < 1.5) {\n    distance = sdf_ellipse(pos, halfSize);\n  } else if (shape < 2.5) {\n    distance = sdf_rounded_box(pos, halfSize, cornerRd + blurRd);\n  }\n  float dist = sigmoid(distMul * distance / blurRd);\n  return clamp(dist, 0.0, 1.0);\n}\n\nvoid main() {\n  float strokeWidth;\n  vec4 fillColor;\n  vec4 strokeColor;\n  float opacity;\n  float fillOpacity;\n  float strokeOpacity;\n  float shapeSizeAttenuation;\n  float cornerRadius;\n  vec4 innerShadowColor;\n  vec4 innerShadow;\n  float strokeAlignment;\n  \n  #ifdef USE_INSTANCES\n    fillColor = v_FillColor;\n    strokeColor = v_StrokeColor;\n    strokeWidth = v_StrokeWidth;\n    opacity = v_Opacity.x;\n    fillOpacity = v_Opacity.y;\n    strokeOpacity = v_Opacity.z;\n    shapeSizeAttenuation = v_Opacity.w;\n    cornerRadius = v_CornerRadius;\n    strokeAlignment = v_StrokeAlignment;\n    innerShadowColor = v_InnerShadowColor;\n    innerShadow = v_InnerShadow;\n  #else\n    fillColor = u_FillColor;\n    strokeColor = u_StrokeColor;\n    strokeWidth = u_ZIndexStrokeWidth.y;\n    opacity = u_Opacity.x;\n    fillOpacity = u_Opacity.y;\n    strokeOpacity = u_Opacity.z;\n    shapeSizeAttenuation = u_Opacity.w;\n    cornerRadius = u_ZIndexStrokeWidth.z;\n    strokeAlignment = u_ZIndexStrokeWidth.w;\n    innerShadowColor = u_InnerShadowColor;\n    innerShadow = u_InnerShadow;\n  #endif\n\n  #ifdef USE_FILLIMAGE\n    fillColor = texture(SAMPLER_2D(u_Texture), v_Uv);\n  #endif\n\n  float compressed = shapeSizeAttenuation;\n  float sizeAttenuation = floor(compressed * SHIFT_RIGHT23);\n  compressed -= sizeAttenuation * SHIFT_LEFT23;\n  float strokeAttenuation = floor(compressed * SHIFT_RIGHT22);\n  compressed -= strokeAttenuation * SHIFT_LEFT22;\n  float shape = compressed;\n\n  if (strokeAttenuation > 0.5) {\n    strokeWidth = strokeWidth / u_ZoomScale;\n  }\n\n  float distance;\n  // 'circle', 'ellipse', 'rect'\n  if (shape < 0.5) {\n    distance = sdf_circle(v_FragCoord, v_Radius.x);\n  } else if (shape < 1.5) {\n    distance = sdf_ellipse(v_FragCoord, v_Radius);\n  } else if (shape < 2.5) {\n    distance = sdf_rounded_box(v_FragCoord, v_Radius, cornerRadius);\n    // TODO: Fast path when the quad is not rounded and doesn't have any border.\n  }\n\n  // based on the target alpha compositing mode.\n  fillColor.a *= fillOpacity;\n  strokeColor.a *= strokeOpacity;\n\n  vec4 color = fillColor;\n  float d1;\n  float d2;\n  if (strokeWidth > 0.0) {\n    if (strokeAlignment < 0.5) {\n      d1 = distance + strokeWidth;\n      d2 = distance + strokeWidth / 2.0;\n      color = mix_border_inside(over(fillColor, strokeColor), fillColor, d1);\n      color = mix_border_inside(strokeColor, color, d2);\n    } else if (strokeAlignment < 1.5) {\n      d1 = distance + strokeWidth;\n      d2 = distance;\n      color = mix_border_inside(over(fillColor, strokeColor), fillColor, d1);\n      color = mix_border_inside(strokeColor, color, d2);\n    } else if (strokeAlignment < 2.5) {\n      d2 = distance + strokeWidth;\n      color = mix_border_inside(strokeColor, color, d2);\n    }\n  }\n  outputColor = color;\n\n  float innerShadowBlurRadius = innerShadow.z / 2.0;\n  if (innerShadowBlurRadius > 0.0) {\n    vec2 shadowOffset = -innerShadow.xy;\n    float blurRadius = innerShadow.z;\n    float distMul = -1.0;\n    float lowerShadow = make_shadow(v_FragCoord + shadowOffset, v_Radius, cornerRadius, blurRadius, distMul, shape);\n\n    vec3 lowerShadowColor = innerShadowColor.rgb * innerShadowColor.a;\n    outputColor = over(vec4(color.xyz, 1.0), vec4(lowerShadowColor, 1.0 - lowerShadow));\n    outputColor = over(outputColor, vec4(color.xyz, clamp(distance, 0.0, 1.0)));\n  }\n\n  float antialiasedBlur = -fwidth(length(v_FragCoord));\n  float opacity_t = clamp(distance / antialiasedBlur, 0.0, 1.0);\n  outputColor.a *= clamp(1.0 - distance, 0.0, 1.0) * opacity * opacity_t;\n\n  \n#ifdef USE_WIREFRAME\n  vec3 u_WireframeLineColor = vec3(0.0, 0.0, 0.0);\n\n  outputColor.xyz = mix(outputColor.xyz, u_WireframeLineColor, (1.0 - edgeFactor()));\n  if (any(lessThan(v_Barycentric, vec3(0.01)))) {\n    outputColor.a = 0.95;\n  }\n#endif\n\n\n#ifdef USE_STENCIL\n  // Stencil pass: discard by geometry (SDF distance), not alpha. Include the same\n  // anti-alias band as the normal pass (fwidth(distance)) so the stencil boundary\n  // matches the visible shape and avoids edge holes.\n  float outerBoundary = (strokeAlignment < 1.5) ? 0.0 : strokeWidth;\n  if (distance > outerBoundary)\n    discard;\n#else\n  if (outputColor.a < epsilon)\n    discard;\n#endif\n\n#ifdef USE_SOFT_CLIP_OUTSIDE\n  outputColor *= 0.15;\n#endif\n}\n";