export declare const RECT_VERT = "#version 300 es\nprecision highp float;\n\n// Per-vertex: unit quad (0,0)\u2192(1,1)\nlayout(location = 0) in vec2 a_position;\n\n// Per-instance\nlayout(location = 1) in vec4 a_rect;   // x, y, w, h (CSS pixels)\nlayout(location = 2) in vec4 a_color;  // r, g, b, a (0\u20131)\n\nuniform vec2 u_resolution;             // viewport size in CSS pixels\n\nout vec4 v_color;\n\nvoid main() {\n  vec2 pos = a_rect.xy + a_position * a_rect.zw;\n  // Convert CSS pixels \u2192 clip space: [0, width] \u2192 [-1, 1]\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y; // flip Y (canvas convention: top=0)\n  gl_Position = vec4(clip, 0.0, 1.0);\n  v_color = a_color;\n}\n";
export declare const RECT_FRAG = "#version 300 es\nprecision highp float;\n\nin vec4 v_color;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = v_color;\n}\n";
export declare const LINE_VERT = "#version 300 es\nprecision highp float;\n\n// Per-instance: line segment\nlayout(location = 0) in vec2 a_p0;      // start point (CSS px)\nlayout(location = 1) in vec2 a_p1;      // end point (CSS px)\nlayout(location = 2) in float a_width;  // line width (CSS px)\nlayout(location = 3) in vec4 a_color;   // rgba (0\u20131)\nlayout(location = 4) in float a_vertex; // vertex index 0\u20133 (quad corners)\n\nuniform vec2 u_resolution;\n\nout vec4 v_color;\n\nvoid main() {\n  vec2 dir = a_p1 - a_p0;\n  float len = length(dir);\n  vec2 norm = len > 0.001 ? vec2(-dir.y, dir.x) / len : vec2(0.0, 1.0);\n  float hw = a_width * 0.5;\n\n  // Quad corners: 0=p0-n, 1=p0+n, 2=p1-n, 3=p1+n\n  int vi = int(a_vertex);\n  vec2 base = (vi < 2) ? a_p0 : a_p1;\n  float side = (vi == 0 || vi == 2) ? -1.0 : 1.0;\n  vec2 pos = base + norm * hw * side;\n\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y;\n  gl_Position = vec4(clip, 0.0, 1.0);\n  v_color = a_color;\n}\n";
export declare const LINE_FRAG = "#version 300 es\nprecision highp float;\n\nin vec4 v_color;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = v_color;\n}\n";
export declare const TEXT_VERT = "#version 300 es\nprecision highp float;\n\nlayout(location = 0) in vec2 a_position; // unit quad vertex\nlayout(location = 1) in vec4 a_rect;     // screen rect: x, y, w, h\nlayout(location = 2) in vec4 a_uv;       // texture rect: u0, v0, u1, v1\n\nuniform vec2 u_resolution;\n\nout vec2 v_uv;\n\nvoid main() {\n  vec2 pos = a_rect.xy + a_position * a_rect.zw;\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y;\n  gl_Position = vec4(clip, 0.0, 1.0);\n\n  // Interpolate UV\n  v_uv = mix(a_uv.xy, a_uv.zw, a_position);\n}\n";
export declare const TEXT_FRAG = "#version 300 es\nprecision highp float;\n\nuniform sampler2D u_texture;\n\nin vec2 v_uv;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = texture(u_texture, v_uv);\n}\n";
export declare const CANDLE_VERT = "#version 300 es\nprecision highp float;\n\n// Per-instance: raw OHLC data\nlayout(location = 0) in float a_open;\nlayout(location = 1) in float a_high;\nlayout(location = 2) in float a_low;\nlayout(location = 3) in float a_close;\nlayout(location = 4) in float a_barIndex; // relative bar index (float)\n\n// Uniforms\nuniform vec2 u_resolution;    // viewport CSS pixels\nuniform float u_chartHeight;  // chart area height\nuniform float u_priceMin;     // visible price range min\nuniform float u_priceRange;   // max - min\nuniform float u_barSpacing;   // pixels per bar\nuniform float u_offsetX;      // scroll offset\nuniform float u_bodyWidth;    // candle body width (pixels)\nuniform vec4 u_bullColor;     // bull body RGBA\nuniform vec4 u_bearColor;     // bear body RGBA\nuniform vec4 u_bullWickColor; // bull wick RGBA\nuniform vec4 u_bearWickColor; // bear wick RGBA\n\nout vec4 v_color;\n\n// 12 vertices per candle:\n//  0-5:  body quad (two triangles)\n//  6-11: wick quad (two triangles, 1px wide)\n\nfloat priceToY(float price) {\n  return u_chartHeight * (1.0 - (price - u_priceMin) / u_priceRange);\n}\n\nvoid main() {\n  int vid = gl_VertexID % 12;\n  bool isWick = vid >= 6;\n  int quadVid = isWick ? vid - 6 : vid;\n\n  float centerX = a_barIndex * u_barSpacing + u_offsetX + u_barSpacing * 0.5;\n\n  bool isBull = a_close >= a_open;\n  float bodyTop = priceToY(isBull ? a_close : a_open);\n  float bodyBot = priceToY(isBull ? a_open : a_close);\n  // Ensure min 1px body\n  if (bodyBot - bodyTop < 1.0) bodyBot = bodyTop + 1.0;\n\n  float highY = priceToY(a_high);\n  float lowY  = priceToY(a_low);\n\n  float hw = isWick ? 0.5 : u_bodyWidth * 0.5;\n  float top = isWick ? highY : bodyTop;\n  float bot = isWick ? lowY : bodyBot;\n\n  // Quad: 6 verts (2 tris) \u2014 TL, TR, BL, TR, BR, BL\n  vec2 pos;\n  float left = floor(centerX - hw + 0.5);\n  float right = left + (isWick ? 1.0 : u_bodyWidth);\n  float topy = top;\n  float boty = bot;\n\n  if (quadVid == 0)      pos = vec2(left,  topy);  // TL\n  else if (quadVid == 1) pos = vec2(right, topy);  // TR\n  else if (quadVid == 2) pos = vec2(left,  boty);  // BL\n  else if (quadVid == 3) pos = vec2(right, topy);  // TR\n  else if (quadVid == 4) pos = vec2(right, boty);  // BR\n  else                   pos = vec2(left,  boty);  // BL\n\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y;\n  gl_Position = vec4(clip, 0.0, 1.0);\n\n  if (isWick) {\n    v_color = isBull ? u_bullWickColor : u_bearWickColor;\n  } else {\n    v_color = isBull ? u_bullColor : u_bearColor;\n  }\n}\n";
export declare const CANDLE_FRAG = "#version 300 es\nprecision highp float;\n\nin vec4 v_color;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = v_color;\n}\n";
export declare const VOLUME_VERT = "#version 300 es\nprecision highp float;\n\nlayout(location = 0) in float a_volume;\nlayout(location = 1) in float a_isBull;   // 1.0 = bull, 0.0 = bear\nlayout(location = 2) in float a_barIndex;\n\nuniform vec2 u_resolution;\nuniform float u_chartHeight;\nuniform float u_maxVolume;\nuniform float u_barSpacing;\nuniform float u_offsetX;\nuniform float u_bodyWidth;\nuniform float u_volumeZoneHeight;\nuniform vec4 u_bullColor;\nuniform vec4 u_bearColor;\n\nout vec4 v_color;\n\nvoid main() {\n  int vid = gl_VertexID % 6;\n\n  float centerX = a_barIndex * u_barSpacing + u_offsetX + u_barSpacing * 0.5;\n  float hw = u_bodyWidth * 0.5;\n  float left = floor(centerX - hw + 0.5);\n  float right = left + u_bodyWidth;\n\n  float barH = (a_volume / u_maxVolume) * u_volumeZoneHeight;\n  float top = u_chartHeight - barH;\n  float bot = u_chartHeight;\n\n  vec2 pos;\n  if (vid == 0)      pos = vec2(left,  top);\n  else if (vid == 1) pos = vec2(right, top);\n  else if (vid == 2) pos = vec2(left,  bot);\n  else if (vid == 3) pos = vec2(right, top);\n  else if (vid == 4) pos = vec2(right, bot);\n  else               pos = vec2(left,  bot);\n\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y;\n  gl_Position = vec4(clip, 0.0, 1.0);\n\n  v_color = a_isBull > 0.5 ? u_bullColor : u_bearColor;\n}\n";
export declare const VOLUME_FRAG = "#version 300 es\nprecision highp float;\n\nin vec4 v_color;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = v_color;\n}\n";
export declare const GRADIENT_RECT_VERT = "#version 300 es\nprecision highp float;\n\nlayout(location = 0) in vec2 a_position;   // unit quad\nlayout(location = 1) in vec4 a_rect;       // x, y, w, h\nlayout(location = 2) in vec4 a_colorTop;   // top color\nlayout(location = 3) in vec4 a_colorBot;   // bottom color\n\nuniform vec2 u_resolution;\n\nout vec4 v_color;\n\nvoid main() {\n  vec2 pos = a_rect.xy + a_position * a_rect.zw;\n  vec2 clip = (pos / u_resolution) * 2.0 - 1.0;\n  clip.y = -clip.y;\n  gl_Position = vec4(clip, 0.0, 1.0);\n  v_color = mix(a_colorTop, a_colorBot, a_position.y);\n}\n";
export declare const GRADIENT_RECT_FRAG = "#version 300 es\nprecision highp float;\n\nin vec4 v_color;\nout vec4 fragColor;\n\nvoid main() {\n  fragColor = v_color;\n}\n";