/**
 * Heatmap Shader - WGSL for WebGPU
 *
 * Renders heatmap cells with colormap texture lookup.
 * Each vertex has position (x, y) and value (z) for color mapping.
 */
export declare const HEATMAP_SHADER_WGSL = "\n// Uniform buffer for transforms and value range\nstruct Uniforms {\n  scale: vec2<f32>,\n  translate: vec2<f32>,\n  minValue: f32,\n  maxValue: f32,\n  _padding: vec2<f32>,\n};\n\n@group(0) @binding(0)\nvar<uniform> uniforms: Uniforms;\n\n@group(0) @binding(1)\nvar colormapSampler: sampler;\n\n@group(0) @binding(2)\nvar colormapTexture: texture_1d<f32>;\n\nstruct VSInput {\n  @location(0) position: vec2<f32>,\n  @location(1) value: f32,\n};\n\nstruct VSOutput {\n  @builtin(position) pos: vec4<f32>,\n  @location(0) value: f32,\n};\n\n@vertex\nfn vs_main(in: VSInput) -> VSOutput {\n  var out: VSOutput;\n  let transformed = in.position * uniforms.scale + uniforms.translate;\n  out.pos = vec4<f32>(transformed, 0.0, 1.0);\n  out.value = in.value;\n  return out;\n}\n\n@fragment\nfn fs_main(in: VSOutput) -> @location(0) vec4<f32> {\n  let range = uniforms.maxValue - uniforms.minValue;\n  var t: f32;\n  if (range != 0.0) {\n    t = (in.value - uniforms.minValue) / range;\n  } else {\n    t = 0.0;\n  }\n  t = clamp(t, 0.0, 1.0);\n  \n  return textureSample(colormapTexture, colormapSampler, t);\n}\n";
export declare const HEATMAP_VERTEX_STRIDE: number;