/**
 * Denoise -
 * Smooths over grainy noise in dark images using an 9x9 box filter
 * weighted by color intensity, similar to a bilateral filter.
 */
export type DenoiseProps = {
    /**
     * The exponent of the color intensity difference, should be greater
     * than zero. A value of zero just gives an 9x9 box blur and high values
     * give the original image, but ideal values are usually around 10-20.
     */
    strength?: number;
};
export type DenoiseUniforms = DenoiseProps;
/**
 * Denoise -
 * Smooths over grainy noise in dark images using an 9x9 box filter
 * weighted by color intensity, similar to a bilateral filter.
 */
export declare const denoise: {
    readonly props: DenoiseProps;
    readonly uniforms: DenoiseUniforms;
    readonly name: "denoise";
    readonly uniformTypes: {
        readonly strength: "f32";
    };
    readonly propTypes: {
        readonly strength: {
            readonly format: "f32";
            readonly value: 0.5;
            readonly min: 0;
            readonly max: 1;
        };
    };
    readonly source: "struct denoiseUniforms {\n  strength: f32,\n};\n\n@group(0) @binding(auto) var<uniform> denoise: denoiseUniforms;\n\nfn denoise_sampleColor(\n  sourceTexture: texture_2d<f32>,\n  sourceTextureSampler: sampler,\n  texSize: vec2f,\n  texCoord: vec2f\n) -> vec4f {\n  let adjustedExponent = 3.0 + 200.0 * pow(1.0 - denoise.strength, 4.0);\n  let center = textureSample(sourceTexture, sourceTextureSampler, texCoord);\n  var color = vec4f(0.0);\n  var total = 0.0;\n\n  for (var x = -4.0; x <= 4.0; x += 1.0) {\n    for (var y = -4.0; y <= 4.0; y += 1.0) {\n      let offsetColor = textureSample(\n        sourceTexture,\n        sourceTextureSampler,\n        texCoord + vec2f(x, y) / texSize\n      );\n      let weight = pow(\n        1.0 - abs(dot(offsetColor.rgb - center.rgb, vec3f(0.25))),\n        adjustedExponent\n      );\n      color += offsetColor * weight;\n      total += weight;\n    }\n  }\n\n  return color / total;\n}\n";
    readonly fs: "layout(std140) uniform denoiseUniforms {\n  float strength;\n} denoise;\n\nvec4 denoise_sampleColor(sampler2D source, vec2 texSize, vec2 texCoord) {\n  float adjustedExponent = 3. + 200. * pow(1. - denoise.strength, 4.);\n\n  vec4 center = texture(source, texCoord);\n  vec4 color = vec4(0.0);\n  float total = 0.0;\n  for (float x = -4.0; x <= 4.0; x += 1.0) {\n    for (float y = -4.0; y <= 4.0; y += 1.0) {\n      vec4 offsetColor = texture(source, texCoord + vec2(x, y) / texSize);\n      float weight = 1.0 - abs(dot(offsetColor.rgb - center.rgb, vec3(0.25)));\n      weight = pow(weight, adjustedExponent);\n      color += offsetColor * weight;\n      total += weight;\n    }\n  }\n\n  return color / total;\n}\n";
    readonly passes: [{
        readonly sampler: true;
    }, {
        readonly sampler: true;
    }];
};
//# sourceMappingURL=denoise.d.ts.map