kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
191 lines (187 loc) • 23.8 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.DeckDistanceFogEffect = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _engine = require("@luma.gl/engine");
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { (0, _defineProperty2["default"])(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; } // SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
var DISTANCE_FOG_UNIFORM_BLOCK = /* glsl */"uniform distanceFogUniforms {\n float density;\n float fogStart;\n float fogRange;\n float nearPlane;\n float farPlane;\n vec3 fogColor;\n} distanceFog;\n";
var DISTANCE_FOG_FS = /* glsl */"#version 300 es\nprecision highp float;\n\nuniform sampler2D texSrc;\nuniform sampler2D texDepth;\n\nin vec2 position;\nin vec2 coordinate;\nin vec2 uv;\n\nout vec4 fragColor;\n\nvoid main() {\n vec4 color = texture(texSrc, coordinate);\n float depth = texture(texDepth, coordinate).r;\n\n float n = distanceFog.nearPlane;\n float f = distanceFog.farPlane;\n float eyeZ = n * f / (f - depth * (f - n));\n float linearDepth = (eyeZ - n) / (f - n);\n\n vec3 fogColor = distanceFog.fogColor / 255.0;\n float end = distanceFog.fogStart + distanceFog.fogRange;\n float fogFactor = smoothstep(distanceFog.fogStart, end, linearDepth) * distanceFog.density;\n\n fragColor = vec4(mix(color.rgb, fogColor, fogFactor), color.a);\n}\n";
var screenModule = {
name: 'screen',
fs: /* glsl */"uniform screenUniforms {\n vec2 texSize;\n} screen;\n",
uniformTypes: {
texSize: 'vec2<f32>'
}
};
var distanceFogModule = {
name: 'distanceFog',
fs: DISTANCE_FOG_UNIFORM_BLOCK,
uniformTypes: {
density: 'f32',
fogStart: 'f32',
fogRange: 'f32',
nearPlane: 'f32',
farPlane: 'f32',
fogColor: 'vec3<f32>'
},
defaultUniforms: {
density: 0.5,
fogStart: 0.3,
fogRange: 0.5,
nearPlane: 0.1,
farPlane: 1000,
fogColor: [217, 222, 230]
},
propTypes: {
density: {
value: 0.5,
min: 0,
max: 1
},
fogStart: {
value: 0.3,
min: 0,
max: 1
},
fogRange: {
value: 0.5,
min: 0.01,
max: 1
},
fogColor: {
value: [217, 222, 230]
},
nearPlane: {
value: 0.1,
"private": true
},
farPlane: {
value: 1000,
"private": true
}
}
};
/**
* Distance Fog Effect - uses the depth buffer to apply fog based on
* camera-to-fragment distance. The raw depth buffer values are linearized
* using the camera's near/far planes (extracted from the viewport projection
* matrix) so that the fog gradient is perceptually uniform with distance.
*/
var DeckDistanceFogEffect = exports.DeckDistanceFogEffect = /*#__PURE__*/function () {
function DeckDistanceFogEffect() {
var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
(0, _classCallCheck2["default"])(this, DeckDistanceFogEffect);
(0, _defineProperty2["default"])(this, "id", 'distance-fog-effect');
(0, _defineProperty2["default"])(this, "props", void 0);
(0, _defineProperty2["default"])(this, "module", distanceFogModule);
(0, _defineProperty2["default"])(this, "model", null);
this.props = _objectSpread({
density: 0.5,
fogStart: 0.3,
fogRange: 0.5,
fogColor: [217, 222, 230]
}, props);
}
return (0, _createClass2["default"])(DeckDistanceFogEffect, [{
key: "setup",
value: function setup(_ref) {
var device = _ref.device;
this.model = new _engine.ClipSpace(device, {
id: 'distance-fog-pass',
fs: DISTANCE_FOG_FS,
modules: [distanceFogModule, screenModule],
parameters: {
depthWriteEnabled: false,
depthCompare: 'always',
blend: true,
blendColorSrcFactor: 'one',
blendColorDstFactor: 'one-minus-src-alpha',
blendAlphaSrcFactor: 'one',
blendAlphaDstFactor: 'one-minus-src-alpha',
blendColorOperation: 'add',
blendAlphaOperation: 'add'
}
});
}
}, {
key: "setProps",
value: function setProps(props) {
Object.assign(this.props, props);
}
// eslint-disable-next-line @typescript-eslint/no-empty-function
}, {
key: "preRender",
value: function preRender() {}
}, {
key: "postRender",
value: function postRender(params) {
var _params$viewports;
var inputBuffer = params.inputBuffer,
swapBuffer = params.swapBuffer,
target = params.target;
var outputBuffer = target !== undefined ? target : swapBuffer;
if (!this.model) return inputBuffer;
// Distance fog always runs first among post-processing effects
// (enforced by fixEffectOrder), so inputBuffer is always the scene
// render target with valid depth data.
var depthAttachment = inputBuffer.depthStencilAttachment;
if (!depthAttachment) return inputBuffer;
var nearPlane = 0.1;
var farPlane = 1000;
if (((_params$viewports = params.viewports) === null || _params$viewports === void 0 ? void 0 : _params$viewports.length) > 0) {
var pm = params.viewports[0].projectionMatrix;
if (pm) {
var n = pm[14] / (pm[10] - 1);
var f = pm[14] / (pm[10] + 1);
if (Number.isFinite(n) && Number.isFinite(f) && n > 0 && f > n) {
nearPlane = n;
farPlane = f;
}
}
}
var texSize = [inputBuffer.width, inputBuffer.height];
this.model.shaderInputs.setProps({
screen: {
texSrc: inputBuffer.colorAttachments[0],
texSize: texSize
},
distanceFog: {
texDepth: depthAttachment,
density: this.props.density,
fogStart: this.props.fogStart,
fogRange: this.props.fogRange,
nearPlane: nearPlane,
farPlane: farPlane,
fogColor: this.props.fogColor
}
});
var renderPass = this.model.device.beginRenderPass({
framebuffer: outputBuffer,
parameters: {
viewport: [0, 0].concat(texSize)
},
clearColor: [0, 0, 0, 0],
clearDepth: 1
});
this.model.draw(renderPass);
renderPass.end();
return outputBuffer || inputBuffer;
}
}, {
key: "cleanup",
value: function cleanup() {
if (this.model) {
this.model.destroy();
this.model = null;
}
}
}]);
}();
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["_engine","require","ownKeys","e","r","t","Object","keys","getOwnPropertySymbols","o","filter","getOwnPropertyDescriptor","enumerable","push","apply","_objectSpread","arguments","length","forEach","_defineProperty2","getOwnPropertyDescriptors","defineProperties","defineProperty","DISTANCE_FOG_UNIFORM_BLOCK","DISTANCE_FOG_FS","screenModule","name","fs","uniformTypes","texSize","distanceFogModule","density","fogStart","fogRange","nearPlane","farPlane","fogColor","defaultUniforms","propTypes","value","min","max","DeckDistanceFogEffect","exports","props","undefined","_classCallCheck2","_createClass2","key","setup","_ref","device","model","ClipSpace","id","modules","parameters","depthWriteEnabled","depthCompare","blend","blendColorSrcFactor","blendColorDstFactor","blendAlphaSrcFactor","blendAlphaDstFactor","blendColorOperation","blendAlphaOperation","setProps","assign","preRender","postRender","params","_params$viewports","inputBuffer","swapBuffer","target","outputBuffer","depthAttachment","depthStencilAttachment","viewports","pm","projectionMatrix","n","f","Number","isFinite","width","height","shaderInputs","screen","texSrc","colorAttachments","distanceFog","texDepth","renderPass","beginRenderPass","framebuffer","viewport","concat","clearColor","clearDepth","draw","end","cleanup","destroy"],"sources":["../../src/shader-passes/distance-fog.ts"],"sourcesContent":["// SPDX-License-Identifier: MIT\n// Copyright contributors to the kepler.gl project\n\nimport {ClipSpace} from '@luma.gl/engine';\nimport type {ShaderModule} from '@luma.gl/shadertools';\n\nexport type DistanceFogProps = {\n  density: number;\n  fogStart: number;\n  fogRange: number;\n  fogColor: [number, number, number];\n};\n\nconst DISTANCE_FOG_UNIFORM_BLOCK = /* glsl */ `\\\nuniform distanceFogUniforms {\n  float density;\n  float fogStart;\n  float fogRange;\n  float nearPlane;\n  float farPlane;\n  vec3 fogColor;\n} distanceFog;\n`;\n\nconst DISTANCE_FOG_FS = /* glsl */ `\\\n#version 300 es\nprecision highp float;\n\nuniform sampler2D texSrc;\nuniform sampler2D texDepth;\n\nin vec2 position;\nin vec2 coordinate;\nin vec2 uv;\n\nout vec4 fragColor;\n\nvoid main() {\n  vec4 color = texture(texSrc, coordinate);\n  float depth = texture(texDepth, coordinate).r;\n\n  float n = distanceFog.nearPlane;\n  float f = distanceFog.farPlane;\n  float eyeZ = n * f / (f - depth * (f - n));\n  float linearDepth = (eyeZ - n) / (f - n);\n\n  vec3 fogColor = distanceFog.fogColor / 255.0;\n  float end = distanceFog.fogStart + distanceFog.fogRange;\n  float fogFactor = smoothstep(distanceFog.fogStart, end, linearDepth) * distanceFog.density;\n\n  fragColor = vec4(mix(color.rgb, fogColor, fogFactor), color.a);\n}\n`;\n\nconst screenModule = {\n  name: 'screen',\n  fs: /* glsl */ `\\\nuniform screenUniforms {\n  vec2 texSize;\n} screen;\n`,\n  uniformTypes: {\n    texSize: 'vec2<f32>'\n  }\n} as const satisfies ShaderModule;\n\nconst distanceFogModule = {\n  name: 'distanceFog',\n  fs: DISTANCE_FOG_UNIFORM_BLOCK,\n  uniformTypes: {\n    density: 'f32',\n    fogStart: 'f32',\n    fogRange: 'f32',\n    nearPlane: 'f32',\n    farPlane: 'f32',\n    fogColor: 'vec3<f32>'\n  },\n  defaultUniforms: {\n    density: 0.5,\n    fogStart: 0.3,\n    fogRange: 0.5,\n    nearPlane: 0.1,\n    farPlane: 1000,\n    fogColor: [217, 222, 230]\n  },\n  propTypes: {\n    density: {value: 0.5, min: 0, max: 1},\n    fogStart: {value: 0.3, min: 0, max: 1},\n    fogRange: {value: 0.5, min: 0.01, max: 1},\n    fogColor: {value: [217, 222, 230]},\n    nearPlane: {value: 0.1, private: true},\n    farPlane: {value: 1000, private: true}\n  }\n} as const satisfies ShaderModule;\n\n/**\n * Distance Fog Effect - uses the depth buffer to apply fog based on\n * camera-to-fragment distance. The raw depth buffer values are linearized\n * using the camera's near/far planes (extracted from the viewport projection\n * matrix) so that the fog gradient is perceptually uniform with distance.\n */\nexport class DeckDistanceFogEffect {\n  id = 'distance-fog-effect';\n  props: DistanceFogProps;\n  module = distanceFogModule;\n  private model: InstanceType<typeof ClipSpace> | null = null;\n\n  constructor(props: Partial<DistanceFogProps> = {}) {\n    this.props = {\n      density: 0.5,\n      fogStart: 0.3,\n      fogRange: 0.5,\n      fogColor: [217, 222, 230],\n      ...props\n    };\n  }\n\n  setup({device}) {\n    this.model = new ClipSpace(device, {\n      id: 'distance-fog-pass',\n      fs: DISTANCE_FOG_FS,\n      modules: [distanceFogModule, screenModule],\n      parameters: {\n        depthWriteEnabled: false,\n        depthCompare: 'always' as const,\n        blend: true,\n        blendColorSrcFactor: 'one' as const,\n        blendColorDstFactor: 'one-minus-src-alpha' as const,\n        blendAlphaSrcFactor: 'one' as const,\n        blendAlphaDstFactor: 'one-minus-src-alpha' as const,\n        blendColorOperation: 'add' as const,\n        blendAlphaOperation: 'add' as const\n      }\n    });\n  }\n\n  setProps(props: Partial<DistanceFogProps>) {\n    Object.assign(this.props, props);\n  }\n\n  // eslint-disable-next-line @typescript-eslint/no-empty-function\n  preRender(): void {}\n\n  postRender(params: any): any {\n    const {inputBuffer, swapBuffer, target} = params;\n    const outputBuffer = target !== undefined ? target : swapBuffer;\n\n    if (!this.model) return inputBuffer;\n\n    // Distance fog always runs first among post-processing effects\n    // (enforced by fixEffectOrder), so inputBuffer is always the scene\n    // render target with valid depth data.\n    const depthAttachment = inputBuffer.depthStencilAttachment;\n    if (!depthAttachment) return inputBuffer;\n\n    let nearPlane = 0.1;\n    let farPlane = 1000;\n    if (params.viewports?.length > 0) {\n      const pm = params.viewports[0].projectionMatrix;\n      if (pm) {\n        const n = pm[14] / (pm[10] - 1);\n        const f = pm[14] / (pm[10] + 1);\n        if (Number.isFinite(n) && Number.isFinite(f) && n > 0 && f > n) {\n          nearPlane = n;\n          farPlane = f;\n        }\n      }\n    }\n\n    const texSize: [number, number] = [inputBuffer.width, inputBuffer.height];\n\n    this.model.shaderInputs.setProps({\n      screen: {\n        texSrc: inputBuffer.colorAttachments[0],\n        texSize\n      },\n      distanceFog: {\n        texDepth: depthAttachment,\n        density: this.props.density,\n        fogStart: this.props.fogStart,\n        fogRange: this.props.fogRange,\n        nearPlane,\n        farPlane,\n        fogColor: this.props.fogColor\n      }\n    });\n\n    const renderPass = this.model.device.beginRenderPass({\n      framebuffer: outputBuffer,\n      parameters: {viewport: [0, 0, ...texSize]},\n      clearColor: [0, 0, 0, 0],\n      clearDepth: 1\n    });\n    this.model.draw(renderPass);\n    renderPass.end();\n\n    return outputBuffer || inputBuffer;\n  }\n\n  cleanup(): void {\n    if (this.model) {\n      this.model.destroy();\n      this.model = null;\n    }\n  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