58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
import { vec2 } from 'gl-matrix';
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import { LightDrawable } from '../../../drawables/lights/light-drawable';
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import { clamp01 } from '../../../helper/clamp';
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import { Insights } from '../insights';
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import { RenderPass } from './render-pass';
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export class LightsRenderPass extends RenderPass {
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public lightCutoffDistance = 400;
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private drawables: Array<LightDrawable> = [];
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public addDrawable(drawable: LightDrawable) {
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this.drawables.push(drawable);
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}
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public render(commonUniforms: any, inputTexture?: WebGLTexture) {
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this.frame.bindAndClear(inputTexture);
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const tileCenterWorldCoordinates = vec2.transformMat2d(
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vec2.create(),
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vec2.fromValues(0.5, 0.5),
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commonUniforms.uvToWorld
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);
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const drawablesNearTile = this.drawables.filter((l) => {
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const d = vec2.subtract(
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vec2.create(),
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[
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Math.abs(l.center.x - tileCenterWorldCoordinates.x),
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Math.abs(l.center.y - tileCenterWorldCoordinates.y),
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],
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vec2.scale(vec2.create(), commonUniforms.worldAreaInView, 0.5)
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);
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const distance =
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vec2.length([Math.max(d.x, 0), Math.max(d.y, 0)]) +
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Math.min(Math.max(d.x, d.y), 0.0);
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l.setLightnessRatio(clamp01(1 - distance / this.lightCutoffDistance));
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return distance < this.lightCutoffDistance;
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});
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drawablesNearTile.forEach((p) =>
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p.serializeToUniforms(
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commonUniforms,
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commonUniforms.transformWorldToNDC,
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commonUniforms.scaleWorldLengthToNDC
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)
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);
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this.program.draw(commonUniforms);
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Insights.setValue(
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['render pass', 'lights', 'rendered drawables'],
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drawablesNearTile.length
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);
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this.drawables = [];
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}
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}
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