vue-cesium-jyt

Version:
Vue 3.x components for CesiumJS.
39 lines (28 loc) • 1.16 kB
JavaScript
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const text = `
uniform sampler2D segmentsColorTexture;
uniform sampler2D segmentsDepthTexture;

uniform sampler2D currentTrailsColor;
uniform sampler2D trailsDepthTexture;

uniform float fadeOpacity;

varying vec2 textureCoordinate;

void main() {
  vec4 pointsColor = texture2D(segmentsColorTexture, textureCoordinate);
  vec4 trailsColor = texture2D(currentTrailsColor, textureCoordinate);

  trailsColor = floor(fadeOpacity * 255.0 * trailsColor) / 255.0; // make sure the trailsColor will be strictly decreased

  float pointsDepth = texture2D(segmentsDepthTexture, textureCoordinate).r;
  float trailsDepth = texture2D(trailsDepthTexture, textureCoordinate).r;
  float globeDepth = czm_unpackDepth(texture2D(czm_globeDepthTexture, textureCoordinate));

  gl_FragColor = vec4(0.0);
  if (pointsDepth < globeDepth) {
    gl_FragColor = gl_FragColor + pointsColor;
  }
  if (trailsDepth < globeDepth) {
    gl_FragColor = gl_FragColor + trailsColor;
  }
  gl_FragDepthEXT = min(pointsDepth, trailsDepth);
}
`;

exports["default"] = text;
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