@cesium/engine/Source/Shaders/PrimitiveGaussianSplatFS.js

CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.

//This file is automatically rebuilt by the Cesium build process.
export default "//\n\
// Fragment shader for Gaussian splats.\n\
// Renders a Gaussian splat within a quad, discarding fragments outside the unit circle.\n\
// Applies an approximate Gaussian falloff based on distance from the center and outputs\n\
// a color modulated by the alpha and Gaussian weight.\n\
//\n\
void main() {\n\
    if (v_splitDirection < 0.0 && gl_FragCoord.x > czm_splitPosition) discard;\n\
    if (v_splitDirection > 0.0 && gl_FragCoord.x < czm_splitPosition) discard;\n\
\n\
    mediump float A = dot(v_vertPos, v_vertPos);\n\
    if(A > 1.0) {\n\
        discard;\n\
    }\n\
    mediump float scale = 4.0;\n\
    mediump float B = exp(-A * scale) * (v_splatColor.a);\n\
    out_FragColor = vec4(v_splatColor.rgb * B, B);\n\
}\n\
";