playcanvas/build/playcanvas/src/scene/shader-lib/glsl/chunks/gsplat/vert/gsplatSource.d.ts

Open-source WebGL/WebGPU 3D engine for the web

declare const _default: "\nattribute vec3 vertex_position;         // xy: cornerUV, z: render order offset within instance\n\nuniform uint numSplats;                 // total number of splats\nuniform highp usampler2D splatOrder;    // per-splat index to source gaussian\n\n// initialize the splat source structure and global splat\nbool initSource(out SplatSource source) {\n    // calculate splat order from instance index and vertex position offset\n    source.order = uint(gl_InstanceID) * {GSPLAT_INSTANCE_SIZE}u + uint(vertex_position.z);\n\n    // return if out of range (since the last block of splats may be partially full)\n    if (source.order >= numSplats) {\n        return false;\n    }\n\n    ivec2 orderUV = ivec2(source.order % splatTextureSize, source.order / splatTextureSize);\n\n    // read splat id and initialize global splat for format read functions\n    uint splatId = texelFetch(splatOrder, orderUV, 0).r;\n    setSplat(splatId);\n\n    // get the corner\n    source.cornerUV = vertex_position.xy;\n\n    return true;\n}\n";
export default _default;