Variable localParticleVertShader
localParticleVertShader: "\n// Per-vertex attributes\nattribute vec3 position;\nattribute vec2 uv;\n\n// Per-instance attributes\nattribute vec3 offset;\nattribute vec4 color;\nattribute vec3 size;\nattribute vec4 rotation;\nattribute float uvTile;\n\n// Uniforms\nuniform mat4 worldViewProjection;\n\n#ifdef UV_TILE\nuniform float tileCountX;\nuniform float tileCountY;\n#endif\n\n// Varyings\nvarying vec2 vUV;\nvarying vec4 vColor;\n\nvec3 applyQuaternion(vec3 v, vec4 q) {\n vec3 qVec = q.xyz;\n float qW = q.w;\n vec3 t = 2.0 * cross(qVec, v);\n return v + qW * t + cross(qVec, t);\n}\n\nvoid main() {\n vec3 rotatedPosition = applyQuaternion(position * size, rotation);\n vec3 worldPos = rotatedPosition + offset;\n\n gl_Position = worldViewProjection * vec4(worldPos, 1.0);\n\n #ifdef UV_TILE\n vec2 tc = vec2(tileCountX, tileCountY);\n float baseTile = floor(uvTile);\n float tileU = mod(baseTile, tc.x) / tc.x;\n float tileV = 1.0 - floor(baseTile / tc.x) / tc.y - 1.0 / tc.y;\n vUV = uv / tc + vec2(tileU, tileV);\n #else\n vUV = uv;\n #endif\n\n vColor = color;\n}\n"