export default "@export clay.particle.vertex\nuniform mat4 worldView : WORLDVIEW;\nuniform mat4 projection : PROJECTION;\nattribute vec3 position : POSITION;\nattribute vec3 normal : NORMAL;\n#ifdef UV_ANIMATION\nattribute vec2 texcoord0 : TEXCOORD_0;\nattribute vec2 texcoord1 : TEXCOORD_1;\nvarying vec2 v_Uv0;\nvarying vec2 v_Uv1;\n#endif\nvarying float v_Age;\nvoid main() {\n v_Age = normal.x;\n float rotation = normal.y;\n vec4 worldViewPosition = worldView * vec4(position, 1.0);\n gl_Position = projection * worldViewPosition;\n float w = gl_Position.w;\n gl_PointSize = normal.z * projection[0].x / w;\n #ifdef UV_ANIMATION\n v_Uv0 = texcoord0;\n v_Uv1 = texcoord1;\n #endif\n}\n@end\n@export clay.particle.fragment\nuniform sampler2D sprite;\nuniform sampler2D gradient;\nuniform vec3 color : [1.0, 1.0, 1.0];\nuniform float alpha : 1.0;\nvarying float v_Age;\n#ifdef UV_ANIMATION\nvarying vec2 v_Uv0;\nvarying vec2 v_Uv1;\n#endif\nvoid main() {\n vec4 color = vec4(color, alpha);\n #ifdef SPRITE_ENABLED\n #ifdef UV_ANIMATION\n color *= texture2D(sprite, mix(v_Uv0, v_Uv1, gl_PointCoord));\n #else\n color *= texture2D(sprite, gl_PointCoord);\n #endif\n #endif\n #ifdef GRADIENT_ENABLED\n color *= texture2D(gradient, vec2(v_Age, 0.5));\n #endif\n gl_FragColor = color;\n}\n@end";
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