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"global": "float shape_circle(vec2 uv, float sides, float size, float edge) {\n uv = 2.0*uv-1.0;\n\tedge = max(edge, 1.0e-8);\n float distance = length(uv);\n return clamp((1.0-distance/size)/edge, 0.0, 1.0);\n}\n\nfloat shape_polygon(vec2 uv, float sides, float size, float edge) {\n uv = 2.0*uv-1.0;\n\tedge = max(edge, 1.0e-8);\n float angle = atan(uv.x, uv.y)+3.14159265359;\n float slice = 6.28318530718/sides;\n return clamp((size-cos(floor(0.5+angle/slice)*slice-angle)*length(uv))/(edge*size), 0.0, 1.0);\n}\n\nfloat shape_star(vec2 uv, float sides, float size, float edge) {\n uv = 2.0*uv-1.0;\n\tedge = max(edge, 1.0e-8);\n float angle = atan(uv.x, uv.y);\n float slice = 6.28318530718/sides;\n return clamp((size-cos(floor(1.5+angle/slice-2.0*step(0.5*slice, mod(angle, slice)))*slice-angle)*length(uv))/(edge*size), 0.0, 1.0);\n}\n\nfloat shape_curved_star(vec2 uv, float sides, float size, float edge) {\n uv = 2.0*uv-1.0;\n\tedge = max(edge, 1.0e-8);\n float angle = 2.0*(atan(uv.x, uv.y)+3.14159265359);\n float slice = 6.28318530718/sides;\n return clamp((size-cos(floor(0.5+0.5*angle/slice)*2.0*slice-angle)*length(uv))/(edge*size), 0.0, 1.0);\n}\n\nfloat shape_rays(vec2 uv, float sides, float size, float edge) {\n uv = 2.0*uv-1.0;\n\tedge = 0.5*max(edge, 1.0e-8)*size;\n\tfloat slice = 6.28318530718/sides;\n float angle = mod(atan(uv.x, uv.y)+3.14159265359, slice)/slice;\n return clamp(min((size-angle)/edge, angle/edge), 0.0, 1.0);\n}\n\n",
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