30 lines
683 B
GDScript
30 lines
683 B
GDScript
tool
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extends "res://addons/procedural_material/node_base.gd"
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var sigma = 1.0
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var epsilon = 0.005
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func _ready():
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initialize_properties([ $HBoxContainer1/sigma, $HBoxContainer2/epsilon ])
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func _get_shader_code(uv):
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var convolution = {
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kernel=[
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0
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],
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epsilon=epsilon
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}
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var sum = 0
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for x in range(-2, 3):
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for y in range(-2, 3):
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var coef = exp(-0.5*(pow((x-2)/sigma, 2.0) + pow((y-2)/sigma, 2.0))) / (2.0*PI*sigma*sigma)
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convolution.kernel[x+2+5*(y+2)] = coef
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sum += coef
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for i in range(25):
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convolution.kernel[i] /= sum
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return get_shader_code_convolution(convolution, uv)
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