35 lines
1.8 KiB
GDScript
35 lines
1.8 KiB
GDScript
tool
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extends "res://addons/procedural_material/node_base.gd"
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var amount = 0.0
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func _ready():
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set_slot(0, true, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
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set_slot(1, true, 0, Color(0.5, 0.5, 1), false, 0, Color(0.5, 0.5, 1))
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initialize_properties([ $amount ])
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func _get_shader_code(uv):
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var rv = { defs="", code="" }
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var src = get_source()
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if src == null:
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return rv
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var variant_index = generated_variants.find(uv)
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if variant_index == -1:
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var epsilon = 0.005
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variant_index = generated_variants.size()
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generated_variants.append(uv)
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var src_code_tl = src.get_shader_code(uv+"+vec2(-%.9f, -%.9f)" % [ epsilon, epsilon ])
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var src_code_l = src.get_shader_code(uv+"+vec2(-%.9f, 0.0)" % [ epsilon, ])
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var src_code_bl = src.get_shader_code(uv+"+vec2(-%.9f, %.9f)" % [ epsilon, epsilon ])
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var src_code_tr = src.get_shader_code(uv+"+vec2(%.9f, -%.9f)" % [ epsilon, epsilon ])
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var src_code_r = src.get_shader_code(uv+"+vec2(%.9f, 0.0)" % [ epsilon ])
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var src_code_br = src.get_shader_code(uv+"+vec2(%.9f, %.9f)" % [ epsilon, epsilon ])
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var src_code_t = src.get_shader_code(uv+"+vec2(0.0, -%.9f)" % [ epsilon ])
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var src_code_b = src.get_shader_code(uv+"+vec2(0.0, %.9f)" % [ epsilon ])
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rv.defs = src_code_tl.defs
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rv.code = src_code_tl.code+src_code_l.code+src_code_bl.code+src_code_tr.code
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rv.code += src_code_r.code+src_code_br.code+src_code_t.code+src_code_b.code
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rv.code += "vec3 %s_%d_rgb = vec3(0.5, 0.5, 0.5) + 0.5*normalize(%.9f*vec3(%s+2.0*%s+%s-%s-2.0*%s-%s, %s+2.0*%s+%s-%s-2.0*%s-%s, 0.0) + vec3(0.0, 0.0, -1.0));\n" % [ name, variant_index, amount, src_code_tr.f, src_code_r.f, src_code_br.f, src_code_tl.f, src_code_l.f, src_code_bl.f, src_code_bl.f, src_code_b.f, src_code_br.f, src_code_tl.f, src_code_t.f, src_code_tr.f ]
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rv.rgb = name+"_"+str(variant_index)+"_rgb"
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return rv
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