32 lines
1.0 KiB
GDScript
32 lines
1.0 KiB
GDScript
tool
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extends "res://addons/procedural_material/node_base.gd"
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func _get_shader_code(uv):
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var rv = { defs="", code="" }
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var src0 = get_source(0)
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var src1 = get_source(1)
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var src2 = get_source(2)
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var src0_code = { defs="", code="", f="0.0" }
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var src1_code = { defs="", code="", f="0.0" }
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var src2_code = { defs="", code="", f="0.0" }
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if src0 != null:
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src0_code = src0.get_shader_code(uv)
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if src1 != null:
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src1_code = src1.get_shader_code(uv)
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if src2 != null:
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src2_code = src2.get_shader_code(uv)
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if generated_variants.empty():
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rv.defs = src0_code.defs;
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rv.defs += src1_code.defs;
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rv.defs += src2_code.defs;
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var variant_index = generated_variants.find(uv)
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if variant_index == -1:
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variant_index = generated_variants.size()
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generated_variants.append(uv)
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rv.code = src0_code.code
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rv.code += src1_code.code
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rv.code += src2_code.code
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rv.code += "vec3 %s_%d_rgb = vec3(%s, %s, %s);\n" % [ name, variant_index, src0_code.f, src1_code.f, src2_code.f ]
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rv.rgb = "%s_%d_rgb" % [ name, variant_index ]
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return rv
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