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73 lines
3.1 KiB
GDScript
73 lines
3.1 KiB
GDScript
extends MultiMeshInstance3D
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@export_range(1, 126) var shell_count = 64
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@export var noise_min: float = 0.4
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@export var noise_max: float = 1.0
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@export var shell_length: float = .1
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@export var shell_distance_attenuation: float = 1.
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@export var thickness: float = 3.4
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@export var attenuation: float = 1.98
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@export var occlusion_bias: float = .04
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@export var shell_color: Vector3 = Vector3(0.2, 0.7, 0.2)
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@export var density: int = 150
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func _generate_mmi(layers: int, mmi: MultiMeshInstance3D, mesh: Mesh, material: Material, cast_shadow: bool):
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var mdt = MeshDataTool.new()
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if mmi.multimesh == null:
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mmi.multimesh = MultiMesh.new()
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mmi.multimesh.transform_format = MultiMesh.TRANSFORM_3D
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var new_mesh: Mesh = mesh.duplicate(true) as Mesh
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#new_mesh = _normals_to_vertex_color(new_mesh, material) # saves normal data as vertex color to be used by the shader (in the orig code)
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mmi.multimesh.mesh = new_mesh
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mmi.multimesh.instance_count = layers
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mmi.multimesh.visible_instance_count = layers
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for surface in new_mesh.get_surface_count():
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material = ShaderMaterial.new()
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material.set_shader(preload("res://grass.gdshader"))
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mmi.multimesh.mesh.surface_set_material(surface, material.duplicate(true))
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for i in range(layers):
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#mmi.multimesh.set_instance_transform(i, Transform3D(Basis(), Vector3(0., .1 * i, 0.)))
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mmi.multimesh.set_instance_transform(i, Transform3D(Basis(), Vector3()))
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var grey = float(i) / float(layers)
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#mmi.multimesh.set_instance_color(i, Color(1., 1., 1., 1.))
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var mat = mmi.multimesh.mesh.surface_get_material(0)
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if mat is ShaderMaterial:
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#print("Setting shader params (", i, ")")
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#mat.set_shader_parameter("_ShellIndex", i)
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mmi.multimesh.set_instance_custom_data(i, Color(i, 0., 0., 0.)) # passes shell index for each instance
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mat.set_shader_parameter("_NoiseMin", noise_min)
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mat.set_shader_parameter("_NoiseMax", noise_max)
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mat.set_shader_parameter("_ShellLength", shell_length)
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mat.set_shader_parameter("_ShellCount", layers)
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mat.set_shader_parameter("_ShellDistanceAttenuation", shell_distance_attenuation)
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mat.set_shader_parameter("_Thickness", thickness)
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mat.set_shader_parameter("_Attenuation", attenuation)
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mat.set_shader_parameter("_OcclusionBias", occlusion_bias)
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mat.set_shader_parameter("_ShellColor", shell_color)
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mat.set_shader_parameter("_Density", density)
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mmi.cast_shadow = 1 if cast_shadow else 0
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func _ready():
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var mat = ShaderMaterial.new()
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#var mat2 = StandardMaterial3D.new()
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mat.set_shader(preload("res://grass.gdshader"))
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self._generate_mmi(self.shell_count, self, self.get_multimesh().mesh, mat, false)
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print("===== Shell Texturing =====")
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print("Layers: ", self.shell_count)
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print("Noise (min): ", self.noise_min)
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print("Noise (max): ", self.noise_max)
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print("Shell length: ", self.shell_length)
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print("Shell count: ", self.shell_count)
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print("Shell distance attenuation: ", self.shell_distance_attenuation)
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print("Thickness: ", self.thickness)
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print("Attenuation: ", self.attenuation)
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print("Occlusion bias: ", self.occlusion_bias)
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print("Shell color: ", self.shell_color)
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print("Density: ", self.density)
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