Cr8-xyz/blender
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Cycles: add Principled Volume shader.

Browse Source 
Similar to the Principled BSDF, this should make it easier to set up volume
materials. Smoke and fire can be rendererd with just a single principled
volume node, the appropriate attributes will be used when available. The node
also works for simpler homogeneous volumes like water or mist.

Differential Revision: https://developer.blender.org/D3033
This commit is contained in:
Brecht Van Lommel
2018-01-30 15:05:19 +01:00
parent acd619d7c9
commit 0aec2dcd3a
17 changed files with 456 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files

98
release/scripts/startup/bl_operators/object_quick_effects.py
View File

@@ -387,102 +387,16 @@ class QuickSmoke(Operator):
node_out = nodes.new(type='ShaderNodeOutputMaterial')
node_out.location = grid_location(6, 1)
# Add shader 1
node_add_shader_1 = nodes.new(type='ShaderNodeAddShader')
node_add_shader_1.location = grid_location(5, 1)
links.new(node_add_shader_1.outputs["Shader"],
# Add Principled Volume
node_principled = nodes.new(type='ShaderNodeVolumePrincipled')
node_principled.location = grid_location(4, 1)
links.new(node_principled.outputs["Volume"],
node_out.inputs["Volume"])
if self.style in {'SMOKE', 'FIRE', 'BOTH'}:
# Smoke
# Add shader 2
node_add_shader_2 = nodes.new(type='ShaderNodeAddShader')
node_add_shader_2.location = grid_location(4, 2)
links.new(node_add_shader_2.outputs["Shader"],
node_add_shader_1.inputs[0])
# Volume scatter
node_scatter = nodes.new(type='ShaderNodeVolumeScatter')
node_scatter.location = grid_location(3, 3)
links.new(node_scatter.outputs["Volume"],
node_add_shader_2.inputs[0])
# Volume absorption
node_absorption = nodes.new(type='ShaderNodeVolumeAbsorption')
node_absorption.location = grid_location(3, 2)
links.new(node_absorption.outputs["Volume"],
node_add_shader_2.inputs[1])
# Density Multiplier
node_densmult = nodes.new(type='ShaderNodeMath')
node_densmult.location = grid_location(2, 2)
node_densmult.operation = 'MULTIPLY'
node_densmult.inputs[1].default_value = 5.0
links.new(node_densmult.outputs["Value"],
node_scatter.inputs["Density"])
links.new(node_densmult.outputs["Value"],
node_absorption.inputs["Density"])
# Attribute "density"
node_attrib_density = nodes.new(type='ShaderNodeAttribute')
node_attrib_density.attribute_name = "density"
node_attrib_density.location = grid_location(1, 2)
links.new(node_attrib_density.outputs["Fac"],
node_densmult.inputs[0])
# Attribute "color"
node_attrib_color = nodes.new(type='ShaderNodeAttribute')
node_attrib_color.attribute_name = "color"
node_attrib_color.location = grid_location(2, 3)
links.new(node_attrib_color.outputs["Color"],
node_scatter.inputs["Color"])
links.new(node_attrib_color.outputs["Color"],
node_absorption.inputs["Color"])
node_principled.inputs["Density"].default_value = 5.0
if self.style in {'FIRE', 'BOTH'}:
# Fire
# Emission
node_emission = nodes.new(type='ShaderNodeEmission')
node_emission.inputs["Color"].default_value = (0.8, 0.1, 0.01, 1.0)
node_emission.location = grid_location(4, 1)
links.new(node_emission.outputs["Emission"],
node_add_shader_1.inputs[1])
# Flame strength multiplier
node_flame_strength_mult = nodes.new(type='ShaderNodeMath')
node_flame_strength_mult.location = grid_location(3, 1)
node_flame_strength_mult.operation = 'MULTIPLY'
node_flame_strength_mult.inputs[1].default_value = 2.5
links.new(node_flame_strength_mult.outputs["Value"],
node_emission.inputs["Strength"])
# Color ramp Flame
node_flame_ramp = nodes.new(type='ShaderNodeValToRGB')
node_flame_ramp.location = grid_location(1, 1)
ramp = node_flame_ramp.color_ramp
ramp.interpolation = 'EASE'
# orange
elem = ramp.elements.new(0.5)
elem.color = (1.0, 0.128, 0.0, 1.0)
# yellow
elem = ramp.elements.new(0.9)
elem.color = (0.9, 0.6, 0.1, 1.0)
links.new(node_flame_ramp.outputs["Color"],
node_emission.inputs["Color"])
# Attribute "flame"
node_attrib_flame = nodes.new(type='ShaderNodeAttribute')
node_attrib_flame.attribute_name = "flame"
node_attrib_flame.location = grid_location(0, 1)
links.new(node_attrib_flame.outputs["Fac"],
node_flame_ramp.inputs["Fac"])
links.new(node_attrib_flame.outputs["Fac"],
node_flame_strength_mult.inputs[0])
node_principled.inputs["Blackbody Intensity"].default_value = 1.0
# Blender Internal
else: