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korman
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Fix sharp lightmap edges 

See this thread for more information:
http://forum.guildofwriters.org/viewtopic.php?f=7&t=6088
pull/6/head
Adam Johnson 10 years ago
parent
6318c3c40c
commit
cce4533a25
5 changed files with 65 additions and 39 deletions
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  1. 5
      korman/exporter/material.py
  2. 2
      korman/exporter/mesh.py
  3. 88
      korman/operators/op_lightmap.py
  4. 5
      korman/properties/modifiers/render.py
  5. 4
      korman/ui/modifiers/render.py

5
korman/exporter/material.py
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@ -139,10 +139,7 @@ class _Texture:
if name.find(".") == -1:
return "{}{}".format(name, newext)
name, end = os.path.splitext(name)
if name.find(".") == -1:
return "{}{}".format(name, newext)
name, oldext = os.path.splitext(name)
return "{}{}{}".format(name, end, newext)
return "{}{}".format(name, newext)
def _update(self, other):
"""Update myself with any props that might be overridable from another copy of myself"""

2
korman/exporter/mesh.py
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@ -298,9 +298,7 @@ class MeshConverter:
lm = bo.plasma_modifiers.lightmap
if lm.enabled:
print(" Baking lightmap...")
print("====")
bpy.ops.object.plasma_lightmap_autobake(light_group=lm.light_group)
print("====")
else:
for vcol_layer in bo.data.vertex_colors:
name = vcol_layer.name.lower()

88
korman/operators/op_lightmap.py
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@ -37,6 +37,7 @@ class _LightingOperator:
toggle.track(render, "use_envmaps", False)
toggle.track(render, "use_raytrace", True)
toggle.track(render, "bake_type", "FULL")
toggle.track(render, "use_bake_clear", True)
def _generate_lightgroups(self, mesh, user_lg=None):
"""Makes a new light group for the baking process that excludes all Plasma RT lamps"""
@ -87,13 +88,32 @@ class LightmapAutobakeOperator(_LightingOperator, bpy.types.Operator):
def __init__(self):
super().__init__()
def _associate_image_with_uvtex(self, uvtex, im):
# Associate the image with all the new UVs
# NOTE: no toggle here because it's the artist's problem if they are looking at our
# super swagalicious LIGHTMAPGEN uvtexture...
for i in uvtex.data:
i.image = im
def _get_base_uvtex(self, mesh, modifier):
if modifier.uv_map:
return mesh.uv_textures[modifier.uv_map]
for i in mesh.uv_textures:
if i.name != "LIGHTMAPGEN":
return i
return None
def execute(self, context):
obj = context.active_object
mesh = obj.data
modifier = obj.plasma_modifiers.lightmap
uv_textures = mesh.uv_textures
with GoodNeighbor() as toggle:
# We need to ensure that we bake onto the "BlahObject_LIGHTMAPGEN" image
obj = context.active_object
data_images = bpy.data.images
im_name = "{}_LIGHTMAPGEN".format(obj.name)
size = obj.plasma_modifiers.lightmap.resolution
im_name = "{}_LIGHTMAPGEN.png".format(obj.name)
size = modifier.resolution
im = data_images.get(im_name)
if im is None:
@ -104,36 +124,42 @@ class LightmapAutobakeOperator(_LightingOperator, bpy.types.Operator):
data_images.remove(im)
im = data_images.new(im_name, width=size, height=size)
# This just wraps Blender's internal lightmap UV whatchacallit...
# We want to ensure that we use the UV Layer "LIGHTMAPGEN" and fetch the size from
# the lightmap modifier. What fun...
mesh = context.active_object.data
# Search for LIGHTMAPGEN
for i in mesh.uv_textures:
if i.name == "LIGHTMAPGEN":
uvtex = i
break
else:
toggle.track(i, "active_render", False)
# If there is a cached LIGHTMAPGEN uvtexture, nuke it
uvtex = uv_textures.get("LIGHTMAPGEN", None)
if uvtex is not None:
uv_textures.remove(uvtex)
# Originally, we used the lightmap unpack UV operator to make our UV texture, however,
# this tended to create sharp edges. There was already a discussion about this on the
# Guild of Writers forum, so I'm implementing a code version of dendwaler's process,
# as detailed here: http://forum.guildofwriters.org/viewtopic.php?p=62572#p62572
uv_base = self._get_base_uvtex(mesh, modifier)
if uv_base is not None:
uv_textures.active = uv_base
# this will copy the UVs to the new UV texture
uvtex = uv_textures.new("LIGHTMAPGEN")
uv_textures.active = uvtex
self._associate_image_with_uvtex(uvtex, im)
# here we go...
bpy.ops.object.mode_set(mode="EDIT")
bpy.ops.mesh.select_all(action="SELECT")
bpy.ops.uv.average_islands_scale()
bpy.ops.uv.pack_islands()
else:
uvtex = mesh.uv_textures.new("LIGHTMAPGEN")
uvtex.active_render = False
toggle.track(mesh.uv_textures, "active", uvtex)
toggle.track(uvtex, "active_render", True)
# Now, enter edit mode on this mesh and unwrap.
bpy.ops.object.mode_set(mode="EDIT")
bpy.ops.mesh.select_all(action="SELECT")
bpy.ops.uv.lightmap_pack(PREF_CONTEXT="ALL_FACES", PREF_IMG_PX_SIZE=size)
# same thread, see Sirius's suggestion RE smart unwrap. this seems to yield good
# results in my tests. it will be good enough for quick exports.
uvtex = uv_textures.new("LIGHTMAPGEN")
self._associate_image_with_uvtex(uvtex, im)
bpy.ops.object.mode_set(mode="EDIT")
bpy.ops.mesh.select_all(action="SELECT")
bpy.ops.uv.smart_project()
bpy.ops.object.mode_set(mode="OBJECT")
mesh.update()
# Associate the image with all the new UVs
# NOTE: no toggle here because it's the artist's problem if they are looking at our
# super swagalicious LIGHTMAPGEN uvtexture...
for i in mesh.uv_textures.active.data:
i.image = im
# Now, set the new LIGHTMAPGEN uv layer as what we want to render to...
for i in uv_textures:
value = i.name == "LIGHTMAPGEN"
i.active = value
i.active_render = value
# Bake settings
render = context.scene.render
@ -168,7 +194,7 @@ class LightmapAutobakePreviewOperator(_LightingOperator, bpy.types.Operator):
if tex is None:
tex = bpy.data.textures.new("LIGHTMAPGEN_PREVIEW", "IMAGE")
tex.extension = "CLIP"
tex.image = bpy.data.images["{}_LIGHTMAPGEN".format(context.active_object.name)]
tex.image = bpy.data.images["{}_LIGHTMAPGEN.png".format(context.active_object.name)]
return {"FINISHED"}

5
korman/properties/modifiers/render.py
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@ -39,13 +39,16 @@ class PlasmaLightMapGen(PlasmaModifierProperties):
light_group = StringProperty(name="Light Group",
description="Group that defines the collection of lights to bake")
uv_map = StringProperty(name="UV Texture",
description="UV Texture used as the basis for the lightmap")
def created(self, obj):
self.display_name = "{}_LIGHTMAPGEN".format(obj.name)
def export(self, exporter, bo, so):
mat_mgr = exporter.mesh.material
materials = mat_mgr.get_materials(bo)
lightmap_im = bpy.data.images.get("{}_LIGHTMAPGEN".format(bo.name))
lightmap_im = bpy.data.images.get("{}_LIGHTMAPGEN.png".format(bo.name))
# Find the stupid UVTex
uvw_src = 0

4
korman/ui/modifiers/render.py
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@ -18,6 +18,8 @@ import bpy
def lightmap(modifier, layout, context):
layout.row(align=True).prop(modifier, "quality", expand=True)
layout.prop_search(modifier, "light_group", bpy.data, "groups", icon="GROUP")
layout.prop_search(modifier, "uv_map", context.active_object.data, "uv_textures")
operator = layout.operator("object.plasma_lightmap_preview", "Preview Lightmap", icon="RENDER_STILL")
operator.light_group = modifier.light_group
@ -27,6 +29,6 @@ def lightmap(modifier, layout, context):
# well... It was nice knowing you!
tex = bpy.data.textures.get("LIGHTMAPGEN_PREVIEW")
if tex is not None:
im_name = "{}_LIGHTMAPGEN".format(context.active_object.name)
im_name = "{}_LIGHTMAPGEN.png".format(context.active_object.name)
if tex.image.name == im_name:
layout.template_preview(tex, show_buttons=False)

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