mirror of https://github.com/H-uru/korman.git
8 changed files with 358 additions and 272 deletions
@ -0,0 +1,332 @@
|
||||
# This file is part of Korman. |
||||
# |
||||
# Korman is free software: you can redistribute it and/or modify |
||||
# it under the terms of the GNU General Public License as published by |
||||
# the Free Software Foundation, either version 3 of the License, or |
||||
# (at your option) any later version. |
||||
# |
||||
# Korman is distributed in the hope that it will be useful, |
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
# GNU General Public License for more details. |
||||
# |
||||
# You should have received a copy of the GNU General Public License |
||||
# along with Korman. If not, see <http://www.gnu.org/licenses/>. |
||||
|
||||
import bpy |
||||
from bpy.app.handlers import persistent |
||||
|
||||
from .mesh import _VERTEX_COLOR_LAYERS |
||||
from ..helpers import * |
||||
|
||||
_NUM_RENDER_LAYERS = 20 |
||||
|
||||
class LightBaker: |
||||
"""ExportTime Lighting""" |
||||
|
||||
def __init__(self): |
||||
self._lightgroups = {} |
||||
self._uvtexs = {} |
||||
|
||||
def _apply_render_settings(self, toggle): |
||||
render = bpy.context.scene.render |
||||
toggle.track(render, "use_textures", False) |
||||
toggle.track(render, "use_shadows", True) |
||||
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 _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 _bake_lightmaps(self, objs, layers, toggle): |
||||
scene = bpy.context.scene |
||||
scene.layers = layers |
||||
toggle.track(scene.render, "use_bake_to_vertex_color", False) |
||||
self._select_only(objs) |
||||
bpy.ops.object.bake_image() |
||||
|
||||
def _bake_vcols(self, objs, toggle): |
||||
bpy.context.scene.layers = (True,) * _NUM_RENDER_LAYERS |
||||
toggle.track(bpy.context.scene.render, "use_bake_to_vertex_color", True) |
||||
self._select_only(objs) |
||||
bpy.ops.object.bake_image() |
||||
|
||||
def bake_static_lighting(self, objs): |
||||
"""Bakes all static lighting for Plasma geometry""" |
||||
|
||||
print("\nBaking Static Lighting...") |
||||
bake = self._harvest_bakable_objects(objs) |
||||
|
||||
with GoodNeighbor() as toggle: |
||||
try: |
||||
# reduce the amount of indentation |
||||
self._bake_static_lighting(bake, toggle) |
||||
finally: |
||||
# this stuff has been observed to be problematic with GoodNeighbor |
||||
self._pop_lightgroups() |
||||
self._restore_uvtexs() |
||||
|
||||
def _bake_static_lighting(self, bake, toggle): |
||||
# Step 0.9: Make all layers visible. |
||||
# This prevents context operators from phailing. |
||||
bpy.context.scene.layers = (True,) * _NUM_RENDER_LAYERS |
||||
|
||||
# Step 1: Prepare... Apply UVs, etc, etc, etc |
||||
for key, value in bake.copy().items(): |
||||
if key[0] == "lightmap": |
||||
for i in value: |
||||
if not self._prep_for_lightmap(i, toggle): |
||||
bake[key].remove(i) |
||||
elif key[0] == "vcol": |
||||
for i in value: |
||||
if not self._prep_for_vcols(i, toggle): |
||||
bake[key].remove(i) |
||||
else: |
||||
raise RuntimeError(key[0]) |
||||
|
||||
# Step 2: BAKE! |
||||
self._apply_render_settings(toggle) |
||||
for key, value in bake.items(): |
||||
if not value: |
||||
continue |
||||
|
||||
if key[0] == "lightmap": |
||||
print(" {} Lightmap(s) [H:{:X}]".format(len(value), hash(key))) |
||||
self._bake_lightmaps(value, key[1:], toggle) |
||||
elif key[0] == "vcol": |
||||
print(" {} Crap Light(s)".format(len(value))) |
||||
self._bake_vcols(value, toggle) |
||||
else: |
||||
raise RuntimeError(key[0]) |
||||
|
||||
def _generate_lightgroup(self, mesh, user_lg=None): |
||||
"""Makes a new light group for the baking process that excludes all Plasma RT lamps""" |
||||
|
||||
if user_lg is not None: |
||||
user_lg = bpy.data.groups.get(user_lg) |
||||
shouldibake = (user_lg and user_lg.objects) |
||||
|
||||
for material in mesh.materials: |
||||
if material is None: |
||||
# material is not assigned to this material... (why is this even a thing?) |
||||
continue |
||||
|
||||
# Already done it? |
||||
name = material.name |
||||
lg = material.light_group |
||||
if name in self._lightgroups: |
||||
# No, this is not Pythonic, but bpy_prop_collection is always "True", |
||||
# even when empty. Sigh. |
||||
return bool(len(lg.objects)) |
||||
else: |
||||
self._lightgroups[name] = lg |
||||
|
||||
if user_lg is None: |
||||
if not lg or len(lg.objects) == 0: |
||||
source = [i for i in bpy.data.objects if i.type == "LAMP"] |
||||
else: |
||||
source = lg.objects |
||||
dest = bpy.data.groups.new("_LIGHTMAPGEN_{}".format(name)) |
||||
|
||||
# Only use non-RT lights |
||||
for obj in source: |
||||
if obj.plasma_object.enabled: |
||||
continue |
||||
dest.objects.link(obj) |
||||
shouldibake = True |
||||
else: |
||||
dest = user_lg |
||||
material.light_group = dest |
||||
return shouldibake |
||||
|
||||
def _get_lightmap_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 _harvest_bakable_objects(self, objs): |
||||
# The goal here is to minimize the calls to bake_image, so we are going to collect everything |
||||
# that needs to be baked and sort it out by configuration. |
||||
bake = { ("vcol",): [] } |
||||
for i in objs: |
||||
if i.type != "MESH": |
||||
continue |
||||
|
||||
mods = i.plasma_modifiers |
||||
if mods.lightmap.enabled: |
||||
key = ("lightmap",) + tuple(mods.lightmap.render_layers) |
||||
if key in bake: |
||||
bake[key].append(i) |
||||
else: |
||||
bake[key] = [i,] |
||||
elif not mods.water_basic.enabled: |
||||
vcols = i.data.vertex_colors |
||||
for j in _VERTEX_COLOR_LAYERS: |
||||
if j in vcols: |
||||
break |
||||
else: |
||||
bake[("vcol",)].append(i) |
||||
return bake |
||||
|
||||
def _pop_lightgroups(self): |
||||
for mat_name, lg in self._lightgroups.items(): |
||||
material = bpy.data.materials[mat_name] |
||||
_fake = material.light_group |
||||
if _fake is not None and _fake.name.startswith("_LIGHTMAPGEN"): |
||||
for i in _fake.objects: |
||||
_fake.objects.unlink(i) |
||||
_fake.user_clear() |
||||
bpy.data.groups.remove(_fake) |
||||
material.light_group = lg |
||||
self._lightgroups.clear() |
||||
|
||||
def _prep_for_lightmap(self, bo, toggle): |
||||
mesh = bo.data |
||||
modifier = bo.plasma_modifiers.lightmap |
||||
uv_textures = mesh.uv_textures |
||||
|
||||
# Create a special light group for baking |
||||
if not self._generate_lightgroup(mesh, modifier.light_group): |
||||
return False |
||||
|
||||
# We need to ensure that we bake onto the "BlahObject_LIGHTMAPGEN" image |
||||
data_images = bpy.data.images |
||||
im_name = "{}_LIGHTMAPGEN.png".format(bo.name) |
||||
size = modifier.resolution |
||||
|
||||
im = data_images.get(im_name) |
||||
if im is None: |
||||
im = data_images.new(im_name, width=size, height=size) |
||||
elif im.size[0] != size: |
||||
# Force delete and recreate the image because the size is out of date |
||||
im.user_clear() |
||||
data_images.remove(im) |
||||
im = data_images.new(im_name, width=size, height=size) |
||||
|
||||
# If there is a cached LIGHTMAPGEN uvtexture, nuke it |
||||
uvtex = uv_textures.get("LIGHTMAPGEN", None) |
||||
if uvtex is not None: |
||||
uv_textures.remove(uvtex) |
||||
|
||||
# Make sure the object can be baked to. NOTE this also makes sure we can enter edit mode |
||||
# TROLLING LOL LOL LOL |
||||
toggle.track(bo, "hide", False) |
||||
toggle.track(bo, "hide_render", False) |
||||
toggle.track(bo, "hide_select", False) |
||||
|
||||
# Because the way Blender tracks active UV layers is massively stupid... |
||||
self._uvtexs[mesh.name] = uv_textures.active.name |
||||
|
||||
# We must make this the active object before touching any operators |
||||
bpy.context.scene.objects.active = bo |
||||
|
||||
# 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: https://forum.guildofwriters.org/viewtopic.php?p=62572#p62572 |
||||
uv_base = self._get_lightmap_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: |
||||
# 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") |
||||
|
||||
# Now, set the new LIGHTMAPGEN uv layer as what we want to render to... |
||||
# NOTE that this will need to be reset by us to what the user had previously |
||||
# Not using toggle.track due to observed oddities |
||||
for i in uv_textures: |
||||
value = i.name == "LIGHTMAPGEN" |
||||
i.active = value |
||||
i.active_render = value |
||||
|
||||
# Indicate we should bake |
||||
return True |
||||
|
||||
def _prep_for_vcols(self, bo, toggle): |
||||
mesh = bo.data |
||||
vcols = mesh.vertex_colors |
||||
|
||||
# Create a special light group for baking |
||||
if not self._generate_lightgroup(mesh): |
||||
return False |
||||
|
||||
# Make sure the object can be baked to. NOTE this also makes sure we can enter edit mode |
||||
# TROLLING LOL LOL LOL |
||||
toggle.track(bo, "hide", False) |
||||
toggle.track(bo, "hide_render", False) |
||||
toggle.track(bo, "hide_select", False) |
||||
|
||||
# I have heard tale of some moar "No valid image to bake to" boogs if there is a really |
||||
# old copy of the autocolor layer on the mesh. Nuke it. |
||||
autocolor = vcols.get("autocolor") |
||||
if autocolor is not None: |
||||
vcols.remove(autocolor) |
||||
autocolor = vcols.new("autocolor") |
||||
toggle.track(vcols, "active", autocolor) |
||||
|
||||
# Mark "autocolor" as our active render layer |
||||
for vcol_layer in mesh.vertex_colors: |
||||
autocol = vcol_layer.name == "autocolor" |
||||
toggle.track(vcol_layer, "active_render", autocol) |
||||
toggle.track(vcol_layer, "active", autocol) |
||||
mesh.update() |
||||
|
||||
# Indicate we should bake |
||||
return True |
||||
|
||||
def _restore_uvtexs(self): |
||||
for mesh_name, uvtex_name in self._uvtexs.items(): |
||||
mesh = bpy.data.meshes[mesh_name] |
||||
for i in mesh.uv_textures: |
||||
i.active = uvtex_name == i.name |
||||
mesh.uv_textures.active = mesh.uv_textures[uvtex_name] |
||||
|
||||
def _select_only(self, objs): |
||||
if isinstance(objs, bpy.types.Object): |
||||
for i in bpy.data.objects: |
||||
i.select = i == objs |
||||
else: |
||||
for i in bpy.data.objects: |
||||
i.select = i in objs |
||||
|
||||
@persistent |
||||
def _toss_garbage(scene): |
||||
"""Removes all LIGHTMAPGEN and autocolor garbage before saving""" |
||||
for i in bpy.data.images: |
||||
if i.name.endswith("_LIGHTMAPGEN.png"): |
||||
i.user_clear() |
||||
bpy.data.images.remove(i) |
||||
for i in bpy.data.meshes: |
||||
for uv_tex in i.uv_textures: |
||||
if uv_tex.name == "LIGHTMAPGEN": |
||||
i.uv_textures.remove(uv_tex) |
||||
for vcol in i.vertex_colors: |
||||
if vcol.name == "autocolor": |
||||
i.vertex_colors.remove(vcol) |
||||
|
||||
# collects light baking garbage |
||||
bpy.app.handlers.save_pre.append(_toss_garbage) |
||||
Loading…
Reference in new issue