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Extend BRDF

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Onek8
2026-07-27 12:10:11 -07:00
parent 0b4184ccc2
commit 7aeebf2008
24 changed files with 878 additions and 3 deletions
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72
leenkx/blender/lnx/material/make.py
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@ -40,6 +40,8 @@ def parse(material: Material, mat_data, mat_users: Dict[Material, List[Object]],
wrd = bpy.data.worlds['Lnx']
rpdat = lnx.utils.get_rp()
mat_state.features = {}
# Texture caching for material batching
batch_cached_textures = []
@ -120,6 +122,76 @@ def parse(material: Material, mat_data, mat_users: Dict[Material, List[Object]],
const['intValue'] = 0
c['bind_constants'].append(const)
# extended BRDF parameters as bind_constants
if rpdat.rp_renderer == 'Deferred':
feats = mat_state.features
def try_float(val_str, default=1.0):
try:
return float(val_str)
except (ValueError, TypeError):
return default
has_ext_brdf = False
if feats.get('clearcoat', '0.0') not in ('0.0', '0', ''):
c['bind_constants'].append({'name': 'clearcoat', 'floatValue': try_float(feats.get('clearcoat', '1.0'))})
c['bind_constants'].append({'name': 'clearcoatRough', 'floatValue': try_float(feats.get('clearcoatRough', '0.03'), 0.03)})
c['bind_constants'].append({'name': 'coatIOR', 'floatValue': try_float(feats.get('coatIOR', '1.5'), 1.5)})
c['bind_constants'].append({'name': 'coatTintR', 'floatValue': try_float(feats.get('coatTintR', '1.0'), 1.0)})
c['bind_constants'].append({'name': 'coatTintG', 'floatValue': try_float(feats.get('coatTintG', '1.0'), 1.0)})
c['bind_constants'].append({'name': 'coatTintB', 'floatValue': try_float(feats.get('coatTintB', '1.0'), 1.0)})
if '_ClearCoat' not in wrd.world_defs:
wrd.world_defs += '_ClearCoat'
has_ext_brdf = True
if feats.get('sheen', '0.0') not in ('0.0', '0', ''):
c['bind_constants'].append({'name': 'sheen', 'floatValue': try_float(feats.get('sheen', '1.0'))})
c['bind_constants'].append({'name': 'sheenRough', 'floatValue': try_float(feats.get('sheenRough', '0.5'), 0.5)})
c['bind_constants'].append({'name': 'sheenTintR', 'floatValue': try_float(feats.get('sheenTintR', '1.0'), 1.0)})
c['bind_constants'].append({'name': 'sheenTintG', 'floatValue': try_float(feats.get('sheenTintG', '1.0'), 1.0)})
c['bind_constants'].append({'name': 'sheenTintB', 'floatValue': try_float(feats.get('sheenTintB', '1.0'), 1.0)})
if '_Sheen' not in wrd.world_defs:
wrd.world_defs += '_Sheen'
has_ext_brdf = True
if feats.get('subsurface', '0.0') not in ('0.0', '0', '') and rpdat.rp_sss_state != 'Off' and not mat_uses_sss:
c['bind_constants'].append({'name': 'subsurface', 'floatValue': try_float(feats.get('subsurface', '1.0'))})
c['bind_constants'].append({'name': 'subsurfaceAnisotropy', 'floatValue': try_float(feats.get('subsurfaceAnisotropy', '0.0'), 0.0)})
c['bind_constants'].append({'name': 'subsurfaceRadiusR', 'floatValue': try_float(feats.get('subsurfaceRadiusR', '1.0'), 1.0)})
c['bind_constants'].append({'name': 'subsurfaceRadiusG', 'floatValue': try_float(feats.get('subsurfaceRadiusG', '0.2'), 0.2)})
c['bind_constants'].append({'name': 'subsurfaceRadiusB', 'floatValue': try_float(feats.get('subsurfaceRadiusB', '0.1'), 0.1)})
c['bind_constants'].append({'name': 'subsurfaceColorR', 'floatValue': try_float(feats.get('subsurfaceColorR', '0.8'), 0.8)})
c['bind_constants'].append({'name': 'subsurfaceColorG', 'floatValue': try_float(feats.get('subsurfaceColorG', '0.8'), 0.8)})
c['bind_constants'].append({'name': 'subsurfaceColorB', 'floatValue': try_float(feats.get('subsurfaceColorB', '0.8'), 0.8)})
if '_Subsurface' not in wrd.world_defs:
wrd.world_defs += '_Subsurface'
has_ext_brdf = True
if feats.get('anisotropy', '0.0') not in ('0.0', '0', ''):
c['bind_constants'].append({'name': 'anisotropy', 'floatValue': try_float(feats.get('anisotropy', '1.0'))})
c['bind_constants'].append({'name': 'anisoRot', 'floatValue': try_float(feats.get('anisoRot', '0.0'), 0.0)})
if '_Anisotropy' not in wrd.world_defs:
wrd.world_defs += '_Anisotropy'
has_ext_brdf = True
if feats.get('transmission', '0.0') not in ('0.0', '0', ''):
c['bind_constants'].append({'name': 'transmission', 'floatValue': try_float(feats.get('transmission', '1.0'))})
c['bind_constants'].append({'name': 'transmissionRough', 'floatValue': try_float(feats.get('transmissionRough', '0.0'), 0.0)})
c['bind_constants'].append({'name': 'ior', 'floatValue': try_float(feats.get('ior', '1.45'), 1.45)})
c['bind_constants'].append({'name': 'thinWall', 'floatValue': try_float(feats.get('thinWall', '0.0'), 0.0)})
if '_Transmission' not in wrd.world_defs:
wrd.world_defs += '_Transmission'
has_ext_brdf = True
if has_ext_brdf and '_ExtBRDF' not in wrd.world_defs:
wrd.world_defs += '_ExtBRDF'
# assign materialID for extended BRDF if not already set
# coexist with Scene.hx for last materialID in bind_constants
if has_ext_brdf and material.lnx_material_id == 0:
if mat_state.next_ext_mat_id <= 15:
ext_id = mat_state.next_ext_mat_id
mat_state.next_ext_mat_id += 1
c['bind_constants'].append({'name': 'materialID', 'intValue': ext_id})
else:
log.warn(f'material "{material.name}": extended BRDF material limit (15) exceeded, extended BRDF will be disabled for this material')
# TODO: Mesh only material batching
if wrd.lnx_batch_materials:
# Set textures uniforms