def test02_chi2_rough_grazing(variant_packet_rgb):
xml = """<float name="alpha" value="0.5"/>"""
wi = ek.normalize([0.8, 0.3, 0.05])
sample_func, pdf_func = BSDFAdapter("roughdielectric", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3)
assert chi2.run()
def test01_chi2_smooth(variant_packet_rgb):
xml = """<float name="alpha" value="0.05"/>"""
wi = ek.normalize([1.0, 1.0, 1.0])
sample_func, pdf_func = BSDFAdapter("roughconductor", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3,
ires=8)
assert chi2.run()
def test01_chi2_smooth(variant_packet_rgb):
xml = """<float name="alpha" value="0.05"/>
<spectrum name="specular_reflectance" value="0.7"/>
<spectrum name="diffuse_reflectance" value="0.1"/>"""
sample_func, pdf_func = BSDFAdapter("roughplastic", xml)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3)
assert chi2.run()
def test07_chi2_rough_from_inside(variant_packet_rgb):
xml = """<float name="alpha" value="0.5"/>"""
wi = ek.normalize([0.2, -0.6, -0.5])
sample_func, pdf_func = BSDFAdapter("roughdielectric", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3,
res=201)
assert chi2.run()
def test03_chi2(variant_packet_rgb):
from mitsuba.python.chi2 import BSDFAdapter, ChiSquareTest, SphericalDomain
sample_func, pdf_func = BSDFAdapter("diffuse", '')
chi2 = ChiSquareTest(
domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3
)
assert chi2.run()
def test06_chi2_rough_ggx_visible(variant_packet_rgb):
xml = """<float name="alpha" value="0.5"/>
<boolean name="sample_visible" value="true"/>
<string name="distribution" value="ggx"/>
"""
wi = ek.normalize([0.5, 0.5, 0.001])
sample_func, pdf_func = BSDFAdapter("roughdielectric", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3)
assert chi2.run()
def test05_chi2_aniso_ggx_visible(variant_packet_rgb):
xml = """<float name="alpha_u" value="0.2"/>
<float name="alpha_v" value="0.05"/>
<string name="distribution" value="ggx"/>
<boolean name="sample_visible" value="true"/>"""
wi = ek.normalize([1.0, 1.0, 1.0])
sample_func, pdf_func = BSDFAdapter("roughconductor", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3,
ires=8)
assert chi2.run()
def test03_chi2_rough_beckmann_all(variant_packet_rgb):
xml = """<float name="alpha" value="0.5"/>
<boolean name="sample_visible" value="false"/>
<string name="distribution" value="beckmann"/>
"""
wi = ek.normalize([0.5, 0.0, 0.5])
sample_func, pdf_func = BSDFAdapter("roughdielectric", xml, wi=wi)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3,
res=201)
assert chi2.run()
def test02_chi2(variant_packet_rgb):
from mitsuba.python.chi2 import PhaseFunctionAdapter, ChiSquareTest, SphericalDomain
from mitsuba.core import ScalarBoundingBox2f
sample_func, pdf_func = PhaseFunctionAdapter(
"hg", '<float name="g" value="0.6"/>')
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=2)
result = chi2.run(0.1)
chi2._dump_tables()
assert result
def test11_chi2_aniso_lobe_trans(variant_packet_rgb):
from mitsuba.render import BSDFContext
xml = """
<float name="alpha_u" value="0.5"/>
<float name="alpha_v" value="0.2"/>
"""
wi = ek.normalize([-0.5, -0.5, 0.1])
ctx = BSDFContext()
ctx.component = 1
sample_func, pdf_func = BSDFAdapter("roughdielectric", xml, wi=wi, ctx=ctx)
chi2 = ChiSquareTest(domain=SphericalDomain(),
sample_func=sample_func,
pdf_func=pdf_func,
sample_dim=3,
res=201)
assert chi2.run()
def test06_chi2(variant_packet_rgb, md_type_name, alpha, sample_visible,
angle):
from mitsuba.python.chi2 import MicrofacetAdapter, ChiSquareTest, SphericalDomain
from mitsuba.render import MicrofacetType
if md_type_name == "GGX":
md_type = MicrofacetType.GGX
else:
md_type = MicrofacetType.Beckmann
sample_func, pdf_func = MicrofacetAdapter(md_type, alpha, sample_visible)
chi2 = ChiSquareTest(
domain=SphericalDomain(),
sample_func=lambda *args: sample_func(*(list(args) + [angle])),
pdf_func=lambda *args: pdf_func(*(list(args) + [angle])),
sample_dim=2,
ires=10)
assert chi2.run()
