def atest_material_glass(self):
sam_mgr = SampledManager()
register_rgb_shadepoint()
runtimes = [Runtime()]
mat = Material()
mat.load('glass', sam_mgr, spectral=False)
mat.set_value('ior', 1.5)
mgr = MaterialManager()
mgr.add('material1', mat)
shaders = shaders_functions()
for shader in shaders:
shader.compile()
shader.prepare(runtimes)
mgr.compile_shaders(sam_mgr, spectral=False, shaders=shaders)
mgr.prepare_shaders(runtimes)
code = """
hp = HitPoint()
hp.normal = normal
sp = ShadePoint()
sp.wo = wo
material_sampling(hp, sp, 0)
pdf = sp.pdf
wi = sp.wi
spec = sp.material_reflectance
"""
pdf = FloatArg('pdf', 0.0)
wi = Vec3Arg('wi', Vector3(0.0, 0.0, 0.0))
ww = Vector3(5.0, 1.0, 0.0)
ww.normalize()
wo = Vec3Arg('wo', ww)
nn = Vector3(0.0, 1.0, 0.0)
nn.normalize()
normal = Vec3Arg('normal', nn)
spec = RGBArg('spec', RGBSpectrum(0.5, 0.5, 0.5))
shader = Shader(code=code, args=[pdf, wi, wo, normal, spec])
shader.compile(shaders=[mgr.sampling_shader])
shader.prepare(runtimes)
shader.execute()
s = shader.get_value('wi')
print(s)
s = shader.get_value('pdf')
print(s)
s = shader.get_value('spec')
print(s)
print('------------------------------')
print('wo', ww)
wi, pdf, ref = sampling_glass(1.5, ww, nn)
print("wi", wi)
print("pdf", pdf)
print("ref", ref)
ndotwi = abs(nn.dot(wi))
print("ndotwi", ndotwi)
tmp = ndotwi / pdf
path_weight = ref * tmp
print("path weight", path_weight)
def atest_material_glass(self):
sam_mgr = SampledManager()
register_rgb_shadepoint()
runtimes = [Runtime()]
mat = Material()
mat.load('glass', sam_mgr, spectral=False)
mat.set_value('ior', 1.5)
mgr = MaterialManager()
mgr.add('material1', mat)
shaders = shaders_functions()
for shader in shaders:
shader.compile()
shader.prepare(runtimes)
mgr.compile_shaders(sam_mgr, spectral=False, shaders=shaders)
mgr.prepare_shaders(runtimes)
code = """
hp = HitPoint()
hp.normal = normal
sp = ShadePoint()
sp.wo = wo
material_sampling(hp, sp, 0)
pdf = sp.pdf
wi = sp.wi
spec = sp.material_reflectance
"""
pdf = FloatArg('pdf', 0.0)
wi = Vec3Arg('wi', Vector3(0.0, 0.0, 0.0))
ww = Vector3(5.0, 1.0, 0.0)
ww.normalize()
wo = Vec3Arg('wo', ww)
nn = Vector3(0.0, 1.0, 0.0)
nn.normalize()
normal = Vec3Arg('normal', nn)
spec = RGBArg('spec', RGBSpectrum(0.5, 0.5, 0.5))
shader = Shader(code=code, args=[pdf, wi, wo, normal, spec])
shader.compile(shaders=[mgr.sampling_shader])
shader.prepare(runtimes)
shader.execute()
s = shader.get_value('wi')
print(s)
s = shader.get_value('pdf')
print(s)
s = shader.get_value('spec')
print(s)
print('------------------------------')
print('wo', ww)
wi, pdf, ref = sampling_glass(1.5, ww, nn)
print("wi", wi)
print("pdf", pdf)
print("ref", ref)
ndotwi = abs(nn.dot(wi))
print("ndotwi", ndotwi)
tmp = ndotwi / pdf
path_weight = ref * tmp
print("path weight", path_weight)
import unittest
import math
import random
from tdasm import Runtime
from renlgt.material import Material, MaterialManager
from renlgt.shadepoint import register_rgb_shadepoint
from sdl import Shader, SampledManager, RGBSpectrum, RGBArg,\
FloatArg, Vec3Arg, Vector3
from renlgt.shader_lib import shaders_functions
shaders_functions()
def cos_hemisphere(r1, r2, normal, e=1.0):
phi = 2.0 * 3.14159 * r1
exponent = 1.0 / (e + 1.0)
cos_theta = pow(r2, exponent)
tmp = 1.0 - cos_theta * cos_theta
sin_theta = math.sqrt(tmp)
sin_phi = math.sin(phi)
cos_phi = math.cos(phi)
pu = sin_theta * cos_phi
pv = sin_theta * sin_phi
pw = cos_theta
w = normal
tv = Vector3(0.0034, 1.0, 0.0071)
v = tv.cross(w)
v.normalize()
import unittest
import math
import random
from tdasm import Runtime
from renlgt.material import Material, MaterialManager
from renlgt.shadepoint import register_rgb_shadepoint
from sdl import Shader, SampledManager, RGBSpectrum, RGBArg,\
FloatArg, Vec3Arg, Vector3
from renlgt.shader_lib import shaders_functions
shaders_functions()
def cos_hemisphere(r1, r2, normal, e=1.0):
phi = 2.0 * 3.14159 * r1
exponent = 1.0 / (e + 1.0)
cos_theta = pow(r2, exponent)
tmp = 1.0 - cos_theta * cos_theta
sin_theta = math.sqrt(tmp)
sin_phi = math.sin(phi)
cos_phi = math.cos(phi)
pu = sin_theta * cos_phi
pv = sin_theta * sin_phi
pw = cos_theta
w = normal
tv = Vector3(0.0034, 1.0, 0.0071)
v = tv.cross(w)
v.normalize()
