1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "Metal.ih"
#include "math/spectrum.ih"
#include "render/Material.ih"
#include "render/bsdfs/Conductor.ih"
#include "render/bsdfs/MicrofacetConductor.ih"
#include "texture/TextureParam.ih"
// c++ shared
#include "MetalShared.h"
///////////////////////////////////////////////////////////////////////////////
// Implementation
OSPRAY_BEGIN_ISPC_NAMESPACE
SYCL_EXTERNAL const varying BSDF *uniform Metal_getBSDF(
const uniform Material *uniform super,
uniform ShadingContext *uniform ctx,
const DifferentialGeometry &dg,
const Ray &,
const Medium &,
const uniform FeatureFlagsHandler &)
{
const uniform Metal *uniform self = (const uniform Metal *uniform)super;
varying linear3f *uniform shadingframe =
LinearSpace3f_create(ctx, frame(dg.Ns));
Fresnel *uniform fresnel;
if (self->spectral)
fresnel = FresnelConductorSpectral_create(ctx, self->eta, self->k);
else
fresnel = FresnelConductorRGBUniform_create(ctx, self->etaRGB, self->kRGB);
varying BSDF *uniform bsdf;
if (self->roughness == 0.0f) {
bsdf = Conductor_create(ctx, shadingframe, fresnel);
bsdf->bsdfType = BSDF_TYPE_METAL;
} else {
bsdf = MicrofacetConductor_create(ctx,
super->microfacetAlbedoTables,
shadingframe,
fresnel,
self->roughness * get1f(self->roughnessMap, dg, 1.f),
0.f);
bsdf->bsdfType = BSDF_TYPE_METAL_ROUGH;
}
return bsdf;
}
SYCL_EXTERNAL BSDF_EvalRes MetalRough_BSDF_eval(
const varying BSDF *uniform super, const vec3f &wo, const vec3f &wi)
{
return MicrofacetConductor_eval(
(const varying MicrofacetConductor *uniform)super, wo, wi);
}
SYCL_EXTERNAL BSDF_SampleRes MetalRough_BSDF_sample(
const varying BSDF *uniform super,
const vec3f &wo,
const vec2f &s,
float ss)
{
return MicrofacetConductor_sample(
(const varying MicrofacetConductor *uniform)super, wo, s, ss);
}
SYCL_EXTERNAL BSDF_SampleRes Metal_BSDF_sample(
const varying BSDF *uniform super,
const vec3f &wo,
const vec2f &s,
float ss)
{
return Conductor_sample(super, wo, s, ss);
}
///////////////////////////////////////////////////////////////////////////////
// External API
export void *uniform Metal_getBSDF_addr()
{
return (void *uniform)Metal_getBSDF;
}
OSPRAY_END_ISPC_NAMESPACE
|
