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Switched from multiplication of base and subsurface color to blending

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between them using the subsurface parameter.
This commit is contained in:
Schoen
2017-03-30 15:32:55 +02:00
parent 482ec5d1f2
commit 013f4a152a
6 changed files with 8 additions and 15 deletions
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3
intern/cycles/kernel/closure/bssrdf.h
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@@ -29,7 +29,6 @@ typedef ccl_addr_space struct Bssrdf {
float albedo;
float roughness;
float3 N;
float3 base_color;
} Bssrdf;
/* Planar Truncated Gaussian
@@ -366,7 +365,7 @@ ccl_device int bssrdf_setup(Bssrdf *bssrdf, ClosureType type)
if(type == CLOSURE_BSSRDF_PRINCIPLED_ID) {
float roughness = bssrdf->roughness;
float3 N = bssrdf->N;
float3 weight = bssrdf->weight * bssrdf->base_color;
float3 weight = bssrdf->weight;
float sample_weight = bssrdf->sample_weight;
PrincipledDiffuseBsdf *bsdf = (PrincipledDiffuseBsdf*)bssrdf;

2
intern/cycles/kernel/kernel_subsurface.h
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@@ -150,7 +150,7 @@ ccl_device void subsurface_scatter_setup_diffuse_bsdf(ShaderData *sd, ShaderClos
if(hit) {
Bssrdf *bssrdf = (Bssrdf *)sc;
if(bssrdf->type == CLOSURE_BSSRDF_PRINCIPLED_ID) {
PrincipledDiffuseBsdf *bsdf = (PrincipledDiffuseBsdf*)bsdf_alloc(sd, sizeof(PrincipledDiffuseBsdf), weight * bssrdf->base_color);
PrincipledDiffuseBsdf *bsdf = (PrincipledDiffuseBsdf*)bsdf_alloc(sd, sizeof(PrincipledDiffuseBsdf), weight);
if(bsdf) {
bsdf->N = N;

6
intern/cycles/kernel/osl/osl_bssrdf.cpp
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@@ -80,7 +80,6 @@ public:
bssrdf->albedo = albedo.x;
bssrdf->sharpness = sharpness;
bssrdf->N = params.N;
bssrdf->base_color = params.base_color;
bssrdf->roughness = params.roughness;
ccl_fetch(sd, flag) |= bssrdf_setup(bssrdf, (ClosureType)type);
}
@@ -93,7 +92,6 @@ public:
bssrdf->albedo = albedo.y;
bssrdf->sharpness = sharpness;
bssrdf->N = params.N;
bssrdf->base_color = params.base_color;
bssrdf->roughness = params.roughness;
ccl_fetch(sd, flag) |= bssrdf_setup(bssrdf, (ClosureType)type);
}
@@ -106,7 +104,6 @@ public:
bssrdf->albedo = albedo.z;
bssrdf->sharpness = sharpness;
bssrdf->N = params.N;
bssrdf->base_color = params.base_color;
bssrdf->roughness = params.roughness;
ccl_fetch(sd, flag) |= bssrdf_setup(bssrdf, (ClosureType)type);
}
@@ -194,7 +191,7 @@ class PrincipledBSSRDFClosure : public CBSSRDFClosure {
public:
void setup(ShaderData *sd, int path_flag, float3 weight)
{
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_PRINCIPLED_ID);
alloc(sd, path_flag, weight * albedo, CLOSURE_BSSRDF_PRINCIPLED_ID);
}
};
@@ -204,7 +201,6 @@ ClosureParam *closure_bssrdf_principled_params()
CLOSURE_FLOAT3_PARAM(PrincipledBSSRDFClosure, params.N),
CLOSURE_FLOAT3_PARAM(PrincipledBSSRDFClosure, radius),
CLOSURE_FLOAT_PARAM(PrincipledBSSRDFClosure, params.texture_blur),
CLOSURE_FLOAT3_PARAM(PrincipledBSSRDFClosure, params.base_color),
CLOSURE_FLOAT3_PARAM(PrincipledBSSRDFClosure, albedo),
CLOSURE_FLOAT_PARAM(PrincipledBSSRDFClosure, params.roughness),
CLOSURE_STRING_KEYPARAM(PrincipledBSSRDFClosure, label, "label"),

3
intern/cycles/kernel/shaders/node_principled_bsdf.osl
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@@ -57,7 +57,8 @@ shader node_principled_bsdf(
if (diffuse_weight > 1e-5) {
if (Subsurface > 1e-5) {
BSDF = bssrdf_principled(Normal, Subsurface * SubsurfaceRadius, 0.0, BaseColor, SubsurfaceColor, Roughness);
color Albedo = SubsurfaceColor * Subsurface + BaseColor * (1.0 - Subsurface);
BSDF = bssrdf_principled(Normal, Subsurface * SubsurfaceRadius, 0.0, Albedo, Roughness);
} else {
BSDF = BaseColor * principled_diffuse(Normal, Roughness);
}

2
intern/cycles/kernel/shaders/stdosl.h
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@@ -552,7 +552,7 @@ closure color principled_clearcoat(normal N, float clearcoat, float clearcoat_gl
closure color bssrdf_cubic(normal N, vector radius, float texture_blur, float sharpness) BUILTIN;
closure color bssrdf_gaussian(normal N, vector radius, float texture_blur) BUILTIN;
closure color bssrdf_burley(normal N, vector radius, float texture_blur, color albedo) BUILTIN;
closure color bssrdf_principled(normal N, vector radius, float texture_blur, color base_color, color subsurface_color, float roughness) BUILTIN;
closure color bssrdf_principled(normal N, vector radius, float texture_blur, color subsurface_color, float roughness) BUILTIN;
// Hair
closure color hair_reflection(normal N, float roughnessu, float roughnessv, vector T, float offset) BUILTIN;

7
intern/cycles/kernel/svm/svm_closure.h
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@@ -140,8 +140,8 @@ ccl_device void svm_node_closure_bsdf(KernelGlobals *kg, ShaderData *sd, float *
float3 weight = ccl_fetch(sd, svm_closure_weight) * mix_weight;
#ifdef __SUBSURFACE__
float3 albedo = subsurface_color;
float3 subsurf_weight = weight * diffuse_weight;
float3 albedo = subsurface_color * subsurface + base_color * (1.0f - subsurface);
float3 subsurf_weight = weight * albedo * diffuse_weight;
float subsurf_sample_weight = fabsf(average(subsurf_weight));
/* disable in case of diffuse ancestor, can't see it well then and
@@ -183,7 +183,6 @@ ccl_device void svm_node_closure_bsdf(KernelGlobals *kg, ShaderData *sd, float *
bssrdf->albedo = albedo.x;
bssrdf->sharpness = sharpness;
bssrdf->N = N;
bssrdf->base_color = base_color;
bssrdf->roughness = roughness;
/* setup bsdf */
@@ -198,7 +197,6 @@ ccl_device void svm_node_closure_bsdf(KernelGlobals *kg, ShaderData *sd, float *
bssrdf->albedo = albedo.y;
bssrdf->sharpness = sharpness;
bssrdf->N = N;
bssrdf->base_color = base_color;
bssrdf->roughness = roughness;
/* setup bsdf */
@@ -213,7 +211,6 @@ ccl_device void svm_node_closure_bsdf(KernelGlobals *kg, ShaderData *sd, float *
bssrdf->albedo = albedo.z;
bssrdf->sharpness = sharpness;
bssrdf->N = N;
bssrdf->base_color = base_color;
bssrdf->roughness = roughness;
/* setup bsdf */