Differential D12367 Diff 41308 intern/cycles/kernel/closure/bsdf.h

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intern/cycles/kernel/closure/bsdf.h

/*		/*
* Copyright 2011-2013 Blender Foundation		* Copyright 2011-2013 Blender Foundation
*		*
* Licensed under the Apache License, Version 2.0 (the "License");		* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.		* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at		* You may obtain a copy of the License at
*		*
* http://www.apache.org/licenses/LICENSE-2.0		* http://www.apache.org/licenses/LICENSE-2.0
*		*
* Unless required by applicable law or agreed to in writing, software		* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,		* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and		* See the License for the specific language governing permissions and
* limitations under the License.		* limitations under the License.
*/		*/

		#pragma once

// clang-format off		// clang-format off
#include "kernel/closure/bsdf_ashikhmin_velvet.h"		#include "kernel/closure/bsdf_ashikhmin_velvet.h"
#include "kernel/closure/bsdf_diffuse.h"		#include "kernel/closure/bsdf_diffuse.h"
#include "kernel/closure/bsdf_oren_nayar.h"		#include "kernel/closure/bsdf_oren_nayar.h"
#include "kernel/closure/bsdf_phong_ramp.h"		#include "kernel/closure/bsdf_phong_ramp.h"
#include "kernel/closure/bsdf_diffuse_ramp.h"		#include "kernel/closure/bsdf_diffuse_ramp.h"
#include "kernel/closure/bsdf_microfacet.h"		#include "kernel/closure/bsdf_microfacet.h"
#include "kernel/closure/bsdf_microfacet_multi.h"		#include "kernel/closure/bsdf_microfacet_multi.h"
▲ Show 20 Lines • Show All 79 Lines • ▼ Show 20 Lines
{		{
cos_in = min(cos_in, 1.0f);		cos_in = min(cos_in, 1.0f);

const float angle = fast_acosf(cos_in);		const float angle = fast_acosf(cos_in);
const float val = max(cosf(angle * frequency_multiplier), 0.0f) / cos_in;		const float val = max(cosf(angle * frequency_multiplier), 0.0f) / cos_in;
return val;		return val;
}		}

ccl_device_inline int bsdf_sample(KernelGlobals *kg,		ccl_device_inline int bsdf_sample(const KernelGlobals *kg,
ShaderData *sd,		ShaderData *sd,
const ShaderClosure *sc,		const ShaderClosure *sc,
float randu,		float randu,
float randv,		float randv,
float3 *eval,		float3 *eval,
float3 *omega_in,		float3 *omega_in,
differential3 *domega_in,		differential3 *domega_in,
float *pdf)		float *pdf)
▲ Show 20 Lines • Show All 303 Lines • ▼ Show 20 Lines	case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
eval,		eval,
omega_in,		omega_in,
&domega_in->dx,		&domega_in->dx,
&domega_in->dy,		&domega_in->dy,
pdf);		pdf);
break;		break;
# endif /* __PRINCIPLED__ */		# endif /* __PRINCIPLED__ */
#endif		#endif
#ifdef __VOLUME__
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
label = volume_henyey_greenstein_sample(sc,
sd->I,
sd->dI.dx,
sd->dI.dy,
randu,
randv,
eval,
omega_in,
&domega_in->dx,
&domega_in->dy,
pdf);
break;
#endif
default:		default:
label = LABEL_NONE;		label = LABEL_NONE;
break;		break;
}		}

/* Test if BSDF sample should be treated as transparent for background. */		/* Test if BSDF sample should be treated as transparent for background. */
if (label & LABEL_TRANSMIT) {		if (label & LABEL_TRANSMIT) {
float threshold_squared = kernel_data.background.transparent_roughness_squared_threshold;		float threshold_squared = kernel_data.background.transparent_roughness_squared_threshold;
Show All 22 Lines
}		}

#ifndef __KERNEL_CUDA__		#ifndef __KERNEL_CUDA__
ccl_device		ccl_device
#else		#else
ccl_device_inline		ccl_device_inline
#endif		#endif
float3		float3
bsdf_eval(KernelGlobals *kg,		bsdf_eval(const KernelGlobals *kg,
ShaderData *sd,		ShaderData *sd,
const ShaderClosure *sc,		const ShaderClosure *sc,
const float3 omega_in,		const float3 omega_in,
		const bool is_transmission,
float *pdf)		float *pdf)
{		{
float3 eval;		float3 eval = zero_float3();

if (dot(sd->N, omega_in) >= 0.0f) {		if (!is_transmission) {
switch (sc->type) {		switch (sc->type) {
case CLOSURE_BSDF_DIFFUSE_ID:		case CLOSURE_BSDF_DIFFUSE_ID:
case CLOSURE_BSDF_BSSRDF_ID:		case CLOSURE_BSDF_BSSRDF_ID:
eval = bsdf_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);		eval = bsdf_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);
break;		break;
#ifdef __SVM__		#ifdef __SVM__
case CLOSURE_BSDF_OREN_NAYAR_ID:		case CLOSURE_BSDF_OREN_NAYAR_ID:
eval = bsdf_oren_nayar_eval_reflect(sc, sd->I, omega_in, pdf);		eval = bsdf_oren_nayar_eval_reflect(sc, sd->I, omega_in, pdf);
▲ Show 20 Lines • Show All 63 Lines • ▼ Show 20 Lines	# ifdef __PRINCIPLED__
case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:		case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
eval = bsdf_principled_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);		eval = bsdf_principled_diffuse_eval_reflect(sc, sd->I, omega_in, pdf);
break;		break;
case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:		case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
eval = bsdf_principled_sheen_eval_reflect(sc, sd->I, omega_in, pdf);		eval = bsdf_principled_sheen_eval_reflect(sc, sd->I, omega_in, pdf);
break;		break;
# endif /* __PRINCIPLED__ */		# endif /* __PRINCIPLED__ */
#endif		#endif
#ifdef __VOLUME__
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
eval = volume_henyey_greenstein_eval_phase(sc, sd->I, omega_in, pdf);
break;
#endif
default:		default:
eval = make_float3(0.0f, 0.0f, 0.0f);
break;		break;
}		}
if (CLOSURE_IS_BSDF_DIFFUSE(sc->type)) {		if (CLOSURE_IS_BSDF_DIFFUSE(sc->type)) {
if (!isequal_float3(sc->N, sd->N)) {		if (!isequal_float3(sc->N, sd->N)) {
eval *= bump_shadowing_term(sd->N, sc->N, omega_in);		eval *= bump_shadowing_term(sd->N, sc->N, omega_in);
}		}
}		}
/* Shadow terminator offset. */		/* Shadow terminator offset. */
▲ Show 20 Lines • Show All 70 Lines • ▼ Show 20 Lines	# ifdef __PRINCIPLED__
case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:		case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
eval = bsdf_principled_diffuse_eval_transmit(sc, sd->I, omega_in, pdf);		eval = bsdf_principled_diffuse_eval_transmit(sc, sd->I, omega_in, pdf);
break;		break;
case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:		case CLOSURE_BSDF_PRINCIPLED_SHEEN_ID:
eval = bsdf_principled_sheen_eval_transmit(sc, sd->I, omega_in, pdf);		eval = bsdf_principled_sheen_eval_transmit(sc, sd->I, omega_in, pdf);
break;		break;
# endif /* __PRINCIPLED__ */		# endif /* __PRINCIPLED__ */
#endif		#endif
#ifdef __VOLUME__
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
eval = volume_henyey_greenstein_eval_phase(sc, sd->I, omega_in, pdf);
break;
#endif
default:		default:
eval = make_float3(0.0f, 0.0f, 0.0f);
break;		break;
}		}
if (CLOSURE_IS_BSDF_DIFFUSE(sc->type)) {		if (CLOSURE_IS_BSDF_DIFFUSE(sc->type)) {
if (!isequal_float3(sc->N, sd->N)) {		if (!isequal_float3(sc->N, sd->N)) {
eval *= bump_shadowing_term(-sd->N, sc->N, omega_in);		eval *= bump_shadowing_term(-sd->N, sc->N, omega_in);
}		}
}		}
}		}

return eval;		return eval;
}		}

ccl_device void bsdf_blur(KernelGlobals kg, ShaderClosure sc, float roughness)		ccl_device void bsdf_blur(const KernelGlobals kg, ShaderClosure sc, float roughness)
{		{
/* ToDo: do we want to blur volume closures? */		/* ToDo: do we want to blur volume closures? */
#ifdef __SVM__		#ifdef __SVM__
switch (sc->type) {		switch (sc->type) {
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID:		case CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:		case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:		case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:		case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
Show All 16 Lines	case CLOSURE_BSDF_HAIR_PRINCIPLED_ID:
bsdf_principled_hair_blur(sc, roughness);		bsdf_principled_hair_blur(sc, roughness);
break;		break;
default:		default:
break;		break;
}		}
#endif		#endif
}		}

ccl_device bool bsdf_merge(ShaderClosure a, ShaderClosure b)
{
#ifdef __SVM__
switch (a->type) {
case CLOSURE_BSDF_TRANSPARENT_ID:
return true;
case CLOSURE_BSDF_DIFFUSE_ID:
case CLOSURE_BSDF_BSSRDF_ID:
case CLOSURE_BSDF_TRANSLUCENT_ID:
return bsdf_diffuse_merge(a, b);
case CLOSURE_BSDF_OREN_NAYAR_ID:
return bsdf_oren_nayar_merge(a, b);
case CLOSURE_BSDF_REFLECTION_ID:
case CLOSURE_BSDF_REFRACTION_ID:
case CLOSURE_BSDF_MICROFACET_GGX_ID:
case CLOSURE_BSDF_MICROFACET_GGX_FRESNEL_ID:
case CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID:
case CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID:
case CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID:
case CLOSURE_BSDF_MICROFACET_BECKMANN_ID:
case CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID:
case CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID:
return bsdf_microfacet_merge(a, b);
case CLOSURE_BSDF_ASHIKHMIN_VELVET_ID:
return bsdf_ashikhmin_velvet_merge(a, b);
case CLOSURE_BSDF_DIFFUSE_TOON_ID:
case CLOSURE_BSDF_GLOSSY_TOON_ID:
return bsdf_toon_merge(a, b);
case CLOSURE_BSDF_HAIR_REFLECTION_ID:
case CLOSURE_BSDF_HAIR_TRANSMISSION_ID:
return bsdf_hair_merge(a, b);
# ifdef __PRINCIPLED__
case CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID:
case CLOSURE_BSDF_BSSRDF_PRINCIPLED_ID:
return bsdf_principled_diffuse_merge(a, b);
# endif
# ifdef __VOLUME__
case CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID:
return volume_henyey_greenstein_merge(a, b);
# endif
default:
return false;
}
#else
return false;
#endif
}

CCL_NAMESPACE_END		CCL_NAMESPACE_END