volume.h File Reference

#include "kernel/types.h"
#include "kernel/closure/volume_draine.h"
#include "kernel/closure/volume_fournier_forand.h"
#include "kernel/closure/volume_henyey_greenstein.h"
#include "kernel/closure/volume_rayleigh.h"

Go to the source code of this file.

Macros
#define	VOLUME_THROUGHPUT_EPSILON   1e-6f

Functions
CCL_NAMESPACE_BEGIN ccl_device void	volume_extinction_setup (ccl_private ShaderData *sd, Spectrum weight)
ccl_device Spectrum	volume_phase_eval (const ccl_private ShaderData *sd, const ccl_private ShaderVolumeClosure *svc, const float3 wo, ccl_private float *pdf)
ccl_device int	volume_phase_sample (const ccl_private ShaderData *sd, const ccl_private ShaderVolumeClosure *svc, const float2 rand, ccl_private Spectrum *eval, ccl_private float3 *wo, ccl_private float *pdf)
ccl_device bool	volume_phase_equal (const ccl_private ShaderClosure *c1, const ccl_private ShaderClosure *c2)
ccl_device float	volume_phase_get_g (const ccl_private ShaderVolumeClosure *svc)
ccl_device Spectrum	volume_color_transmittance (Spectrum sigma, const float t)
ccl_device float	volume_channel_get (Spectrum value, const int channel)
ccl_device_inline Spectrum	volume_sample_channel_pdf (Spectrum albedo, Spectrum throughput)
ccl_device int	volume_sample_channel (Spectrum albedo, Spectrum throughput, ccl_private float *rand, ccl_private Spectrum *pdf)

Macro Definition Documentation

VOLUME_THROUGHPUT_EPSILON

#define VOLUME_THROUGHPUT_EPSILON   1e-6f

Definition at line 132 of file kernel/closure/volume.h.

Function Documentation

volume_channel_get()

ccl_device float volume_channel_get	(	Spectrum	value,
		const int	channel )

Definition at line 139 of file kernel/closure/volume.h.

References ccl_device, and GET_SPECTRUM_CHANNEL.

volume_color_transmittance()

ccl_device Spectrum volume_color_transmittance	(	Spectrum	sigma,
		const float	t )

Definition at line 134 of file kernel/closure/volume.h.

References ccl_device, and exp.

volume_extinction_setup()

CCL_NAMESPACE_BEGIN ccl_device void volume_extinction_setup	(	ccl_private ShaderData *	sd,
		Spectrum	weight )

Definition at line 18 of file kernel/closure/volume.h.

References ccl_device, ccl_private, and SD_EXTINCTION.

Referenced by osl_closure_absorption_setup(), osl_closure_draine_setup(), osl_closure_fournier_forand_setup(), osl_closure_henyey_greenstein_setup(), osl_closure_rayleigh_setup(), svm_node_closure_volume(), svm_node_principled_volume(), and svm_node_volume_coefficients().

volume_phase_equal()

ccl_device bool volume_phase_equal	(	const ccl_private ShaderClosure *	c1,
		const ccl_private ShaderClosure *	c2 )

Definition at line 75 of file kernel/closure/volume.h.

References ccl_device, ccl_private, CLOSURE_VOLUME_DRAINE_ID, CLOSURE_VOLUME_FOURNIER_FORAND_ID, CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID, CLOSURE_VOLUME_RAYLEIGH_ID, and v2.

volume_phase_eval()

ccl_device Spectrum volume_phase_eval	(	const ccl_private ShaderData *	sd,
		const ccl_private ShaderVolumeClosure *	svc,
		const float3	wo,
		ccl_private float *	pdf )

Definition at line 31 of file kernel/closure/volume.h.

References ccl_device, ccl_private, CLOSURE_VOLUME_DRAINE_ID, CLOSURE_VOLUME_FOURNIER_FORAND_ID, CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID, CLOSURE_VOLUME_RAYLEIGH_ID, kernel_assert, volume_draine_eval(), volume_fournier_forand_eval(), volume_henyey_greenstein_eval(), volume_rayleigh_eval(), and zero_spectrum.

volume_phase_get_g()

ccl_device float volume_phase_get_g

(

const ccl_private ShaderVolumeClosure *

svc

)

Definition at line 107 of file kernel/closure/volume.h.

References ccl_device, ccl_private, CLOSURE_VOLUME_DRAINE_ID, CLOSURE_VOLUME_FOURNIER_FORAND_ID, CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID, and CLOSURE_VOLUME_RAYLEIGH_ID.

volume_phase_sample()

ccl_device int volume_phase_sample	(	const ccl_private ShaderData *	sd,
		const ccl_private ShaderVolumeClosure *	svc,
		const float2	rand,
		ccl_private Spectrum *	eval,
		ccl_private float3 *	wo,
		ccl_private float *	pdf )

Definition at line 52 of file kernel/closure/volume.h.

References ccl_device, ccl_private, CLOSURE_VOLUME_DRAINE_ID, CLOSURE_VOLUME_FOURNIER_FORAND_ID, CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID, CLOSURE_VOLUME_RAYLEIGH_ID, kernel_assert, volume_draine_sample(), volume_fournier_forand_sample(), volume_henyey_greenstein_sample(), and volume_rayleigh_sample().

volume_sample_channel()

ccl_device int volume_sample_channel	(	Spectrum	albedo,
		Spectrum	throughput,
		ccl_private float *	rand,
		ccl_private Spectrum *	pdf )

Definition at line 163 of file kernel/closure/volume.h.

References ccl_device, ccl_private, FOREACH_SPECTRUM_CHANNEL, GET_SPECTRUM_CHANNEL, i, SPECTRUM_CHANNELS, and volume_sample_channel_pdf().

volume_sample_channel_pdf()

ccl_device_inline Spectrum volume_sample_channel_pdf	(	Spectrum	albedo,
		Spectrum	throughput )

Definition at line 149 of file kernel/closure/volume.h.

References ccl_device_inline, fabs(), make_spectrum, reduce_add(), and SPECTRUM_CHANNELS.

Referenced by volume_sample_channel().