kernel_random.h File Reference

#include "kernel/kernel_jitter.h"
#include "util/util_hash.h"

Go to the source code of this file.

Functions
CCL_NAMESPACE_BEGIN ccl_device_forceinline float	path_rng_1D (KernelGlobals *kg, uint rng_hash, int sample, int num_samples, int dimension)
ccl_device_forceinline void	path_rng_2D (KernelGlobals *kg, uint rng_hash, int sample, int num_samples, int dimension, float *fx, float *fy)
ccl_device_inline void	path_rng_init (KernelGlobals *kg, int sample, int num_samples, uint *rng_hash, int x, int y, float *fx, float *fy)
ccl_device uint	lcg_step_uint (uint *rng)
ccl_device float	lcg_step_float (uint *rng)
ccl_device uint	lcg_init (uint seed)
ccl_device_inline float	path_state_rng_1D (KernelGlobals *kg, const ccl_addr_space PathState *state, int dimension)
ccl_device_inline void	path_state_rng_2D (KernelGlobals *kg, const ccl_addr_space PathState *state, int dimension, float *fx, float *fy)
ccl_device_inline float	path_state_rng_1D_hash (KernelGlobals *kg, const ccl_addr_space PathState *state, uint hash)
ccl_device_inline float	path_branched_rng_1D (KernelGlobals *kg, uint rng_hash, const ccl_addr_space PathState *state, int branch, int num_branches, int dimension)
ccl_device_inline void	path_branched_rng_2D (KernelGlobals *kg, uint rng_hash, const ccl_addr_space PathState *state, int branch, int num_branches, int dimension, float *fx, float *fy)
ccl_device_inline float	path_state_rng_light_termination (KernelGlobals *kg, const ccl_addr_space PathState *state)
ccl_device_inline float	path_branched_rng_light_termination (KernelGlobals *kg, uint rng_hash, const ccl_addr_space PathState *state, int branch, int num_branches)
ccl_device_inline uint	lcg_state_init (PathState *state, uint scramble)
ccl_device_inline uint	lcg_state_init_addrspace (ccl_addr_space PathState *state, uint scramble)
ccl_device float	lcg_step_float_addrspace (ccl_addr_space uint *rng)
ccl_device_inline bool	sample_is_even (int pattern, int sample)

Function Documentation

lcg_init()

ccl_device uint lcg_init

(

uint

seed

)

Definition at line 171 of file kernel_random.h.

References lcg_step_uint(), and seed.

Referenced by lcg_state_init(), and lcg_state_init_addrspace().

lcg_state_init()

ccl_device_inline uint lcg_state_init	(	PathState *	state,
		uint	scramble
	)

Definition at line 277 of file kernel_random.h.

References lcg_init(), and state.

lcg_state_init_addrspace()

ccl_device_inline uint lcg_state_init_addrspace	(	ccl_addr_space PathState *	state,
		uint	scramble
	)

Definition at line 282 of file kernel_random.h.

References lcg_init(), and state.

Referenced by shader_eval_surface().

lcg_step_float()

ccl_device float lcg_step_float

(

uint *

rng

)

Definition at line 164 of file kernel_random.h.

References float().

lcg_step_float_addrspace()

ccl_device float lcg_step_float_addrspace

(

ccl_addr_space uint *

rng

)

Definition at line 287 of file kernel_random.h.

References float().

Referenced by bsdf_principled_hair_sample(), mf_eval(), and mf_sample().

lcg_step_uint()

ccl_device uint lcg_step_uint

(

uint *

rng

)

Definition at line 157 of file kernel_random.h.

Referenced by lcg_init().

path_branched_rng_1D()

ccl_device_inline float path_branched_rng_1D	(	KernelGlobals *	kg,
		uint	rng_hash,
		const ccl_addr_space PathState *	state,
		int	branch,
		int	num_branches,
		int	dimension
	)

Definition at line 221 of file kernel_random.h.

References kg, path_rng_1D(), and state.

Referenced by path_branched_rng_light_termination().

path_branched_rng_2D()

ccl_device_inline void path_branched_rng_2D	(	KernelGlobals *	kg,
		uint	rng_hash,
		const ccl_addr_space PathState *	state,
		int	branch,
		int	num_branches,
		int	dimension,
		float *	fx,
		float *	fy
	)

Definition at line 235 of file kernel_random.h.

References kg, path_rng_2D(), and state.

path_branched_rng_light_termination()

ccl_device_inline float path_branched_rng_light_termination	(	KernelGlobals *	kg,
		uint	rng_hash,
		const ccl_addr_space PathState *	state,
		int	branch,
		int	num_branches
	)

Definition at line 265 of file kernel_random.h.

References kernel_data, kg, path_branched_rng_1D(), PRNG_LIGHT_TERMINATE, and state.

path_rng_1D()

CCL_NAMESPACE_BEGIN ccl_device_forceinline float path_rng_1D	(	KernelGlobals *	kg,
		uint	rng_hash,
		int	sample,
		int	num_samples,
		int	dimension
	)

Definition at line 53 of file kernel_random.h.

References cmj_hash_simple(), float(), floorf, kernel_data, kg, pmj_sample_1D(), r, result, blender::compositor::sample(), SAMPLING_PATTERN_CMJ, and SAMPLING_PATTERN_PMJ.

Referenced by kernel_path_trace_setup(), path_branched_rng_1D(), path_rng_2D(), path_state_rng_1D(), and path_state_rng_1D_hash().

path_rng_2D()

ccl_device_forceinline void path_rng_2D	(	KernelGlobals *	kg,
		uint	rng_hash,
		int	sample,
		int	num_samples,
		int	dimension,
		float *	fx,
		float *	fy
	)

Definition at line 91 of file kernel_random.h.

References float(), kernel_data, kg, path_rng_1D(), pmj_sample_2D(), blender::compositor::sample(), SAMPLING_PATTERN_CMJ, SAMPLING_PATTERN_PMJ, float2::x, and float2::y.

Referenced by kernel_path_trace_setup(), path_branched_rng_2D(), path_rng_init(), and path_state_rng_2D().

path_rng_init()

ccl_device_inline void path_rng_init	(	KernelGlobals *	kg,
		int	sample,
		int	num_samples,
		uint *	rng_hash,
		int	x,
		int	y,
		float *	fx,
		float *	fy
	)

Definition at line 129 of file kernel_random.h.

References hash_uint2(), kernel_data, kg, path_rng_2D(), PRNG_FILTER_U, blender::compositor::sample(), x, and y.

Referenced by kernel_path_trace_setup().

path_state_rng_1D()

ccl_device_inline float path_state_rng_1D	(	KernelGlobals *	kg,
		const ccl_addr_space PathState *	state,
		int	dimension
	)

Definition at line 187 of file kernel_random.h.

References kg, path_rng_1D(), and state.

Referenced by kernel_holdout_emission_blurring_pathtermination_ao(), kernel_path_integrate(), path_state_rng_light_termination(), and subsurface_random_walk().

path_state_rng_1D_hash()

ccl_device_inline float path_state_rng_1D_hash	(	KernelGlobals *	kg,
		const ccl_addr_space PathState *	state,
		uint	hash
	)

Definition at line 207 of file kernel_random.h.

References cmj_hash_simple(), hash, kg, path_rng_1D(), and state.

path_state_rng_2D()

ccl_device_inline void path_state_rng_2D	(	KernelGlobals *	kg,
		const ccl_addr_space PathState *	state,
		int	dimension,
		float *	fx,
		float *	fy
	)

Definition at line 195 of file kernel_random.h.

References kg, path_rng_2D(), and state.

Referenced by kernel_direct_lighting(), kernel_path_ao(), kernel_path_surface_bounce(), kernel_path_surface_connect_light(), and subsurface_random_walk().

path_state_rng_light_termination()

ccl_device_inline float path_state_rng_light_termination	(	KernelGlobals *	kg,
		const ccl_addr_space PathState *	state
	)

Definition at line 256 of file kernel_random.h.

References kernel_data, kg, path_state_rng_1D(), PRNG_LIGHT_TERMINATE, and state.

Referenced by kernel_direct_lighting(), and kernel_path_surface_connect_light().

sample_is_even()

ccl_device_inline bool sample_is_even	(	int	pattern,
		int	sample
	)

Definition at line 294 of file kernel_random.h.

References blender::compositor::sample(), and SAMPLING_PATTERN_PMJ.

Referenced by kernel_write_result().