Differential D2385 Diff 7898 intern/cycles/kernel/kernel_random.h

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intern/cycles/kernel/kernel_random.h

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	#else			#else
	/* compute sobol sequence value using direction vectors */			/* compute sobol sequence value using direction vectors */
	uint result = sobol_dimension(kg, sample + SOBOL_SKIP, dimension);			uint result = sobol_dimension(kg, sample + SOBOL_SKIP, dimension);
	float r = (float)result * (1.0f/(float)0xFFFFFFFF);			float r = (float)result * (1.0f/(float)0xFFFFFFFF);

	/* Cranly-Patterson rotation using rng seed */			/* Cranly-Patterson rotation using rng seed */
	float shift;			float shift;

	/* using the same *rng value to offset seems to give correlation issues,			/* Hash rng with dimension to solve correlation issues.
	* we could hash it with the dimension but this has a performance impact,			* See T38710, T50116.
	* we need to find a solution for this */			*/
	if(dimension & 1)			RNG tmp_rng = cmj_hash_simple(dimension, tmp_rng);
				lukasstockner97Unsubmitted Not Done Inline Actions This seems weird, you use the i uninitialized tmp_rng to initialize itself. I guess you meant cmj_hash_simple(dimension,rng)? lukasstockner97:* This seems weird, you use the i uninitialized tmp_rng to initialize itself. I guess you meant…
				sergeyAuthorUnsubmitted Not Done Inline Actions Ah, last minute optimization which for some reason was not visible at the renders =\ Good spot! sergey: Ah, last minute optimization which for some reason was not visible at the renders =\ Good spot!
	shift = (rng >> 16) (1.0f/(float)0xFFFF);			shift = tmp_rng * (1.0f/(float)0xFFFFFFFF);
	else
	shift = (rng & 0xFFFF) (1.0f/(float)0xFFFF);

	return r + shift - floorf(r + shift);			return r + shift - floorf(r + shift);
	#endif			#endif
	}			}

	ccl_device_forceinline void path_rng_2D(KernelGlobals kg, ccl_addr_space RNG rng, int sample, int num_samples, int dimension, float fx, float fy)			ccl_device_forceinline void path_rng_2D(KernelGlobals kg, ccl_addr_space RNG rng, int sample, int num_samples, int dimension, float fx, float fy)
	{			{
	#ifdef __CMJ__			#ifdef __CMJ__
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