reinsteam

Atmosphere / Clouds Rendering

A fast, simple method to render sky color using gradients maps [[Abad06]]
A Framework for the Experimental Comparison of Solar and Skydome Illumination [[Kider14]]
A Method for Modeling Clouds based on Atmospheric Fluid Dynamics [[Miyazaki01]]
A Physically-Based Night Sky Model [[Jensen01]]

[1983. Peter Burt and Edward Adelson. The Laplacian Pyramid as a Compact Image Code][1]
[1993. Scott Daly. The visible differences predictor: an algorithm for the assessment of image fidelity][2]
[1995. Andrew S. Glassner. In Principles of digital image synthesis, pages 59-66][3]
[1997. Gregory Ward-Larson, Holly Rushmeier, and Christine Piatko. A visibility matching tone reproduction operator for high dynamic range scenes][4]
[1999. Mahesh Ramasubramanian, Sumant N. Pattnaik, Donald P. Greenberg. A perceptually based physical error metric for realistic image synthesis][5]
[2004. Yangli Hector Yee, Anna Newman. A perceptual metric for production Testing][6]
[2004. HECTOR YEE, SUMANTA PATTANAIK and DONALD P. GREENBERG. Spatiotemporal Sensitivity and Visual Attention for Efficient Rendering of Dynamic Environments][7]
[2004. Hector Yee. *A Perceptual Metric for Production Testing (Submitted and Accepted in Journal of

	// maximum relative error : 2.38418579e-07
	const float exp2_c0 = 0.999999930f;
	const float exp2_c1 = 0.693153100f;
	const float exp2_c2 = 0.240153617f;
	const float exp2_c3 = 0.055826318f;
	const float exp2_c4 = 0.008989340f;
	const float exp2_c5 = 0.0018775767f;

	inline float exp2_zero_one_range(float x)
	{

	uint ReadSlotId(uint LaneId, uint mask0, uint mask1)
	{
	return LaneId & (0x20 \| mask0) \| mask1;
	}

	void LdsBarrier() {}

	groupshared float Scratch[64];

	float PrefixSum64(uint LaneId, float x)

	float Min3(float a, float b, float c)
	{
	return min(a, min(b, c));
	}

	float Max3(float a, float b, float c)
	{
	return max(a, max(b, c));
	}

	local msvc_config =
	{
	Env = {
	CCOPTS = {
	"/Wall", "/WL", "/GR-", "/EHs-c-", "/analyze", '/FA', '/TC',
	"/Zl", "/Za",
	{ "/O2", "/GL", "/GS-", "/Gw"; Config = "-vs-release" },
	{ "/Od", "/GL-", "/GS", "/RTCcsu"; Config = "-vs-debug" },
	},
	LIBS = {

	using UnityEngine;

	public class PreviewTexture2D : PropertyAttribute
	{
	public PreviewTexture2D()
	{ }
	}

	#pragma warning (push)
	/* 4820: '<struct-name>' : 'n' bytes padding added after data member '<member-name>'*/
	# pragma warning (disable : 4820)
	# pragma warning (disable : 4255 4668)
	# include <windows.h>
	# include <stdio.h>
	#pragma warning (pop)

	typedef unsigned u32;