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Assume the default shader has already been loaded

/main
Evgenii Golubev 8 年前
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76e17740
共有 1 个文件被更改，包括 57 次插入 和 69 次删除
  1. 126
      Assets/ScriptableRenderLoop/HDRenderLoop/Sky/AtmosphericParameters.cs

126
Assets/ScriptableRenderLoop/HDRenderLoop/Sky/AtmosphericParameters.cs
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[ExecuteInEditMode]
public class AtmosphericParameters : MonoBehaviour
{
// public enum OcclusionDownscale { x1 = 1, x2 = 2, x4 = 4 }
// public enum OcclusionSamples { x64 = 0, x164 = 1, x244 = 2 }
// public enum DepthTexture { Enable, Disable, Ignore }
public enum ScatterDebugMode { None, Scattering, Occlusion, OccludedScattering, Rayleigh, Mie, Height }
public enum OcclusionDownscale { x1 = 1, x2 = 2, x4 = 4 }
public enum OcclusionSamples { x64 = 0, x164 = 1, x244 = 2 }
public enum DepthTexture { Enable, Disable/*, Ignore*/ } // 'Ignore' appears to be currently unused.
public enum ScatterDebugMode { None, Scattering, Occlusion, OccludedScattering, Rayleigh, Mie, Height }
[Header("Global Settings")]
public Gradient worldRayleighColorRamp = null;

public float heightNormalDistance = 1000f;
[Header("Sky Dome")]
/*public*/ Vector3 skyDomeScale = new Vector3(1f, 1f, 1f);
/*public*/ Vector3 skyDomeRotation = Vector3.zero;
/*public*/ Transform skyDomeTrackedYawRotation = null;
/*public*/ bool skyDomeVerticalFlip = false;
/*public*/ Cubemap skyDomeCube = null;
/*public*/ float skyDomeExposure = 1f;
/*public*/ Color skyDomeTint = Color.white;
/*public*/ Vector3 skyDomeOffset = Vector3.zero;
/*public*/ Vector3 skyDomeScale = new Vector3(1f, 1f, 1f);
/*public*/ Vector3 skyDomeRotation = Vector3.zero;
/*public*/ Transform skyDomeTrackedYawRotation = null;
/*public*/ bool skyDomeVerticalFlip = false;
/*public*/ Cubemap skyDomeCube = null;
/*public*/ float skyDomeExposure = 1f;
/*public*/ Color skyDomeTint = Color.white;
/*public*/ Vector3 skyDomeOffset = Vector3.zero;
// [Header("Scatter Occlusion")]
// public bool useOcclusion = false;
// public float occlusionBias = 0f;
// public float occlusionBiasIndirect = 0.6f;
// public float occlusionBiasClouds = 0.3f;
// public OcclusionDownscale occlusionDownscale = OcclusionDownscale.x2;
// public OcclusionSamples occlusionSamples = OcclusionSamples.x64;
// public bool occlusionDepthFixup = true;
// public float occlusionDepthThreshold = 25f;
// public bool occlusionFullSky = false;
// public float occlusionBiasSkyRayleigh= 0.2f;
// public float occlusionBiasSkyMie = 0.4f;
/*
[Header("Scatter Occlusion")]
public bool useOcclusion = false;
public float occlusionBias = 0f;
public float occlusionBiasIndirect = 0.6f;
public float occlusionBiasClouds = 0.3f;
public OcclusionDownscale occlusionDownscale = OcclusionDownscale.x2;
public OcclusionSamples occlusionSamples = OcclusionSamples.x64;
public bool occlusionDepthFixup = true;
public float occlusionDepthThreshold = 25f;
public bool occlusionFullSky = false;
public float occlusionBiasSkyRayleigh = 0.2f;
public float occlusionBiasSkyMie = 0.4f;
*/
public float worldScaleExponent = 1.0f;
// public bool forcePerPixel = true;
// public bool forcePostEffect = true;
public Shader atmosphericShader = null;
// public Shader occlusionShader = null;
// [Tooltip("Soft clouds need depth values. Ignore means externally controlled.")]
// public DepthTexture depthTexture = DepthTexture.Enable;
public ScatterDebugMode debugMode = ScatterDebugMode.None;
public Shader atmosphericShaderOverride = null;
// public Shader occlusionShaderOverride = null;
public float worldScaleExponent = 1.0f;
// public bool forcePerPixel = true;
// public bool forcePostEffect = true;
[Tooltip("Soft clouds need depth values. Ignore means externally controlled.")]
public DepthTexture depthTexture = DepthTexture.Enable;
public ScatterDebugMode debugMode = ScatterDebugMode.None;
// [HideInInspector] public Shader occlusionShader;
// [HideInInspector] public Shader occlusionShaderOverride;
// Camera m_currentCamera;

);
}
if (atmosphericShader == null)
if (atmosphericShaderOverride != null)
// TODO: add a default shader.
// atmosphericShader = Shader.Find("Path/UnityShaderNameWithoutExt");
// Override the default shader.
m_atmosphericMaterial = new Material(atmosphericShaderOverride);
m_atmosphericMaterial.hideFlags = HideFlags.HideAndDontSave;
m_atmosphericMaterial = new Material(atmosphericShader);
m_atmosphericMaterial.hideFlags = HideFlags.HideAndDontSave;
if (occlusionShader == null)
if (occlusionShaderOverride != null)
// TODO: add a default shader.
// occlusionShader = Shader.Find("Path/UnityShaderNameWithoutExt");
// Override the default shader.
m_occlusionMaterial = new Material(occlusionShaderOverride);
m_occlusionMaterial.hideFlags = HideFlags.HideAndDontSave;
m_occlusionMaterial = new Material(occlusionShader);
m_occlusionMaterial.hideFlags = HideFlags.HideAndDontSave;
*/
m_isAwake = true;

{
Debug.LogErrorFormat("Unexpected: AtmosphericParameters is not attached to a directional light.");
return;
}
if (atmosphericShader == null)
{
Debug.LogErrorFormat("Unexpected: AtmosphericParameters.atmosphericShader is not set.");
return;
}
worldScaleExponent = Mathf.Clamp(worldScaleExponent, 1f, 2f);

void UpdateKeywords(bool enable)
{
if (atmosphericShader == null)
{
Debug.LogErrorFormat("Unexpected: AtmosphericParameters.atmosphericShader is not set.");
return;
}
Shader.DisableKeyword("ATMOSPHERICS");
Shader.DisableKeyword("ATMOSPHERICS_PER_PIXEL");
Shader.DisableKeyword("ATMOSPHERICS_OCCLUSION");

{
if (!m_isAwake) return;
/* For now, we only use the directional light we are attached to, and the current camera. */
if (depthTexture == DepthTexture.Disable)
{
// Disable depth texture rendering.
Camera.current.depthTextureMode = DepthTextureMode.None;
}
// Set shader constants.
UpdateDynamicUniforms();

void UpdateDynamicUniforms()
{
if (atmosphericShader == null)
{
// Do nothing. Avoid spamming the console.
return;
}
/* For now, we only use the directional light *
* we are attached to, and the primary camera. */
var trackedYaw = skyDomeTrackedYawRotation ? skyDomeTrackedYawRotation.eulerAngles.y : 0f;
Shader.SetGlobalMatrix("u_SkyDomeRotation",
Matrix4x4.TRS(Vector3.zero, Quaternion.Euler(skyDomeRotation.x, 0f, 0f), Vector3.one)

Shader.SetGlobalFloat("u_WorldMieDensity", -worldMieDensity / 100000f);
Shader.SetGlobalFloat("u_HeightMieDensity", -heightMieDensity / 100000f);
var pixelRect = new Rect(0f, 0f, Screen.width, Screen.height);
var pixelRect = Camera.current ? Camera.current.pixelRect
: new Rect(0f, 0f, Screen.width, Screen.height);
var depthTextureScaledTexelSize = new Vector4(scale / pixelRect.width, scale / pixelRect.height, -scale / pixelRect.width, -scale / pixelRect.height);
var depthTextureScaledTexelSize = new Vector4(scale / pixelRect.width,
scale / pixelRect.height,
-scale / pixelRect.width,
-scale / pixelRect.height);
Shader.SetGlobalVector("u_DepthTextureScaledTexelSize", depthTextureScaledTexelSize);
}

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