private void CalculateOcclusion(int layers, Vector4 worldEye, Vector4 worldTgt, ref float occlusion)
{
if (SgtOcclusion.IsValid(occlusion, layers, gameObject) == true && OuterRadius > 0.0f && outerDepthTex != null)
{
var eye = cachedTransform.InverseTransformPoint(worldEye) / OuterRadius;
var tgt = cachedTransform.InverseTransformPoint(worldTgt) / OuterRadius;
var dir = Vector3.Normalize(tgt - eye);
var len = Vector3.Magnitude(tgt - eye);
var length = default(float);
if (GetLength(eye, dir, len, ref length) == true)
{
var localPosition = cachedTransform.InverseTransformPoint(worldEye);
var localDistance = localPosition.magnitude;
var innerThickness = default(float);
var outerThickness = default(float);
var innerRatio = SgtHelper.Divide(innerMeshRadius, OuterRadius);
var middleRatio = Mathf.Lerp(innerRatio, 1.0f, middle);
var distance = SgtHelper.Divide(localDistance, OuterRadius);
var outerDensity = 1.0f - outerFog;
SgtHelper.CalculateHorizonThickness(innerRatio, middleRatio, distance, out innerThickness, out outerThickness);
length *= SgtHelper.Reciprocal(outerThickness * outerDensity);
var depth = outerDepthTex.GetPixelBilinear(length, length).a;
depth = Mathf.Clamp01(depth + (1.0f - depth) * GetSky(worldEye, localDistance));
occlusion += (1.0f - occlusion) * depth;
}
}
}
private void CameraPreRender(Camera camera)
{
if (model != null)
{
model.Restore(camera);
}
// Write camera-dependant shader values
if (innerMaterial != null && outerMaterial != null)
{
var localPosition = cachedTransform.InverseTransformPoint(camera.transform.position);
var localDistance = localPosition.magnitude;
var height01 = Mathf.InverseLerp(OuterRadius, InnerMeshRadius, localDistance);
var innerThickness = default(float);
var outerThickness = default(float);
var innerRatio = SgtHelper.Divide(InnerMeshRadius, OuterRadius);
var middleRatio = Mathf.Lerp(innerRatio, 1.0f, Middle);
var distance = SgtHelper.Divide(localDistance, OuterRadius);
var innerDensity = 1.0f - InnerFog;
var outerDensity = 1.0f - OuterFog;
SgtHelper.CalculateHorizonThickness(innerRatio, middleRatio, distance, out innerThickness, out outerThickness);
innerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(innerThickness * innerDensity));
outerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(outerThickness * outerDensity));
if (OuterDepthTex != null)
{
#if UNITY_EDITOR
SgtHelper.MakeTextureReadable(OuterDepthTex);
#endif
outerMaterial.SetFloat(SgtShader._Sky, GetSky(camera) * OuterDepthTex.GetPixelBilinear(height01 / outerDensity, 0.0f).a);
}
var scale = SgtHelper.Divide(OuterMeshRadius, OuterRadius);
var worldToLocal = Matrix4x4.Scale(new Vector3(scale, scale, scale)) * cachedTransform.worldToLocalMatrix; // cachedTransform might not be set here, so use the property
innerMaterial.SetMatrix(SgtShader._WorldToLocal, worldToLocal);
outerMaterial.SetMatrix(SgtShader._WorldToLocal, worldToLocal);
// Write lights and shadows
SgtHelper.SetTempMaterial(innerMaterial, outerMaterial);
var mask = 1 << gameObject.layer;
var lights = SgtLight.Find(Lit, mask);
SgtShadow.Find(Lit, mask, lights);
SgtShadow.FilterOutSphere(transform.position);
SgtShadow.Write(Lit, 2);
SgtLight.FilterOut(transform.position);
SgtLight.Write(Lit, transform.position, cachedTransform, null, ScatteringStrength, 2);
}
}
private void HandleCameraDraw(Camera camera)
{
if (SgtHelper.CanDraw(gameObject, camera) == false)
{
return;
}
// Write camera-dependent shader values
if (innerMaterial != null && outerMaterial != null)
{
var localPosition = CachedTransform.InverseTransformPoint(camera.transform.position);
var localDistance = localPosition.magnitude;
var innerThickness = default(float);
var outerThickness = default(float);
var innerRatio = SgtHelper.Divide(innerMeshRadius, OuterRadius);
var middleRatio = Mathf.Lerp(innerRatio, 1.0f, middle);
var distance = SgtHelper.Divide(localDistance, OuterRadius);
var innerDensity = 1.0f - innerFog;
var outerDensity = 1.0f - outerFog;
SgtHelper.CalculateHorizonThickness(innerRatio, middleRatio, distance, out innerThickness, out outerThickness);
innerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(innerThickness * innerDensity));
outerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(outerThickness * outerDensity));
if (outerDepthTex != null)
{
#if UNITY_EDITOR
SgtHelper.MakeTextureReadable(outerDepthTex);
#endif
outerMaterial.SetFloat(SgtShader._Sky, GetSky(localDistance));
}
UpdateMaterialNonSerialized();
}
var scale = SgtHelper.Divide(OuterRadius, outerMeshRadius);
var matrix = CachedTransform.localToWorldMatrix * Matrix4x4.Scale(Vector3.one * scale);
if (cameraOffset != 0.0f)
{
var direction = Vector3.Normalize(camera.transform.position - cachedTransform.position);
matrix = Matrix4x4.Translate(direction * cameraOffset) * matrix;
}
Graphics.DrawMesh(outerMesh, matrix, outerMaterial, gameObject.layer, camera);
}
private void CameraPreRender(Camera camera)
{
if (model != null)
{
model.Restore(camera);
}
// Write camera-dependant shader values
if (innerMaterial != null && outerMaterial != null)
{
var localPosition = cachedTransform.InverseTransformPoint(camera.transform.position);
var localDistance = localPosition.magnitude;
var height01 = Mathf.InverseLerp(OuterRadius, InnerMeshRadius, localDistance);
var innerThickness = default(float);
var outerThickness = default(float);
var innerRatio = SgtHelper.Divide(InnerMeshRadius, OuterRadius);
var middleRatio = Mathf.Lerp(innerRatio, 1.0f, Middle);
var distance = SgtHelper.Divide(localDistance, OuterRadius);
var innerDensity = 1.0f - InnerFog;
var outerDensity = 1.0f - OuterFog;
SgtHelper.CalculateHorizonThickness(innerRatio, middleRatio, distance, out innerThickness, out outerThickness);
innerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(innerThickness * innerDensity));
outerMaterial.SetFloat(SgtShader._HorizonLengthRecip, SgtHelper.Reciprocal(outerThickness * outerDensity));
if (OuterDepthTex != null)
{
#if UNITY_EDITOR
SgtHelper.MakeTextureReadable(OuterDepthTex);
#endif
outerMaterial.SetFloat(SgtShader._Sky, Sky * OuterDepthTex.GetPixelBilinear(height01 / outerDensity, 0.0f).a);
}
UpdateMaterialNonSerialized();
}
}