private Bounds CalculateProjectionBoundInLightSpace(CharacterShadowCommonSettingsComponent settings, Bounds boundsInLightSpace, float offset)
{
float num3 = Mathf.Max(boundsInLightSpace.size.x, boundsInLightSpace.size.y) / ((float)((((settings.textureSize - settings.blurSize) - settings.blurSize) - 1) - 1));
float num4 = (2 * (1 + settings.blurSize)) * num3;
float x = boundsInLightSpace.size.x + num4;
float y = boundsInLightSpace.size.y + num4;
if (x > y)
{
y += ((Mathf.Ceil((y - 0.01f) / (num3 + num3)) * (num3 + num3)) - y) * 0.5f;
}
else
{
x += ((Mathf.Ceil((x - 0.01f) / (num3 + num3)) * (num3 + num3)) - x) * 0.5f;
}
Bounds bounds = new Bounds {
size = new Vector3(x, y, boundsInLightSpace.size.z - offset)
};
bounds.center = new Vector3(boundsInLightSpace.center.x, boundsInLightSpace.center.y, boundsInLightSpace.max.z - bounds.extents.z);
return(bounds);
}
private void UpdateShadowMapSize(CharacterShadowCommonSettingsComponent settings, ICollection <CharacterShadowNode> visibleCharacters, ICollection <CharacterShadowNode> allCharacters)
{
int num = (settings.shadowMap != null) ? settings.shadowMap.width : 0;
int num2 = Mathf.CeilToInt(Mathf.Sqrt((float)visibleCharacters.Count));
int width = Mathf.NextPowerOfTwo(settings.textureSize * num2);
int num4 = Mathf.CeilToInt(Mathf.Sqrt((float)allCharacters.Count));
if ((width > num) | ((2 * Mathf.NextPowerOfTwo(settings.textureSize * num4)) < num))
{
Object.Destroy(settings.shadowMap);
settings.shadowMap = null;
if (width > 0)
{
settings.shadowMap = new RenderTexture(width, width, 0, settings.ShadowMapTextureFormat, RenderTextureReadWrite.Linear);
settings.shadowMap.isPowerOfTwo = true;
settings.shadowMap.filterMode = FilterMode.Bilinear;
settings.shadowMap.useMipMap = false;
}
foreach (CharacterShadowNode node in allCharacters)
{
node.characterShadowInternal.Projector.material.mainTexture = settings.shadowMap;
}
}
}
private void CalculateShadowInternalData(CharacterShadowInternalComponent shadowInternalData, CharacterShadowComponent characterShadow, CharacterShadowCommonSettingsComponent shadowCommonSettings)
{
Projector projector = this.CreateProjector(shadowCommonSettings);
shadowInternalData.Projector = projector;
shadowInternalData.BaseAlpha = characterShadow.color.a;
shadowInternalData.CasterMaterial = new Material(shadowCommonSettings.casterShader);
}
private void UpdateBoundsAndCullCharacters(ICollection <CharacterShadowNode> collector, ICollection <CharacterShadowNode> characters, CameraComponent cameraComponent, CharacterShadowCommonSettingsComponent settings)
{
Matrix4x4 localToWorldMatrix = settings.virtualLight.localToWorldMatrix;
Matrix4x4 worldToLocalMatrix = settings.virtualLight.worldToLocalMatrix;
Plane[] planes = GeometryUtility.CalculateFrustumPlanes((cameraComponent.ProjectionMatrix * cameraComponent.WorldToCameraMatrix) * localToWorldMatrix);
int num = 0;
int maxCharactersCountInAtlas = settings.MaxCharactersCountInAtlas;
foreach (CharacterShadowNode node in characters)
{
bool flag = num < maxCharactersCountInAtlas;
Bounds boundsInLightSpace = BoundsUtils.TransformBounds(node.characterShadowCasters.BoundsInWorldSpace, worldToLocalMatrix);
CharacterShadowComponent characterShadow = node.characterShadow;
CharacterShadowInternalComponent characterShadowInternal = node.characterShadowInternal;
characterShadowInternal.ProjectionBoundInLightSpace = this.CalculateProjectionBoundInLightSpace(settings, boundsInLightSpace, characterShadow.offset);
Bounds projectionBoundInLightSpace = characterShadowInternal.ProjectionBoundInLightSpace;
projectionBoundInLightSpace.max += new Vector3(0f, 0f, characterShadow.attenuation);
flag &= GeometryUtility.TestPlanesAABB(planes, projectionBoundInLightSpace);
characterShadowInternal.Projector.enabled = flag;
if (flag)
{
collector.Add(node);
}
num++;
}
}