void SetupSpotShadow(ref ScriptableRenderContext context, ref CullingResults cullingResults, int shadowMapSize, int index, ref VisibleLight visibleLight)
{
Bounds shadowBounds;
if (visibleLight.light.shadows != LightShadows.None && cullingResults.GetShadowCasterBounds(index, out shadowBounds))
{
ShadowLight shadowLight = new ShadowLight();
shadowLight.cascades = new ShadowCascade[1];
shadowLight.cullingSpheres = null;
shadowLight.tileSize = shadowMapSize;
Matrix4x4 viewMatrix;
Matrix4x4 projectionMatrix;
ShadowSplitData splitData;
if (cullingResults.ComputeSpotShadowMatricesAndCullingPrimitives(index, out viewMatrix, out projectionMatrix, out splitData))
{
ShadowCascade shadowCascade = new ShadowCascade();
shadowCascade.viewMatrix = viewMatrix;
shadowCascade.projectionMatrix = projectionMatrix;
shadowCascade.worldToShadowMatrix = CreateWorldToShadowMatrix(viewMatrix, projectionMatrix);
shadowCascade.tileOffset = Vector2Int.zero;
shadowCascade.splitData = splitData;
shadowLight.cascades[0] = shadowCascade;
}
shadowData.lights[index] = shadowLight;
}
}
void SetupDirectionalShadow(ref ScriptableRenderContext context, ref CullingResults cullingResults, int shadowMapSize, int index, ref VisibleLight visibleLight)
{
Bounds shadowBounds;
if (visibleLight.light.shadows != LightShadows.None && cullingResults.GetShadowCasterBounds(index, out shadowBounds))
{
ShadowLight shadowLight = new ShadowLight();
shadowLight.cascades = new ShadowCascade[4];
shadowLight.cullingSpheres = new Vector4[4];
shadowLight.tileSize = shadowMapSize / 2;
for (int j = 0; j < 4; j++)
{
Matrix4x4 viewMatrix;
Matrix4x4 projectionMatrix;
ShadowSplitData splitData;
if (cullingResults.ComputeDirectionalShadowMatricesAndCullingPrimitives(index, j, 4, fourCascadesSplit, shadowLight.tileSize, visibleLight.light.shadowNearPlane, out viewMatrix, out projectionMatrix, out splitData))
{
Vector2Int tileOffset = new Vector2Int(j % 2, j / 2);
Matrix4x4 tileMatrix = Matrix4x4.identity;
tileMatrix.m00 = tileMatrix.m11 = 0.5f;
tileMatrix.m03 = tileOffset.x * 0.5f;
tileMatrix.m13 = tileOffset.y * 0.5f;
ShadowCascade shadowCascade = new ShadowCascade();
shadowCascade.viewMatrix = viewMatrix;
shadowCascade.projectionMatrix = projectionMatrix;
shadowCascade.worldToShadowMatrix = tileMatrix * CreateWorldToShadowMatrix(viewMatrix, projectionMatrix);
shadowCascade.tileOffset = tileOffset;
shadowCascade.splitData = splitData;
shadowLight.cullingSpheres[j] = splitData.cullingSphere;
shadowLight.cullingSpheres[j].w *= shadowLight.cullingSpheres[j].w;
shadowLight.cascades[j] = shadowCascade;
}
}
shadowData.lights[index] = shadowLight;
}
}
