void InitCameraInfo()
{
if (m_TargetCamera != null)
{
var lookAt = m_TargetCamInfo.lookAt;
m_IsCamOri = m_TargetCamera.orthographic;
if (m_TargetCamera.orthographic)
{
m_TargetCamInfo = new PVSCameraInfo();
m_TargetCamInfo.far = m_TargetCamera.farClipPlane;
m_TargetCamInfo.near = m_TargetCamera.nearClipPlane;
m_TargetCamInfo.fieldOfView = m_TargetCamera.orthographicSize;
}
else
{
m_TargetCamInfo = new PVSCameraInfo();
m_TargetCamInfo.far = m_TargetCamera.farClipPlane;
m_TargetCamInfo.near = m_TargetCamera.nearClipPlane;
m_TargetCamInfo.fieldOfView = m_TargetCamera.fieldOfView;
}
m_TargetCamInfo.lookAt = lookAt;
m_TargetCamInfo.aspect = m_TargetCamera.aspect;
m_TargetCamInfo.position = m_TargetCamera.transform.position;
m_TargetCamInfo.cullMatrix = m_TargetCamera.cullingMatrix;
}
}
public PVSBakerThread(Vector3[] cellArray, PVSCell[] results, PVSBounds[] bounds, int startIdx, int endIdx, PVSCameraInfo camInfo, bool isOriCam)
{
m_CellArray = cellArray;
m_Results = results;
m_Bounds = bounds;
m_StartIdx = startIdx;
m_EndIdx = endIdx;
m_CamInfo = camInfo;
m_IsOriCam = isOriCam;
}
private void CellRays(int cellIdx, Vector3 cellPos, PVSBounds[] bounds, PVSCameraInfo camInfo, bool isOriCam)
{
var cell = m_Results[cellIdx];
cell.ResetVisible();
Vector3 right = camInfo.right;
Vector3 up = camInfo.up;
Vector3 lookAt = camInfo.lookAt;
if (isOriCam)
{
// 正交攝影機
var width = camInfo.CameraWidth;
var height = camInfo.CameraHeight;
float perX = GetPerX(width);
float perY = GetPerY(height);
Vector3 halfV = (right * width / 2.0f + up * height / 2.0f);
Vector3 minVec = cellPos - halfV;
float stepY = 0;
while (stepY <= height)
{
float stepX = 0;
Vector3 yy = stepY * up;
while (stepX <= width)
{
Vector3 startPt = minVec + stepX * right + yy + lookAt * camInfo.near;
Ray ray = new Ray(startPt, lookAt);
float tutDistance = 0;
while (true)
{
int collisionIdx = PVSRayTrack.sdPVSCells(ref ray, bounds, ref tutDistance);
if (collisionIdx >= 0)
{
var b = m_Bounds[collisionIdx];
cell.SetVisible(b.id, true);
break;
}
if (tutDistance > (camInfo.far - camInfo.near))
{
break;
}
}
stepX += perX;
}
stepY += perY;
}
lock (cell) {
cell.isEditorDone = true;
}
}
else
{
// 透視攝影機
var width = camInfo.farWidth;
var height = camInfo.farHeight;
float perX = GetPerX(width);
float perY = GetPerY(height);
Vector3 halfV = (right * width / 2.0f + up * height / 2.0f);
Vector3 minVec = cellPos - halfV;
float d = camInfo.far;
float stepY = 0;
while (stepY < height)
{
float stepX = 0;
Vector3 yy = stepY * up;
while (stepX < width)
{
Vector3 endPt = minVec + stepX * right + yy + lookAt * d;
Vector3 dir = (endPt - camInfo.position).normalized;
Ray ray = new Ray(camInfo.position, dir);
float tutDistance = 0;
while (true)
{
int collisionIdx = PVSRayTrack.sdPVSCells(ref ray, bounds, ref tutDistance);
if (collisionIdx >= 0)
{
var b = m_Bounds[collisionIdx];
cell.SetVisible(b.id, true);
break;
}
if (tutDistance > camInfo.far)
{
break;
}
}
stepX += perX;
}
stepY += perY;
}
lock (cell) {
cell.isEditorDone = true;
}
}
}
private void ProcessCurrentScene(bool isOnlyInit = false)
{
// 获得当前场景NavMesh
if (isOnlyInit)
{
var tris = UnityEngine.AI.NavMesh.CalculateTriangulation();
if (tris.vertices == null || tris.indices == null || tris.indices.Length <= 0 || tris.vertices.Length <= 0)
{
Debug.LogError("当前场景没有NavMesh");
return;
}
m_PVSItemIDS = GameObject.FindObjectOfType <PVSItemIDS>();
if (m_PVSItemIDS == null)
{
GameObject obj = new GameObject("PVSItemIDS", typeof(PVSItemIDS));
m_PVSItemIDS = obj.GetComponent <PVSItemIDS>();
}
Vector3 minVec = Vector3.zero;
Vector3 maxVec = Vector3.zero;
for (int i = 0; i < tris.vertices.Length; ++i)
{
var vec = tris.vertices [i];
if (i == 0)
{
minVec = vec;
maxVec = vec;
}
else
{
minVec.x = Mathf.Min(minVec.x, vec.x);
minVec.y = Mathf.Min(minVec.y, vec.y);
minVec.z = Mathf.Min(minVec.z, vec.z);
maxVec.x = Mathf.Max(maxVec.x, vec.x);
maxVec.y = Mathf.Max(maxVec.y, vec.y);
maxVec.z = Mathf.Max(maxVec.z, vec.z);
}
}
float camY = this.CamHeight;
// 处理区域
Vector3 center = (maxVec + minVec) / 2.0f;
Vector3 size = (maxVec - minVec);
size.x = Mathf.Abs(size.x);
size.y = Mathf.Abs(size.y);
size.z = Mathf.Abs(size.z);
m_SearchBounds = new Bounds(center, size);
int col = Mathf.CeilToInt(size.x / PVSCell.CellSize);
int row = Mathf.CeilToInt(size.z / PVSCell.CellSize);
Vector3 halfSize = new Vector3(PVSCell.CellSize, 0, PVSCell.CellSize) / 2.0f;
Vector3[] arr = new Vector3[col * row];
for (int r = 0; r < row; ++r)
{
for (int c = 0; c < col; ++c)
{
int idx = c + r * col;
Vector3 pt = new Vector3(c * PVSCell.CellSize + minVec.x, center.y, r * PVSCell.CellSize + minVec.z) + halfSize;
UnityEngine.AI.NavMeshHit hit;
if (UnityEngine.AI.NavMesh.SamplePosition(pt, out hit, PVSCell.CellSize, int.MaxValue))
{
pt.y = hit.position.y + camY / 2.0f;
}
else
{
// 再搜索四个角，看是否有效，否则直接SIZE为0
Vector3 c1 = pt - halfSize;
Vector3 c2 = pt - new Vector3(halfSize.x, 0, -halfSize.z);
Vector3 c3 = pt + halfSize;
Vector3 c4 = pt + new Vector3(halfSize.x, 0, -halfSize.z);
if ((!UnityEngine.AI.NavMesh.SamplePosition(c1, out hit, PVSCell.CellSize, int.MaxValue)) &&
(!UnityEngine.AI.NavMesh.SamplePosition(c2, out hit, PVSCell.CellSize, int.MaxValue)) &&
(!UnityEngine.AI.NavMesh.SamplePosition(c3, out hit, PVSCell.CellSize, int.MaxValue)) &&
(!UnityEngine.AI.NavMesh.SamplePosition(c4, out hit, PVSCell.CellSize, int.MaxValue))
)
{
pt = Vector3.zero;
m_CellIngoreArray.Add(idx);
}
}
arr [idx] = pt;
}
}
m_CellArray = arr;
return;
}
var size1 = m_SearchBounds.size;
int col1 = Mathf.CeilToInt(size1.x / PVSCell.CellSize);
int row1 = Mathf.CeilToInt(size1.z / PVSCell.CellSize);
InitPVSMeshes();
InitCellResults();
ClearThreads();
if (m_CheckCellBuffer != null)
{
m_CheckCellBuffer.Dispose();
m_CheckCellBuffer = null;
}
if (m_CameraBuffer != null)
{
m_CameraBuffer.Dispose();
m_CameraBuffer = null;
}
if (m_BakerMode == PVSSceneBakerMode.CameraRTCpuMode || m_BakerMode == PVSSceneBakerMode.CameraRTComputeMode)
{
if (m_PVSCellShader == null)
{
Debug.LogError("PVS烘焙ComputeShader找不到");
return;
}
PVSCameraRtTrack camRtTrack = new PVSCameraRtTrack();
camRtTrack.Start(m_TargetCamera, m_CellsResult, m_PVSItemIDS, m_TargetCamInfo.lookAt, m_PVSCellShader, m_BakerMode == PVSSceneBakerMode.CameraRTComputeMode);
OnCpuThreadDone();
return;
}
if (!SystemInfo.supportsComputeShaders || m_BakerMode == PVSSceneBakerMode.CpuThreadMode)
{
if (m_BakerMode == PVSSceneBakerMode.ComputeShaderMode)
{
Debug.LogError("设备不支持ComputeShader");
}
// 开启线程模式
CreateThreadMode();
return;
}
m_CheckCellBuffer = new ComputeBuffer(m_CellArray.Length, Marshal.SizeOf(typeof(Vector3)));
m_CheckCellBuffer.SetData(m_CellArray);
m_CameraBuffer = new ComputeBuffer(1, Marshal.SizeOf(typeof(PVSCameraInfo)));
PVSCameraInfo[] camArr = new PVSCameraInfo[1];
camArr[0] = m_TargetCamInfo;
m_CameraBuffer.SetData(camArr);
if (m_PVSCellShader != null)
{
int main = m_PVSCellShader.FindKernel("PVSBaker");
m_PVSCellShader.SetBuffer(main, "pvsBakerPosArray", m_CheckCellBuffer);
m_PVSCellShader.SetBuffer(main, "camera", m_CameraBuffer);
m_PVSCellShader.Dispatch(main, col1, row1, 1);
}
else
{
Debug.LogError("PVS烘焙ComputeShader找不到");
}
}