public static int MultiRaycastWithoutRenderer(Camera camera, Vector2[] pixelPositions, List <GPURaycastInfo> hitsInfo)
{
hitsInfo.Clear();
if (pixelPositions.Length == 0)
{
return(0);
}
float resolution = 0.4f;
int cameraPixelWidth = camera.targetTexture == null ? camera.pixelWidth : camera.targetTexture.width;
int cameraPixelHeight = camera.targetTexture == null ? camera.pixelHeight : camera.targetTexture.height;
cameraPixelWidth = (int)(cameraPixelWidth * resolution);
cameraPixelHeight = (int)(cameraPixelHeight * resolution);
for (int i = 0; i < pixelPositions.Length; i++)
{
pixelPositions[i] *= resolution;
}
if (lastCamera != camera || gpuRaycastCamera == null)
{
gpuRaycastCamera = new GameObject("GPURaycastCamera", typeof(Camera)).GetComponent <Camera>();
gpuRaycastCamera.gameObject.SetActive(false);
gpuRaycastCamera.enabled = false;
gpuRaycastCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;
}
gpuRaycastCamera.cameraType = CameraType.Game;
gpuRaycastCamera.targetTexture = null;
gpuRaycastCamera.transform.position = camera.transform.position;
gpuRaycastCamera.transform.rotation = camera.transform.rotation;
gpuRaycastCamera.clearFlags = CameraClearFlags.Color;
gpuRaycastCamera.backgroundColor = Color.clear;
gpuRaycastCamera.renderingPath = RenderingPath.Forward;
gpuRaycastCamera.rect = camera.rect;
gpuRaycastCamera.fieldOfView = camera.fieldOfView;
gpuRaycastCamera.aspect = camera.aspect;
lastCamera = camera;
if (LastPixelWidth != cameraPixelWidth || LastPixelHeight != cameraPixelHeight || worldPosBuffer == null || worldNormBuffer == null || idBuffer == null)
{
if (worldPosBuffer != null)
{
worldPosBuffer.Release();
GameObject.DestroyImmediate(worldPosBuffer, true);
}
if (worldNormBuffer != null)
{
worldNormBuffer.Release();
GameObject.DestroyImmediate(worldNormBuffer, true);
}
if (idBuffer != null)
{
idBuffer.Release();
GameObject.DestroyImmediate(idBuffer, true);
}
worldPosBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 16, RenderTextureFormat.ARGBFloat);
worldNormBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
idBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
worldPosBuffer.Create();
worldNormBuffer.Create();
idBuffer.Create();
mrtBuffers = new RenderBuffer[3];
mrtBuffers[0] = worldPosBuffer.colorBuffer;
mrtBuffers[1] = worldNormBuffer.colorBuffer;
mrtBuffers[2] = idBuffer.colorBuffer;
LastPixelWidth = cameraPixelWidth;
LastPixelHeight = cameraPixelHeight;
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
}
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
gpuRaycastCamera.RenderWithShader(gpuRaycastShader, "");
/*
* int minX = (int)pixelPositions.Min((v) => v.x);
* int minY = (int)pixelPositions.Min((v) => v.y);
* int maxX = (int)pixelPositions.Max((v) => v.x);
* int maxY = (int)pixelPositions.Max((v) => v.y);
*/
int minX = cameraPixelWidth;
int minY = cameraPixelHeight;
int maxX = 0;
int maxY = 0;
for (int i = 0; i < pixelPositions.Length; i++)
{
if (pixelPositions[i].x < minX)
{
minX = (int)pixelPositions[i].x;
}
if (pixelPositions[i].x > maxX)
{
maxX = (int)pixelPositions[i].x;
}
if (pixelPositions[i].y < minY)
{
minY = (int)pixelPositions[i].y;
}
if (pixelPositions[i].y > maxY)
{
maxY = (int)pixelPositions[i].y;
}
}
int width = Mathf.Clamp(maxX - minX, 1, cameraPixelWidth);
int height = Mathf.Clamp(maxY - minY, 1, cameraPixelHeight);
//Debug.Log(minX + " " + minY + " " + width + " " + height);
Texture2D posBufferCopy = posBufferCopy = new Texture2D(width, height, TextureFormat.RGBAFloat, false);
Texture2D normBufferCopy = normBufferCopy = new Texture2D(width, height, TextureFormat.RGBAFloat, false);
//Texture2D idBufferCopy = idBufferCopy = new Texture2D(cameraPixelWidth, cameraPixelHeight, TextureFormat.RGBAFloat, false);
var lastActive = RenderTexture.active;
RenderTexture.active = worldPosBuffer;
posBufferCopy.ReadPixels(new Rect(minX, minY, width, height), 0, 0);
RenderTexture.active = worldNormBuffer;
normBufferCopy.ReadPixels(new Rect(minX, minY, width, height), 0, 0);
//RenderTexture.active = idBuffer;
//idBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = lastActive;
posBufferCopy.Apply();
normBufferCopy.Apply();
//idBufferCopy.Apply();
Color[] pixelsPositions = posBufferCopy.GetPixels();
Color[] pixelsNormals = normBufferCopy.GetPixels();
for (int i = 0; i < pixelPositions.Length; i++)
{
var pixelPosition = pixelPositions[i] - new Vector2(minX, minY) - Vector2.one;
pixelPosition.y = height - pixelPosition.y;
pixelPosition.x = Mathf.Clamp(pixelPosition.x, 0, width - 1);
pixelPosition.y = Mathf.Clamp(pixelPosition.y, 0, height - 1);
int idx = (int)pixelPosition.x;
int idy = (int)pixelPosition.y;
positionRead = pixelsPositions[idy * width + idx];
normalRead = pixelsNormals[idy * width + idx];
if (positionRead.a > 0)
{
GPURaycastInfo hitInfo = new GPURaycastInfo();
hitInfo.position = new Vector3(positionRead.r, positionRead.g, positionRead.b);
hitInfo.normal = new Vector3(normalRead.r, normalRead.g, normalRead.b);
hitsInfo.Add(hitInfo);
}
}
GameObject.DestroyImmediate(posBufferCopy, true);
GameObject.DestroyImmediate(normBufferCopy, true);
return(hitsInfo.Count);
}
public static GPURaycastInfo[] FullscreenRaycast(Camera camera, float resolutionFactor, out int width, out int height)
{
InitRes();
float resolution = resolutionFactor;
int cameraPixelWidth = camera.targetTexture == null ? camera.pixelWidth : camera.targetTexture.width;
int cameraPixelHeight = camera.targetTexture == null ? camera.pixelHeight : camera.targetTexture.height;
cameraPixelWidth = (int)(cameraPixelWidth * resolution);
cameraPixelHeight = (int)(cameraPixelHeight * resolution);
width = cameraPixelWidth;
height = cameraPixelHeight;
if (lastCamera != camera || gpuRaycastCamera == null)
{
gpuRaycastCamera = new GameObject("GPURaycastCamera", typeof(Camera)).GetComponent <Camera>();
gpuRaycastCamera.gameObject.SetActive(false);
gpuRaycastCamera.enabled = false;
gpuRaycastCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;
}
gpuRaycastCamera.cameraType = CameraType.Game;
gpuRaycastCamera.targetTexture = null;
gpuRaycastCamera.transform.position = camera.transform.position;
gpuRaycastCamera.transform.rotation = camera.transform.rotation;
gpuRaycastCamera.clearFlags = CameraClearFlags.Color;
gpuRaycastCamera.backgroundColor = Color.clear;
gpuRaycastCamera.renderingPath = RenderingPath.Forward;
gpuRaycastCamera.rect = camera.rect;
gpuRaycastCamera.fieldOfView = camera.fieldOfView;
gpuRaycastCamera.aspect = camera.aspect;
lastCamera = camera;
if (LastPixelWidth != width || LastPixelHeight != height || worldPosBuffer == null || worldNormBuffer == null || idBuffer == null)
{
if (worldPosBuffer != null)
{
worldPosBuffer.Release();
GameObject.DestroyImmediate(worldPosBuffer, true);
}
if (worldNormBuffer != null)
{
worldNormBuffer.Release();
GameObject.DestroyImmediate(worldNormBuffer, true);
}
if (idBuffer != null)
{
idBuffer.Release();
GameObject.DestroyImmediate(idBuffer, true);
}
worldPosBuffer = new RenderTexture(width, height, 16, RenderTextureFormat.ARGBFloat);
worldNormBuffer = new RenderTexture(width, height, 0, RenderTextureFormat.ARGBFloat);
idBuffer = new RenderTexture(width, height, 0, RenderTextureFormat.ARGBFloat);
worldPosBuffer.Create();
worldNormBuffer.Create();
idBuffer.Create();
mrtBuffers = new RenderBuffer[3];
mrtBuffers[0] = worldPosBuffer.colorBuffer;
mrtBuffers[1] = worldNormBuffer.colorBuffer;
mrtBuffers[2] = idBuffer.colorBuffer;
LastPixelWidth = width;
LastPixelHeight = height;
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
}
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
gpuRaycastCamera.RenderWithShader(gpuRaycastShader, "");
ComputeBuffer bufferPositions = new ComputeBuffer(width * height, sizeof(float) * 4);
ComputeBuffer bufferNormals = new ComputeBuffer(width * height, sizeof(float) * 4);
uint x, y, z;
gpuRaycastCopyDataShader.GetKernelThreadGroupSizes(0, out x, out y, out z);
gpuRaycastCopyDataShader.SetInt("buffersWidth", width);
gpuRaycastCopyDataShader.SetTexture(0, "posTex", worldPosBuffer);
gpuRaycastCopyDataShader.SetTexture(0, "normalTex", worldNormBuffer);
gpuRaycastCopyDataShader.SetBuffer(0, "positions", bufferPositions);
gpuRaycastCopyDataShader.SetBuffer(0, "normals", bufferNormals);
gpuRaycastCopyDataShader.Dispatch(0, (int)(width / x), (int)(height / y), 1);
Vector4[] positions = new Vector4[width * height];
Vector4[] normals = new Vector4[width * height];
bufferPositions.GetData(positions);
bufferNormals.GetData(normals);
GPURaycastInfo[] hits = new GPURaycastInfo[width * height];
GPURaycastInfo hitInfo = new GPURaycastInfo();
for (int i = 0; i < hits.Length; i++)
{
hitInfo.position = positions[i];
hitInfo.normal = normals[i];
hitInfo.IsHitted = positions[i].w > 0;
hits[i] = hitInfo;
}
bufferPositions.Dispose();
bufferNormals.Dispose();
/*
* Texture2D posBufferCopy = posBufferCopy = new Texture2D(width, height, TextureFormat.RGBAFloat, false);
* Texture2D normBufferCopy = normBufferCopy = new Texture2D(width, height, TextureFormat.RGBAFloat, false);
* //Texture2D idBufferCopy = idBufferCopy = new Texture2D(cameraPixelWidth, cameraPixelHeight, TextureFormat.RGBAFloat, false);
*
* var lastActive = RenderTexture.active;
* RenderTexture.active = worldPosBuffer;
* posBufferCopy.ReadPixels(new Rect(0, 0, width, height), 0, 0);
* RenderTexture.active = worldNormBuffer;
* normBufferCopy.ReadPixels(new Rect(0, 0, width, height), 0, 0);
* //RenderTexture.active = idBuffer;
* //idBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
* RenderTexture.active = lastActive;
* posBufferCopy.Apply();
* normBufferCopy.Apply();
* //idBufferCopy.Apply();
*
* Color[] pixelsPositions = posBufferCopy.GetPixels();
* Color[] pixelsNormals = normBufferCopy.GetPixels();
*
* GPURaycastInfo[] hits = new GPURaycastInfo[width * height];
* GPURaycastInfo hitInfo = new GPURaycastInfo();
*
* for (int i = 0; i < hits.Length; i++)
* {
* positionRead = pixelsPositions[i];
* normalRead = pixelsNormals[i];
*
* hitInfo.position = new Vector3(positionRead.r, positionRead.g, positionRead.b);
* hitInfo.normal = new Vector3(normalRead.r, normalRead.g, normalRead.b);
* hitInfo.IsHitted = positionRead.a > 0;
* hits[i] = hitInfo;
* }
*
* GameObject.DestroyImmediate(posBufferCopy, true);
* GameObject.DestroyImmediate(normBufferCopy, true);
*/
return(hits);
}
private static bool RaycastWithoutRenderer(Camera camera, Vector2 pixelPosition, out GPURaycastInfo hitInfo)
{
hitInfo.position = Vector3.zero;
hitInfo.normal = Vector3.zero;
hitInfo.hittedRenderer = null;
hitInfo.IsHitted = false;
int cameraPixelWidth = camera.targetTexture == null ? camera.pixelWidth : camera.targetTexture.width;
int cameraPixelHeight = camera.targetTexture == null ? camera.pixelHeight : camera.targetTexture.height;
if (lastCamera != camera || gpuRaycastCamera == null)
{
gpuRaycastCamera = new GameObject("GPURaycastCamera", typeof(Camera)).GetComponent <Camera>();
gpuRaycastCamera.gameObject.SetActive(false);
gpuRaycastCamera.enabled = false;
gpuRaycastCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;
}
gpuRaycastCamera.cameraType = CameraType.Game;
gpuRaycastCamera.targetTexture = null;
gpuRaycastCamera.transform.position = camera.transform.position;
gpuRaycastCamera.transform.rotation = camera.transform.rotation;
gpuRaycastCamera.clearFlags = CameraClearFlags.Color;
gpuRaycastCamera.backgroundColor = Color.clear;
gpuRaycastCamera.renderingPath = RenderingPath.Forward;
gpuRaycastCamera.rect = camera.rect;
gpuRaycastCamera.fieldOfView = camera.fieldOfView;
gpuRaycastCamera.aspect = camera.aspect;
lastCamera = camera;
Vector2 uv = new Vector2(pixelPosition.x / camera.pixelWidth, pixelPosition.y / camera.pixelHeight);
#if UNITY_EDITOR_OSX
uv.y -= 0.5f;
uv.y *= 2f;
uv.x *= 2f;
#endif
if (uv.x < 0 || uv.x > 1 || uv.y < 0 || uv.y > 1)
{
return(false);
}
if (LastPixelWidth != cameraPixelWidth || LastPixelHeight != cameraPixelHeight || worldPosBuffer == null || worldNormBuffer == null || idBuffer == null)
{
if (worldPosBuffer != null)
{
worldPosBuffer.Release();
GameObject.DestroyImmediate(worldPosBuffer, true);
}
if (worldNormBuffer != null)
{
worldNormBuffer.Release();
GameObject.DestroyImmediate(worldNormBuffer, true);
}
if (idBuffer != null)
{
idBuffer.Release();
GameObject.DestroyImmediate(idBuffer, true);
}
worldPosBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 16, RenderTextureFormat.ARGBFloat);
worldNormBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
idBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
worldPosBuffer.Create();
worldNormBuffer.Create();
idBuffer.Create();
mrtBuffers = new RenderBuffer[3];
mrtBuffers[0] = worldPosBuffer.colorBuffer;
mrtBuffers[1] = worldNormBuffer.colorBuffer;
mrtBuffers[2] = idBuffer.colorBuffer;
LastPixelWidth = cameraPixelWidth;
LastPixelHeight = cameraPixelHeight;
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
}
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
gpuRaycastCamera.RenderWithShader(gpuRaycastShader, "");
int idx = (int)(uv.x * cameraPixelWidth);
int idy = (int)(uv.y * cameraPixelHeight);
var lastActive = RenderTexture.active;
RenderTexture.active = worldPosBuffer;
posBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = worldNormBuffer;
normBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = idBuffer;
idBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = lastActive;
posBufferCopy.Apply();
normBufferCopy.Apply();
idBufferCopy.Apply();
positionRead = posBufferCopy.GetPixel(0, 0);
normalRead = normBufferCopy.GetPixel(0, 0);
idRead = idBufferCopy.GetPixel(0, 0);
hitInfo.position = new Vector3(positionRead.r, positionRead.g, positionRead.b);
hitInfo.normal = new Vector3(normalRead.r, normalRead.g, normalRead.b);
hitInfo.IsHitted = positionRead.a > 0;
return(hitInfo.IsHitted);
}
public static bool Raycast(Camera camera, Vector2 pixelPosition, bool renderersHitInfo, out GPURaycastInfo hitInfo)
{
InitRes();
if (renderersHitInfo)
{
return(Raycast(camera, pixelPosition, out hitInfo));
}
else
{
return(RaycastWithoutRenderer(camera, pixelPosition, out hitInfo));
}
}
private static bool Raycast(Camera camera, Vector2 pixelPosition, out GPURaycastInfo hitInfo)
{
hitInfo.position = Vector3.zero;
hitInfo.normal = Vector3.zero;
hitInfo.hittedRenderer = null;
hitInfo.IsHitted = false;
int cameraPixelWidth = camera.targetTexture == null ? camera.pixelWidth : camera.targetTexture.width;
int cameraPixelHeight = camera.targetTexture == null ? camera.pixelHeight : camera.targetTexture.height;
if (lastCamera != camera || gpuRaycastCamera == null)
{
gpuRaycastCamera = new GameObject("GPURaycastCamera", typeof(Camera)).GetComponent <Camera>();
gpuRaycastCamera.gameObject.SetActive(false);
gpuRaycastCamera.enabled = false;
gpuRaycastCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;
}
gpuRaycastCamera.cameraType = CameraType.Game;
gpuRaycastCamera.targetTexture = null;
gpuRaycastCamera.transform.position = camera.transform.position;
gpuRaycastCamera.transform.rotation = camera.transform.rotation;
gpuRaycastCamera.clearFlags = CameraClearFlags.Color;
gpuRaycastCamera.backgroundColor = Color.clear;
gpuRaycastCamera.renderingPath = RenderingPath.Forward;
gpuRaycastCamera.rect = camera.rect;
lastCamera = camera;
cameraPlanes = GeometryUtility.CalculateFrustumPlanes(gpuRaycastCamera);
allSceneRenderers = GameObject.FindObjectsOfType <Renderer>();
visibleRenderers = allSceneRenderers.ToList().FindAll((r) =>
{
return(GeometryUtility.TestPlanesAABB(cameraPlanes, r.bounds));
}).ToArray();
for (int i = 0; i < visibleRenderers.Length; i++)
{
visibleRenderers[i].GetPropertyBlock(propertyBlock);
propertyBlock.SetInt("ObjectID", i);
visibleRenderers[i].SetPropertyBlock(propertyBlock);
}
if (LastPixelWidth != cameraPixelWidth || LastPixelHeight != cameraPixelHeight || worldPosBuffer == null || worldNormBuffer == null || idBuffer == null)
{
if (worldPosBuffer != null)
{
worldPosBuffer.Release();
GameObject.DestroyImmediate(worldPosBuffer, true);
}
if (worldNormBuffer != null)
{
worldNormBuffer.Release();
GameObject.DestroyImmediate(worldNormBuffer, true);
}
if (idBuffer != null)
{
idBuffer.Release();
GameObject.DestroyImmediate(idBuffer, true);
}
worldPosBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 16, RenderTextureFormat.ARGBFloat);
worldNormBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
idBuffer = new RenderTexture(cameraPixelWidth, cameraPixelHeight, 0, RenderTextureFormat.ARGBFloat);
worldPosBuffer.Create();
worldNormBuffer.Create();
idBuffer.Create();
mrtBuffers = new RenderBuffer[3];
mrtBuffers[0] = worldPosBuffer.colorBuffer;
mrtBuffers[1] = worldNormBuffer.colorBuffer;
mrtBuffers[2] = idBuffer.colorBuffer;
LastPixelWidth = cameraPixelWidth;
LastPixelHeight = cameraPixelHeight;
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
}
gpuRaycastCamera.SetTargetBuffers(mrtBuffers, worldPosBuffer.depthBuffer);
gpuRaycastCamera.RenderWithShader(gpuRaycastShader, "");
Vector2 uv = new Vector2(pixelPosition.x / camera.pixelWidth, pixelPosition.y / camera.pixelHeight);
if (uv.x < 0 || uv.x > 1 || uv.y < 0 || uv.y > 1)
{
return(false);
}
int idx = (int)(uv.x * cameraPixelWidth);
int idy = (int)(uv.y * cameraPixelHeight);
var lastActive = RenderTexture.active;
RenderTexture.active = worldPosBuffer;
posBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = worldNormBuffer;
normBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = idBuffer;
idBufferCopy.ReadPixels(new Rect(idx, idy, 1, 1), 0, 0);
RenderTexture.active = lastActive;
posBufferCopy.Apply();
normBufferCopy.Apply();
idBufferCopy.Apply();
positionRead = posBufferCopy.GetPixel(0, 0);
normalRead = normBufferCopy.GetPixel(0, 0);
idRead = idBufferCopy.GetPixel(0, 0);
int objectID = Mathf.RoundToInt(idRead.r) - 1;
hitInfo.position = new Vector3(positionRead.r, positionRead.g, positionRead.b);
hitInfo.normal = new Vector3(normalRead.r, normalRead.g, normalRead.b);
if (objectID >= 0 && objectID < visibleRenderers.Length)
{
hitInfo.hittedRenderer = visibleRenderers[objectID];
}
hitInfo.IsHitted = positionRead.a > 0;
return(hitInfo.IsHitted);
}
