public BitonicMergeSort(ComputeShader compute)
{
_compute = compute;
_kernelInit = compute.FindKernel(KERNEL_INIT);
_kernelSort = compute.FindKernel(KERNEL_SORT);
_kernelSortInt = compute.FindKernel(KERNEL_SORT_INT);
}
public LifeService(ComputeShader compute, int capacity)
{
_compute = compute;
_kernelSimulate = compute.FindKernel(ShaderConst.KERNEL_SIMULATE_LIFE);
_kernelUpload = compute.FindKernel(ShaderConst.KERNEL_UPLOAD_LIFE);
_lifes = new float[capacity];
Lifes = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(float)));
Lifes.SetData(_lifes);
_uploader = new ComputeBuffer(INIT_CAPACITY, Marshal.SizeOf(typeof(float)));
ShaderUtil.CalcWorkSize(capacity, out SimSizeX, out SimSizeY, out SimSizeZ);
}
public BroadPhase(ComputeShader compute, ComputeShader computeSort, LifeService l, PositionService p)
{
var capacity = l.Lifes.count;
_lifes = l;
_positions = p;
_kernelInitYs = compute.FindKernel(ShaderConst.KERNEL_INIT_BROADPHASE);
_kernelSolve = compute.FindKernel (ShaderConst.KERNEL_SOVLE_BROADPHASE);
_compute = compute;
_sort = new BitonicMergeSort(computeSort);
Keys = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(uint)));
_ys = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(float)));
Bands = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(Band)));
}
void CreateAssets()
{
_material = Resources.Load<Material>("ParticleInstancingMat");
_shaderCompute = Resources.Load<ComputeShader>("ParticleMeshCompute");
_initKernelId = _shaderCompute.FindKernel(kInitKernel);
_updateKernelId = _shaderCompute.FindKernel(kUpdateKernel);
_instancesCount = _mesh.vertices.Length/3;
_numThreadGroupsX = Mathf.CeilToInt(((float)_instancesCount) / ((float)kNumThreadsX));
Debug.Log("_numThreadGroupsX " + _numThreadGroupsX);
}
public VelocityService(ComputeShader compute, int capacity)
{
_kernelUpload = compute.FindKernel(ShaderConst.KERNEL_UPLOAD_VELOCITY);
_kernelClampVelocity = compute.FindKernel(ShaderConst.KERNEL_CLAMP_VELOCITY);
_compute = compute;
_velocities = new Vector2[capacity];
V0 = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(Vector2)));
V1 = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(Vector2)));
V0.SetData(_velocities);
V1.SetData(_velocities);
_uploader = new ComputeBuffer(INITIAL_CAP, Marshal.SizeOf(_velocities[0]));
ShaderUtil.CalcWorkSize(capacity, out SimSizeX, out SimSizeY, out SimSizeZ);
}
void CreateAssets()
{
_material = Resources.Load<Material>("ParticleImageMat");
_shaderCompute = Resources.Load<ComputeShader>("ParticleImageCompute");
_initImageKernelId = _shaderCompute.FindKernel(kInitParticlesKernel);
_updateParticlesKernel = _shaderCompute.FindKernel(kUpdateParticlesKernel);
_numThreadGroupsX = Mathf.CeilToInt(_image.width / kNumThreadsX);
_numThreadGroupsY = Mathf.CeilToInt(_image.height / kNumThreadsY);
_numThreadGroupsZ = Mathf.Max(Mathf.CeilToInt(_imageLayers / kNumThreadsX), 1);
_totalNumParticles = _image.width * _image.height * _imageLayers;
}
/// <summary>
/// Uses the GPU to generate a RenderTexture where the pixels in the texture represent noise.
/// Set the octaves variable before calling this to a desired value.
/// </summary>
/// <returns>RenderTexture</returns>
/// <param name="width"> Width of the texture to generate. </param>
/// <param name="height"> Height of the texture to generate. </param>
/// <param name="noiseOffsetX"> X Coordinate of the offset for the noise on the texture. </param>
/// <param name="noiseOffsetY"> Y Coordinate of the offset for the noise on the texture. </param>
/// <param name="noiseScale"> Value to scale the noise coordinates by. </param>
/// <param name="normalize"> Whether or not to remap the noise from (-1, 1) to (0, 1). </param>
public static UnityEngine.RenderTexture GetNoiseRenderTexture(int width, int height, float noiseOffsetX = 0, float noiseOffsetY = 0, float noiseScale = 0.01f, bool normalize = true)
{
UnityEngine.RenderTexture retTex = new UnityEngine.RenderTexture(width, height, 0);
retTex.enableRandomWrite = true;
retTex.Create();
UnityEngine.ComputeShader shader = UnityEngine.Resources.Load(shaderPath) as UnityEngine.ComputeShader;
if (shader == null)
{
UnityEngine.Debug.LogError(noShaderMsg);
return(null);
}
int[] resInts = { width, height };
int kernel = shader.FindKernel("ComputeNoise");
shader.SetTexture(kernel, "Result", retTex);
SetShaderVars(shader, new UnityEngine.Vector2(noiseOffsetX, noiseOffsetY), normalize, noiseScale);
shader.SetInts("reses", resInts);
UnityEngine.ComputeBuffer permBuffer = new UnityEngine.ComputeBuffer(perm.Length, 4);
permBuffer.SetData(perm);
shader.SetBuffer(kernel, "perm", permBuffer);
shader.Dispatch(kernel, width / 14, height / 15, 1);
permBuffer.Release();
return(retTex);
}
public BoundsChecker(ComputeShader compute, LifeService l, PositionService p)
{
_kernel = compute.FindKernel(ShaderConst.KERNEL_CHECK_BOUNDS);
_compute = compute;
_lifes = l;
_positions = p;
}
public GridService(ComputeShader compute, Grid g, HashService h)
{
_compute = compute;
_grid = g;
_hashes = h;
_kernelInit = compute.FindKernel(ShaderConst.KERNEL_INIT_GRID);
_kernelConstruct = compute.FindKernel(ShaderConst.KERNEL_CONSTRUCT_GRID);
var gridCellCount = g.nx * g.ny;
StartData = new uint[gridCellCount];
EndData = new uint[gridCellCount];
_hashGridStart = new ComputeBuffer(gridCellCount, Marshal.SizeOf(typeof(uint)));
_hashGridEnd = new ComputeBuffer(gridCellCount, Marshal.SizeOf(typeof(uint)));
_hashGridStart.SetData (StartData);
_hashGridEnd.SetData (EndData);
}
static public int FindKernel(IntPtr l)
{
try {
#if DEBUG
var method = System.Reflection.MethodBase.GetCurrentMethod();
string methodName = GetMethodName(method);
#if UNITY_5_5_OR_NEWER
UnityEngine.Profiling.Profiler.BeginSample(methodName);
#else
Profiler.BeginSample(methodName);
#endif
#endif
UnityEngine.ComputeShader self = (UnityEngine.ComputeShader)checkSelf(l);
System.String a1;
checkType(l, 2, out a1);
var ret = self.FindKernel(a1);
pushValue(l, true);
pushValue(l, ret);
return(2);
}
catch (Exception e) {
return(error(l, e));
}
#if DEBUG
finally {
#if UNITY_5_5_OR_NEWER
UnityEngine.Profiling.Profiler.EndSample();
#else
Profiler.EndSample();
#endif
}
#endif
}
public VelocitySimulation(ComputeShader compute, VelocityService v, ConstantService c)
{
_kernelSimulate = compute.FindKernel(ShaderConst.KERNEL_SIMULATE_VELOCITY);
_compute = compute;
_velocities = v;
_constants = c;
}
public PositionSimulation(ComputeShader compute, VelocityService v, PositionService p)
{
_kernelSimulate = compute.FindKernel(ShaderConst.KERNEL_SIMULATE_POSITION);
_compute = compute;
_velocities = v;
_positions = p;
}
public void Init()
{
_numParticlesX = _particleGroupsX * kNumThreadsX;
_numParticlesY = _particleGroupsY * kNumThreadsY;
_numParticles = _numParticlesX * _numParticlesY;
_currentCopiedVertices = 0;
_particleMaterial = Resources.Load<Material>("GPUParticleMat");
_computeShader = Resources.Load<ComputeShader>("ComputeShaders/GPUParticleUpdater");
_kernelMoveParticles = _computeShader.FindKernel(kKernelMoveParticles);
_particlesData = new Particle[_numParticles];
InitBuffer(_particlesData);
for (int i = 0; i < _particlesData.Length; ++i)
{
float id = ((float)i) / 10000.1f;
CreateParticle(id);
}
// Set ComputeShader Parameters
_particlesBuffer = new ComputeBuffer(_particlesData.Length, System.Runtime.InteropServices.Marshal.SizeOf(typeof(GPUParticleSystem.Particle)));
_particlesBuffer.SetData(_particlesData);
_computeShader.SetBuffer(_kernelMoveParticles, "_ParticlesBuffer", _particlesBuffer);
_computeShader.SetFloat("_Width", _numParticlesX);
_computeShader.SetFloat("_Height", _numParticlesY);
// Set Shader Parameters
_particleMaterial.SetBuffer("_ParticlesBuffer", _particlesBuffer);
}
public WallCollisionSolver(ComputeShader compute, VelocityService v, PositionService p, WallService w)
{
_kernel = compute.FindKernel(ShaderConst.KERNEL_SOLVE_WALL_COLLISION);
_compute = compute;
_velocities = v;
_positions = p;
_walls = w;
}
public PolygonCollisionSolver(ComputeShader c, VelocityService v, PositionService p, LifeService l, PolygonColliderService poly)
{
_compute = c;
_kernel = c.FindKernel(ShaderConst.KERNEL_SOLVE_POLYGON_COLLISION);
_velocities = v;
_positions = p;
_lifes = l;
_polygons = poly;
}
public ParticleCollisionSolver(ComputeShader compute, VelocityService v, PositionService p, LifeService l, BroadPhase b)
{
_kernel = compute.FindKernel(ShaderConst.KERNEL_SOLVE_PARTICLE_COLLISION);
_compute = compute;
_velocities = v;
_positions = p;
_lifes = l;
_broadphase = b;
}
public static void ReadFromRenderTexture(RenderTexture tex, int channels, ComputeBuffer buffer, ComputeShader readData)
{
if(tex == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - RenderTexture is null");
return;
}
if(buffer == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - buffer is null");
return;
}
if(readData == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Computer shader is null");
return;
}
if(channels < 1 || channels > 4)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Channels must be 1, 2, 3, or 4");
return;
}
int kernel = -1;
int depth = 1;
string D = "2D";
string C = "C" + channels.ToString();
if(tex.isVolume)
{
depth = tex.volumeDepth;
D = "3D";
}
kernel = readData.FindKernel("read"+D+C);
if(kernel == -1)
{
Debug.Log("CBUtility::ReadFromRenderTexture - could not find kernel " + "read"+D+C);
return;
}
int width = tex.width;
int height = tex.height;
//set the compute shader uniforms
readData.SetTexture(kernel, "_Tex"+D, tex);
readData.SetInt("_Width", width);
readData.SetInt("_Height", height);
readData.SetBuffer(kernel, "_Buffer"+D+C, buffer); //tex will be write into this
//run the compute shader
readData.Dispatch(kernel, Mathf.Max(1, width/8), Mathf.Max(1, height/8), Mathf.Max(1, depth/8));
}
public PositionService(ComputeShader compute, int capacity)
{
_kernelUpload = compute.FindKernel(ShaderConst.KERNEL_UPLOAD_POSITION);
_compute = compute;
_positions = new Vector2[capacity];
P0 = new ComputeBuffer(capacity, Marshal.SizeOf(_positions[0]));
P0.SetData(_positions);
_uploader = new ComputeBuffer(INITIAL_CAP, Marshal.SizeOf(_positions[0]));
ShaderUtil.CalcWorkSize(capacity, out SimSizeX, out SimSizeY, out SimSizeZ);
}
public HashService(ComputeShader compute, LifeService l, PositionService p)
{
_compute = compute;
_lifes = l;
_positions = p;
_kernelInitHashes = compute.FindKernel(ShaderConst.KERNEL_INIT_HASHES);
HashData = new int[l.Lifes.count];
Hashes = new ComputeBuffer(l.Lifes.count, Marshal.SizeOf(typeof(int)));
Hashes.SetData (HashData);
}
public void Init()
{
_grassShader = Resources.Load<Shader>("Shaders/GrassGeneratorShader");
_grassMaterial = Resources.Load<Material>("GrassGeneratorMat");
_noiseTex = Resources.Load<Texture>("Noise");
if(_noiseTex == null)
{
Debug.LogError("Not found noise");
}
_grassComputeShader = Resources.Load<ComputeShader>("ComputeShaders/GrassComputeShader");
_initGrassKernelId = _grassComputeShader.FindKernel(kInitGrassKernel);
_updateGrassKernelId = _grassComputeShader.FindKernel(kUpdateGrassKernel);
_numGrassItems = _numGroupGrassX*_numGroupGrassY*kThreadsX*kThreadsY;
_grassBuffer = new ComputeBuffer(_numGrassItems, System.Runtime.InteropServices.Marshal.SizeOf(typeof(GrassData)));
_obstaclesBuffer = new ComputeBuffer(kMaxObstacles, System.Runtime.InteropServices.Marshal.SizeOf(typeof(ObstacleData)));
_grassComputeShader.SetFloat("_Width", _numGroupGrassX*kThreadsX);
_grassComputeShader.SetFloat("_Height", _numGroupGrassY*kThreadsY);
_grassComputeShader.SetTexture(_initGrassKernelId, "_NoiseTex", _noiseTex);
_grassMaterial.SetTexture("_NoiseTex", _noiseTex);
_grassMaterial.SetFloat("_Width", _numGroupGrassX*kThreadsX);
_grassMaterial.SetFloat("_Height", _numGroupGrassY*kThreadsY);
_grassComputeShader.SetBuffer(_initGrassKernelId, "_GrassBuffer", _grassBuffer);
_grassComputeShader.SetBuffer(_updateGrassKernelId, "_GrassBuffer", _grassBuffer);
_grassComputeShader.SetBuffer(_updateGrassKernelId, "_ObstaclesBuffer", _obstaclesBuffer);
_grassComputeShader.SetInt("_NumObstacles", 0);
_grassMaterial.SetBuffer("_GrassBuffer", _grassBuffer);
_grassComputeShader.Dispatch(_initGrassKernelId, _numGroupGrassX, _numGroupGrassY, 1);
#if GRASS_CPU
_grassDataTestCPU = new GrassData[_numGrassItems];
_grassBuffer.GetData(_grassDataTestCPU);
#endif
_isInit = true;
}
static public int FindKernel(IntPtr l)
{
try {
UnityEngine.ComputeShader self = (UnityEngine.ComputeShader)checkSelf(l);
System.String a1;
checkType(l, 2, out a1);
var ret = self.FindKernel(a1);
pushValue(l, true);
pushValue(l, ret);
return(2);
}
catch (Exception e) {
return(error(l, e));
}
}
static public int FindKernel(IntPtr l)
{
try{
UnityEngine.ComputeShader self = (UnityEngine.ComputeShader)checkSelf(l);
System.String a1;
checkType(l, 2, out a1);
System.Int32 ret = self.FindKernel(a1);
pushValue(l, ret);
return(1);
}
catch (Exception e) {
LuaDLL.luaL_error(l, e.ToString());
return(0);
}
}
public HashGrid(ComputeShader compute, ComputeShader computeSort, LifeService l, PositionService p, GridService.Grid g)
{
var capacity = l.Lifes.count;
_compute = compute;
_lifes = l;
_positions = p;
_kernelSolve = compute.FindKernel (ShaderConst.KERNEL_SOVLE_COLLISION_DETECTION);
_sort = new BitonicMergeSort(computeSort);
_keys = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(uint)));
CollisionData = new Collision[capacity];
Collisions = new ComputeBuffer(capacity, Marshal.SizeOf(typeof(Collision)));
_hashes = new HashService(compute, l, p);
_grid = new GridService(compute, g, _hashes);
}
public static void ReadFromRenderTexture(RenderTexture tex, int channels, ComputeBuffer buffer, ComputeShader readData)
{
if (tex == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - RenderTexture is null");
return;
}
if (buffer == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - buffer is null");
return;
}
if (readData == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Computer shader is null");
return;
}
if (channels < 1 || channels > 4)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Channels must be 1, 2, 3, or 4");
return;
}
if (!tex.IsCreated())
{
Debug.Log("CBUtility::ReadFromRenderTexture - tex has not been created (Call Create() on tex)");
return;
}
int num = 1;
int num2 = readData.FindKernel(CBUtility.readNames2D[channels - 1, 0]);
readData.SetTexture(num2, CBUtility.readNames2D[channels - 1, 1], tex);
readData.SetBuffer(num2, CBUtility.readNames2D[channels - 1, 2], buffer);
if (num2 == -1)
{
Debug.Log("CBUtility::ReadFromRenderTexture - could not find kernels");
return;
}
int width = tex.width;
int height = tex.height;
readData.SetInt("_Width", width);
readData.SetInt("_Height", height);
readData.SetInt("_Depth", num);
int num3 = (width % 8 != 0) ? 1 : 0;
int num4 = (height % 8 != 0) ? 1 : 0;
int num5 = (num % 8 != 0) ? 1 : 0;
readData.Dispatch(num2, Mathf.Max(1, width / 8 + num3), Mathf.Max(1, height / 8 + num4), Mathf.Max(1, num / 8 + num5));
}
public RotationService(ComputeShader c, VelocityService v, LifeService l, float radius, Vector2 angularSpeedRange)
{
Count = v.V0.count;
_compute = c;
_velocities = v;
_lifes = l;
_kernelVelocityBasedRotate = c.FindKernel(KERNEL_VELOCITY_BASED_ROTATE);
_data = new Vector4[Count];
_rotations = new ComputeBuffer(Count, Marshal.SizeOf(typeof(Vector4)));
for (var i = 0; i < Count; i++)
_data[i] = QuaternionExtension.IDENTITY;
Upload();
ShaderUtil.CalcWorkSize(Count, out SimSizeX, out SimSizeY, out SimSizeZ);
_angularSpeedData = new float[ShaderConst.WARP_SIZE];
_angularSpeed = new ComputeBuffer(_angularSpeedData.Length, Marshal.SizeOf(typeof(float)));
UpdateAngularSpeed(angularSpeedRange);
}
/// <summary>
/// Uses the GPU to process an array of 4D coordinates for noise and return an array with the noise at the specified coordinates.
/// </summary>
/// <returns>Float array</returns>
/// <param name="positions"> Array of coordinates to process. </param>
/// <param name="noiseScale"> Value to scale the noise coordinates by. </param>
/// <param name="normalize"> Whether or not to remap the noise from (-1, 1) to (0, 1). </param>
public static float[] NoiseArrayGPU(UnityEngine.Vector4[] positions, float noiseScale = 0.01f, bool normalize = true)
{
UnityEngine.ComputeShader shader = UnityEngine.Resources.Load(shaderPath) as UnityEngine.ComputeShader;
if (shader == null)
{
UnityEngine.Debug.LogError(noShaderMsg);
return(null);
}
int kernel = shader.FindKernel("ComputeNoiseArray");
SetShaderVars(shader, UnityEngine.Vector2.zero, normalize, noiseScale);
shader.SetInt("dimension", 4);
UnityEngine.ComputeBuffer permBuffer = new UnityEngine.ComputeBuffer(perm.Length, 4);
permBuffer.SetData(perm);
shader.SetBuffer(kernel, "perm", permBuffer);
UnityEngine.ComputeBuffer posBuffer = new UnityEngine.ComputeBuffer(positions.Length, 16);
posBuffer.SetData(positions);
shader.SetBuffer(kernel, "float4Array", posBuffer);
UnityEngine.ComputeBuffer outputBuffer = new UnityEngine.ComputeBuffer(positions.Length, 4);
shader.SetBuffer(kernel, "outputArray", outputBuffer);
shader.Dispatch(kernel, positions.Length / 14, 1, 1);
float[] outputData = new float[positions.Length];
outputBuffer.GetData(outputData);
permBuffer.Release();
posBuffer.Release();
outputBuffer.Release();
return(outputData);
}
public static void ReadSingleFromRenderTexture(RenderTexture tex, float x, float y, float z, ComputeBuffer buffer, ComputeShader readData, bool useBilinear)
{
if (tex == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - RenderTexture is null");
return;
}
if (buffer == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - buffer is null");
return;
}
if (readData == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - Computer shader is null");
return;
}
if (!tex.IsCreated())
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - tex has not been created (Call Create() on tex)");
return;
}
int num = 1;
int num2;
if (useBilinear)
{
num2 = readData.FindKernel("readSingle2D");
}
else
{
num2 = readData.FindKernel("readSingleBilinear2D");
}
readData.SetTexture(num2, "_Tex2D", tex);
readData.SetBuffer(num2, "BufferSingle2D", buffer);
if (num2 == -1)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - could not find kernels");
return;
}
int width = tex.width;
int height = tex.height;
readData.SetInt("_IdxX", (int)x);
readData.SetInt("_IdxY", (int)y);
readData.SetInt("_IdxZ", (int)z);
readData.SetVector("_UV", new Vector4(x / (float)(width - 1), y / (float)(height - 1), z / (float)(num - 1), 0f));
readData.Dispatch(num2, 1, 1, 1);
}
public static void ReadSingleFromRenderTexture(RenderTexture tex, float x, float y, float z, ComputeBuffer buffer, ComputeShader readData, bool useBilinear)
{
if(tex == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - RenderTexture is null");
return;
}
if(buffer == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - buffer is null");
return;
}
if(readData == null)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - Computer shader is null");
return;
}
if(!tex.IsCreated())
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - tex has not been created (Call Create() on tex)");
return;
}
int kernel = -1;
int depth = 1;
//if(tex.isVolume)
//{
// depth = tex.volumeDepth;
//
// if(useBilinear)
// kernel = readData.FindKernel("readSingle3D");
// else
// kernel = readData.FindKernel("readSingleBilinear3D");
//
// readData.SetTexture(kernel, "_Tex3D", tex);
// readData.SetBuffer(kernel, "BufferSingle3D", buffer);
//}
//else
//{
if(useBilinear)
kernel = readData.FindKernel("readSingle2D");
else
kernel = readData.FindKernel("readSingleBilinear2D");
readData.SetTexture(kernel, "_Tex2D", tex);
readData.SetBuffer(kernel, "BufferSingle2D", buffer);
//}
if(kernel == -1)
{
Debug.Log("CBUtility::ReadSingleFromRenderTexture - could not find kernels");
return;
}
int width = tex.width;
int height = tex.height;
//used for point sampling
readData.SetInt("_IdxX", (int)x);
readData.SetInt("_IdxY", (int)y);
readData.SetInt("_IdxZ", (int)z);
//used for bilinear sampling
readData.SetVector("_UV", new Vector4( x / (float)(width-1), y / (float)(height-1), z / (float)(depth-1), 0.0f));
readData.Dispatch(kernel, 1, 1, 1);
}
/*
static string[,] readNames3D = new string[,]
{
{"read3DC1", "_Tex3D", "_Buffer3DC1"},
{"read3DC2", "_Tex3D", "_Buffer3DC2"},
{"read3DC3", "_Tex3D", "_Buffer3DC3"},
{"read3DC4", "_Tex3D", "_Buffer3DC4"}
};
*/
public static void ReadFromRenderTexture(RenderTexture tex, int channels, ComputeBuffer buffer, ComputeShader readData)
{
if(tex == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - RenderTexture is null");
return;
}
if(buffer == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - buffer is null");
return;
}
if(readData == null)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Computer shader is null");
return;
}
if(channels < 1 || channels > 4)
{
Debug.Log("CBUtility::ReadFromRenderTexture - Channels must be 1, 2, 3, or 4");
return;
}
if(!tex.IsCreated())
{
Debug.Log("CBUtility::ReadFromRenderTexture - tex has not been created (Call Create() on tex)");
return;
}
int kernel = -1;
int depth = 1;
//if(tex.isVolume)
//{
// depth = tex.volumeDepth;
// kernel = readData.FindKernel(readNames3D[channels - 1, 0]);
// readData.SetTexture(kernel, readNames3D[channels - 1, 1], tex);
// readData.SetBuffer(kernel, readNames3D[channels - 1, 2], buffer);
//}
//else
//{
kernel = readData.FindKernel(readNames2D[channels - 1, 0]);
readData.SetTexture(kernel, readNames2D[channels - 1, 1], tex);
readData.SetBuffer(kernel, readNames2D[channels - 1, 2], buffer);
//}
if(kernel == -1)
{
Debug.Log("CBUtility::ReadFromRenderTexture - could not find kernels");
return;
}
int width = tex.width;
int height = tex.height;
//set the compute shader uniforms
readData.SetInt("_Width", width);
readData.SetInt("_Height", height);
readData.SetInt("_Depth", depth);
//run the compute shader. Runs in threads of 8 so non divisible by 8 numbers will need
//some extra threadBlocks. This will result in some unneeded threads running
int padX = (width%8 == 0) ? 0 : 1;
int padY = (height%8 == 0) ? 0 : 1;
int padZ = (depth%8 == 0) ? 0 : 1;
readData.Dispatch(kernel, Mathf.Max(1,width/8 + padX), Mathf.Max(1, height/8 + padY), Mathf.Max(1, depth/8 + padZ));
}
public static void WriteIntoRenderTexture(RenderTexture tex, int channels, ComputeBuffer buffer, ComputeShader writeData)
{
if(tex == null)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - RenderTexture is null");
return;
}
if(buffer == null)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - buffer is null");
return;
}
if(writeData == null)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - Computer shader is null");
return;
}
if(channels < 1 || channels > 4)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - Channels must be 1, 2, 3, or 4");
return;
}
if(!tex.enableRandomWrite)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - you must enable random write on render texture");
return;
}
int kernel = -1;
int depth = 1;
string D = "2D";
string C = "C" + channels.ToString();
if(tex.isVolume)
{
depth = tex.volumeDepth;
D = "3D";
}
kernel = writeData.FindKernel("write"+D+C);
if(kernel == -1)
{
Debug.Log("CBUtility::WriteIntoRenderTexture - could not find kernel " + "write"+D+C);
return;
}
int width = tex.width;
int height = tex.height;
//set the compute shader uniforms
writeData.SetTexture(kernel, "_Des"+D+C, tex);
writeData.SetInt("_Width", width);
writeData.SetInt("_Height", height);
writeData.SetBuffer(kernel, "_Buffer"+D+C, buffer);
//run the compute shader
writeData.Dispatch(kernel, Mathf.Max(1, width/8), Mathf.Max(1, height/8), Mathf.Max(1, depth/8));
}