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Partial commit of compute updating

/vr_fptl_sandbox
robbiesri 8 年前
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43c6af23
共有 4 个文件被更改，包括 200 次插入 和 58 次删除
  1. 235
      Assets/ScriptableRenderPipeline/fptl/FptlLighting.cs
  2. 4
      Assets/ScriptableRenderPipeline/fptl/TiledLightingTemplate.hlsl
  3. 6
      Assets/ScriptableRenderPipeline/fptl/lightlistbuild-bigtile.compute
  4. 13
      Assets/ScriptableRenderPipeline/fptl/lightlistbuild.compute

235
Assets/ScriptableRenderPipeline/fptl/FptlLighting.cs
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using System;
using System.Collections.Generic;
using UnityEngine.VR;
using UnityEngine.VR;
namespace UnityEngine.Experimental.Rendering.Fptl
{
public class FptlLightingInstance : RenderPipeline

private static ComputeBuffer s_AABBBoundsBuffer;
private static ComputeBuffer s_LightList;
private static ComputeBuffer s_DirLightList;
private static ComputeBuffer s_UnifiedLightDataBuffer; // VR
private static int s_UnifiedLightDataEyeOffset; // VR
private static ComputeBuffer s_UnifiedDirLightList; // VR
private static int s_UnifiedDirLightListEyeOffset; // VR
private static ComputeBuffer s_BigTileLightList; // used for pre-pass coarse culling on 64x64 tiles
private static int s_GenListPerBigTileKernel;

static Matrix4x4 WorldToCamera(Camera camera)
{
return GetFlipMatrix() * camera.worldToCameraMatrix;
}
static Matrix4x4 CameraToWorld(Camera camera)
}
static Matrix4x4 StereoWorldToCamera(Camera camera, Camera.StereoscopicEye eye)
{
//return GetFlipMatrix() * camera.worldToCameraMatrix;
return GetFlipMatrix() * camera.GetStereoViewMatrix(eye);
}
static Matrix4x4 CameraToWorld(Camera camera)
{
return camera.cameraToWorldMatrix * GetFlipMatrix();
}

return camera.projectionMatrix * GetFlipMatrix();
}
static int UpdateDirectionalLights(Camera camera, IList<VisibleLight> visibleLights)
static Matrix4x4 CameraStereoProjection(Camera camera, Camera.StereoscopicEye eye)
{
return (camera.GetStereoProjectionMatrix(eye) * GetFlipMatrix());
}
static int UpdateDirectionalLights(Camera camera, IList<VisibleLight> visibleLights)
{
var dirLightCount = 0;
var lights = new List<DirectionalLight>();

m_Shadow3X3PCFTerms[3] = new Vector4(-flTexelEpsilonX, -flTexelEpsilonY, 0.0f, 0.0f);
}
int GenerateSourceLightBuffers(Camera camera, CullResults inputs)
// VR - since the final deferred pass needs to access the light lists per eye
// We need to output a combined two eye light list to source from
// along with an offset index into the right eye portion of the light list
int GenerateSourceLightBuffers(Camera camera, CullResults inputs, Camera.StereoscopicEye eye)
{
var probes = inputs.visibleReflectionProbes;
//ReflectionProbe[] probes = Object.FindObjectsOfType<ReflectionProbe>();

var lightData = new SFiniteLightData[numVolumes];
var boundData = new SFiniteLightBound[numVolumes];
var worldToView = WorldToCamera(camera);
var boundData = new SFiniteLightBound[numVolumes];
//var worldToView = WorldToCamera(camera);
Matrix4x4 worldToView;
if (stereoDoublewide)
{
worldToView = StereoWorldToCamera(camera, eye);
}
else
{
worldToView = WorldToCamera(camera);
}
bool isNegDeterminant = Vector3.Dot(worldToView.GetColumn(0), Vector3.Cross(worldToView.GetColumn(1), worldToView.GetColumn(2)))<0.0f; // 3x3 Determinant.
uint shadowLightIndex = 0;

{
stereoDoublewide = false;
}
}
}
void ExecuteRenderLoop(Camera camera, CullResults cullResults, ScriptableRenderContext loop)
{
CheckVRState();
int w, h;
void GetRTWH(Camera camera, out int width, out int height)
{
w = cachedStereoDesc.width;
h = cachedStereoDesc.height;
width = cachedStereoDesc.width;
height = cachedStereoDesc.height;
w = camera.pixelWidth;
h = camera.pixelHeight;
}
width = camera.pixelWidth;
height = camera.pixelHeight;
}
}
void GetEyeRTWH(Camera camera, out int width, out int height)
{
GetRTWH(camera, out width, out height);
if (stereoDoublewide)
{
width = width / 2;
}
}
void ExecuteRenderLoop(Camera camera, CullResults cullResults, ScriptableRenderContext loop)
{
CheckVRState();
int w, h;
// might be able to use GetEyeRTWH
GetRTWH(camera, out w, out h);
//if (stereoDoublewide)
//{
// w = cachedStereoDesc.width;
// h = cachedStereoDesc.height;
//}
//else
//{
// w = camera.pixelWidth;
// h = camera.pixelHeight;
//}
if (stereoDoublewide)
{
// VR - with double wide, our texture is double eye width

loop.StopMultiEye(camera);
}
// camera to screen matrix (and it's inverse)
var proj = CameraProjection(camera);
var temp = new Matrix4x4();
temp.SetRow(0, new Vector4(0.5f * w, 0.0f, 0.0f, 0.5f * w));
temp.SetRow(1, new Vector4(0.0f, 0.5f * h, 0.0f, 0.5f * h));
temp.SetRow(2, new Vector4(0.0f, 0.0f, 0.5f, 0.5f));
temp.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
var projscr = temp * proj;
var invProjscr = projscr.inverse;
// build per tile light lists
var numLights = GenerateSourceLightBuffers(camera, cullResults);
BuildPerTileLightLists(camera, loop, numLights, projscr, invProjscr);
// render shadow maps (for mobile shadow map rendering should happen before we render g-buffer).
// on GCN it needs to be after to leverage async compute since we need the depth-buffer for optimal light list building.
if(k_UseAsyncCompute)
{
RenderShadowMaps(cullResults, loop);
loop.SetupCameraProperties(camera);
}
// Push all global params
var numDirLights = UpdateDirectionalLights(camera, cullResults.visibleLights);
PushGlobalParams(camera, loop, CameraToWorld(camera), projscr, invProjscr, numDirLights);
int numLights = 0, numDirLights = 0;
if (stereoDoublewide)
{
var unifiedLightData = new List<SFiniteLightData>();
for (int eye = 0; eye < 2; eye++)
{
// camera to screen matrix (and it's inverse)
var proj = CameraStereoProjection(camera, (Camera.StereoscopicEye)eye);
int eyeWidth = w / 2;
var temp = new Matrix4x4();
// VR - I don't think I need to offset this because we are just trying to get
// working with an eye texture sized projection here, not the eye texture itself
temp.SetRow(0, new Vector4(0.5f * eyeWidth, 0.0f, 0.0f, 0.5f * eyeWidth));
temp.SetRow(1, new Vector4(0.0f, 0.5f * h, 0.0f, 0.5f * h));
temp.SetRow(2, new Vector4(0.0f, 0.0f, 0.5f, 0.5f));
temp.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
var projscr = temp * proj;
var invProjscr = projscr.inverse;
// build per tile light lists
// VR - we gotta stash out each eye's light list!
numLights = GenerateSourceLightBuffers(camera, cullResults, (Camera.StereoscopicEye)eye);
var generatedLightData = new SFiniteLightData[numLights];
s_LightDataBuffer.GetData(generatedLightData);
unifiedLightData.AddRange(generatedLightData);
if (0 == eye)
{
// this is the offset point in the final combined light data buffer
s_UnifiedLightDataEyeOffset = numLights;
}
BuildPerTileLightLists(camera, loop, numLights, projscr, invProjscr, (Camera.StereoscopicEye)eye);
// VR - same here, we need to double up the directional light lists
numDirLights = UpdateDirectionalLights(camera, cullResults.visibleLights);
}
s_UnifiedLightDataBuffer.SetData(unifiedLightData.ToArray());
// VR - make this VR aware of course!
// Push all global params
PushGlobalParams(camera, loop, CameraToWorld(camera), projscr, invProjscr, numDirLights);
// pulled out async shadow maps (for now)
}
else
{
// camera to screen matrix (and it's inverse)
var proj = CameraProjection(camera);
var temp = new Matrix4x4();
temp.SetRow(0, new Vector4(0.5f * w, 0.0f, 0.0f, 0.5f * w));
temp.SetRow(1, new Vector4(0.0f, 0.5f * h, 0.0f, 0.5f * h));
temp.SetRow(2, new Vector4(0.0f, 0.0f, 0.5f, 0.5f));
temp.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
var projscr = temp * proj;
var invProjscr = projscr.inverse;
// build per tile light lists
numLights = GenerateSourceLightBuffers(camera, cullResults, Camera.StereoscopicEye.Left);
BuildPerTileLightLists(camera, loop, numLights, projscr, invProjscr, Camera.StereoscopicEye.Left);
// render shadow maps (for mobile shadow map rendering should happen before we render g-buffer).
// on GCN it needs to be after to leverage async compute since we need the depth-buffer for optimal light list building.
if (k_UseAsyncCompute)
{
RenderShadowMaps(cullResults, loop);
loop.SetupCameraProperties(camera);
}
// Push all global params
numDirLights = UpdateDirectionalLights(camera, cullResults.visibleLights);
PushGlobalParams(camera, loop, CameraToWorld(camera), projscr, invProjscr, numDirLights);
}
if (stereoActive)
{

// do deferred lighting
DoTiledDeferredLighting(camera, loop, numLights, numDirLights);
// VR - no forward in the test scene
// render opaques using tiled forward
RenderForward(cullResults, camera, loop, true); // opaques only (requires a depth pre-pass)

cmd.DispatchCompute(buildPerVoxelLightListShader, s_GenListPerVoxelKernel, nrTilesClustX, nrTilesClustY, 1);
}
void BuildPerTileLightLists(Camera camera, ScriptableRenderContext loop, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr)
{
var w = camera.pixelWidth;
var h = camera.pixelHeight;
void BuildPerTileLightLists(Camera camera, ScriptableRenderContext loop, int numLights, Matrix4x4 projscr, Matrix4x4 invProjscr, Camera.StereoscopicEye eye)
{
//var w = camera.pixelWidth;
//var h = camera.pixelHeight;
int w, h;
GetEyeRTWH(camera, out w, out h);
var numTilesX = (w + 15) / 16;
var numTilesY = (h + 15) / 16;
var numBigTilesX = (w + 63) / 64;

// generate screen-space AABBs (used for both fptl and clustered).
if (numLights != 0)
{
var proj = CameraProjection(camera);
{
//var proj = CameraProjection(camera);
Matrix4x4 proj;
if (stereoDoublewide)
{
proj = CameraStereoProjection(camera, eye);
}
else
{
proj = CameraProjection(camera);
}
var temp = new Matrix4x4();
temp.SetRow(0, new Vector4(1.0f, 0.0f, 0.0f, 0.0f));
temp.SetRow(1, new Vector4(0.0f, 1.0f, 0.0f, 0.0f));

cmd.DispatchCompute(buildScreenAABBShader, s_GenAABBKernel, (numLights + 7) / 8, 1, 1);
}
// VR - Ok, for VR, we can do this work just fine, but we need to make sure we offset into the correct spot in the light list!
// enable coarse 2D pass on 64x64 tiles (used for both fptl and clustered).
if(enableBigTilePrepass)
{

SetMatrixCS(cmd, buildPerBigTileLightListShader, "g_mInvScrProjection", invProjscr);
cmd.SetComputeFloatParam(buildPerBigTileLightListShader, "g_fNearPlane", camera.nearClipPlane);
cmd.SetComputeFloatParam(buildPerBigTileLightListShader, "g_fFarPlane", camera.farClipPlane);
cmd.SetComputeBufferParam(buildPerBigTileLightListShader, s_GenListPerBigTileKernel, "g_vLightList", s_BigTileLightList);
cmd.SetComputeIntParam(buildPerBigTileLightListShader, "g_iEye", (int)eye);
cmd.SetComputeBufferParam(buildPerBigTileLightListShader, s_GenListPerBigTileKernel, "g_vLightList", s_BigTileLightList);
// VR - Here, we need to do a couple other things
// We need to make sure we land in the right spot for the light list gen
// and we also need to sample from the depth texture correctly
if( usingFptl ) // optimized for opaques only
{
cmd.SetComputeIntParams(buildPerTileLightListShader, "g_viDimensions", new int[2] { w, h });

cmd.SetComputeTextureParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_depth_tex", new RenderTargetIdentifier(s_CameraDepthTexture));
cmd.SetComputeIntParam(buildPerTileLightListShader, "g_iEye", (int)eye);
cmd.SetComputeTextureParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_depth_tex", new RenderTargetIdentifier(s_CameraDepthTexture));
cmd.SetComputeBufferParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_vLightList", s_LightList);
if(enableBigTilePrepass) cmd.SetComputeBufferParam(buildPerTileLightListShader, s_GenListPerTileKernel, "g_vBigTileLightList", s_BigTileLightList);
cmd.DispatchCompute(buildPerTileLightListShader, s_GenListPerTileKernel, numTilesX, numTilesY, 1);

cmd.SetGlobalFloat("g_widthRT", (float)camera.pixelWidth);
cmd.SetGlobalFloat("g_heightRT", (float)camera.pixelHeight);
// VR - turn these into VR enabled arrays
// VR - make sure this list is the unified light data list
cmd.SetGlobalBuffer("g_vLightData", s_LightDataBuffer);
cmd.SetGlobalTexture("_spotCookieTextures", m_CookieTexArray.GetTexCache());

cmd.SetGlobalFloat("_reflRootHdrDecodeMult", defdecode.x);
cmd.SetGlobalFloat("_reflRootHdrDecodeExp", defdecode.y);
// VR- is this even needed anymore?
if(enableBigTilePrepass)
cmd.SetGlobalBuffer("g_vBigTileLightList", s_BigTileLightList);

}
}
// VR - these needs to be VR adjusted
cmd.SetGlobalFloat("g_nNumDirLights", numDirLights);
cmd.SetGlobalBuffer("g_dirLightData", s_DirLightList);

4
Assets/ScriptableRenderPipeline/fptl/TiledLightingTemplate.hlsl
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#ifndef __TILEDLIGHTINGTEMPLATE_H__
#define __TILEDLIGHTINGTEMPLATE_H__
#include "LightingTemplate.hlsl" // change order to get access to unity_StereoEyeIndex
#include "LightingTemplate.hlsl"

6
Assets/ScriptableRenderPipeline/fptl/lightlistbuild-bigtile.compute
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uniform float4x4 g_mScrProjection;
uniform float g_fNearPlane;
uniform float g_fFarPlane;
uniform int g_iEye;
StructuredBuffer<float3> g_vBoundsBuffer : register( t1 );
StructuredBuffer<SFiniteLightData> g_vLightData : register( t2 );

GroupMemoryBarrierWithGroupSync();
iNrCoarseLights = lightOffs;
int offs = tileIDX.y*nrBigTilesX + tileIDX.x;
// VR - adjust this to offset into the correct portion of the light list
// right eye will get second half
//int offs = tileIDX.y*nrBigTilesX + tileIDX.x;
int offs = tileIDX.y*nrBigTilesX + tileIDX.x + (eye * nrBigTilesX * nrBigTilesY);
for(i=t; i<(iNrCoarseLights+1); i+=NR_THREADS)
g_vLightList[MAX_NR_BIGTILE_LIGHTS_PLUSONE*offs + i] = i==0 ? iNrCoarseLights : lightsListLDS[i-1];

13
Assets/ScriptableRenderPipeline/fptl/lightlistbuild.compute
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uniform uint2 g_viDimensions;
uniform float4x4 g_mInvScrProjection;
uniform float4x4 g_mScrProjection;
uniform int g_iEye;
Texture2D g_depth_tex : register( t0 );

{
int idx = i * NR_THREADS + t;
uint2 uCrd = min( uint2(viTilLL.x+(idx&0xf), viTilLL.y+(idx>>4)), uint2(iWidth-1, iHeight-1) );
// VR - we need to fetch from the correct half of the depth texture
// for a double wide VR texture, the real width is actually double iWidth, so we can just add that
uCrd.x += (uint)(g_iEye * iWidth);
const float fDepth = FetchDepth(g_depth_tex, uCrd);
vLinDepths[i] = GetLinearDepth(fDepth);
if(fDepth<VIEWPORT_SCALE_Z) // if not skydome

// build coarse list using AABB
#ifdef USE_TWO_PASS_TILED_LIGHTING
int NrBigTilesX = (nrTilesX+3)>>2;
const int bigTileIdx = (tileIDX.y>>2)*NrBigTilesX + (tileIDX.x>>2); // map the idx to 64x64 tiles
int NrBigTilesY = (nrTilesY + 3) >> 2;
// since we are fetching a value from the big tile list, and it's double long
// in VR, we need to use eye to index into the correct half
//const int bigTileIdx = (tileIDX.y>>2)*NrBigTilesX + (tileIDX.x>>2); // map the idx to 64x64 tiles
const int bigTileIdx = (tileIDX.y >> 2)*NrBigTilesX + (tileIDX.x >> 2)
+ (eye * NrBigTilesX * NrBigTilesY); // map the idx to 64x64 tiles
int nrBigTileLights = g_vBigTileLightList[MAX_NR_BIGTILE_LIGHTS_PLUSONE*bigTileIdx+0];
for(int l0=(int) t; l0<(int) nrBigTileLights; l0 += NR_THREADS)
{

// write lights to global buffers
int localOffs=0;
// make sure the base index here corrects in the appropriate eye half
int offs = tileIDX.y*nrTilesX + tileIDX.x;
for(int category=0; category<NR_LIGHT_MODELS; category++)

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