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sebastienlagarde 7 年前
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共有 2 个文件被更改，包括 7 次插入 和 337 次删除
  1. 7
      com.unity.render-pipelines.high-definition/HDRP/Lighting/LightLoop/LightLoopDef.hlsl.orig.meta
  2. 337
      com.unity.render-pipelines.high-definition/HDRP/Lighting/LightLoop/LightLoopDef.hlsl.orig

7
com.unity.render-pipelines.high-definition/HDRP/Lighting/LightLoop/LightLoopDef.hlsl.orig.meta
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fileFormatVersion: 2
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userData:
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assetBundleVariant:

337
com.unity.render-pipelines.high-definition/HDRP/Lighting/LightLoop/LightLoopDef.hlsl.orig
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#include "LightLoop.cs.hlsl"
#include "../../Sky/SkyVariables.hlsl"
StructuredBuffer<uint> g_vLightListGlobal; // don't support Buffer yet in unity
#define DWORD_PER_TILE 16 // See dwordsPerTile in LightLoop.cs, we have roomm for 31 lights and a number of light value all store on 16 bit (ushort)
#define MAX_ENV2D_LIGHT 32
CBUFFER_START(UnityTilePass)
uint _NumTileFtplX;
uint _NumTileFtplY;
// these uniforms are only needed for when OPAQUES_ONLY is NOT defined
// but there's a problem with our front-end compilation of compute shaders with multiple kernels causing it to error
//#ifdef USE_CLUSTERED_LIGHTLIST
float4x4 g_mInvScrProjection; // TODO: remove, unused in HDRP
float g_fClustScale;
float g_fClustBase;
float g_fNearPlane;
float g_fFarPlane;
int g_iLog2NumClusters; // We need to always define these to keep constant buffer layouts compatible
uint g_isLogBaseBufferEnabled;
//#endif
//#ifdef USE_CLUSTERED_LIGHTLIST
uint _NumTileClusteredX;
uint _NumTileClusteredY;
CBUFFER_END
StructuredBuffer<uint> g_vLayeredOffsetsBuffer; // don't support Buffer yet in unity
StructuredBuffer<float> g_logBaseBuffer; // don't support Buffer yet in unity
//#endif
#ifdef USE_INDIRECT
StructuredBuffer<uint> g_TileFeatureFlags;
#endif
StructuredBuffer<DirectionalLightData> _DirectionalLightDatas;
StructuredBuffer<LightData> _LightDatas;
StructuredBuffer<EnvLightData> _EnvLightDatas;
StructuredBuffer<ShadowData> _ShadowDatas;
// Used by directional and spot lights
TEXTURE2D_ARRAY(_CookieTextures);
// Used by point lights
TEXTURECUBE_ARRAY_ABSTRACT(_CookieCubeTextures);
// Use texture array for reflection (or LatLong 2D array for mobile)
TEXTURECUBE_ARRAY_ABSTRACT(_EnvCubemapTextures);
TEXTURE2D_ARRAY(_Env2DTextures);
float4x4 _Env2DCaptureVP[MAX_ENV2D_LIGHT];
// XRTODO: Need to stereo-ize access
TEXTURE2D(_DeferredShadowTexture);
CBUFFER_START(UnityPerLightLoop)
uint _DirectionalLightCount;
uint _PunctualLightCount;
uint _AreaLightCount;
uint _EnvLightCount;
uint _EnvProxyCount;
int _EnvLightSkyEnabled; // TODO: make it a bool
CBUFFER_END
// LightLoopContext is not visible from Material (user should not use these properties in Material file)
// It allow the lightloop to have transmit sampling information (do we use atlas, or texture array etc...)
struct LightLoopContext
{
int sampleReflection;
ShadowContext shadowContext;
float contactShadow; // Currently we support only one contact shadow per view
};
//-----------------------------------------------------------------------------
// Cookie sampling functions
// ----------------------------------------------------------------------------
// Used by directional and spot lights.
float3 SampleCookie2D(LightLoopContext lightLoopContext, float2 coord, int index, bool repeat)
{
if (repeat)
{
// TODO: add MIP maps to combat aliasing?
return SAMPLE_TEXTURE2D_ARRAY_LOD(_CookieTextures, s_linear_repeat_sampler, coord, index, 0).rgb;
}
else // clamp
{
// TODO: add MIP maps to combat aliasing?
return SAMPLE_TEXTURE2D_ARRAY_LOD(_CookieTextures, s_linear_clamp_sampler, coord, index, 0).rgb;
}
}
// Used by point lights.
float3 SampleCookieCube(LightLoopContext lightLoopContext, float3 coord, int index)
{
// TODO: add MIP maps to combat aliasing?
return SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_CookieCubeTextures, s_linear_clamp_sampler, coord, index, 0).rgb;
}
//-----------------------------------------------------------------------------
// Reflection probe / Sky sampling function
// ----------------------------------------------------------------------------
#define SINGLE_PASS_CONTEXT_SAMPLE_REFLECTION_PROBES 0
#define SINGLE_PASS_CONTEXT_SAMPLE_SKY 1
// The EnvLightData of the sky light contains a bunch of compile-time constants.
// This function sets them directly to allow the compiler to propagate them and optimize the code.
EnvLightData InitSkyEnvLightData(int envIndex)
{
EnvLightData output;
ZERO_INITIALIZE(EnvLightData, output);
output.influenceShapeType = ENVSHAPETYPE_SKY;
// 31 bit index, 1 bit cache type
output.envIndex = ENVCACHETYPE_CUBEMAP | (envIndex << 1);
output.influenceForward = float3(0.0, 0.0, 1.0);
output.influenceUp = float3(0.0, 1.0, 0.0);
output.influenceRight = float3(1.0, 0.0, 0.0);
output.influencePositionWS = float3(0.0, 0.0, 0.0);
output.weight = 1.0;
output.multiplier = 1.0;
// proxy
output.proxyForward = float3(0.0, 0.0, 1.0);
output.proxyUp = float3(0.0, 1.0, 0.0);
output.proxyRight = float3(1.0, 0.0, 0.0);
output.minProjectionDistance = 65504.0f;
return output;
}
bool IsEnvIndexCubemap(int index) { return (index & 1) == ENVCACHETYPE_CUBEMAP; }
bool IsEnvIndexTexture2D(int index) { return (index & 1) == ENVCACHETYPE_TEXTURE2D; }
// Note: index is whatever the lighting architecture want, it can contain information like in which texture to sample (in case we have a compressed BC6H texture and an uncompressed for real time reflection ?)
// EnvIndex can also be use to fetch in another array of struct (to atlas information etc...).
// Cubemap : texCoord = direction vector
// Texture2D : texCoord = projectedPositionWS - lightData.capturePosition
float4 SampleEnv(LightLoopContext lightLoopContext, int index, float3 texCoord, float lod)
{
// 31 bit index, 1 bit cache type
uint cacheType = index & 1;
index = index >> 1;
float4 color = float4(0.0, 0.0, 0.0, 1.0);
// This code will be inlined as lightLoopContext is hardcoded in the light loop
if (lightLoopContext.sampleReflection == SINGLE_PASS_CONTEXT_SAMPLE_REFLECTION_PROBES)
{
if (cacheType == ENVCACHETYPE_TEXTURE2D)
{
//_Env2DCaptureVP is in capture space
float3 ndc = ComputeNormalizedDeviceCoordinatesWithZ(texCoord, _Env2DCaptureVP[index]);
color.rgb = SAMPLE_TEXTURE2D_ARRAY_LOD(_Env2DTextures, s_trilinear_clamp_sampler, ndc.xy, index, lod).rgb;
color.a = any(ndc.xyz < 0) || any(ndc.xyz > 1) ? 0.0 : 1.0;
}
else if (cacheType == ENVCACHETYPE_CUBEMAP)
{
color.rgb = SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_EnvCubemapTextures, s_trilinear_clamp_sampler, texCoord, index, lod).rgb;
}
}
else // SINGLE_PASS_SAMPLE_SKY
{
color.rgb = SampleSkyTexture(texCoord, lod).rgb;
}
return color;
}
//-----------------------------------------------------------------------------
// Single Pass and Tile Pass
// ----------------------------------------------------------------------------
#ifdef LIGHTLOOP_TILE_PASS
// Calculate the offset in global light index light for current light category
int GetTileOffset(PositionInputs posInput, uint lightCategory)
{
uint2 tileIndex = posInput.tileCoord;
return (tileIndex.y + lightCategory * _NumTileFtplY) * _NumTileFtplX + tileIndex.x;
}
void GetCountAndStartTile(PositionInputs posInput, uint lightCategory, out uint start, out uint lightCount)
{
const int tileOffset = GetTileOffset(posInput, lightCategory);
// The first entry inside a tile is the number of light for lightCategory (thus the +0)
lightCount = g_vLightListGlobal[DWORD_PER_TILE * tileOffset + 0] & 0xffff;
start = tileOffset;
}
#ifdef USE_FPTL_LIGHTLIST
uint GetTileSize()
{
return TILE_SIZE_FPTL;
}
void GetCountAndStart(PositionInputs posInput, uint lightCategory, out uint start, out uint lightCount)
{
GetCountAndStartTile(posInput, lightCategory, start, lightCount);
}
uint FetchIndex(uint tileOffset, uint lightIndex)
{
const uint lightIndexPlusOne = lightIndex + 1; // Add +1 as first slot is reserved to store number of light
// Light index are store on 16bit
return (g_vLightListGlobal[DWORD_PER_TILE * tileOffset + (lightIndexPlusOne >> 1)] >> ((lightIndexPlusOne & 1) * DWORD_PER_TILE)) & 0xffff;
}
#elif defined(USE_CLUSTERED_LIGHTLIST)
#include "ClusteredUtils.hlsl"
uint GetTileSize()
{
return TILE_SIZE_CLUSTERED;
}
float GetLightClusterMinLinearDepth(uint2 tileIndex, uint clusterIndex)
{
float logBase = g_fClustBase;
if (g_isLogBaseBufferEnabled)
{
// XRTODO: Stereo-ize access to g_logBaseBuffer
logBase = g_logBaseBuffer[tileIndex.y * _NumTileClusteredX + tileIndex.x];
}
return ClusterIdxToZFlex(clusterIndex, logBase, g_isLogBaseBufferEnabled != 0);
}
uint GetLightClusterIndex(uint2 tileIndex, float linearDepth)
{
float logBase = g_fClustBase;
if (g_isLogBaseBufferEnabled)
{
const uint logBaseIndex = GenerateLogBaseBufferIndex(tileIndex, _NumTileClusteredX, _NumTileClusteredY, unity_StereoEyeIndex);
logBase = g_logBaseBuffer[logBaseIndex];
}
return SnapToClusterIdxFlex(linearDepth, logBase, g_isLogBaseBufferEnabled != 0);
}
void GetCountAndStartCluster(uint2 tileIndex, uint clusterIndex, uint lightCategory, out uint start, out uint lightCount)
{
int nrClusters = (1 << g_iLog2NumClusters);
const int idx = GenerateLayeredOffsetBufferIndex(lightCategory, tileIndex, clusterIndex, _NumTileClusteredX, _NumTileClusteredY, nrClusters, unity_StereoEyeIndex);
uint dataPair = g_vLayeredOffsetsBuffer[idx];
start = dataPair & 0x7ffffff;
lightCount = (dataPair >> 27) & 31;
}
void GetCountAndStartCluster(PositionInputs posInput, uint lightCategory, out uint start, out uint lightCount)
{
// Note: XR depends on unity_StereoEyeIndex already being defined,
// which means ShaderVariables.hlsl needs to be defined ahead of this!
uint2 tileIndex = posInput.tileCoord;
uint clusterIndex = GetLightClusterIndex(tileIndex, posInput.linearDepth);
GetCountAndStartCluster(tileIndex, clusterIndex, lightCategory, start, lightCount);
}
void GetCountAndStart(PositionInputs posInput, uint lightCategory, out uint start, out uint lightCount)
{
GetCountAndStartCluster(posInput, lightCategory, start, lightCount);
}
uint FetchIndex(uint tileOffset, uint lightIndex)
{
return g_vLightListGlobal[tileOffset + lightIndex];
}
#endif // USE_FPTL_LIGHTLIST
#else
uint GetTileSize()
{
return 1;
}
uint FetchIndex(uint globalOffset, uint lightIndex)
{
return globalOffset + lightIndex;
}
#endif // LIGHTLOOP_TILE_PASS
uint FetchIndexWithBoundsCheck(uint start, uint count, uint i)
{
if (i < count)
{
return FetchIndex(start, i);
}
else
{
return UINT_MAX;
}
}
LightData FetchLight(uint start, uint i)
{
int j = FetchIndex(start, i);
return _LightDatas[j];
}
EnvLightData FetchEnvLight(uint start, uint i)
{
int j = FetchIndex(start, i);
return _EnvLightDatas[j];
}
float GetContactShadow(LightLoopContext lightLoopContext, int contactShadowIndex)
{
// Here we take the contact shadow value using the contactShadowIndex of the light
// If the contact shadows are diasbled, it's value is -1 so this function will only
// return 1
// On the other hand, if the feature is active it's value is 0 so we can return
// the value fetched at the begining of LightLoop()
<<<<<<< HEAD
return max(lightLoopContext.shadowContext.contactShadow, abs(contactShadowIndex));
}
=======
return max(lightLoopContact.contactShadow, abs(contactShadowIndex));
}
>>>>>>> master
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