您最多选择25个主题
主题必须以中文或者字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
74 行
2.5 KiB
74 行
2.5 KiB
#pragma kernel MaterialFlagsGen_Write MATERIALFLAGSGEN=MaterialFlagsGen_Write
|
|
#pragma kernel MaterialFlagsGen_Or MATERIALFLAGSGEN=MaterialFlagsGen_Or USE_OR
|
|
|
|
// #pragma enable_d3d11_debug_symbols
|
|
|
|
#include "CoreRP/ShaderLibrary/common.hlsl"
|
|
#include "ShaderBase.hlsl"
|
|
#include "LightLoop.cs.hlsl"
|
|
|
|
#include "../../ShaderVariables.hlsl"
|
|
#define UNITY_MATERIAL_LIT // Need to be define before including Material.hlsl
|
|
#include "../../Material/Material.hlsl" // This includes Material.hlsl
|
|
#include "../../Lighting/LightDefinition.cs.hlsl"
|
|
|
|
#define USE_MATERIAL_FEATURE_FLAGS
|
|
#define NR_THREADS 64
|
|
|
|
CBUFFER_START(UnityMaterialFlags)
|
|
uint2 g_viDimensions;
|
|
uint g_BaseFeatureFlags;
|
|
CBUFFER_END
|
|
|
|
groupshared uint ldsFeatureFlags;
|
|
RWStructuredBuffer<uint> g_TileFeatureFlags;
|
|
|
|
TEXTURE2D(_StencilTexture); // DXGI_FORMAT_R8_UINT is not supported by Unity
|
|
|
|
[numthreads(NR_THREADS, 1, 1)]
|
|
void MATERIALFLAGSGEN(uint threadID : SV_GroupIndex, uint3 u3GroupID : SV_GroupID)
|
|
{
|
|
uint2 tileIDX = u3GroupID.xy;
|
|
|
|
uint iWidth = g_viDimensions.x;
|
|
uint iHeight = g_viDimensions.y;
|
|
uint nrTilesX = (iWidth+15)/16;
|
|
|
|
uint2 viTilLL = 16*tileIDX;
|
|
|
|
float2 invScreenSize = float2(1.0f / iWidth, 1.0f / iHeight);
|
|
|
|
if (threadID == 0)
|
|
{
|
|
ldsFeatureFlags = 0;
|
|
}
|
|
GroupMemoryBarrierWithGroupSync();
|
|
|
|
uint materialFeatureFlags = g_BaseFeatureFlags; // Contain all lightFeatures or 0 (depends if we enable light classification or not)
|
|
[unroll]
|
|
for(int i = 0; i < 4; i++)
|
|
{
|
|
int idx = i * NR_THREADS + threadID;
|
|
uint2 uCrd = min( uint2(viTilLL.x + (idx & 0xf), viTilLL.y + (idx >> 4)), uint2(iWidth - 1, iHeight - 1));
|
|
|
|
// StencilTexture here contain the result of testing if we are not equal to stencil usage NoLighting. i.e (stencil value != NoLighting). The 1.0 mean true.
|
|
// This test if we are the sky/background or a forward opaque (which tag the stencil as NoLighting)
|
|
if (LOAD_TEXTURE2D(_StencilTexture, uCrd).r == 1.0)
|
|
{
|
|
PositionInputs posInput = GetPositionInput(uCrd, invScreenSize);
|
|
materialFeatureFlags |= MATERIAL_FEATURE_FLAGS_FROM_GBUFFER(posInput.positionSS);
|
|
}
|
|
}
|
|
|
|
InterlockedOr(ldsFeatureFlags, materialFeatureFlags); //TODO: driver might optimize this or we might have to do a manual reduction
|
|
GroupMemoryBarrierWithGroupSync();
|
|
|
|
if(threadID == 0)
|
|
{
|
|
#ifdef USE_OR
|
|
g_TileFeatureFlags[tileIDX.y * nrTilesX + tileIDX.x] |= ldsFeatureFlags;
|
|
#else // Use in case we have disabled light classification
|
|
g_TileFeatureFlags[tileIDX.y * nrTilesX + tileIDX.x] = ldsFeatureFlags;
|
|
#endif
|
|
}
|
|
}
|