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Dir light test

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max
2022-04-03 17:47:44 +02:00
parent 20c2847d23
commit f153209bbc
6 changed files with 91 additions and 58 deletions
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16
Assets/VolumetricFog/Shaders/InjectLightingAndDensity.compute
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@ -33,6 +33,10 @@ float3 _DirLightDir;
#ifdef DIR_LIGHT_SHADOWS
float _DirLightShadows;
float _ESMExponentDirLight;
float _DirLightOffset;
float _VSMBias;
float _DirBias;
struct ShadowParams
{
float4x4 worldToShadow[4];
@ -258,7 +262,6 @@ float ChebyshevUpperBound(float2 moments, float mean)
{
// Compute variance
float variance = moments.y - (moments.x * moments.x);
float _VSMBias = 0.001f;
variance = max(variance, _VSMBias * mean * mean);
// Compute probabilistic upper bound
@ -298,12 +301,19 @@ float3 DirectionalLight(float3 pos)
if (_DirLightShadows > 0.0)
{
float4 cascadeWeights = getCascadeWeights_splitSpheres(pos);
float4 samplePos = getShadowCoord(pos, cascadeWeights).xyzw;
float3 spos = pos + (_DirLightDir * _DirLightOffset);
float4 samplePos = getShadowCoord(spos, cascadeWeights).xyzw;
//---
//att *= _DirectionalShadowmap.SampleLevel(sampler_DirectionalShadowmap, samplePos.xy, 0).r < samplePos.z;
//---
float2 shadowmap = _DirectionalShadowmap.SampleLevel(sampler_DirectionalShadowmap, samplePos.xy, 0).xy;
att *= ChebyshevUpperBound(shadowmap.xy, samplePos.z / samplePos.w);
float shadow = ChebyshevUpperBound(shadowmap.xy, samplePos.z / samplePos.w);
shadow = saturate(lerp(shadow, 1.0, _DirBias));
att = shadow;
//---
//float depth = exp(-40.0 * samplePos.z);
//att = saturate(shadowmap.r * depth);