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Fix sun shadows invalidate when view rotates

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This commit is contained in:
Wojtek Figat
2024-04-14 23:51:20 +02:00
parent 25f3cef8c3
commit cf23892bd4
1 changed files with 9 additions and 4 deletions
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13
Source/Engine/Renderer/ShadowsPass.cpp
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@@ -19,6 +19,8 @@
#include "Engine/Renderer/Lightmaps.h"
#endif
#define SHADOWS_POSITION_ERROR METERS_TO_UNITS(0.1f)
#define SHADOWS_ROTATION_ERROR 0.9999f
#define SHADOWS_MAX_TILES 6
#define SHADOWS_MIN_RESOLUTION 16
#define SHADOWS_MAX_STATIC_ATLAS_CAPACITY_TO_DEFRAG 0.7f
@@ -139,6 +141,7 @@ struct ShadowAtlasLightCache
Float3 Direction;
float Distance;
Float4 CascadeSplits;
Float3 ViewDirection;
void Set(const RenderView& view, const RenderLightData& light, const Float4& cascadeSplits = Float4::Zero)
{
@@ -153,6 +156,7 @@ struct ShadowAtlasLightCache
{
// Sun
Position = view.Position;
ViewDirection = view.Direction;
CascadeSplits = cascadeSplits;
}
else
@@ -243,7 +247,7 @@ struct ShadowAtlasLight
!Math::NearEqual(Cache.ShadowsUpdateRate, light.ShadowsUpdateRate) ||
!Math::NearEqual(Cache.ShadowsUpdateRateAtDistance, light.ShadowsUpdateRateAtDistance) ||
Cache.ShadowFrame != light.ShadowFrame ||
Float3::Dot(Cache.Direction, light.Direction) < 0.999999f)
Float3::Dot(Cache.Direction, light.Direction) < SHADOWS_ROTATION_ERROR)
{
// Invalidate
Cache.StaticValid = false;
@@ -251,8 +255,9 @@ struct ShadowAtlasLight
if (light.IsDirectionalLight)
{
// Sun
if (!Float3::NearEqual(Cache.Position, view.Position, 1.0f) ||
!Float4::NearEqual(Cache.CascadeSplits, CascadeSplits))
if (!Float3::NearEqual(Cache.Position, view.Position, SHADOWS_POSITION_ERROR) ||
!Float4::NearEqual(Cache.CascadeSplits, CascadeSplits) ||
Float3::Dot(Cache.ViewDirection, view.Direction) < SHADOWS_ROTATION_ERROR)
{
// Invalidate
Cache.StaticValid = false;
@@ -262,7 +267,7 @@ struct ShadowAtlasLight
{
// Local light
const auto& localLight = (const RenderLocalLightData&)light;
if (!Float3::NearEqual(Cache.Position, light.Position, METERS_TO_UNITS(0.1f)) ||
if (!Float3::NearEqual(Cache.Position, light.Position, SHADOWS_POSITION_ERROR) ||
!Math::NearEqual(Cache.Radius, localLight.Radius))
{
// Invalidate