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Adding better decal culling (#6519)

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* Adding better decal culling

Signed-off-by: mrieggeramzn <mriegger@amazon.com>

* removing accidental commit

Signed-off-by: mrieggeramzn <mriegger@amazon.com>

* Breja's suggestion for decal sphere size estimation

Signed-off-by: mrieggeramzn <mriegger@amazon.com>

* Removing unused variable

Signed-off-by: mrieggeramzn <mriegger@amazon.com>
This commit is contained in:
mrieggeramzn
2022-01-04 08:27:43 -08:00
committed by GitHub
parent 6e2ccbc055
commit cab09dc4ae
1 changed files with 9 additions and 6 deletions
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Gems/Atom/Feature/Common/Assets/Shaders/LightCulling/LightCulling.azsl
+9 -6
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@@ -368,16 +368,19 @@ void CullDecals(uint groupIndex, TileLightData tileLightData, float3 aabb_center
float3 decalPosition = WorldToView_Point(decal.m_position);
// just wrapping a bounding sphere around a cube for now to get a minor perf boost. i.e. the sphere radius is sqrt(x*x + y*y + z*z)
// ATOM-4224 - try AABB-AABB and implement depth binning for the decals
float maxHalfSize = max(max(decal.m_halfSize.x, decal.m_halfSize.y), decal.m_halfSize.z);
float boundingSphereRadiusSqr = maxHalfSize * maxHalfSize * 3;
// ATOM-4224 - try AABB-AABB
float boundingSphereRadiusSqr = dot(decal.m_halfSize, decal.m_halfSize);
bool potentiallyIntersects = TestSphereVsAabb(decalPosition, boundingSphereRadiusSqr, aabb_center, aabb_extents);
if (potentiallyIntersects)
{
// Implement and profile fine-grained light culling testing
// ATOM-3732
MarkLightAsVisibleInSharedMemory(decalIndex, 0xFFFF);
uint inside = 0;
float2 minmax = ComputePointLightMinMaxZ(sqrt(boundingSphereRadiusSqr), decalPosition);
if (IsObjectInsideTile(tileLightData, minmax, inside))
{
MarkLightAsVisibleInSharedMemory(decalIndex, inside);
}
}
}
}