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Fix sun shadows when direction is perfectly vertical

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#3614
This commit is contained in:
Wojtek Figat
2025-09-20 23:52:04 +02:00
parent 9cc44825c6
commit 1c581bceaf
1 changed files with 4 additions and 1 deletions
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5
Source/Engine/Renderer/ShadowsPass.cpp
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@@ -946,7 +946,10 @@ void ShadowsPass::SetupLight(ShadowsCustomBuffer& shadows, RenderContext& render
Matrix shadowView, shadowProjection, shadowVP, cullingVP;
// Create view matrix
Matrix::LookAt(frustumCenter + light.Direction * minExtents.Z, frustumCenter, Float3::Up, shadowView);
Float3 up = Float3::Up;
if (Math::Abs(Float3::Dot(light.Direction, up)) > 0.9f)
up = Float3::Right;
Matrix::LookAt(frustumCenter + light.Direction * minExtents.Z, frustumCenter, up, shadowView);
// Create viewport for culling with extended near/far planes due to culling issues (aka pancaking)
const float cullRangeExtent = 100000.0f;