From 194148abd9ab89a5a514a37b7717b7c4de6aa758 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 10 Mar 2025 02:12:16 +0000
Subject: Pass a Frustum to shadow renderers

The frustum might not be correct at this stage.
---
 gfx/gl/shadowMapper.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'gfx/gl/shadowMapper.cpp')

diff --git a/gfx/gl/shadowMapper.cpp b/gfx/gl/shadowMapper.cpp
index 231f203..dc461e0 100644
--- a/gfx/gl/shadowMapper.cpp
+++ b/gfx/gl/shadowMapper.cpp
@@ -118,7 +118,14 @@ ShadowMapper::update(const SceneProvider & scene, const LightDirection & dir, co
 				 &landmess, &dynamicPoint, &dynamicPointInst, &dynamicPointInstWithTextures, &stencilShadowProgram}) {
 		p->setView(out, sizes, lightViewPoint);
 	}
-	scene.shadows(*this);
+	ExtentsBoundingBox extents;
+	for (const auto & point : bandViewExtents.back()) {
+		extents += point;
+	}
+	const auto lightProjection
+			= glm::ortho(extents.min.x, extents.max.x, extents.min.y, extents.max.y, -extents.max.z, -extents.min.z);
+	Frustum frustum {lightViewPoint, lightViewDir, lightProjection};
+	scene.shadows(*this, frustum);
 
 	glCullFace(GL_BACK);
 
-- 
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