Billboard foliage

Partition the instances by within/without the view frustum, then by
proximity to the view point and within/without the sunlight shadow
frustum. Use billboards for far away/out of view instances.

1 files changed, 7 insertions, 0 deletions

diff --git a/game/scenary/foliage.h b/game/scenary/foliage.h
index d15a8b0..61bdb5b 100644
--- a/game/scenary/foliage.h
+++ b/game/scenary/foliage.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "assetFactory/asset.h"
+#include "gfx/gl/billboardPainter.h"
 #include "gfx/gl/instanceVertices.h"
 #include "gfx/gl/shadowStenciller.h"
 #include "gfx/models/texture.h"
@@ -26,13 +27,19 @@ public:
 	};
 
 	mutable InstanceVertices<LocationVertex> instances;
+	void preFrame(const Frustum &, const Frustum &) override;
 	void render(const SceneShader &, const Frustum &) const override;
 	void shadows(const ShadowMapper &, const Frustum &) const override;
 	void updateStencil(const ShadowStenciller &) const override;
+	void updateBillboard(const BillboardPainter &) const override;
 	glTexture shadowStencil = ShadowStenciller::createStencilTexture(256, 256);
+	glTextures<3> billboard = BillboardPainter::createBillBoardTextures(256, 256);
 
 protected:
 	friend Persistence::SelectionPtrBase<std::shared_ptr<Foliage>>;
 	bool persist(Persistence::PersistenceStore & store) override;
 	void postLoad() override;
+
+private:
+	InstanceVertices<Foliage::LocationVertex>::PartitionResult instancePartitions;
 };