diff --git a/Renderer.cs b/Renderer.cs
index 2cc799f..5eabb74 100644
--- a/Renderer.cs
+++ b/Renderer.cs
@@ -31,7 +31,7 @@ namespace Kav
         private Kav.Model UnitCube { get; }
 
         private DynamicVertexBuffer PositionInstanceVertexBuffer { get; }
-        private readonly PositionInstanceVertex[] GBufferInstanceVertices = new PositionInstanceVertex[MAX_INSTANCE_VERTEX_COUNT];
+        private readonly PositionInstanceVertex[] PositionInstanceVertices = new PositionInstanceVertex[MAX_INSTANCE_VERTEX_COUNT];
 
         public Renderer(
             GraphicsDevice graphicsDevice
@@ -243,15 +243,13 @@ namespace Kav
 
         public static int FillAndSetBuffersForInstancing<T, V>(
             GraphicsDevice graphicsDevice,
-            PerspectiveCamera camera,
+            BoundingFrustum boundingFrustum,
             T drawable,
             IEnumerable<Matrix> transforms,
             V[] vertexData,
             DynamicVertexBuffer dynamicVertexBuffer
         ) where T : ICullable, IIndexDrawable where V : struct, IVertexType, IHasTranslation
         {
-            var boundingFrustum = new BoundingFrustum(camera.View * camera.Projection);
-
             int numInstances = 0;
             foreach (var transform in FrustumCull(boundingFrustum, drawable, transforms))
             {
@@ -387,10 +385,10 @@ namespace Kav
 
             var numInstances = FillAndSetBuffersForInstancing(
                 GraphicsDevice,
-                camera,
+                new BoundingFrustum(camera.View * camera.Projection),
                 drawable,
                 transforms,
-                GBufferInstanceVertices,
+                PositionInstanceVertices,
                 PositionInstanceVertexBuffer
             );
 
@@ -686,7 +684,7 @@ namespace Kav
             }
         }
 
-        public void RenderDirectionalShadowMapIndexed<T>(
+        private void RenderDirectionalShadowMapIndexed<T>(
             DirectionalShadowMapData shadowMapData,
             int shadowCascadeIndex,
             IEnumerable<(T, Matrix)> drawableTransforms
@@ -706,6 +704,55 @@ namespace Kav
             );
         }
 
+        public void RenderDirectionalShadowsInstanced<T>(
+            DirectionalShadowMapData shadowMapData,
+            T drawable,
+            IEnumerable<Matrix> transforms
+        ) where T : ICullable, IIndexDrawable
+        {
+            // render the individual shadow cascades
+            for (var i = 0; i < shadowMapData.NumShadowCascades; i++)
+            {
+                RenderDirectionalShadowMapInstanced(
+                    shadowMapData,
+                    i,
+                    drawable,
+                    transforms
+                );
+            }
+        }
+
+        private void RenderDirectionalShadowMapInstanced<T>(
+            DirectionalShadowMapData shadowMapData,
+            int shadowCascadeIndex,
+            T drawable,
+            IEnumerable<Matrix> transforms
+        ) where T : ICullable, IIndexDrawable
+        {
+            GraphicsDevice.SetRenderTarget(shadowMapData.ShadowMaps[shadowCascadeIndex]);
+            GraphicsDevice.DepthStencilState = DepthStencilState.Default;
+            GraphicsDevice.BlendState = BlendState.Opaque;
+
+            SimpleDepthEffectInstanced.View = shadowMapData.LightSpaceViews[shadowCascadeIndex];
+            SimpleDepthEffectInstanced.Projection = shadowMapData.LightSpaceProjections[shadowCascadeIndex];
+
+            var numInstances = FillAndSetBuffersForInstancing(
+                GraphicsDevice, 
+                new BoundingFrustum(SimpleDepthEffectInstanced.View * SimpleDepthEffectInstanced.Projection),
+                drawable,
+                transforms,
+                PositionInstanceVertices,
+                PositionInstanceVertexBuffer
+            );
+
+            RenderInstanced(
+                GraphicsDevice, 
+                drawable,
+                SimpleDepthEffectInstanced, 
+                numInstances
+            );
+        }
+
         public void RenderPointShadowMapIndexed<T>(
             RenderTargetCube pointShadowCubeMap,
             PerspectiveCamera camera,