trying to tighten frustum but the sampling is broken

Effects/DeferredPBREffect.cs

@@ -10,15 +10,25 @@ namespace Kav
         EffectParameter gNormalParam;
         EffectParameter gMetallicRoughnessParam;
         
+        EffectParameter directionalShadowMapParam;
+        EffectParameter directionalLightDirectionParam;
+        EffectParameter directionalLightColorParam;
+        EffectParameter directionalLightMatrixParam;
+
         EffectParameter eyePositionParam;
+
         PointLightCollection pointLightCollection;
-        DirectionalLightCollection directionalLightCollection;
 
         public Texture2D GPosition { get; set; }
         public Texture2D GAlbedo { get; set; }
         public Texture2D GNormal { get; set; }
         public Texture2D GMetallicRoughness { get; set; }
 
+        public Texture2D DirectionalShadowMap { get; set; }
+        public Vector3 DirectionalLightDirection { get; set; }
+        public Vector3 DirectionalLightColor { get; set; }
+        public Matrix DirectionalLightMatrix { get; set; }
+
         public Vector3 EyePosition { get; set; }
 
         public int MaxPointLights { get; } = 64;
@@ -29,14 +39,6 @@ namespace Kav
             private set { pointLightCollection = value; }
         }
 
-        public int MaxDirectionalLights { get; } = 4;
-
-        public DirectionalLightCollection DirectionalLights
-        {
-            get { return directionalLightCollection; }
-            private set { directionalLightCollection = value; }
-        }
-
         public DeferredPBREffect(GraphicsDevice graphicsDevice) : base(graphicsDevice, Resources.DeferredPBREffect)
         {
             CacheEffectParameters();
@@ -46,11 +48,6 @@ namespace Kav
                 Parameters["PointLightColors"],
                 MaxPointLights
             );
-
-            DirectionalLights = new DirectionalLightCollection(
-                Parameters["DirectionalLightDirections"],
-                Parameters["DirectionalLightColors"]
-            );
         }
 
         protected DeferredPBREffect(DeferredPBREffect cloneSource) : base(cloneSource)
@@ -72,16 +69,6 @@ namespace Kav
             {
                 PointLights[i] = cloneSource.PointLights[i];
             }
-
-            DirectionalLights = new DirectionalLightCollection(
-                Parameters["DirectionalLightDirections"],
-                Parameters["DirectionalLightColors"]
-            );
-
-            for (int i = 0; i < MaxDirectionalLights; i++)
-            {
-                DirectionalLights[i] = cloneSource.DirectionalLights[i];
-            }
         }
 
         public override Effect Clone()
@@ -96,6 +83,11 @@ namespace Kav
             gNormalParam.SetValue(GNormal);
             gMetallicRoughnessParam.SetValue(GMetallicRoughness);
 
+            directionalShadowMapParam.SetValue(DirectionalShadowMap);
+            directionalLightDirectionParam.SetValue(DirectionalLightDirection);
+            directionalLightColorParam.SetValue(DirectionalLightColor);
+            directionalLightMatrixParam.SetValue(DirectionalLightMatrix);
+
             eyePositionParam.SetValue(EyePosition);
         }
 
@@ -105,6 +97,11 @@ namespace Kav
             gAlbedoParam = Parameters["gAlbedo"];
             gNormalParam = Parameters["gNormal"];
             gMetallicRoughnessParam = Parameters["gMetallicRoughness"];
+            directionalShadowMapParam = Parameters["directionalShadowMap"];
+            
+            directionalLightDirectionParam = Parameters["DirectionalLightDirection"];
+            directionalLightColorParam = Parameters["DirectionalLightColor"];
+            directionalLightMatrixParam = Parameters["DirectionalLightMatrix"];
 
             eyePositionParam = Parameters["EyePosition"];
         }

Effects/DirectionalLightCollection.cs

@@ -5,17 +5,41 @@ namespace Kav
 {
     public class DirectionalLightCollection
     {
-        private readonly Vector3[] directions = new Vector3[4];
-        private readonly Vector3[] colors = new Vector3[4];
-        private readonly float[] intensities = new float[4];
+        private readonly Vector3[] directions = new Vector3[6];
+        private readonly Vector3[] colors = new Vector3[6];
+        private readonly float[] intensities = new float[6];
+        private readonly Matrix[] viewMatrices = new Matrix[6];
+        private readonly Matrix[] projectionMatrices = new Matrix[6];
+        private readonly Matrix[] viewProjectionMatrices = new Matrix[6];
 
         readonly EffectParameter lightDirectionsParam;
         readonly EffectParameter lightColorsParam;
+        readonly EffectParameter lightSpaceMatricesParam;
 
-        public DirectionalLightCollection(EffectParameter lightDirectionsParam, EffectParameter lightColorsParam)
-        {
+        public DirectionalLightCollection(
+            EffectParameter lightDirectionsParam,
+            EffectParameter lightColorsParam,
+            EffectParameter lightSpaceMatricesParam
+        ) {
             this.lightDirectionsParam = lightDirectionsParam;
             this.lightColorsParam = lightColorsParam;
+            this.lightSpaceMatricesParam = lightSpaceMatricesParam;
+        }
+
+        public void SetMatrices(int index, Matrix view, Matrix projection)
+        {
+            viewMatrices[index] = view;
+            projectionMatrices[index] = projection;
+        }
+
+        public void Apply()
+        {
+            for (int i = 0; i < 6; i++)
+            {
+                viewProjectionMatrices[i] = viewMatrices[i] * projectionMatrices[i];
+            }
+
+            lightSpaceMatricesParam.SetValue(viewProjectionMatrices);
         }
 
         public DirectionalLight this[int i]

Effects/HLSL/DeferredPBREffect.fx

@@ -2,12 +2,12 @@
 
 static const float PI = 3.141592653589793;
 static const int MAX_POINT_LIGHTS = 64;
-static const int MAX_DIRECTIONAL_LIGHTS = 4;
 
 DECLARE_TEXTURE(gPosition, 0);
 DECLARE_TEXTURE(gAlbedo, 1);
 DECLARE_TEXTURE(gNormal, 2);
 DECLARE_TEXTURE(gMetallicRoughness, 3);
+DECLARE_TEXTURE(directionalShadowMap, 4);
 
 BEGIN_CONSTANTS
 
@@ -16,19 +16,37 @@ BEGIN_CONSTANTS
     float3 PointLightPositions[MAX_POINT_LIGHTS]               _ps(c1)      _cb(c1);
     float3 PointLightColors[MAX_POINT_LIGHTS]                  _ps(c65)     _cb(c65);
 
-    float3 DirectionalLightDirections[MAX_DIRECTIONAL_LIGHTS]  _ps(c129)   _cb(c129);
-    float3 DirectionalLightColors[MAX_DIRECTIONAL_LIGHTS]      _ps(c133)   _cb(c133);
+    float3 DirectionalLightDirection                           _ps(c129)   _cb(c129);
+    float3 DirectionalLightColor                               _ps(c130)   _cb(c130);
 
 MATRIX_CONSTANTS
 
+    float4x4 DirectionalLightMatrix                            _ps(c131)   _cb(c131);
+
 END_CONSTANTS
 
+struct VertexInput
+{
+    float4 Position : POSITION;
+    float2 TexCoord : TEXCOORD;
+};
+
 struct PixelInput
 {
     float4 Position : SV_POSITION;
     float2 TexCoord : TEXCOORD0;
 };
 
+PixelInput main_vs(VertexInput input)
+{
+    PixelInput output;
+
+    output.Position = input.Position;
+    output.TexCoord = input.TexCoord;
+
+    return output;
+}
+
 // Pixel Shader
 
 float3 FresnelSchlick(float cosTheta, float3 F0)
@@ -71,6 +89,26 @@ float GeometrySmith(float3 N, float3 V, float3 L, float roughness)
     return ggx1 * ggx2;
 }
 
+float ComputeShadow(float4 positionLightSpace)
+{
+    float bias = 0.001;
+
+    // maps to [-1, 1]
+    float3 projectionCoords = positionLightSpace.xyz / positionLightSpace.w;
+
+    //transform to [0, 1] range
+    projectionCoords = projectionCoords * 0.5 + 0.5;
+    
+    float closestDepth = SAMPLE_TEXTURE(directionalShadowMap, positionLightSpace.xy).r;
+    float currentDepth = projectionCoords.z;
+
+    if (projectionCoords.z > 1.0) { return 0.0; }
+
+    float shadow = currentDepth - bias > closestDepth ? 1.0 : 0.0;
+
+    return shadow;
+}
+
 float3 ComputeLight(
     float3 lightDir,
     float3 radiance,
@@ -79,7 +117,8 @@ float3 ComputeLight(
     float3 N,
     float3 albedo,
     float metallic,
-    float roughness
+    float roughness,
+    float shadow
 ) {
     float3 L = normalize(lightDir);
     float3 H = normalize(V + L);
@@ -98,7 +137,7 @@ float3 ComputeLight(
     kD *= 1.0 - metallic;
 
     float NdotL = max(dot(N, L), 0.0);
-    return (kD * albedo / PI + specular) * radiance * NdotL;
+    return (kD * albedo / PI + specular) * radiance * NdotL * shadow;
 }
 
 float4 ComputeColor(
@@ -116,7 +155,7 @@ float4 ComputeColor(
 
     float3 Lo = float3(0.0, 0.0, 0.0);
 
-    // point light
+    // point lights
     for (int i = 0; i < MAX_POINT_LIGHTS; i++)
     {
         float3 lightDir = PointLightPositions[i] - worldPosition;
@@ -124,17 +163,17 @@ float4 ComputeColor(
         float attenuation = 1.0 / (distance * distance);
         float3 radiance = PointLightColors[i] * attenuation;
 
-        Lo += ComputeLight(lightDir, radiance, F0, V, N, albedo, metallic, roughness);
+        Lo += ComputeLight(lightDir, radiance, F0, V, N, albedo, metallic, roughness, 1.0);
     }
 
     // directional light
-    for (int i = 0; i < MAX_DIRECTIONAL_LIGHTS; i++)
-    {
-        float3 lightDir = DirectionalLightDirections[i];
-        float3 radiance = DirectionalLightColors[i];
+    float4 positionLightSpace = mul(float4(worldPosition, 1.0), DirectionalLightMatrix);
+    float shadow = ComputeShadow(positionLightSpace);
 
-        Lo += ComputeLight(lightDir, radiance, F0, V, N, albedo, metallic, roughness);
-    }
+    float3 lightDir = DirectionalLightDirection;
+    float3 radiance = DirectionalLightColor;
+
+    Lo += ComputeLight(lightDir, radiance, F0, V, N, albedo, metallic, roughness, (1.0 - shadow));
 
     float3 ambient = float3(0.03, 0.03, 0.03) * albedo; // * AO;
     float3 color = ambient + Lo;
@@ -148,13 +187,13 @@ float4 ComputeColor(
 
 float4 main_ps(PixelInput input) : SV_TARGET0
 {
-    float3 fragPosition = SAMPLE_TEXTURE(gPosition, input.TexCoord).rgb;
+    float3 worldPosition = SAMPLE_TEXTURE(gPosition, input.TexCoord).rgb;
     float3 normal = SAMPLE_TEXTURE(gNormal, input.TexCoord).xyz;
     float3 albedo = SAMPLE_TEXTURE(gAlbedo, input.TexCoord).rgb;
     float2 metallicRoughness = SAMPLE_TEXTURE(gMetallicRoughness, input.TexCoord).rg;
 
     return ComputeColor(
-        fragPosition,
+        worldPosition,
         normal,
         albedo,
         metallicRoughness.r,
@@ -166,6 +205,7 @@ Technique DeferredPBR
 {
     Pass
     {
+        VertexShader = compile vs_3_0 main_vs();
         PixelShader = compile ps_3_0 main_ps();
     }
 }

Effects/HLSL/Macros.fxh

@@ -52,6 +52,8 @@
     sampler Name##Sampler : register(s##index) = sampler_state { Texture = (Name); };
 
 #define SAMPLE_TEXTURE(Name, texCoord)  tex2D(Name##Sampler, texCoord)
+#define SAMPLE_TEXTURE_LOD(Name, texCoord) tex2Dlod(Name##Sampler, texCoord)
+#define SAMPLE_VERTEX_TEXTURE(Name, texCoord) tex2Dlod(Name##Sampler, float4(texCoord, 0, 0))
 #define SAMPLE_CUBEMAP(Name, texCoord)  texCUBE(Name##Sampler, texCoord)
 #define SAMPLE_CUBEMAP_LOD(Name, texCoord)  texCUBElod(Name##Sampler, texCoord)
 #endif

Effects/HLSL/SimpleDepthEffect.fx

@@ -16,21 +16,29 @@ struct VertexShaderInput
 struct VertexShaderOutput
 {
     float4 Position : SV_Position;
+    float Depth : TEXCOORD0;
 };
 
 VertexShaderOutput main_vs(VertexShaderInput input)
 {
     VertexShaderOutput output;
 
-    output.Position = mul(float4(input.Position.xyz, 1.0), ModelViewProjection);
+    output.Position = mul(input.Position, ModelViewProjection);
+    output.Depth = output.Position.z / output.Position.w;
 
     return output;
 }
 
+float4 main_ps(VertexShaderOutput input) : SV_TARGET0
+{
+    return float4(input.Depth, 0.0, 0.0, 0.0);
+}
+
 Technique SimpleDepth
 {
     Pass
     {
         VertexShader = compile vs_3_0 main_vs();
+        PixelShader  = compile ps_3_0 main_ps();
     }
 }

Effects/PBREffect.cs

@@ -207,7 +207,8 @@ namespace Kav
 
             directionalLightCollection = new DirectionalLightCollection(
                 Parameters["LightDirections"],
-                Parameters["DirectionLightColors"]
+                Parameters["DirectionLightColors"],
+                Parameters["DirectionalLightMatrices"]
             );
         }
 
@@ -232,7 +233,8 @@ namespace Kav
 
             DirectionalLights = new DirectionalLightCollection(
                 Parameters["LightDirections"],
-                Parameters["DirectionLightColors"]
+                Parameters["DirectionLightColors"],
+                Parameters["DirectionalLightMatrices"]
             );
 
             for (int i = 0; i < MaxDirectionalLights; i++)

Effects/SimpleDepthEffect.cs

@@ -42,6 +42,7 @@ namespace Kav
                 dirtyFlags |= EffectDirtyFlags.WorldViewProj;
             }
         }
+
         public SimpleDepthEffect(GraphicsDevice graphicsDevice) : base(graphicsDevice, Resources.SimpleDepthEffect)
         {
             CacheEffectParameters();
@@ -58,6 +59,7 @@ namespace Kav
 
                 dirtyFlags &= ~EffectDirtyFlags.WorldViewProj;
             }
+
         }
 
         private void CacheEffectParameters()

Extensions/Vector3Extensions.cs

@@ -0,0 +1,16 @@
+using Microsoft.Xna.Framework;
+
+namespace Kav.Extensions
+{
+    public static class Vector3Extensions
+    {
+        public static Vector3 Floor(this Vector3 input)
+        {
+            var x = (float)System.Math.Floor(input.X);
+            var y = (float)System.Math.Floor(input.Y);
+            var z = (float)System.Math.Floor(input.Z);
+
+            return new Vector3(x, y, z);
+        }
+    }
+}

Kav.Core.csproj

@@ -7,11 +7,13 @@
     <Copyright>Evan Hemsley 2020</Copyright>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <AssemblyName>Kav</AssemblyName>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>
     <ProjectReference Include="../FNA/FNA.Core.csproj" />
     <ProjectReference Include="../Smuggler/Smuggler.Core.csproj" />
+    <ProjectReference Include="../MoonTools.Bonk/Bonk/Bonk.csproj" />
   </ItemGroup>
 
   <ItemGroup>

Kav.Framework.csproj

@@ -7,11 +7,13 @@
     <Copyright>Evan Hemsley 2020</Copyright>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <AssemblyName>Kav</AssemblyName>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>
     <ProjectReference Include="../FNA/FNA.csproj" />
     <ProjectReference Include="../Smuggler/Smuggler.Framework.csproj" />
+    <ProjectReference Include="../MoonTools.Bonk/Bonk/Bonk.csproj" />
   </ItemGroup>
 
   <ItemGroup>

Lights/DirectionalLight.cs

@@ -4,25 +4,9 @@ namespace Kav
 {
     public struct DirectionalLight
     {
-        public Vector3 Direction { get; set; }
-        public Color Color { get; set; }
-        public float Intensity { get; set; }
-
-        public Matrix View
-        {
-            get
-            {
-                return Matrix.CreateLookAt(-Direction * 100f, Vector3.Zero, Vector3.Up);
-            }
-        }
-
-        public Matrix Projection
-        {
-            get
-            {
-                return Matrix.CreateOrthographic(20f, 20f, 1f, 101f);
-            }
-        }
+        public Vector3 Direction { get; }
+        public Color Color { get; }
+        public float Intensity { get; }
 
         public DirectionalLight(Vector3 direction, Color color, float intensity = 1f)
         {

Renderer.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Kav.Extensions;
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 
@@ -10,7 +11,7 @@ namespace Kav
         private int RenderDimensionsX { get; }
         private int RenderDimensionsY { get; }
 
-        private RenderTarget2D DepthRenderTarget { get; }
+        private RenderTarget2D DirectionalLightDepthTarget { get; }
         private SimpleDepthEffect SimpleDepthEffect { get; }
 
         private RenderTarget2D gPosition { get; }
@@ -19,6 +20,8 @@ namespace Kav
         private RenderTarget2D gMetallicRoughness { get; }
         private RenderTarget2D deferredRenderTarget { get; }
 
+        private VertexBuffer fullscreenTriangle { get; }
+
         private RenderTargetBinding[] GBuffer { get; }
 
         private DeferredPBREffect DeferredPBREffect { get; }
@@ -31,12 +34,12 @@ namespace Kav
             RenderDimensionsX = renderDimensionsX;
             RenderDimensionsY = renderDimensionsY;
 
-            DepthRenderTarget = new RenderTarget2D(
+            DirectionalLightDepthTarget = new RenderTarget2D(
                 GraphicsDevice,
-                renderDimensionsX,
-                renderDimensionsY,
+                1024,
+                1024,
                 false,
-                SurfaceFormat.HalfSingle, // unused
+                SurfaceFormat.Single,
                 DepthFormat.Depth24
             );
 
@@ -92,10 +95,21 @@ namespace Kav
             SimpleDepthEffect = new SimpleDepthEffect(GraphicsDevice);
             DeferredPBREffect = new DeferredPBREffect(GraphicsDevice);
 
+            fullscreenTriangle = new VertexBuffer(GraphicsDevice, typeof(VertexPositionTexture), 3, BufferUsage.WriteOnly);
+            fullscreenTriangle.SetData(new VertexPositionTexture[3] {
+                new VertexPositionTexture(new Vector3(-1, -1, 0), new Vector2(0, 0)),
+                new VertexPositionTexture(new Vector3(-1, 3, 0), new Vector2(0, -2)),
+                new VertexPositionTexture(new Vector3(3, -1, 0), new Vector2(2, 0))
+            });
+
             SpriteBatch = new SpriteBatch(GraphicsDevice);
 
             GraphicsDevice.SetRenderTarget(deferredRenderTarget);
             graphicsDevice.Clear(Color.White);
+
+            GraphicsDevice.SetRenderTarget(DirectionalLightDepthTarget);
+            GraphicsDevice.Clear(Color.White);
+
             GraphicsDevice.SetRenderTarget(null);
         }
 
@@ -103,8 +117,16 @@ namespace Kav
             Camera camera,
             IEnumerable<(Model, Matrix)> modelTransforms,
             IEnumerable<PointLight> pointLights,
-            IEnumerable<DirectionalLight> directionalLights
+            DirectionalLight directionalLight
         ) {
+            var cameraViewProjectionMatrix = camera.View * camera.Projection;
+
+            ShadowMapRender(
+                modelTransforms,
+                directionalLight,
+                cameraViewProjectionMatrix
+            );
+
             GraphicsDevice.SetRenderTargets(GBuffer);
             GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.Black, 1f, 0);
             GraphicsDevice.DepthStencilState = DepthStencilState.Default;
@@ -160,36 +182,53 @@ namespace Kav
                 i++;
             }
 
-            i = 0;
-            foreach (var directionalLight in directionalLights)
+            DeferredPBREffect.DirectionalShadowMap = DirectionalLightDepthTarget;
+            DeferredPBREffect.DirectionalLightDirection = directionalLight.Direction;
+            DeferredPBREffect.DirectionalLightColor = directionalLight.Color.ToVector3() * directionalLight.Intensity;
+
+            foreach (EffectPass pass in DeferredPBREffect.CurrentTechnique.Passes)
             {
-                if (i > DeferredPBREffect.MaxDirectionalLights) { break; }
-                DeferredPBREffect.DirectionalLights[i] = directionalLight;
-                i++;
+                pass.Apply();
+                GraphicsDevice.SetVertexBuffer(fullscreenTriangle);
+                GraphicsDevice.DrawPrimitives(PrimitiveType.TriangleList, 0, 1);
             }
-
-            SpriteBatch.Begin(SpriteSortMode.Deferred, BlendState.NonPremultiplied, null, null, null, DeferredPBREffect);
-            SpriteBatch.Draw(deferredRenderTarget, Vector2.Zero, Color.White);
-            SpriteBatch.End();
-        }
-
-        public void Render(
-            Camera camera, 
-            IEnumerable<(Model, Matrix)> modelTransforms, 
-            IEnumerable<PointLight> pointLights,
-            IEnumerable<DirectionalLight> directionalLights
-        ) {
-            Render(camera.View, camera.Projection, modelTransforms, pointLights, directionalLights);
         }
 
         // for shadow mapping
-        public void DepthRender(IEnumerable<(Model, Matrix)> modelTransforms, DirectionalLight directionalLight)
-        {
-            GraphicsDevice.SetRenderTarget(DepthRenderTarget);
-            GraphicsDevice.Clear(ClearOptions.DepthBuffer, Color.Black, 1, 0);
+        public void ShadowMapRender(
+            IEnumerable<(Model, Matrix)> modelTransforms,
+            DirectionalLight directionalLight,
+            Matrix cameraViewProjectionMatrix
+        ) {
+            GraphicsDevice.SetRenderTarget(DirectionalLightDepthTarget);
+            GraphicsDevice.Clear(Color.White);
+            GraphicsDevice.DepthStencilState = DepthStencilState.Default;
+            GraphicsDevice.BlendState = BlendState.Opaque;
             
-            SimpleDepthEffect.View = directionalLight.View;
-            SimpleDepthEffect.Projection = directionalLight.Projection;
+            var right = Vector3.Cross(Vector3.Up, directionalLight.Direction);
+            var up = Vector3.Cross(directionalLight.Direction, right);
+
+            var lightRotation = Matrix.CreateLookAt(Vector3.Zero, -directionalLight.Direction, up);
+
+            var cameraBoundingFrustum = new BoundingFrustum(cameraViewProjectionMatrix);
+
+            Vector3[] frustumCorners = cameraBoundingFrustum.GetCorners();
+            for (var i = 0; i < frustumCorners.Length; i++)
+            {
+                frustumCorners[i] = Vector3.Transform(frustumCorners[i], lightRotation);
+            }
+
+            BoundingBox lightBox = BoundingBox.CreateFromPoints(frustumCorners);
+            Vector3 boxSize = lightBox.Max - lightBox.Min;
+            Vector3 halfBoxSize = boxSize * 0.5f;
+
+            Vector3 lightPosition = lightBox.Min + halfBoxSize;
+            lightPosition.Z = lightBox.Min.Z;
+            lightPosition = Vector3.Transform(lightPosition, Matrix.Invert(lightRotation));
+
+            SimpleDepthEffect.View = Matrix.CreateLookAt(lightPosition, lightPosition - directionalLight.Direction, up);
+            SimpleDepthEffect.Projection = Matrix.CreateOrthographic(boxSize.X, boxSize.Y, -boxSize.Z, boxSize.Z);
+            DeferredPBREffect.DirectionalLightMatrix = SimpleDepthEffect.View * SimpleDepthEffect.Projection;
 
             foreach (var (model, transform) in modelTransforms)
             {
@@ -220,6 +259,15 @@ namespace Kav
             }
         }
 
+        public void Render(
+            Camera camera, 
+            IEnumerable<(Model, Matrix)> modelTransforms, 
+            IEnumerable<PointLight> pointLights,
+            IEnumerable<DirectionalLight> directionalLights
+        ) {
+            Render(camera.View, camera.Projection, modelTransforms, pointLights, directionalLights);
+        }
+
         private void Render(
             Matrix view,
             Matrix projection,