From cde32060ec6cb4e2e98445aafa7f2f33310d7faf Mon Sep 17 00:00:00 2001
From: "SND\\AstrorEnales_cp"
 <SND\AstrorEnales_cp@7a4bfd9b-e295-4cbd-a51f-ab472bcf69b7>
Date: Sun, 19 Aug 2012 15:22:21 +0000
Subject: [PATCH] Forgot the buffer write for unset parameters

---
 .../Shader/ParameterBuffer.cs                 | 45 ++++++++++++++++---
 1 file changed, 39 insertions(+), 6 deletions(-)

diff --git a/RenderSystems/ANX.RenderSystem.Windows.Metro/Shader/ParameterBuffer.cs b/RenderSystems/ANX.RenderSystem.Windows.Metro/Shader/ParameterBuffer.cs
index 41490a98..5a1d7ae9 100644
--- a/RenderSystems/ANX.RenderSystem.Windows.Metro/Shader/ParameterBuffer.cs
+++ b/RenderSystems/ANX.RenderSystem.Windows.Metro/Shader/ParameterBuffer.cs
@@ -181,12 +181,28 @@ namespace ANX.RenderSystem.Windows.Metro.Shader
 			MemoryStream stream = new MemoryStream();
 			BinaryWriter writer = new BinaryWriter(stream);
 
-			foreach (byte[] data in setData)
-			{
-				if (data != null)
-				{
-					writer.Write(data);
-				}
+            for(int index = 0; index < setData.Length; index++)
+            {
+                byte[] data = (byte[])setData[index];
+                if (data != null)
+                {
+                    writer.Write(data);
+                }
+                else
+                {
+                    var parameter = parentEffect.shader.Parameters[index];
+                    if (parameter.Type.ToLower().Contains("texture"))
+                        continue;
+
+                    int size = GetParameterTypeSize(parameter.Type);
+                    foreach (int dimension in parameter.TypeDimensions)
+                    {
+                        size *= dimension;
+                    }
+
+                    size *= parameter.ArraySize;
+                    writer.Write(new byte[size]);
+                }
 			}
 
 			byte[] streamBytes = stream.ToArray();
@@ -208,6 +224,23 @@ namespace ANX.RenderSystem.Windows.Metro.Shader
 		}
 		#endregion
 
+        private int GetParameterTypeSize(string type)
+        {
+            if (type == "float" ||
+                type == "int" ||
+                type == "uint" ||
+                type == "dword")
+                return 4;
+            if (type == "double")
+                return 8;
+            if (type == "bool")
+                return 1;
+            if (type == "half")
+                return 2;
+
+            throw new NotImplementedException("Parameter type " + type + " has no size value!");
+        }
+
 		#region Dispose
 		public void Dispose()
 		{