public static void AddInstance(String modelName, Matrix matrix)
{
if (modelName == null) return;

if (instanceMatrices.ContainsKey(modelName))
{
List update;
instanceMatrices.TryGetValue(modelName, out update);
instanceMatrices.Remove(modelName);
instanceMatrices.Add(modelName, update);
}
else
{
var test = new List();
test.Add(matrix);
instanceMatrices.Add(modelName, test);
}
}

@RoeCode:
You were expecting us to use the ShaderManager for instancedshader.fx and didn’t warn us. That had me going for a while.

For upcoming tutorials, especially for terrain, look up Reimer’s 4th series. What I really want is a Quadtree implementation with nicer skies. I can raytrace landscapes and sky textures of nearly unlimited size and can map skies on a sphere using a Gimp filter.

I’ve already implemented his tutorial, but the performance from the result is abysmal (2-3 fps). Indeed I took it a step further and implemented slope maps using

float angle = Vector3.Dot(vertices[i].Normal, Vector3.Up);
vertices[i].Slope = MathHelper.Clamp((angle – 0.9f) * 5.0f, 0.0f, 1.0f);

while generating the terrain data. Now that I have practice using the ShaderGenerator I want to throw a serious shader at it. I will look around online and see what I find.

where is the link to download the source code of the engine? I can not found it. Thanks

I’m also very interrested in more details on texturing things like terrain. I’ve been using programs like terragen and such to generate heightmaps and colormaps and such for use with the YATT plugin for nwn2 editor.

Thanks for the great info so far.

Brilliant tutorial, really interesting and very helpful, is there any chance you could do a mini tutorial on how to use the engine to its fully capacity for rendering, texturising, heightmaps and bump mapping for example. Just the basics for getting a nicely drawn world example.

Thanks for all your hard work and for sharing it