/// <summary>
/// Helper function sets up the graphics device and
/// effect ready for drawing instanced geometry.
/// </summary>
void SetRenderStates( InstancingTechnique instancingTechnique,
Matrix view, Matrix projection, Vector3 eye)
{
// Set the graphics device to use our vertex data.
graphicsDevice.VertexDeclaration = vertexDeclaration;
graphicsDevice.Vertices[0].SetSource( vertexBuffer, 0, vertexStride );
graphicsDevice.Indices = indexBuffer;
// Make sure our effect is set to use the right technique.
if ( techniqueChanged )
{
string techniqueName = instancingTechnique.ToString();
effect.CurrentTechnique = effect.Techniques[techniqueName];
techniqueChanged = false;
}
effectParameterView.SetValue( view );
effectParameterProjection.SetValue( projection );
effectParameterEye.SetValue( eye );
effectParameterVertexCount.SetValue( vertexCount );
}
void SetRenderStates(InstancingTechnique technique, Matrix view, Matrix projection)
{
device.VertexDeclaration = vertexDeclaration;
device.Vertices[0].SetSource(vertexBuffer, 0, vertexStride);
device.Indices = indexBuffer;
if (techniqueChanged)
{
string techniqueName = technique.ToString();
effect.CurrentTechnique = effect.Techniques[techniqueName];
techniqueChanged = false;
}
effect.Parameters["View"].SetValue(view);
effect.Parameters["Projection"].SetValue(projection);
}