/// <summary>
///
/// </summary>
public override void Render(RenderContext renderContext)
{
/// --- do not render, if not enabled
if (!this.IsRendering)
{
return;
}
if (this.Geometry == null)
{
return;
}
if (this.Visibility != System.Windows.Visibility.Visible)
{
return;
}
if (renderHost.RenderTechnique == renderHost.RenderTechniquesManager.RenderTechniques.Get(DeferredRenderTechniqueNames.Deferred) ||
renderHost.RenderTechnique == renderHost.RenderTechniquesManager.RenderTechniques.Get(DeferredRenderTechniqueNames.GBuffer))
{
return;
}
if (renderContext.IsShadowPass)
{
if (!this.IsThrowingShadow)
{
return;
}
}
/// --- since these values are changed only per window resize, we set them only once here
//if (this.isResized || renderContext.Camera != this.lastCamera)
{
//this.isResized = false;
//this.lastCamera = renderContext.Camera;
if (renderContext.Camera is ProjectionCamera)
{
var c = renderContext.Camera as ProjectionCamera;
// viewport: W,H,0,0
var viewport = new Vector4((float)renderContext.Canvas.ActualWidth, (float)renderContext.Canvas.ActualHeight, 0, 0);
var ar = viewport.X / viewport.Y;
this.vViewport.Set(ref viewport);
// Actually, we don't really need vFrustum because we already know the depth of the projected line.
//var fov = 100.0; // this is a fake value, since the line shader does not use it!
//var zn = c.NearPlaneDistance > 0 ? c.NearPlaneDistance : 0.1;
//var zf = c.FarPlaneDistance + 0.0;
// frustum: FOV,AR,N,F
//var frustum = new Vector4((float)fov, (float)ar, (float)zn, (float)zf);
//this.vFrustum.Set(ref frustum);
}
}
/// --- set transform paramerers
var worldMatrix = this.modelMatrix * renderContext.worldMatrix;
this.effectTransforms.mWorld.SetMatrix(ref worldMatrix);
/// --- set effect per object const vars
var lineParams = new Vector4((float)this.Thickness, (float)this.Smoothness, 0, 0);
this.vLineParams.Set(lineParams);
/// --- set context
this.Device.ImmediateContext.InputAssembler.InputLayout = this.vertexLayout;
this.Device.ImmediateContext.InputAssembler.SetIndexBuffer(this.indexBuffer, Format.R32_UInt, 0);
this.Device.ImmediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.LineList;
/// --- check instancing
this.hasInstances = (this.Instances != null) && (this.Instances.Any());
this.bHasInstances.Set(this.hasInstances);
/// --- set rasterstate
this.Device.ImmediateContext.Rasterizer.State = this.rasterState;
if (this.hasInstances)
{
/// --- update instance buffer
if (this.isChanged)
{
this.instanceBuffer = Buffer.Create(this.Device, this.instanceArray, new BufferDescription(Matrix.SizeInBytes * this.instanceArray.Length, ResourceUsage.Dynamic, BindFlags.VertexBuffer, CpuAccessFlags.Write, ResourceOptionFlags.None, 0));
DataStream stream;
Device.ImmediateContext.MapSubresource(this.instanceBuffer, MapMode.WriteDiscard, global::SharpDX.Direct3D11.MapFlags.None, out stream);
stream.Position = 0;
stream.WriteRange(this.instanceArray, 0, this.instanceArray.Length);
Device.ImmediateContext.UnmapSubresource(this.instanceBuffer, 0);
stream.Dispose();
this.isChanged = false;
}
/// --- INSTANCING: need to set 2 buffers
this.Device.ImmediateContext.InputAssembler.SetVertexBuffers(0, new[]
{
new VertexBufferBinding(this.vertexBuffer, VertexSizeInBytes, 0),
new VertexBufferBinding(this.instanceBuffer, Matrix.SizeInBytes, 0),
});
/// --- render the geometry
for (int i = 0; i < this.effectTechnique.Description.PassCount; i++)
{
this.effectTechnique.GetPassByIndex(i).Apply(Device.ImmediateContext);
this.Device.ImmediateContext.DrawIndexedInstanced(this.Geometry.Indices.Count, this.instanceArray.Length, 0, 0, 0);
}
}
else
{
/// --- bind buffer
this.Device.ImmediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(this.vertexBuffer, VertexSizeInBytes, 0));
/// --- render the geometry
this.effectTechnique.GetPassByIndex(0).Apply(this.Device.ImmediateContext);
this.Device.ImmediateContext.DrawIndexed(this.Geometry.Indices.Count, 0, 0);
}
}
/// <summary>
///
/// </summary>
/// <param name="host"></param>
public override void Attach(IRenderHost host)
{
/// --- attach
renderTechnique = host.RenderTechniquesManager.RenderTechniques[DefaultRenderTechniqueNames.Lines];
base.Attach(host);
if (Geometry == null)
{
return;
}
if (renderHost.RenderTechnique == renderHost.RenderTechniquesManager.RenderTechniques.Get(DeferredRenderTechniqueNames.Deferred) ||
renderHost.RenderTechnique == renderHost.RenderTechniquesManager.RenderTechniques.Get(DeferredRenderTechniqueNames.GBuffer))
{
return;
}
// --- get device
vertexLayout = renderHost.EffectsManager.GetLayout(renderTechnique);
effectTechnique = effect.GetTechniqueByName(renderTechnique.Name);
effectTransforms = new EffectTransformVariables(effect);
// --- get geometry
var geometry = Geometry as LineGeometry3D;
// -- set geometry if given
if (geometry != null)
{
/// --- set up buffers
vertexBuffer = Device.CreateBuffer(BindFlags.VertexBuffer, VertexSizeInBytes, CreateLinesVertexArray());
/// --- set up indexbuffer
indexBuffer = Device.CreateBuffer(BindFlags.IndexBuffer, sizeof(int), geometry.Indices.Array);
}
/// --- init instances buffer
hasInstances = (Instances != null) && (Instances.Any());
bHasInstances = effect.GetVariableByName("bHasInstances").AsScalar();
if (hasInstances)
{
instanceBuffer = Buffer.Create(Device, instanceArray, new BufferDescription(Matrix.SizeInBytes * instanceArray.Length, ResourceUsage.Dynamic, BindFlags.VertexBuffer, CpuAccessFlags.Write, ResourceOptionFlags.None, 0));
}
/// --- set up const variables
vViewport = effect.GetVariableByName("vViewport").AsVector();
//this.vFrustum = effect.GetVariableByName("vFrustum").AsVector();
vLineParams = effect.GetVariableByName("vLineParams").AsVector();
/// --- set effect per object const vars
var lineParams = new Vector4((float)Thickness, (float)Smoothness, 0, 0);
vLineParams.Set(lineParams);
/// === debug hack
//{
// var texDiffuseMapView = ShaderResourceView.FromFile(device, @"G:\Projects\Deformation Project\FrameworkWPF2012\Externals\HelixToolkit-SharpDX\Source\Examples\SharpDX.Wpf\LightingDemo\TextureCheckerboard2.jpg");
// var texDiffuseMap = effect.GetVariableByName("texDiffuseMap").AsShaderResource();
// texDiffuseMap.SetResource(texDiffuseMapView);
//}
/// --- create raster state
OnRasterStateChanged(DepthBias);
//this.rasterState = new RasterizerState(this.device, rasterStateDesc);
/// --- set up depth stencil state
//var depthStencilDesc = new DepthStencilStateDescription()
//{
// DepthComparison = Comparison.Less,
// DepthWriteMask = global::SharpDX.Direct3D11.DepthWriteMask.All,
// IsDepthEnabled = true,
//};
//this.depthStencilState = new DepthStencilState(this.device, depthStencilDesc);
/// --- flush
Device.ImmediateContext.Flush();
}