private void CreateDeviceObjects()
{
var commandList = Game.GraphicsContext.CommandList;
var shader = new EffectInstance(EffectSystem.LoadEffect("MultiMeshShader").WaitForResult());
shader.UpdateEffect(GraphicsDevice);
streamShader = shader;
var outputDesc = new RenderOutputDescription(GraphicsDevice.Presenter.BackBuffer.Format);
outputDesc.CaptureState(commandList);
var pipeline = new PipelineStateDescription()
{
/* TODO: do we need all these? */
BlendState = BlendStates.Default,
RasterizerState = RasterizerStateDescription.Default,
DepthStencilState = DepthStencilStates.None,
Output = outputDesc,
PrimitiveType = PrimitiveType.TriangleList,
InputElements = VertexType.Layout.CreateInputElements(),
EffectBytecode = shader.Effect.Bytecode,
RootSignature = shader.RootSignature,
};
var newPipelineState = PipelineState.New(GraphicsDevice, ref pipeline);
pipelineState = newPipelineState;
var streamBuffer = Xenko.Graphics.Buffer.New <VertexType>(
GraphicsDevice,
INITIAL_INSTANCE_COUNT,
BufferFlags.VertexBuffer | BufferFlags.StreamOutput
);
streamOutBufferBinding = new VertexBufferBinding(streamBuffer, VertexType.Layout, streamBuffer.ElementCount);
transformBuffer = Xenko.Graphics.Buffer.Structured.New <Matrix>(
GraphicsDevice,
INITIAL_INSTANCE_COUNT,
isUnorderedAccess: true
);
colorBuffer = Xenko.Graphics.Buffer.Structured.New <Color4>(
GraphicsDevice,
INITIAL_INSTANCE_COUNT,
isUnorderedAccess: true
);
}
/// <inheritdoc/>
protected override void DrawCore(RenderDrawContext context)
{
if (Game != null)
{
// Get or create VisibilityGroup for this RenderSystem + SceneInstance
var sceneInstance = SceneInstance.GetCurrent(context.RenderContext);
VisibilityGroup visibilityGroup = null;
if (sceneInstance != null)
{
// Find if VisibilityGroup
foreach (var currentVisibilityGroup in sceneInstance.VisibilityGroups)
{
if (currentVisibilityGroup.RenderSystem == RenderSystem)
{
visibilityGroup = currentVisibilityGroup;
break;
}
}
// If first time, let's create and register it
if (visibilityGroup == null)
{
sceneInstance.VisibilityGroups.Add(visibilityGroup = new VisibilityGroup(RenderSystem));
initializedSceneInstances.Add(sceneInstance);
}
// Reset & cleanup
visibilityGroup.Reset();
}
using (context.RenderContext.PushTagAndRestore(SceneInstance.CurrentVisibilityGroup, visibilityGroup))
using (context.RenderContext.PushTagAndRestore(SceneInstance.CurrentRenderSystem, RenderSystem))
using (context.RenderContext.PushTagAndRestore(SceneCameraSlotCollection.Current, Cameras))
{
// Set render system
context.RenderContext.RenderSystem = RenderSystem;
context.RenderContext.VisibilityGroup = visibilityGroup;
// Set start states for viewports and output (it will be used during the Collect phase)
var renderOutputs = new RenderOutputDescription();
renderOutputs.CaptureState(context.CommandList);
context.RenderContext.RenderOutput = renderOutputs;
var viewports = new ViewportState();
viewports.CaptureState(context.CommandList);
context.RenderContext.ViewportState = viewports;
try
{
// Collect in the game graphics compositor: Setup features/stages, enumerate views and populates VisibilityGroup
Game.Collect(context.RenderContext);
// Collect in render features
RenderSystem.Collect(context.RenderContext);
// Collect visibile objects from each view (that were not properly collected previously)
if (visibilityGroup != null)
{
foreach (var view in RenderSystem.Views)
{
visibilityGroup.TryCollect(view);
}
}
// Extract
RenderSystem.Extract(context.RenderContext);
// Prepare
RenderSystem.Prepare(context);
// Draw using the game graphics compositor
Game.Draw(context);
// Flush
RenderSystem.Flush(context);
}
finally
{
// Reset render context data
RenderSystem.Reset();
}
}
}
}