/// <summary>
/// Initializes the specified device.
/// </summary>
/// <param name="graphicsProfiles">The graphics profiles.</param>
/// <param name="deviceCreationFlags">The device creation flags.</param>
/// <param name="windowHandle">The window handle.</param>
private void InitializePlatformDevice(GraphicsProfile[] graphicsProfiles, DeviceCreationFlags deviceCreationFlags, object windowHandle)
{
if (nativeDevice != null)
{
// Destroy previous device
ReleaseDevice();
}
// Profiling is supported through pix markers
IsProfilingSupported = true;
// Map GraphicsProfile to D3D11 FeatureLevel
SharpDX.Direct3D.FeatureLevel[] levels = graphicsProfiles.ToFeatureLevel();
creationFlags = (SharpDX.Direct3D11.DeviceCreationFlags)deviceCreationFlags;
// Create Device D3D11 with feature Level based on profile
nativeDevice = new SharpDX.Direct3D11.Device(Adapter.NativeAdapter, creationFlags, levels);
nativeDeviceContext = nativeDevice.ImmediateContext;
if (IsDebugMode)
{
GraphicsResourceBase.SetDebugName(this, nativeDeviceContext, "ImmediateContext");
}
InitializeStages();
// Create the input layout manager
if (InputLayoutManager == null)
{
InputLayoutManager = new InputLayoutManager(this).DisposeBy(this);
}
}
/// <summary>
/// Prepares a draw call. This method is called before each Draw() method to setup the correct Primitive, InputLayout and VertexBuffers.
/// </summary>
/// <param name="primitiveType">Type of the primitive.</param>
/// <exception cref="System.InvalidOperationException">Cannot GraphicsDevice.Draw*() without an effect being previously applied with Effect.Apply() method</exception>
private void PrepareDraw(PrimitiveType primitiveType)
{
if (CurrentEffect == null)
{
throw new InvalidOperationException("Cannot GraphicsDevice.Draw*() without an effect being previously applied with Effect.Apply() method");
}
// Setup the primitive type
PrimitiveType = primitiveType;
// If the vertex array object is null, simply set the InputLayout to null
if (newVertexArrayObject == null)
{
if (currentVertexArrayObject != null)
{
currentVertexArrayObject = null;
currentVertexArrayLayout = null;
currentEffectInputSignature = null;
inputAssembler.InputLayout = currentInputLayout = null;
}
}
else
{
var newVertexArrayLayout = newVertexArrayObject.Layout;
var newEffectInputSignature = CurrentEffect.InputSignature;
var oldInputLayout = currentInputLayout;
// Apply the VertexArrayObject
if (newVertexArrayObject != currentVertexArrayObject)
{
currentVertexArrayObject = newVertexArrayObject;
newVertexArrayObject.Apply(inputAssembler);
}
// If the input layout of the effect or the vertex buffer has changed, get the associated new input layout
if (!ReferenceEquals(newVertexArrayLayout, currentVertexArrayLayout) || !ReferenceEquals(newEffectInputSignature, currentEffectInputSignature))
{
currentVertexArrayLayout = newVertexArrayLayout;
currentEffectInputSignature = newEffectInputSignature;
if (newVertexArrayObject.InputLayout != null && ReferenceEquals(newEffectInputSignature, newVertexArrayObject.EffectInputSignature))
{
// Default configuration
currentInputLayout = newVertexArrayObject.InputLayout;
}
else if (ReferenceEquals(newEffectInputSignature, newVertexArrayObject.LastEffectInputSignature))
{
// Reuse previous configuration
currentInputLayout = newVertexArrayObject.LastInputLayout;
}
// Slow path if the current VertexArrayObject is not optimized for the particular input (or not used right before)
else
{
currentInputLayout = InputLayoutManager.GetInputLayout(newEffectInputSignature, currentVertexArrayLayout);
// Store it in VAO since it will likely be used with same effect later
newVertexArrayObject.LastInputLayout = currentInputLayout;
newVertexArrayObject.LastEffectInputSignature = newEffectInputSignature;
}
// Setup the input layout (if it changed)
if (currentInputLayout != oldInputLayout)
{
inputAssembler.InputLayout = currentInputLayout;
}
}
}
}
internal void OnDestroyed()
{
// Clear input layouts cache
InputLayoutManager.OnDestroyed();
}