/// <summary>Allocates memory for a <see cref="Guid"/> value and initializes it.</summary>
/// <returns>A pointer to memory holding the <see cref="Guid"/> value for the current type.</returns>
private static Guid *CreateRIID()
{
var p = (Guid *)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(T), sizeof(Guid));
*p = typeof(T).GUID;
return(p);
}
/// <summary>
/// Builds the custom method table pointer for <see cref="ID3DIncludeForD2DHelpers"/>.
/// </summary>
/// <returns>The method table pointer for <see cref="ID3DIncludeForD2DHelpers"/>.</returns>
private static void **InitVtbl()
{
void **lpVtbl = (void **)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(ID3DIncludeForD2DHelpers), sizeof(void *) * 2);
#if NET6_0_OR_GREATER
lpVtbl[0] = (delegate * unmanaged <ID3DIncludeForD2DHelpers *, D3D_INCLUDE_TYPE, sbyte *, void *, void **, uint *, int>) & Open;
lpVtbl[1] = (delegate * unmanaged <ID3DIncludeForD2DHelpers *, void *, int>) & Close;
#else
lpVtbl[0] = (void *)Marshal.GetFunctionPointerForDelegate(OpenWrapper);
lpVtbl[1] = (void *)Marshal.GetFunctionPointerForDelegate(CloseWrapper);
#endif
return(lpVtbl);
}
/// <summary>
/// Initializes the shared state for <see cref="PixelShaderEffect"/>.
/// </summary>
static PixelShaderEffect()
{
void **lpVtbl = (void **)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(PixelShaderEffect), sizeof(void *) * 14);
// ID2D1EffectImpl
#if NET6_0_OR_GREATER
lpVtbl[0] = (delegate * unmanaged <PixelShaderEffect *, Guid *, void **, int>) & ID2D1EffectImplMethods.QueryInterface;
lpVtbl[1] = (delegate * unmanaged <PixelShaderEffect *, uint>) & ID2D1EffectImplMethods.AddRef;
lpVtbl[2] = (delegate * unmanaged <PixelShaderEffect *, uint>) & ID2D1EffectImplMethods.Release;
lpVtbl[3] = (delegate * unmanaged <PixelShaderEffect *, ID2D1EffectContext *, ID2D1TransformGraph *, int>) & ID2D1EffectImplMethods.Initialize;
lpVtbl[4] = (delegate * unmanaged <PixelShaderEffect *, D2D1_CHANGE_TYPE, int>) & ID2D1EffectImplMethods.PrepareForRender;
lpVtbl[5] = (delegate * unmanaged <PixelShaderEffect *, ID2D1TransformGraph *, int>) & ID2D1EffectImplMethods.SetGraph;
#else
lpVtbl[0] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.QueryInterfaceWrapper);
lpVtbl[1] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.AddRefWrapper);
lpVtbl[2] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.ReleaseWrapper);
lpVtbl[3] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.InitializeWrapper);
lpVtbl[4] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.PrepareForRenderWrapper);
lpVtbl[5] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1EffectImplMethods.SetGraphWrapper);
#endif
// ID2D1DrawTransform
#if NET6_0_OR_GREATER
lpVtbl[6 + 0] = (delegate * unmanaged <PixelShaderEffect *, Guid *, void **, int>) & ID2D1DrawTransformMethods.QueryInterface;
lpVtbl[6 + 1] = (delegate * unmanaged <PixelShaderEffect *, uint>) & ID2D1DrawTransformMethods.AddRef;
lpVtbl[6 + 2] = (delegate * unmanaged <PixelShaderEffect *, uint>) & ID2D1DrawTransformMethods.Release;
lpVtbl[6 + 3] = (delegate * unmanaged <PixelShaderEffect *, uint>) & ID2D1DrawTransformMethods.GetInputCount;
lpVtbl[6 + 4] = (delegate * unmanaged <PixelShaderEffect *, RECT *, RECT *, uint, int>) & ID2D1DrawTransformMethods.MapOutputRectToInputRects;
lpVtbl[6 + 5] = (delegate * unmanaged <PixelShaderEffect *, RECT *, RECT *, uint, RECT *, RECT *, int>) & ID2D1DrawTransformMethods.MapInputRectsToOutputRect;
lpVtbl[6 + 6] = (delegate * unmanaged <PixelShaderEffect *, uint, RECT, RECT *, int>) & ID2D1DrawTransformMethods.MapInvalidRect;
lpVtbl[6 + 7] = (delegate * unmanaged <PixelShaderEffect *, ID2D1DrawInfo *, int>) & ID2D1DrawTransformMethods.SetDrawInfo;
#else
lpVtbl[6 + 0] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.QueryInterfaceWrapper);
lpVtbl[6 + 1] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.AddRefWrapper);
lpVtbl[6 + 2] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.ReleaseWrapper);
lpVtbl[6 + 3] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.GetInputCountWrapper);
lpVtbl[6 + 4] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.MapOutputRectToInputRectsWrapper);
lpVtbl[6 + 5] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.MapInputRectsToOutputRectWrapper);
lpVtbl[6 + 6] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.MapInvalidRectWrapper);
lpVtbl[6 + 7] = (void *)Marshal.GetFunctionPointerForDelegate(ID2D1DrawTransformMethods.SetDrawInfoWrapper);
#endif
VtblForID2D1EffectImpl = lpVtbl;
VtblForID2D1DrawTransform = &lpVtbl[6];
}
/// <summary>
/// Builds the custom method table pointer for <see cref="IDXGIFactory4As6Backcompat"/>.
/// </summary>
/// <returns>The method table pointer for <see cref="IDXGIFactory4As6Backcompat"/>.</returns>
private static void **InitVtbl()
{
void **lpVtbl = (void **)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(IDXGIFactory4As6Backcompat), sizeof(void *) * 30);
new Span <IntPtr>(lpVtbl, 30).Clear();
#if NET6_0_OR_GREATER
lpVtbl[2] = (delegate * unmanaged <IDXGIFactory4As6Backcompat *, uint>) & Release;
lpVtbl[27] = (delegate * unmanaged <IDXGIFactory4As6Backcompat *, Guid *, void **, int>) & EnumWarpAdapter;
lpVtbl[29] = (delegate * unmanaged <IDXGIFactory4As6Backcompat *, uint, DXGI_GPU_PREFERENCE, Guid *, void **, int>) & EnumAdapterByGpuPreference;
#else
lpVtbl[2] = (void *)Marshal.GetFunctionPointerForDelegate(ReleaseWrapper);
lpVtbl[27] = (void *)Marshal.GetFunctionPointerForDelegate(EnumWarpAdapterWrapper);
lpVtbl[29] = (void *)Marshal.GetFunctionPointerForDelegate(EnumAdapterByGpuPreferenceWrapper);
#endif
return(lpVtbl);
}
/// <summary>
/// Initializes the <see cref="For{T}"/> shared state.
/// </summary>
/// <param name="factory">The factory of <see cref="ID2D1TransformMapper{T}"/> instances to use for each created effect.</param>
/// <exception cref="InvalidOperationException">Thrown if initialization is attempted with a mismatched transform factory.</exception>
public static void Initialize(Func <ID2D1TransformMapper <T> >?factory)
{
// This conceptually acts as a static constructor, and this type is
// internal, so in this very specific case locking on the type is fine.
lock (typeof(For <T>))
{
if (isInitialized)
{
// If the factory is already initialized, ensure the draw transform mapper is the same
if (d2D1DrawTransformMapperFactory != factory)
{
ThrowHelper.ThrowInvalidOperationException(
"Cannot initialize an ID2D1Effect factory for the same shader type with two different transform mappings. " +
"Make sure to only ever register a pixel shader effect with either no transform, or the same transform type.");
}
}
else
{
// Load all shader properties
Guid guid = typeof(T).GUID;
int inputCount = (int)D2D1InteropServices.GetPixelShaderInputCount <T>();
ReadOnlyMemory <byte> buffer = D2D1InteropServices.LoadPixelShaderBytecode <T>();
byte *typeAssociatedMemory = (byte *)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(For <T>), buffer.Length);
// Copy the bytecode to the target buffer
buffer.Span.CopyTo(new Span <byte>(typeAssociatedMemory, buffer.Length));
// Set the shared state and mark the type as initialized
shaderId = guid;
numberOfInputs = inputCount;
bytecode = typeAssociatedMemory;
bytecodeSize = buffer.Length;
d2D1DrawTransformMapperFactory = factory;
isInitialized = true;
}
}
}
/// <summary>
/// Initializes the <see cref="For{T}"/> shared state.
/// </summary>
/// <param name="d2D1DrawTransformMapperFactory">The factory of <see cref="ID2D1TransformMapper{T}"/> instances to use for each created effect.</param>
/// <exception cref="InvalidOperationException">Thrown if initialization is attempted with a mismatched transform factory.</exception>
public static void Initialize(Func <ID2D1TransformMapper <T> >?d2D1DrawTransformMapperFactory)
{
// This conceptually acts as a static constructor, and this type is
// internal, so in this very specific case locking on the type is fine.
lock (typeof(For <T>))
{
if (isInitialized)
{
// If the factory is already initialized, ensure the draw transform mapper is the same
if (For <T> .d2D1DrawTransformMapperFactory != d2D1DrawTransformMapperFactory)
{
ThrowHelper.ThrowInvalidOperationException(
"Cannot initialize an ID2D1Effect factory for the same shader type with two different transform mappings. " +
"Make sure to only ever register a pixel shader effect with either no transform, or the same transform type.");
}
}
else
{
// Load all shader properties
Guid shaderId = typeof(T).GUID;
ReadOnlyMemory <byte> bytecodeInfo = D2D1PixelShader.LoadBytecode <T>();
int bytecodeSize = bytecodeInfo.Length;
byte *bytecode = (byte *)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(For <T>), bytecodeSize);
D2D1BufferPrecision bufferPrecision = D2D1PixelShader.GetOutputBufferPrecision <T>();
D2D1ChannelDepth channelDepth = D2D1PixelShader.GetOutputBufferChannelDepth <T>();
D2D1PixelOptions pixelOptions = D2D1PixelShader.GetPixelOptions <T>();
// Prepare the inputs info
int inputCount = D2D1PixelShader.GetInputCount <T>();
D2D1PixelShaderInputType *inputTypes = (D2D1PixelShaderInputType *)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(For <T>), sizeof(D2D1PixelShaderInputType) * inputCount);
for (int i = 0; i < inputCount; i++)
{
inputTypes[i] = D2D1PixelShader.GetInputType <T>(i);
}
// Prepare the input descriptions
ReadOnlyMemory <D2D1InputDescription> inputDescriptionsInfo = D2D1PixelShader.GetInputDescriptions <T>();
int inputDescriptionCount = inputDescriptionsInfo.Length;
D2D1InputDescription *inputDescriptions = (D2D1InputDescription *)RuntimeHelpers.AllocateTypeAssociatedMemory(typeof(For <T>), sizeof(D2D1InputDescription) * inputDescriptionCount);
inputDescriptionsInfo.Span.CopyTo(new Span <D2D1InputDescription>(inputDescriptions, inputDescriptionCount));
// Copy the bytecode to the target buffer
bytecodeInfo.Span.CopyTo(new Span <byte>(bytecode, bytecodeSize));
// Set the shared state and mark the type as initialized
For <T> .shaderId = shaderId;
For <T> .inputCount = inputCount;
For <T> .inputTypes = inputTypes;
For <T> .inputDescriptionCount = inputDescriptionCount;
For <T> .inputDescriptions = inputDescriptions;
For <T> .pixelOptions = pixelOptions;
For <T> .bytecode = bytecode;
For <T> .bytecodeSize = bytecodeSize;
For <T> .bufferPrecision = bufferPrecision;
For <T> .channelDepth = channelDepth;
For <T> .d2D1DrawTransformMapperFactory = d2D1DrawTransformMapperFactory;
isInitialized = true;
}
}
}
