IShaderResourceView GetSrv(ref ShaderResourceViewDescription viewDesc)
{
CShaderResourceView view = null;
foreach (var v in srvs) { if (v.DescEquals(ref viewDesc)) { view = v; break; } }
if (view == null)
{
view = new CShaderResourceView(this, GetTexture(), ref viewDesc);
srvs.Add(view);
}
return view;
}
public static bool Equals(ref ShaderResourceViewDescription desc1, ref ShaderResourceViewDescription desc2)
{
switch (desc1.Dimension)
{
case ShaderResourceViewDimension.Unknown:
return desc2.Dimension == ShaderResourceViewDimension.Unknown;
case ShaderResourceViewDimension.Buffer:
return desc2.Dimension == ShaderResourceViewDimension.Buffer &&
desc1.FormatID == desc2.FormatID &&
desc1.FirstElement == desc2.FirstElement &&
desc1.ElementCount == desc2.ElementCount;
case ShaderResourceViewDimension.Texture1D:
return desc2.Dimension == ShaderResourceViewDimension.Texture1D &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels;
case ShaderResourceViewDimension.Texture1DArray:
return desc2.Dimension == ShaderResourceViewDimension.Texture1DArray &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels &&
desc1.FirstArraySlice == desc2.FirstArraySlice &&
desc1.ArraySize == desc2.ArraySize;
case ShaderResourceViewDimension.Texture2D:
return desc2.Dimension == ShaderResourceViewDimension.Texture2D &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels;
case ShaderResourceViewDimension.Texture2DArray:
return desc2.Dimension == ShaderResourceViewDimension.Texture2DArray &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels &&
desc1.FirstArraySlice == desc2.FirstArraySlice &&
desc1.ArraySize == desc2.ArraySize;
case ShaderResourceViewDimension.Texture2DMultisampled:
return desc2.Dimension == ShaderResourceViewDimension.Texture2DMultisampled &&
desc1.FormatID == desc2.FormatID;
case ShaderResourceViewDimension.Texture2DMultisampledArray:
return desc2.Dimension == ShaderResourceViewDimension.Texture2DMultisampledArray &&
desc1.FormatID == desc2.FormatID &&
desc1.FirstArraySlice == desc2.FirstArraySlice &&
desc1.ArraySize == desc2.ArraySize;
case ShaderResourceViewDimension.Texture3D:
return desc2.Dimension == ShaderResourceViewDimension.Texture3D &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels;
case ShaderResourceViewDimension.TextureCube:
return desc2.Dimension == ShaderResourceViewDimension.TextureCube &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels;
case ShaderResourceViewDimension.TextureCubeArray:
return desc2.Dimension == ShaderResourceViewDimension.TextureCubeArray &&
desc1.FormatID == desc2.FormatID &&
desc1.MostDetailedMip == desc2.MostDetailedMip &&
desc1.MipLevels == desc2.MipLevels &&
desc1.FirstArraySlice == desc2.FirstArraySlice &&
desc1.ArraySize == desc2.ArraySize;
default: throw new ShouldNeverHappenException();
}
}
public static void CreateForBuffer(int formatID, int firstElement, int elementCount, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.Buffer,
FormatID = formatID,
FirstElement = firstElement,
ElementCount = elementCount
};
}
public static void CreateForTextureCubeArray(int formatID, int mostDetailedMip, int mipLevels, int firstArraySlice, int arraySize, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.TextureCubeArray,
FormatID = formatID,
MostDetailedMip = mostDetailedMip,
MipLevels = mipLevels,
FirstArraySlice = firstArraySlice,
ArraySize = arraySize
};
}
public static void CreateForTextureCube(int formatID, int mostDetailedMip, int mipLevels, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.TextureCube,
FormatID = formatID,
MostDetailedMip = mostDetailedMip,
MipLevels = mipLevels
};
}
public static void CreateForTexture2DMultisampledArray(int formatID, int firstArraySlice, int arraySize, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.Texture2DMultisampledArray,
FormatID = formatID,
FirstArraySlice = firstArraySlice,
ArraySize = arraySize
};
}
public static void CreateForTexture2DMultisampled(int formatID, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.Texture2DMultisampled,
FormatID = formatID
};
}
public static void CreateForBufferEx(int formatID, int firstElement, int elementCount, ShaderResourceViewExtendedBufferFlags flags, out ShaderResourceViewDescription desc)
{
desc = new ShaderResourceViewDescription
{
Dimension = ShaderResourceViewDimension.ExtendedBuffer,
FirstElement = firstElement,
ElementCount = elementCount,
ExtendedBufferFlags = flags
};
}
