public D3D11Texture(ID3D11Device device, ref TextureDescription description)
{
_device = device;
Width = description.Width;
Height = description.Height;
Depth = description.Depth;
MipLevels = description.MipLevels;
ArrayLayers = description.ArrayLayers;
Format = description.Format;
Usage = description.Usage;
Type = description.Type;
SampleCount = description.SampleCount;
DxgiFormat = D3D11Formats.ToDxgiFormat(
description.Format,
(description.Usage & TextureUsage.DepthStencil) == TextureUsage.DepthStencil);
TypelessDxgiFormat = D3D11Formats.GetTypelessFormat(DxgiFormat);
CpuAccessFlags cpuFlags = CpuAccessFlags.None;
ResourceUsage resourceUsage = ResourceUsage.Default;
BindFlags bindFlags = BindFlags.None;
ResourceOptionFlags optionFlags = ResourceOptionFlags.None;
if ((description.Usage & TextureUsage.RenderTarget) == TextureUsage.RenderTarget)
{
bindFlags |= BindFlags.RenderTarget;
}
if ((description.Usage & TextureUsage.DepthStencil) == TextureUsage.DepthStencil)
{
bindFlags |= BindFlags.DepthStencil;
}
if ((description.Usage & TextureUsage.Sampled) == TextureUsage.Sampled)
{
bindFlags |= BindFlags.ShaderResource;
}
if ((description.Usage & TextureUsage.Storage) == TextureUsage.Storage)
{
bindFlags |= BindFlags.UnorderedAccess;
}
if ((description.Usage & TextureUsage.Staging) == TextureUsage.Staging)
{
cpuFlags = CpuAccessFlags.Read | CpuAccessFlags.Write;
resourceUsage = ResourceUsage.Staging;
}
if ((description.Usage & TextureUsage.GenerateMipmaps) != 0)
{
bindFlags |= BindFlags.RenderTarget | BindFlags.ShaderResource;
optionFlags |= ResourceOptionFlags.GenerateMips;
}
int arraySize = (int)description.ArrayLayers;
if ((description.Usage & TextureUsage.Cubemap) == TextureUsage.Cubemap)
{
optionFlags = ResourceOptionFlags.TextureCube;
arraySize *= 6;
}
int roundedWidth = (int)description.Width;
int roundedHeight = (int)description.Height;
if (FormatHelpers.IsCompressedFormat(description.Format))
{
roundedWidth = ((roundedWidth + 3) / 4) * 4;
roundedHeight = ((roundedHeight + 3) / 4) * 4;
}
if (Type == TextureType.Texture1D)
{
Texture1DDescription desc1D = new Texture1DDescription()
{
Width = roundedWidth,
MipLevels = (int)description.MipLevels,
ArraySize = arraySize,
Format = TypelessDxgiFormat,
BindFlags = bindFlags,
CpuAccessFlags = cpuFlags,
Usage = resourceUsage,
OptionFlags = optionFlags,
};
DeviceTexture = device.CreateTexture1D(desc1D);
}
else if (Type == TextureType.Texture2D)
{
Texture2DDescription deviceDescription = new Texture2DDescription()
{
Width = roundedWidth,
Height = roundedHeight,
MipLevels = (int)description.MipLevels,
ArraySize = arraySize,
Format = TypelessDxgiFormat,
BindFlags = bindFlags,
CpuAccessFlags = cpuFlags,
Usage = resourceUsage,
SampleDescription = new Vortice.DXGI.SampleDescription((int)FormatHelpers.GetSampleCountUInt32(SampleCount), 0),
OptionFlags = optionFlags,
};
DeviceTexture = device.CreateTexture2D(deviceDescription);
}
else
{
Debug.Assert(Type == TextureType.Texture3D);
Texture3DDescription desc3D = new Texture3DDescription()
{
Width = roundedWidth,
Height = roundedHeight,
Depth = (int)description.Depth,
MipLevels = (int)description.MipLevels,
Format = TypelessDxgiFormat,
BindFlags = bindFlags,
CpuAccessFlags = cpuFlags,
Usage = resourceUsage,
OptionFlags = optionFlags,
};
DeviceTexture = device.CreateTexture3D(desc3D);
}
}
