public IMappedResource Map()
{
if (_backTexture == null ||
_backTexture.Description.Width != Texture.Description.Width ||
_backTexture.Description.Height != Texture.Description.Height)
{
var desc = new d3d.Texture2DDescription
{
Width = Texture.Description.Width,
Height = Texture.Description.Height,
MipLevels = Texture.Description.MipLevels,
ArraySize = Texture.Description.ArraySize,
Format = Texture.Description.Format,
Usage = d3d.ResourceUsage.Staging,
BindFlags = d3d.BindFlags.None,
CpuAccessFlags = d3d.CpuAccessFlags.Read,
OptionFlags = d3d.ResourceOptionFlags.None,
SampleDescription = new dxgi.SampleDescription(1, 0)
};
_backTexture?.Dispose();
_backTexture = new d3d.Texture2D(Texture.Device, desc);
}
Texture.Device.ImmediateContext.CopyResource(Texture, _backTexture);
return(new MappedResource(_backTexture));
}
public ISpriteTexture CreateSpriteTexture(int width, int height, byte[] data)
{
if (width <= 0 || width > 65536)
{
throw new ArgumentOutOfRangeException(nameof(width), "Must be between 1 and 65536");
}
if (height <= 0 || height > 65536)
{
throw new ArgumentOutOfRangeException(nameof(height), "Must be between 1 and 65536");
}
var desc = new d3d.Texture2DDescription
{
Width = width,
Height = height,
MipLevels = 1,
ArraySize = 1,
Format = dxgi.Format.B8G8R8A8_UNorm,
CpuAccessFlags = d3d.CpuAccessFlags.None,
OptionFlags = d3d.ResourceOptionFlags.None,
SampleDescription = new dxgi.SampleDescription(1, 0)
};
desc.Usage = d3d.ResourceUsage.Immutable;
desc.BindFlags = d3d.BindFlags.ShaderResource;
var srcDataPtr = Marshal.UnsafeAddrOfPinnedArrayElement(data, 0);
var dataSource = new SharpDX.DataRectangle(srcDataPtr, width * sizeof(int));
var texture = new d3d.Texture2D(Device, desc, new[] { dataSource });
var shaderResourceView = new d3d.ShaderResourceView(Device, texture);
return(new CSpriteTexture(texture, shaderResourceView));
}
public ISpriteTexture CreateSpriteTexture(int width, int height)
{
if (width <= 0 || width > 65536)
{
throw new ArgumentOutOfRangeException(nameof(width), "Must be between 1 and 65536");
}
if (height <= 0 || height > 65536)
{
throw new ArgumentOutOfRangeException(nameof(height), "Must be between 1 and 65536");
}
var desc = new d3d.Texture2DDescription
{
Width = width,
Height = height,
MipLevels = 1,
ArraySize = 1,
Format = dxgi.Format.B8G8R8A8_UNorm,
CpuAccessFlags = d3d.CpuAccessFlags.None,
OptionFlags = d3d.ResourceOptionFlags.None,
SampleDescription = new dxgi.SampleDescription(1, 0)
};
desc.Usage = d3d.ResourceUsage.Default;
desc.BindFlags = d3d.BindFlags.ShaderResource | d3d.BindFlags.RenderTarget;
var texture = new d3d.Texture2D(Device, desc);
var shaderResourceView = new d3d.ShaderResourceView(Device, texture);
return(new CSpriteTexture(texture, shaderResourceView));
}
public MappedResource(d3d.Texture2D texture)
{
var dataBox = texture.Device.ImmediateContext.MapSubresource(texture, 0,
d3d.MapMode.Read, d3d.MapFlags.None, out var DataStream);
Texture = texture;
Stride = dataBox.RowPitch;
Length = dataBox.SlicePitch;
Data = dataBox.DataPointer;
}
public ISurface CreateSurface(
int width,
int height,
PixelFormat pixelFormat,
SurfaceType type,
DataResource dataResource = null)
{
if (width <= 0 || width > 65536)
{
throw new ArgumentOutOfRangeException(nameof(width), "Must be between 1 and 65536");
}
if (height <= 0 || height > 65536)
{
throw new ArgumentOutOfRangeException(nameof(height), "Must be between 1 and 65536");
}
var desc = new d3d.Texture2DDescription
{
Width = width,
Height = height,
MipLevels = 1,
ArraySize = 1,
Format = dxgi.Format.B8G8R8A8_UNorm,
CpuAccessFlags = d3d.CpuAccessFlags.None,
OptionFlags = d3d.ResourceOptionFlags.None,
SampleDescription = new dxgi.SampleDescription(1, 0)
};
switch (type)
{
case SurfaceType.Input:
desc.Usage = d3d.ResourceUsage.Immutable;
desc.BindFlags = d3d.BindFlags.ShaderResource;
break;
case SurfaceType.Output:
desc.Usage = d3d.ResourceUsage.Default;
desc.BindFlags = d3d.BindFlags.ShaderResource | d3d.BindFlags.RenderTarget;
break;
case SurfaceType.InputOutput:
desc.Usage = d3d.ResourceUsage.Default;
desc.BindFlags = d3d.BindFlags.ShaderResource | d3d.BindFlags.RenderTarget;
break;
}
d3d.Texture2D texture;
if (dataResource != null)
{
var srcDataPtr = Marshal.UnsafeAddrOfPinnedArrayElement(dataResource.Data, 0);
var dataSource = new SharpDX.DataRectangle(srcDataPtr, dataResource.Stride);
texture = new d3d.Texture2D(Device, desc, new[] { dataSource });
}
else
{
texture = new d3d.Texture2D(Device, desc);
}
var shaderResourceView = new d3d.ShaderResourceView(Device, texture);
return(new CSurface(texture, shaderResourceView));
}
public CSurface(d3d.Texture2D texture, d3d.ShaderResourceView shaderResourceView)
{
Texture = texture;
ShaderResourceView = shaderResourceView;
}
