private DxgiSampleDesc CheckMultisamplingSupport()
{
DxgiSampleDesc sampleDesc = new DxgiSampleDesc(1, 0);
D3D11FormatSupport formatSupport;
if (this.d3dDevice.CheckFormatSupport(DxgiFormat.B8G8R8A8UNorm, out formatSupport))
{
return(sampleDesc);
}
if (!formatSupport.HasFlag(D3D11FormatSupport.MultisampleResolve | D3D11FormatSupport.MultisampleRenderTarget))
{
return(sampleDesc);
}
for (uint i = 2; i <= D3D11Constants.MaxMultisampleSampleCount; i *= 2)
{
uint numQualityLevels;
if (!this.d3dDevice.CheckMultisampleQualityLevels(DxgiFormat.B8G8R8A8UNorm, i, out numQualityLevels))
{
if (numQualityLevels > 0)
{
sampleDesc.Count = i;
sampleDesc.Quality = numQualityLevels - 1;
}
}
}
return(sampleDesc);
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Texture2DDesc"/> struct.
/// </summary>
/// <param name="format">The texture format.</param>
/// <param name="width">The texture width (in texels).</param>
/// <param name="height">The texture height (in texels).</param>
/// <param name="arraySize">The number of textures in the texture array.</param>
public D3D11Texture2DDesc(DxgiFormat format, uint width, uint height, uint arraySize)
{
this.width = width;
this.height = height;
this.mipLevels = 0;
this.arraySize = arraySize;
this.format = format;
this.sampleDesc = new DxgiSampleDesc(1, 0);
this.usage = D3D11Usage.Default;
this.bindOptions = D3D11BindOptions.ShaderResource;
this.cpuAccessOptions = 0;
this.miscOptions = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Texture2DDesc"/> struct.
/// </summary>
/// <param name="format">The texture format.</param>
/// <param name="width">The texture width (in texels).</param>
/// <param name="height">The texture height (in texels).</param>
/// <param name="arraySize">The number of textures in the texture array.</param>
/// <param name="mipLevels">The maximum number of mipmap levels in the texture.</param>
/// <param name="bindOptions">Options for binding to pipeline stages.</param>
/// <param name="usage">Identifies how the texture is to be read from and written to.</param>
public D3D11Texture2DDesc(
DxgiFormat format,
uint width,
uint height,
uint arraySize,
uint mipLevels,
D3D11BindOptions bindOptions,
D3D11Usage usage)
{
this.width = width;
this.height = height;
this.mipLevels = mipLevels;
this.arraySize = arraySize;
this.format = format;
this.sampleDesc = new DxgiSampleDesc(1, 0);
this.usage = usage;
this.bindOptions = bindOptions;
this.cpuAccessOptions = 0;
this.miscOptions = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Texture2DDesc"/> struct.
/// </summary>
/// <param name="format">The texture format.</param>
/// <param name="width">The texture width (in texels).</param>
/// <param name="height">The texture height (in texels).</param>
/// <param name="arraySize">The number of textures in the texture array.</param>
/// <param name="mipLevels">The maximum number of mipmap levels in the texture.</param>
/// <param name="bindOptions">Options for binding to pipeline stages.</param>
/// <param name="usage">Identifies how the texture is to be read from and written to.</param>
/// <param name="cpuAccessOptions">Options to specify the types of CPU access allowed.</param>
/// <param name="sampleCount">The sample count.</param>
/// <param name="sampleQuality">The sample quality.</param>
/// <param name="miscOptions">Options that identify other, less common resource options.</param>
public D3D11Texture2DDesc(
DxgiFormat format,
uint width,
uint height,
uint arraySize,
uint mipLevels,
D3D11BindOptions bindOptions,
D3D11Usage usage,
D3D11CpuAccessOptions cpuAccessOptions,
uint sampleCount,
uint sampleQuality,
D3D11ResourceMiscOptions miscOptions)
{
this.width = width;
this.height = height;
this.mipLevels = mipLevels;
this.arraySize = arraySize;
this.format = format;
this.sampleDesc = new DxgiSampleDesc(sampleCount, sampleQuality);
this.usage = usage;
this.bindOptions = bindOptions;
this.cpuAccessOptions = cpuAccessOptions;
this.miscOptions = miscOptions;
}
private void CreateDeviceResources()
{
D3D11FeatureLevel[] featureLevels;
if (this.useHighestFeatureLevel)
{
if (this.d3dFeatureLevel == D3D11FeatureLevel.FeatureLevel91)
{
featureLevels = new D3D11FeatureLevel[]
{
D3D11FeatureLevel.FeatureLevel111,
D3D11FeatureLevel.FeatureLevel110,
D3D11FeatureLevel.FeatureLevel101,
D3D11FeatureLevel.FeatureLevel100,
D3D11FeatureLevel.FeatureLevel93,
D3D11FeatureLevel.FeatureLevel92,
D3D11FeatureLevel.FeatureLevel91
};
}
else
{
featureLevels = Enum.GetValues(typeof(D3D11FeatureLevel))
.Cast <D3D11FeatureLevel>()
.Where(t => t >= this.d3dFeatureLevel)
.OrderByDescending(t => t)
.ToArray();
}
}
else
{
featureLevels = new D3D11FeatureLevel[]
{
this.d3dFeatureLevel
};
}
D3D11CreateDeviceOptions options = D3D11CreateDeviceOptions.BgraSupport;
try
{
this.d3dDriverType = D3D11DriverType.Hardware;
D3D11Device.CreateDevice(
null,
this.d3dDriverType,
options,
featureLevels,
out this.d3dDevice,
out this.d3dFeatureLevel,
out this.d3dContext);
}
catch (Exception ex)
{
if (ex.HResult == DxgiError.Unsupported)
{
this.d3dDriverType = D3D11DriverType.Warp;
D3D11Device.CreateDevice(
null,
this.d3dDriverType,
options,
featureLevels,
out this.d3dDevice,
out this.d3dFeatureLevel,
out this.d3dContext);
}
else
{
throw;
}
}
if (this.preferMultisampling)
{
this.d3dSampleDesc = this.CheckMultisamplingSupport();
}
else
{
this.d3dSampleDesc = new DxgiSampleDesc(1, 0);
}
}
