/// <summary>
/// Gets the sampler state with the given requested quality level.
/// </summary>
/// <param name="qualityLevel">The quality level to get the sampler state for.</param>
internal D3D11.SamplerState GetSamplerState(TextureSamplerQualityLevel qualityLevel)
{
switch (qualityLevel)
{
case TextureSamplerQualityLevel.High:
return(m_samplerStateHigh.Value);
case TextureSamplerQualityLevel.Medium:
return(m_samplerStateMedium.Value);
case TextureSamplerQualityLevel.Low:
return(m_samplerStateLow.Value);
}
return(m_samplerStateLow.Value);
}
/// <summary>
/// Creates a default texture sampler state.
/// </summary>
/// <param name="device">The device to create the state for.</param>
/// <param name="samplerQualityLevel">The target sampler quality</param>
public static D3D11.ID3D11SamplerState CreateDefaultTextureSampler(EngineDevice device, TextureSamplerQualityLevel samplerQualityLevel)
{
device.EnsureNotNull(nameof(device));
// Set state parameters
var samplerDesk = D3D11.SamplerDescription.Default;
switch (device.DriverLevel)
{
case HardwareDriverLevel.Direct3D11:
case HardwareDriverLevel.Direct3D10:
switch (samplerQualityLevel)
{
case TextureSamplerQualityLevel.High:
if (!device.IsHighDetailSupported)
{
goto case TextureSamplerQualityLevel.Low;
}
samplerDesk.AddressU = D3D11.TextureAddressMode.Wrap;
samplerDesk.AddressV = D3D11.TextureAddressMode.Wrap;
samplerDesk.Filter = D3D11.Filter.Anisotropic;
samplerDesk.MaxAnisotropy = 16;
break;
case TextureSamplerQualityLevel.Medium:
if (!device.IsHighDetailSupported)
{
goto case TextureSamplerQualityLevel.Low;
}
samplerDesk.AddressU = D3D11.TextureAddressMode.Wrap;
samplerDesk.AddressV = D3D11.TextureAddressMode.Wrap;
samplerDesk.Filter = D3D11.Filter.Anisotropic;
samplerDesk.MaxAnisotropy = 8;
break;
case TextureSamplerQualityLevel.Low:
samplerDesk.AddressU = D3D11.TextureAddressMode.Wrap;
samplerDesk.AddressV = D3D11.TextureAddressMode.Wrap;
samplerDesk.Filter = D3D11.Filter.MinMagMipLinear;
break;
}
break;
default:
samplerDesk.AddressU = D3D11.TextureAddressMode.Wrap;
samplerDesk.AddressV = D3D11.TextureAddressMode.Wrap;
samplerDesk.Filter = D3D11.Filter.MinMagMipLinear;
break;
}
// Create the state object finally
return(device.DeviceD3D11_1.CreateSamplerState(samplerDesk));
}
