protected override bool GetPixelFormatSupportCore(
PixelFormat format,
TextureType type,
TextureUsage usage,
out PixelFormatProperties properties)
{
if (D3D11Formats.IsUnsupportedFormat(format))
{
properties = default(PixelFormatProperties);
return(false);
}
Format dxgiFormat = D3D11Formats.ToDxgiFormat(format, (usage & TextureUsage.DepthStencil) != 0);
FormatSupport fs = _device.CheckFormatSupport(dxgiFormat);
if ((usage & TextureUsage.RenderTarget) != 0 && (fs & FormatSupport.RenderTarget) == 0 ||
(usage & TextureUsage.DepthStencil) != 0 && (fs & FormatSupport.DepthStencil) == 0 ||
(usage & TextureUsage.Sampled) != 0 && (fs & FormatSupport.ShaderSample) == 0 ||
(usage & TextureUsage.Cubemap) != 0 && (fs & FormatSupport.TextureCube) == 0 ||
(usage & TextureUsage.Storage) != 0 && (fs & FormatSupport.TypedUnorderedAccessView) == 0)
{
properties = default(PixelFormatProperties);
return(false);
}
const uint MaxTextureDimension = 16384;
const uint MaxVolumeExtent = 2048;
uint sampleCounts = 0;
if (CheckFormatMultisample(dxgiFormat, 1))
{
sampleCounts |= (1 << 0);
}
if (CheckFormatMultisample(dxgiFormat, 2))
{
sampleCounts |= (1 << 1);
}
if (CheckFormatMultisample(dxgiFormat, 4))
{
sampleCounts |= (1 << 2);
}
if (CheckFormatMultisample(dxgiFormat, 8))
{
sampleCounts |= (1 << 3);
}
if (CheckFormatMultisample(dxgiFormat, 16))
{
sampleCounts |= (1 << 4);
}
if (CheckFormatMultisample(dxgiFormat, 32))
{
sampleCounts |= (1 << 5);
}
properties = new PixelFormatProperties(
MaxTextureDimension,
type == TextureType.Texture1D ? 1 : MaxTextureDimension,
type != TextureType.Texture3D ? 1 : MaxVolumeExtent,
uint.MaxValue,
type == TextureType.Texture3D ? 1 : MaxVolumeExtent,
sampleCounts);
return(true);
}