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);
}
private protected override bool GetPixelFormatSupportCore(
PixelFormat format,
TextureType type,
TextureUsage usage,
out PixelFormatProperties properties)
{
if (!MTLFormats.IsFormatSupported(format, usage, MetalFeatures))
{
properties = default(PixelFormatProperties);
return(false);
}
uint sampleCounts = 0;
for (int i = 0; i < _supportedSampleCounts.Length; i++)
{
if (_supportedSampleCounts[i])
{
sampleCounts |= (uint)(1 << i);
}
}
MTLFeatureSet maxFeatureSet = MetalFeatures.MaxFeatureSet;
uint maxArrayLayer = MTLFormats.GetMaxTextureVolume(maxFeatureSet);
uint maxWidth;
uint maxHeight;
uint maxDepth;
if (type == TextureType.Texture1D)
{
maxWidth = MTLFormats.GetMaxTexture1DWidth(maxFeatureSet);
maxHeight = 1;
maxDepth = 1;
}
else if (type == TextureType.Texture2D)
{
uint maxDimensions;
if ((usage & TextureUsage.Cubemap) != 0)
{
maxDimensions = MTLFormats.GetMaxTextureCubeDimensions(maxFeatureSet);
}
else
{
maxDimensions = MTLFormats.GetMaxTexture2DDimensions(maxFeatureSet);
}
maxWidth = maxDimensions;
maxHeight = maxDimensions;
maxDepth = 1;
}
else if (type == TextureType.Texture3D)
{
maxWidth = maxArrayLayer;
maxHeight = maxArrayLayer;
maxDepth = maxArrayLayer;
maxArrayLayer = 1;
}
else
{
throw Illegal.Value <TextureType>();
}
properties = new PixelFormatProperties(
maxWidth,
maxHeight,
maxDepth,
uint.MaxValue,
maxArrayLayer,
sampleCounts);
return(true);
}
