internal static uint GetMaxTextureCubeDimensions(MTLFeatureSet fs)
{
switch (fs)
{
case MTLFeatureSet.iOS_GPUFamily1_v1:
case MTLFeatureSet.iOS_GPUFamily2_v1:
return(4096);
case MTLFeatureSet.iOS_GPUFamily1_v2:
case MTLFeatureSet.iOS_GPUFamily2_v2:
case MTLFeatureSet.iOS_GPUFamily1_v3:
case MTLFeatureSet.iOS_GPUFamily2_v3:
case MTLFeatureSet.iOS_GPUFamily1_v4:
case MTLFeatureSet.iOS_GPUFamily2_v4:
case MTLFeatureSet.tvOS_GPUFamily1_v1:
case MTLFeatureSet.tvOS_GPUFamily1_v2:
case MTLFeatureSet.tvOS_GPUFamily1_v3:
return(8192);
case MTLFeatureSet.iOS_GPUFamily3_v1:
case MTLFeatureSet.iOS_GPUFamily3_v2:
case MTLFeatureSet.iOS_GPUFamily3_v3:
case MTLFeatureSet.iOS_GPUFamily4_v1:
case MTLFeatureSet.tvOS_GPUFamily2_v1:
case MTLFeatureSet.macOS_GPUFamily1_v1:
case MTLFeatureSet.macOS_GPUFamily1_v2:
case MTLFeatureSet.macOS_GPUFamily1_v3:
return(16384);
default:
return(4096);
}
}
public MTLFeatureSupport(MTLDevice device)
{
foreach (MTLFeatureSet set in Enum.GetValues(typeof(MTLFeatureSet)))
{
if (device.supportsFeatureSet(set))
{
_supportedFeatureSets.Add(set);
MaxFeatureSet = set;
}
}
IsMacOS = IsSupported(MTLFeatureSet.macOS_GPUFamily1_v1) ||
IsSupported(MTLFeatureSet.macOS_GPUFamily1_v2) ||
IsSupported(MTLFeatureSet.macOS_GPUFamily1_v3);
}
internal static uint GetMaxTextureVolume(MTLFeatureSet fs)
{
return(2048);
}
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);
}
public bool IsSupported(MTLFeatureSet featureSet) => _supportedFeatureSets.Contains(featureSet);