Ryujinx/Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs

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2019-10-13 06:02:07 +00:00
using Ryujinx.Graphics.GAL;
namespace Ryujinx.Graphics.Gpu.Image
{
static class TextureCompatibility
{
private enum FormatClass
{
Unclassified,
BCn64,
BCn128,
Bc1Rgb,
Bc1Rgba,
Bc2,
Bc3,
Bc4,
Bc5,
Bc6,
Bc7
}
public static bool FormatCompatible(FormatInfo lhs, FormatInfo rhs)
{
if (IsDsFormat(lhs.Format) || IsDsFormat(rhs.Format))
{
return lhs.Format == rhs.Format;
}
if (lhs.Format.IsAstc() || rhs.Format.IsAstc())
{
return lhs.Format == rhs.Format;
}
if (lhs.IsCompressed && rhs.IsCompressed)
{
FormatClass lhsClass = GetFormatClass(lhs.Format);
FormatClass rhsClass = GetFormatClass(rhs.Format);
return lhsClass == rhsClass;
}
else
{
return lhs.BytesPerPixel == rhs.BytesPerPixel;
}
}
private static FormatClass GetFormatClass(Format format)
{
switch (format)
{
case Format.Bc1RgbSrgb:
case Format.Bc1RgbUnorm:
return FormatClass.Bc1Rgb;
case Format.Bc1RgbaSrgb:
case Format.Bc1RgbaUnorm:
return FormatClass.Bc1Rgba;
case Format.Bc2Srgb:
case Format.Bc2Unorm:
return FormatClass.Bc2;
case Format.Bc3Srgb:
case Format.Bc3Unorm:
return FormatClass.Bc3;
case Format.Bc4Snorm:
case Format.Bc4Unorm:
return FormatClass.Bc4;
case Format.Bc5Snorm:
case Format.Bc5Unorm:
return FormatClass.Bc5;
case Format.Bc6HSfloat:
case Format.Bc6HUfloat:
return FormatClass.Bc6;
case Format.Bc7Srgb:
case Format.Bc7Unorm:
return FormatClass.Bc7;
}
return FormatClass.Unclassified;
}
private static bool IsDsFormat(Format format)
{
switch (format)
{
case Format.D16Unorm:
case Format.D24X8Unorm:
case Format.D24UnormS8Uint:
case Format.D32Float:
case Format.D32FloatS8Uint:
return true;
}
return false;
}
}
}