forked from Mirror/Ryujinx
c3a5716a95
* Add copy dependency for some incompatible texture formats * Simplify compatibility check
916 lines
No EOL
41 KiB
C#
916 lines
No EOL
41 KiB
C#
using Ryujinx.Common;
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using Ryujinx.Graphics.GAL;
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using Ryujinx.Graphics.Texture;
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using System;
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namespace Ryujinx.Graphics.Gpu.Image
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{
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/// <summary>
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/// Texture format compatibility checks.
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/// </summary>
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static class TextureCompatibility
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{
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private enum FormatClass
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{
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Unclassified,
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Bc1Rgba,
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Bc2,
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Bc3,
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Bc4,
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Bc5,
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Bc6,
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Bc7,
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Etc2Rgb,
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Etc2Rgba,
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Astc4x4,
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Astc5x4,
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Astc5x5,
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Astc6x5,
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Astc6x6,
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Astc8x5,
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Astc8x6,
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Astc8x8,
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Astc10x5,
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Astc10x6,
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Astc10x8,
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Astc10x10,
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Astc12x10,
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Astc12x12
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}
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/// <summary>
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/// Checks if a format is host incompatible.
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/// </summary>
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/// <remarks>
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/// Host incompatible formats can't be used directly, the texture data needs to be converted
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/// to a compatible format first.
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/// </remarks>
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/// <param name="info">Texture information</param>
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/// <param name="caps">Host GPU capabilities</param>
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/// <returns>True if the format is incompatible, false otherwise</returns>
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public static bool IsFormatHostIncompatible(TextureInfo info, Capabilities caps)
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{
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Format originalFormat = info.FormatInfo.Format;
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return ToHostCompatibleFormat(info, caps).Format != originalFormat;
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}
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/// <summary>
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/// Converts a incompatible format to a host compatible format, or return the format directly
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/// if it is already host compatible.
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/// </summary>
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/// <remarks>
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/// This can be used to convert a incompatible compressed format to the decompressor
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/// output format.
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/// </remarks>
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/// <param name="info">Texture information</param>
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/// <param name="caps">Host GPU capabilities</param>
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/// <returns>A host compatible format</returns>
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public static FormatInfo ToHostCompatibleFormat(TextureInfo info, Capabilities caps)
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{
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// The host API does not support those compressed formats.
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// We assume software decompression will be done for those textures,
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// and so we adjust the format here to match the decompressor output.
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if (!caps.SupportsAstcCompression)
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{
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if (info.FormatInfo.Format.IsAstcUnorm())
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{
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return GraphicsConfig.EnableTextureRecompression
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? new FormatInfo(Format.Bc7Unorm, 4, 4, 16, 4)
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: new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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}
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else if (info.FormatInfo.Format.IsAstcSrgb())
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{
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return GraphicsConfig.EnableTextureRecompression
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? new FormatInfo(Format.Bc7Srgb, 4, 4, 16, 4)
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: new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4);
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}
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}
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if (!HostSupportsBcFormat(info.FormatInfo.Format, info.Target, caps))
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{
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switch (info.FormatInfo.Format)
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{
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case Format.Bc1RgbaSrgb:
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case Format.Bc2Srgb:
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case Format.Bc3Srgb:
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case Format.Bc7Srgb:
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return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4);
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case Format.Bc1RgbaUnorm:
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case Format.Bc2Unorm:
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case Format.Bc3Unorm:
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case Format.Bc7Unorm:
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return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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case Format.Bc4Unorm:
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return new FormatInfo(Format.R8Unorm, 1, 1, 1, 1);
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case Format.Bc4Snorm:
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return new FormatInfo(Format.R8Snorm, 1, 1, 1, 1);
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case Format.Bc5Unorm:
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return new FormatInfo(Format.R8G8Unorm, 1, 1, 2, 2);
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case Format.Bc5Snorm:
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return new FormatInfo(Format.R8G8Snorm, 1, 1, 2, 2);
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case Format.Bc6HSfloat:
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case Format.Bc6HUfloat:
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return new FormatInfo(Format.R16G16B16A16Float, 1, 1, 8, 4);
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}
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}
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if (!caps.SupportsEtc2Compression)
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{
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switch (info.FormatInfo.Format)
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{
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case Format.Etc2RgbaSrgb:
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case Format.Etc2RgbPtaSrgb:
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case Format.Etc2RgbSrgb:
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return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4);
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case Format.Etc2RgbaUnorm:
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case Format.Etc2RgbPtaUnorm:
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case Format.Etc2RgbUnorm:
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return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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}
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}
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if (!caps.SupportsR4G4Format && info.FormatInfo.Format == Format.R4G4Unorm)
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{
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if (caps.SupportsR4G4B4A4Format)
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{
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return new FormatInfo(Format.R4G4B4A4Unorm, 1, 1, 2, 4);
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}
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else
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{
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return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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}
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}
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if (info.FormatInfo.Format == Format.R4G4B4A4Unorm)
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{
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if (!caps.SupportsR4G4B4A4Format)
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{
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return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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}
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}
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else if (!caps.Supports5BitComponentFormat && info.FormatInfo.Format.Is16BitPacked())
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{
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return new FormatInfo(info.FormatInfo.Format.IsBgr() ? Format.B8G8R8A8Unorm : Format.R8G8B8A8Unorm, 1, 1, 4, 4);
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}
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return info.FormatInfo;
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}
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/// <summary>
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/// Checks if the host API supports a given texture compression format of the BC family.
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/// </summary>
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/// <param name="format">BC format to be checked</param>
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/// <param name="target">Target usage of the texture</param>
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/// <param name="caps">Host GPU Capabilities</param>
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/// <returns>True if the texture host supports the format with the given target usage, false otherwise</returns>
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public static bool HostSupportsBcFormat(Format format, Target target, Capabilities caps)
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{
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bool not3DOr3DCompressionSupported = target != Target.Texture3D || caps.Supports3DTextureCompression;
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switch (format)
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{
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case Format.Bc1RgbaSrgb:
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case Format.Bc1RgbaUnorm:
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case Format.Bc2Srgb:
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case Format.Bc2Unorm:
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case Format.Bc3Srgb:
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case Format.Bc3Unorm:
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return caps.SupportsBc123Compression && not3DOr3DCompressionSupported;
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case Format.Bc4Unorm:
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case Format.Bc4Snorm:
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case Format.Bc5Unorm:
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case Format.Bc5Snorm:
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return caps.SupportsBc45Compression && not3DOr3DCompressionSupported;
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case Format.Bc6HSfloat:
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case Format.Bc6HUfloat:
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case Format.Bc7Srgb:
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case Format.Bc7Unorm:
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return caps.SupportsBc67Compression && not3DOr3DCompressionSupported;
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}
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return true;
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}
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/// <summary>
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/// Determines whether a texture can flush its data back to guest memory.
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/// </summary>
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/// <param name="info">Texture information</param>
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/// <param name="caps">Host GPU Capabilities</param>
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/// <returns>True if the texture can flush, false otherwise</returns>
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public static bool CanTextureFlush(TextureInfo info, Capabilities caps)
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{
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if (IsFormatHostIncompatible(info, caps))
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{
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return false; // Flushing this format is not supported, as it may have been converted to another host format.
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}
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if (info.Target == Target.Texture2DMultisample ||
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info.Target == Target.Texture2DMultisampleArray)
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{
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return false; // Flushing multisample textures is not supported, the host does not allow getting their data.
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}
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return true;
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}
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/// <summary>
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/// Checks if the texture format matches with the specified texture information.
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/// </summary>
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/// <param name="lhs">Texture information to compare</param>
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/// <param name="rhs">Texture information to compare with</param>
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/// <param name="forSampler">Indicates that the texture will be used for shader sampling</param>
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/// <param name="forCopy">Indicates that the texture will be used as copy source or target</param>
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/// <returns>A value indicating how well the formats match</returns>
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public static TextureMatchQuality FormatMatches(TextureInfo lhs, TextureInfo rhs, bool forSampler, bool forCopy)
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{
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// D32F and R32F texture have the same representation internally,
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// however the R32F format is used to sample from depth textures.
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if (lhs.FormatInfo.Format == Format.D32Float && rhs.FormatInfo.Format == Format.R32Float && (forSampler || forCopy))
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{
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return TextureMatchQuality.FormatAlias;
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}
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if (forCopy)
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{
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// The 2D engine does not support depth-stencil formats, so it will instead
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// use equivalent color formats. We must also consider them as compatible.
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if (lhs.FormatInfo.Format == Format.S8Uint && rhs.FormatInfo.Format == Format.R8Unorm)
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{
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return TextureMatchQuality.FormatAlias;
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}
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if (lhs.FormatInfo.Format == Format.D16Unorm && rhs.FormatInfo.Format == Format.R16Unorm)
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{
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return TextureMatchQuality.FormatAlias;
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}
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if ((lhs.FormatInfo.Format == Format.D24UnormS8Uint ||
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lhs.FormatInfo.Format == Format.S8UintD24Unorm) && rhs.FormatInfo.Format == Format.B8G8R8A8Unorm)
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{
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return TextureMatchQuality.FormatAlias;
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}
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}
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return lhs.FormatInfo.Format == rhs.FormatInfo.Format ? TextureMatchQuality.Perfect : TextureMatchQuality.NoMatch;
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}
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/// <summary>
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/// Checks if the texture layout specified matches with this texture layout.
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/// The layout information is composed of the Stride for linear textures, or GOB block size
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/// for block linear textures.
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/// </summary>
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/// <param name="lhs">Texture information to compare</param>
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/// <param name="rhs">Texture information to compare with</param>
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/// <returns>True if the layout matches, false otherwise</returns>
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public static bool LayoutMatches(TextureInfo lhs, TextureInfo rhs)
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{
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if (lhs.IsLinear != rhs.IsLinear)
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{
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return false;
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}
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// For linear textures, gob block sizes are ignored.
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// For block linear textures, the stride is ignored.
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if (rhs.IsLinear)
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{
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return lhs.Stride == rhs.Stride;
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}
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else
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{
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return lhs.GobBlocksInY == rhs.GobBlocksInY &&
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lhs.GobBlocksInZ == rhs.GobBlocksInZ;
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}
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}
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/// <summary>
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/// Obtain the minimum compatibility level of two provided view compatibility results.
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/// </summary>
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/// <param name="first">The first compatibility level</param>
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/// <param name="second">The second compatibility level</param>
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/// <returns>The minimum compatibility level of two provided view compatibility results</returns>
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public static TextureViewCompatibility PropagateViewCompatibility(TextureViewCompatibility first, TextureViewCompatibility second)
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{
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if (first == TextureViewCompatibility.Incompatible || second == TextureViewCompatibility.Incompatible)
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{
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return TextureViewCompatibility.Incompatible;
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}
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else if (first == TextureViewCompatibility.LayoutIncompatible || second == TextureViewCompatibility.LayoutIncompatible)
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{
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return TextureViewCompatibility.LayoutIncompatible;
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}
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else if (first == TextureViewCompatibility.CopyOnly || second == TextureViewCompatibility.CopyOnly)
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{
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return TextureViewCompatibility.CopyOnly;
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}
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else
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{
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return TextureViewCompatibility.Full;
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}
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}
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/// <summary>
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/// Checks if the sizes of two texture levels are copy compatible.
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/// </summary>
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/// <param name="lhs">Texture information of the texture view</param>
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/// <param name="rhs">Texture information of the texture view to match against</param>
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/// <param name="lhsLevel">Mipmap level of the texture view in relation to this texture</param>
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/// <param name="rhsLevel">Mipmap level of the texture view in relation to the second texture</param>
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/// <returns>True if both levels are view compatible</returns>
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public static bool CopySizeMatches(TextureInfo lhs, TextureInfo rhs, int lhsLevel, int rhsLevel)
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{
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Size size = GetAlignedSize(lhs, lhsLevel);
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Size otherSize = GetAlignedSize(rhs, rhsLevel);
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if (size.Width == otherSize.Width && size.Height == otherSize.Height)
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{
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return true;
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}
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else if (lhs.IsLinear && rhs.IsLinear)
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{
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// Copy between linear textures with matching stride.
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int stride = BitUtils.AlignUp(Math.Max(1, lhs.Stride >> lhsLevel), Constants.StrideAlignment);
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return stride == rhs.Stride;
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// Checks if the sizes of two given textures are view compatible.
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/// </summary>
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/// <param name="lhs">Texture information of the texture view</param>
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/// <param name="rhs">Texture information of the texture view to match against</param>
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/// <param name="exact">Indicates if the sizes must be exactly equal</param>
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/// <param name="level">Mipmap level of the texture view in relation to this texture</param>
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/// <returns>The view compatibility level of the view sizes</returns>
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public static TextureViewCompatibility ViewSizeMatches(TextureInfo lhs, TextureInfo rhs, bool exact, int level)
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{
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Size lhsAlignedSize = GetAlignedSize(lhs, level);
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Size rhsAlignedSize = GetAlignedSize(rhs);
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Size lhsSize = GetSizeInBlocks(lhs, level);
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Size rhsSize = GetSizeInBlocks(rhs);
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bool alignedWidthMatches = lhsAlignedSize.Width == rhsAlignedSize.Width;
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if (lhs.FormatInfo.BytesPerPixel != rhs.FormatInfo.BytesPerPixel && IsIncompatibleFormatAliasingAllowed(lhs.FormatInfo, rhs.FormatInfo))
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{
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alignedWidthMatches = lhsSize.Width * lhs.FormatInfo.BytesPerPixel == rhsSize.Width * rhs.FormatInfo.BytesPerPixel;
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}
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TextureViewCompatibility result = TextureViewCompatibility.Full;
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// For copies, we can copy a subset of the 3D texture slices,
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// so the depth may be different in this case.
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if (rhs.Target == Target.Texture3D && lhsSize.Depth != rhsSize.Depth)
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{
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result = TextureViewCompatibility.CopyOnly;
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}
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// Some APIs align the width for copy and render target textures,
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// so the width may not match in this case for different uses of the same texture.
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// To account for this, we compare the aligned width here.
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// We expect height to always match exactly, if the texture is the same.
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if (alignedWidthMatches && lhsSize.Height == rhsSize.Height)
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{
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return (exact && lhsSize.Width != rhsSize.Width) || lhsSize.Width < rhsSize.Width
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? TextureViewCompatibility.CopyOnly
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: result;
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}
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else if (lhs.IsLinear && rhs.IsLinear && lhsSize.Height == rhsSize.Height)
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{
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// Copy between linear textures with matching stride.
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int stride = BitUtils.AlignUp(Math.Max(1, lhs.Stride >> level), Constants.StrideAlignment);
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return stride == rhs.Stride ? TextureViewCompatibility.CopyOnly : TextureViewCompatibility.LayoutIncompatible;
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}
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else
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{
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return TextureViewCompatibility.LayoutIncompatible;
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}
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}
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/// <summary>
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/// Checks if the potential child texture fits within the level and layer bounds of the parent.
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/// </summary>
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/// <param name="parent">Texture information for the parent</param>
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/// <param name="child">Texture information for the child</param>
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/// <param name="layer">Base layer of the child texture</param>
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/// <param name="level">Base level of the child texture</param>
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/// <returns>Full compatiblity if the child's layer and level count fit within the parent, incompatible otherwise</returns>
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public static TextureViewCompatibility ViewSubImagesInBounds(TextureInfo parent, TextureInfo child, int layer, int level)
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{
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if (level + child.Levels <= parent.Levels &&
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layer + child.GetSlices() <= parent.GetSlices())
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{
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return TextureViewCompatibility.Full;
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}
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else
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{
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return TextureViewCompatibility.LayoutIncompatible;
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}
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}
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/// <summary>
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/// Checks if the texture sizes of the supplied texture informations match.
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/// </summary>
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/// <param name="lhs">Texture information to compare</param>
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/// <param name="rhs">Texture information to compare with</param>
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/// <param name="exact">Indicates if the size must be exactly equal between the textures, or if <paramref name="rhs"/> is allowed to be larger</param>
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/// <returns>True if the sizes matches, false otherwise</returns>
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public static bool SizeMatches(TextureInfo lhs, TextureInfo rhs, bool exact)
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{
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if (lhs.GetLayers() != rhs.GetLayers())
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{
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return false;
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}
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Size lhsSize = GetSizeInBlocks(lhs);
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Size rhsSize = GetSizeInBlocks(rhs);
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if (exact || lhs.IsLinear || rhs.IsLinear)
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{
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return lhsSize.Width == rhsSize.Width &&
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lhsSize.Height == rhsSize.Height &&
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lhsSize.Depth == rhsSize.Depth;
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}
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else
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{
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Size lhsAlignedSize = GetAlignedSize(lhs);
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Size rhsAlignedSize = GetAlignedSize(rhs);
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return lhsAlignedSize.Width == rhsAlignedSize.Width &&
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lhsSize.Width >= rhsSize.Width &&
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lhsSize.Height == rhsSize.Height &&
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lhsSize.Depth == rhsSize.Depth;
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}
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}
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/// <summary>
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/// Gets the aligned sizes for the given dimensions, using the specified texture information.
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/// The alignment depends on the texture layout and format bytes per pixel.
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/// </summary>
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/// <param name="info">Texture information to calculate the aligned size from</param>
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/// <param name="width">The width to be aligned</param>
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/// <param name="height">The height to be aligned</param>
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/// <param name="depth">The depth to be aligned</param>
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/// <returns>The aligned texture size</returns>
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private static Size GetAlignedSize(TextureInfo info, int width, int height, int depth)
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{
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if (info.IsLinear)
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{
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return SizeCalculator.GetLinearAlignedSize(
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width,
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height,
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info.FormatInfo.BlockWidth,
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info.FormatInfo.BlockHeight,
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info.FormatInfo.BytesPerPixel);
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}
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else
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{
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return SizeCalculator.GetBlockLinearAlignedSize(
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width,
|
|
height,
|
|
depth,
|
|
info.FormatInfo.BlockWidth,
|
|
info.FormatInfo.BlockHeight,
|
|
info.FormatInfo.BytesPerPixel,
|
|
info.GobBlocksInY,
|
|
info.GobBlocksInZ,
|
|
info.GobBlocksInTileX);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the aligned sizes of the specified texture information.
|
|
/// The alignment depends on the texture layout and format bytes per pixel.
|
|
/// </summary>
|
|
/// <param name="info">Texture information to calculate the aligned size from</param>
|
|
/// <param name="level">Mipmap level for texture views</param>
|
|
/// <returns>The aligned texture size</returns>
|
|
public static Size GetAlignedSize(TextureInfo info, int level = 0)
|
|
{
|
|
int width = Math.Max(1, info.Width >> level);
|
|
int height = Math.Max(1, info.Height >> level);
|
|
int depth = Math.Max(1, info.GetDepth() >> level);
|
|
|
|
return GetAlignedSize(info, width, height, depth);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the size in blocks for the given texture information.
|
|
/// For non-compressed formats, that's the same as the regular size.
|
|
/// </summary>
|
|
/// <param name="info">Texture information to calculate the aligned size from</param>
|
|
/// <param name="level">Mipmap level for texture views</param>
|
|
/// <returns>The texture size in blocks</returns>
|
|
public static Size GetSizeInBlocks(TextureInfo info, int level = 0)
|
|
{
|
|
int width = Math.Max(1, info.Width >> level);
|
|
int height = Math.Max(1, info.Height >> level);
|
|
int depth = Math.Max(1, info.GetDepth() >> level);
|
|
|
|
return new Size(
|
|
BitUtils.DivRoundUp(width, info.FormatInfo.BlockWidth),
|
|
BitUtils.DivRoundUp(height, info.FormatInfo.BlockHeight),
|
|
depth);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if it's possible to create a view with the layout of the second texture information from the first.
|
|
/// The layout information is composed of the Stride for linear textures, or GOB block size
|
|
/// for block linear textures.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information of the texture view</param>
|
|
/// <param name="rhs">Texture information of the texture view to compare against</param>
|
|
/// <param name="level">Start level of the texture view, in relation with the first texture</param>
|
|
/// <returns>True if the layout is compatible, false otherwise</returns>
|
|
public static bool ViewLayoutCompatible(TextureInfo lhs, TextureInfo rhs, int level)
|
|
{
|
|
if (lhs.IsLinear != rhs.IsLinear)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// For linear textures, gob block sizes are ignored.
|
|
// For block linear textures, the stride is ignored.
|
|
if (rhs.IsLinear)
|
|
{
|
|
int stride = Math.Max(1, lhs.Stride >> level);
|
|
stride = BitUtils.AlignUp(stride, Constants.StrideAlignment);
|
|
|
|
return stride == rhs.Stride;
|
|
}
|
|
else
|
|
{
|
|
int height = Math.Max(1, lhs.Height >> level);
|
|
int depth = Math.Max(1, lhs.GetDepth() >> level);
|
|
|
|
(int gobBlocksInY, int gobBlocksInZ) = SizeCalculator.GetMipGobBlockSizes(
|
|
height,
|
|
depth,
|
|
lhs.FormatInfo.BlockHeight,
|
|
lhs.GobBlocksInY,
|
|
lhs.GobBlocksInZ);
|
|
|
|
return gobBlocksInY == rhs.GobBlocksInY &&
|
|
gobBlocksInZ == rhs.GobBlocksInZ;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if it's possible to create a view with the layout of the second texture information from the first.
|
|
/// The layout information is composed of the Stride for linear textures, or GOB block size
|
|
/// for block linear textures.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information of the texture view</param>
|
|
/// <param name="rhs">Texture information of the texture view to compare against</param>
|
|
/// <param name="lhsLevel">Start level of the texture view, in relation with the first texture</param>
|
|
/// <param name="rhsLevel">Start level of the texture view, in relation with the second texture</param>
|
|
/// <returns>True if the layout is compatible, false otherwise</returns>
|
|
public static bool ViewLayoutCompatible(TextureInfo lhs, TextureInfo rhs, int lhsLevel, int rhsLevel)
|
|
{
|
|
if (lhs.IsLinear != rhs.IsLinear)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// For linear textures, gob block sizes are ignored.
|
|
// For block linear textures, the stride is ignored.
|
|
if (rhs.IsLinear)
|
|
{
|
|
int lhsStride = Math.Max(1, lhs.Stride >> lhsLevel);
|
|
lhsStride = BitUtils.AlignUp(lhsStride, Constants.StrideAlignment);
|
|
|
|
int rhsStride = Math.Max(1, rhs.Stride >> rhsLevel);
|
|
rhsStride = BitUtils.AlignUp(rhsStride, Constants.StrideAlignment);
|
|
|
|
return lhsStride == rhsStride;
|
|
}
|
|
else
|
|
{
|
|
int lhsHeight = Math.Max(1, lhs.Height >> lhsLevel);
|
|
int lhsDepth = Math.Max(1, lhs.GetDepth() >> lhsLevel);
|
|
|
|
(int lhsGobBlocksInY, int lhsGobBlocksInZ) = SizeCalculator.GetMipGobBlockSizes(
|
|
lhsHeight,
|
|
lhsDepth,
|
|
lhs.FormatInfo.BlockHeight,
|
|
lhs.GobBlocksInY,
|
|
lhs.GobBlocksInZ);
|
|
|
|
int rhsHeight = Math.Max(1, rhs.Height >> rhsLevel);
|
|
int rhsDepth = Math.Max(1, rhs.GetDepth() >> rhsLevel);
|
|
|
|
(int rhsGobBlocksInY, int rhsGobBlocksInZ) = SizeCalculator.GetMipGobBlockSizes(
|
|
rhsHeight,
|
|
rhsDepth,
|
|
rhs.FormatInfo.BlockHeight,
|
|
rhs.GobBlocksInY,
|
|
rhs.GobBlocksInZ);
|
|
|
|
return lhsGobBlocksInY == rhsGobBlocksInY &&
|
|
lhsGobBlocksInZ == rhsGobBlocksInZ;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if the view format of the first texture format is compatible with the format of the second.
|
|
/// In general, the formats are considered compatible if the bytes per pixel values are equal,
|
|
/// but there are more complex rules for some formats, like compressed or depth-stencil formats.
|
|
/// This follows the host API copy compatibility rules.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information of the texture view</param>
|
|
/// <param name="rhs">Texture information of the texture view</param>
|
|
/// <param name="caps">Host GPU capabilities</param>
|
|
/// <returns>The view compatibility level of the texture formats</returns>
|
|
public static TextureViewCompatibility ViewFormatCompatible(TextureInfo lhs, TextureInfo rhs, Capabilities caps)
|
|
{
|
|
FormatInfo lhsFormat = lhs.FormatInfo;
|
|
FormatInfo rhsFormat = rhs.FormatInfo;
|
|
|
|
if (lhsFormat.Format.IsDepthOrStencil() || rhsFormat.Format.IsDepthOrStencil())
|
|
{
|
|
return lhsFormat.Format == rhsFormat.Format ? TextureViewCompatibility.Full : TextureViewCompatibility.Incompatible;
|
|
}
|
|
|
|
if (IsFormatHostIncompatible(lhs, caps) || IsFormatHostIncompatible(rhs, caps))
|
|
{
|
|
return lhsFormat.Format == rhsFormat.Format ? TextureViewCompatibility.Full : TextureViewCompatibility.Incompatible;
|
|
}
|
|
|
|
if (lhsFormat.IsCompressed && rhsFormat.IsCompressed)
|
|
{
|
|
FormatClass lhsClass = GetFormatClass(lhsFormat.Format);
|
|
FormatClass rhsClass = GetFormatClass(rhsFormat.Format);
|
|
|
|
return lhsClass == rhsClass ? TextureViewCompatibility.Full : TextureViewCompatibility.Incompatible;
|
|
}
|
|
else if (lhsFormat.BytesPerPixel == rhsFormat.BytesPerPixel)
|
|
{
|
|
return lhs.FormatInfo.IsCompressed == rhs.FormatInfo.IsCompressed
|
|
? TextureViewCompatibility.Full
|
|
: TextureViewCompatibility.CopyOnly;
|
|
}
|
|
else if (IsIncompatibleFormatAliasingAllowed(lhsFormat, rhsFormat))
|
|
{
|
|
return TextureViewCompatibility.CopyOnly;
|
|
}
|
|
|
|
return TextureViewCompatibility.Incompatible;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if aliasing of two formats that would normally be considered incompatible be allowed,
|
|
/// using copy dependencies.
|
|
/// </summary>
|
|
/// <param name="lhsFormat">Format information of the first texture</param
|
|
/// <param name="rhsFormat">Format information of the second texture</param>
|
|
/// <returns>True if aliasing should be allowed, false otherwise</returns>
|
|
private static bool IsIncompatibleFormatAliasingAllowed(FormatInfo lhsFormat, FormatInfo rhsFormat)
|
|
{
|
|
// Some games will try to alias textures with incompatible foramts, with different BPP (bytes per pixel).
|
|
// We allow that in some cases as long Width * BPP is equal on both textures.
|
|
// This is very conservative right now as we want to avoid copies as much as possible,
|
|
// so we only consider the formats we have seen being aliased.
|
|
|
|
if (rhsFormat.BytesPerPixel < lhsFormat.BytesPerPixel)
|
|
{
|
|
(lhsFormat, rhsFormat) = (rhsFormat, lhsFormat);
|
|
}
|
|
|
|
return lhsFormat.Format == Format.R8Unorm && rhsFormat.Format == Format.R8G8B8A8Unorm;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if the target of the first texture view information is compatible with the target of the second texture view information.
|
|
/// This follows the host API target compatibility rules.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information of the texture view</param
|
|
/// <param name="rhs">Texture information of the texture view</param>
|
|
/// <param name="caps">Host GPU capabilities</param>
|
|
/// <returns>True if the targets are compatible, false otherwise</returns>
|
|
public static TextureViewCompatibility ViewTargetCompatible(TextureInfo lhs, TextureInfo rhs, ref Capabilities caps)
|
|
{
|
|
bool result = false;
|
|
switch (lhs.Target)
|
|
{
|
|
case Target.Texture1D:
|
|
case Target.Texture1DArray:
|
|
result = rhs.Target == Target.Texture1D ||
|
|
rhs.Target == Target.Texture1DArray;
|
|
break;
|
|
|
|
case Target.Texture2D:
|
|
result = rhs.Target == Target.Texture2D ||
|
|
rhs.Target == Target.Texture2DArray;
|
|
break;
|
|
|
|
case Target.Texture2DArray:
|
|
result = rhs.Target == Target.Texture2D ||
|
|
rhs.Target == Target.Texture2DArray;
|
|
|
|
if (rhs.Target == Target.Cubemap || rhs.Target == Target.CubemapArray)
|
|
{
|
|
return caps.SupportsCubemapView ? TextureViewCompatibility.Full : TextureViewCompatibility.CopyOnly;
|
|
}
|
|
break;
|
|
case Target.Cubemap:
|
|
case Target.CubemapArray:
|
|
result = rhs.Target == Target.Cubemap ||
|
|
rhs.Target == Target.CubemapArray;
|
|
|
|
if (rhs.Target == Target.Texture2D || rhs.Target == Target.Texture2DArray)
|
|
{
|
|
return caps.SupportsCubemapView ? TextureViewCompatibility.Full : TextureViewCompatibility.CopyOnly;
|
|
}
|
|
break;
|
|
case Target.Texture2DMultisample:
|
|
case Target.Texture2DMultisampleArray:
|
|
// We don't support copy between multisample and non-multisample depth-stencil textures
|
|
// because there's no way to emulate that since most GPUs don't support writing a
|
|
// custom stencil value into the texture, among several other API limitations.
|
|
|
|
if ((rhs.Target == Target.Texture2D || rhs.Target == Target.Texture2DArray) &&
|
|
!rhs.FormatInfo.Format.IsDepthOrStencil())
|
|
{
|
|
return TextureViewCompatibility.CopyOnly;
|
|
}
|
|
|
|
result = rhs.Target == Target.Texture2DMultisample ||
|
|
rhs.Target == Target.Texture2DMultisampleArray;
|
|
break;
|
|
|
|
case Target.Texture3D:
|
|
if (rhs.Target == Target.Texture2D)
|
|
{
|
|
return TextureViewCompatibility.CopyOnly;
|
|
}
|
|
|
|
result = rhs.Target == Target.Texture3D;
|
|
break;
|
|
}
|
|
|
|
return result ? TextureViewCompatibility.Full : TextureViewCompatibility.Incompatible;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if a swizzle component in two textures functionally match, taking into account if the components are defined.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information to compare</param>
|
|
/// <param name="rhs">Texture information to compare with</param>
|
|
/// <param name="swizzleLhs">Swizzle component for the first texture</param>
|
|
/// <param name="swizzleRhs">Swizzle component for the second texture</param>
|
|
/// <param name="component">Component index, starting at 0 for red</param>
|
|
/// <returns>True if the swizzle components functionally match, false othersize</returns>
|
|
private static bool SwizzleComponentMatches(TextureInfo lhs, TextureInfo rhs, SwizzleComponent swizzleLhs, SwizzleComponent swizzleRhs, int component)
|
|
{
|
|
int lhsComponents = lhs.FormatInfo.Components;
|
|
int rhsComponents = rhs.FormatInfo.Components;
|
|
|
|
if (lhsComponents == 4 && rhsComponents == 4)
|
|
{
|
|
return swizzleLhs == swizzleRhs;
|
|
}
|
|
|
|
// Swizzles after the number of components a format defines are "undefined".
|
|
// We allow these to not be equal under certain circumstances.
|
|
// This can only happen when there are less than 4 components in a format.
|
|
// It tends to happen when float depth textures are sampled.
|
|
|
|
bool lhsDefined = (swizzleLhs - SwizzleComponent.Red) < lhsComponents;
|
|
bool rhsDefined = (swizzleRhs - SwizzleComponent.Red) < rhsComponents;
|
|
|
|
if (lhsDefined == rhsDefined)
|
|
{
|
|
// If both are undefined, return true. Otherwise just check if they're equal.
|
|
return lhsDefined ? swizzleLhs == swizzleRhs : true;
|
|
}
|
|
else
|
|
{
|
|
SwizzleComponent defined = lhsDefined ? swizzleLhs : swizzleRhs;
|
|
SwizzleComponent undefined = lhsDefined ? swizzleRhs : swizzleLhs;
|
|
|
|
// Undefined swizzle can be matched by a forced value (0, 1), exact equality, or expected value.
|
|
// For example, R___ matches R001, RGBA but not RBGA.
|
|
return defined == undefined || defined < SwizzleComponent.Red || defined == SwizzleComponent.Red + component;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if the texture shader sampling parameters of two texture informations match.
|
|
/// </summary>
|
|
/// <param name="lhs">Texture information to compare</param>
|
|
/// <param name="rhs">Texture information to compare with</param>
|
|
/// <returns>True if the texture shader sampling parameters matches, false otherwise</returns>
|
|
public static bool SamplerParamsMatches(TextureInfo lhs, TextureInfo rhs)
|
|
{
|
|
return lhs.DepthStencilMode == rhs.DepthStencilMode &&
|
|
SwizzleComponentMatches(lhs, rhs, lhs.SwizzleR, rhs.SwizzleR, 0) &&
|
|
SwizzleComponentMatches(lhs, rhs, lhs.SwizzleG, rhs.SwizzleG, 1) &&
|
|
SwizzleComponentMatches(lhs, rhs, lhs.SwizzleB, rhs.SwizzleB, 2) &&
|
|
SwizzleComponentMatches(lhs, rhs, lhs.SwizzleA, rhs.SwizzleA, 3);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if the texture target and samples count (for multisampled textures) matches.
|
|
/// </summary>
|
|
/// <param name="first">Texture information to compare with</param>
|
|
/// <param name="rhs">Texture information to compare with</param>
|
|
/// <returns>True if the texture target and samples count matches, false otherwise</returns>
|
|
public static bool TargetAndSamplesCompatible(TextureInfo lhs, TextureInfo rhs)
|
|
{
|
|
return lhs.Target == rhs.Target &&
|
|
lhs.SamplesInX == rhs.SamplesInX &&
|
|
lhs.SamplesInY == rhs.SamplesInY;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the texture format class, for compressed textures, or Unclassified otherwise.
|
|
/// </summary>
|
|
/// <param name="format">The format</param>
|
|
/// <returns>Format class</returns>
|
|
private static FormatClass GetFormatClass(Format format)
|
|
{
|
|
switch (format)
|
|
{
|
|
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;
|
|
case Format.Etc2RgbSrgb:
|
|
case Format.Etc2RgbUnorm:
|
|
return FormatClass.Etc2Rgb;
|
|
case Format.Etc2RgbaSrgb:
|
|
case Format.Etc2RgbaUnorm:
|
|
return FormatClass.Etc2Rgba;
|
|
case Format.Astc4x4Srgb:
|
|
case Format.Astc4x4Unorm:
|
|
return FormatClass.Astc4x4;
|
|
case Format.Astc5x4Srgb:
|
|
case Format.Astc5x4Unorm:
|
|
return FormatClass.Astc5x4;
|
|
case Format.Astc5x5Srgb:
|
|
case Format.Astc5x5Unorm:
|
|
return FormatClass.Astc5x5;
|
|
case Format.Astc6x5Srgb:
|
|
case Format.Astc6x5Unorm:
|
|
return FormatClass.Astc6x5;
|
|
case Format.Astc6x6Srgb:
|
|
case Format.Astc6x6Unorm:
|
|
return FormatClass.Astc6x6;
|
|
case Format.Astc8x5Srgb:
|
|
case Format.Astc8x5Unorm:
|
|
return FormatClass.Astc8x5;
|
|
case Format.Astc8x6Srgb:
|
|
case Format.Astc8x6Unorm:
|
|
return FormatClass.Astc8x6;
|
|
case Format.Astc8x8Srgb:
|
|
case Format.Astc8x8Unorm:
|
|
return FormatClass.Astc8x8;
|
|
case Format.Astc10x5Srgb:
|
|
case Format.Astc10x5Unorm:
|
|
return FormatClass.Astc10x5;
|
|
case Format.Astc10x6Srgb:
|
|
case Format.Astc10x6Unorm:
|
|
return FormatClass.Astc10x6;
|
|
case Format.Astc10x8Srgb:
|
|
case Format.Astc10x8Unorm:
|
|
return FormatClass.Astc10x8;
|
|
case Format.Astc10x10Srgb:
|
|
case Format.Astc10x10Unorm:
|
|
return FormatClass.Astc10x10;
|
|
case Format.Astc12x10Srgb:
|
|
case Format.Astc12x10Unorm:
|
|
return FormatClass.Astc12x10;
|
|
case Format.Astc12x12Srgb:
|
|
case Format.Astc12x12Unorm:
|
|
return FormatClass.Astc12x12;
|
|
}
|
|
|
|
return FormatClass.Unclassified;
|
|
}
|
|
}
|
|
} |