diff options
| author | TSR Berry <20988865+TSRBerry@users.noreply.github.com> | 2023-04-08 01:22:00 +0200 |
|---|---|---|
| committer | Mary <thog@protonmail.com> | 2023-04-27 23:51:14 +0200 |
| commit | cee712105850ac3385cd0091a923438167433f9f (patch) | |
| tree | 4a5274b21d8b7f938c0d0ce18736d3f2993b11b1 /Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs | |
| parent | cd124bda587ef09668a971fa1cac1c3f0cfc9f21 (diff) | |
Move solution and projects to src
Diffstat (limited to 'Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs')
| -rw-r--r-- | Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs | 911 |
1 files changed, 0 insertions, 911 deletions
diff --git a/Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs b/Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs deleted file mode 100644 index e93ea0c0..00000000 --- a/Ryujinx.Graphics.Gpu/Image/TextureCompatibility.cs +++ /dev/null @@ -1,911 +0,0 @@ -using Ryujinx.Common; -using Ryujinx.Graphics.GAL; -using Ryujinx.Graphics.Texture; -using System; - -namespace Ryujinx.Graphics.Gpu.Image -{ - /// <summary> - /// Texture format compatibility checks. - /// </summary> - static class TextureCompatibility - { - private enum FormatClass - { - Unclassified, - Bc1Rgba, - Bc2, - Bc3, - Bc4, - Bc5, - Bc6, - Bc7, - Etc2Rgb, - Etc2Rgba, - Astc4x4, - Astc5x4, - Astc5x5, - Astc6x5, - Astc6x6, - Astc8x5, - Astc8x6, - Astc8x8, - Astc10x5, - Astc10x6, - Astc10x8, - Astc10x10, - Astc12x10, - Astc12x12 - } - - /// <summary> - /// Checks if a format is host incompatible. - /// </summary> - /// <remarks> - /// Host incompatible formats can't be used directly, the texture data needs to be converted - /// to a compatible format first. - /// </remarks> - /// <param name="info">Texture information</param> - /// <param name="caps">Host GPU capabilities</param> - /// <returns>True if the format is incompatible, false otherwise</returns> - public static bool IsFormatHostIncompatible(TextureInfo info, Capabilities caps) - { - Format originalFormat = info.FormatInfo.Format; - return ToHostCompatibleFormat(info, caps).Format != originalFormat; - } - - /// <summary> - /// Converts a incompatible format to a host compatible format, or return the format directly - /// if it is already host compatible. - /// </summary> - /// <remarks> - /// This can be used to convert a incompatible compressed format to the decompressor - /// output format. - /// </remarks> - /// <param name="info">Texture information</param> - /// <param name="caps">Host GPU capabilities</param> - /// <returns>A host compatible format</returns> - public static FormatInfo ToHostCompatibleFormat(TextureInfo info, Capabilities caps) - { - // The host API does not support those compressed formats. - // We assume software decompression will be done for those textures, - // and so we adjust the format here to match the decompressor output. - - if (!caps.SupportsAstcCompression) - { - if (info.FormatInfo.Format.IsAstcUnorm()) - { - return GraphicsConfig.EnableTextureRecompression - ? new FormatInfo(Format.Bc7Unorm, 4, 4, 16, 4) - : new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4); - } - else if (info.FormatInfo.Format.IsAstcSrgb()) - { - return GraphicsConfig.EnableTextureRecompression - ? new FormatInfo(Format.Bc7Srgb, 4, 4, 16, 4) - : new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4); - } - } - - if (!HostSupportsBcFormat(info.FormatInfo.Format, info.Target, caps)) - { - switch (info.FormatInfo.Format) - { - case Format.Bc1RgbaSrgb: - case Format.Bc2Srgb: - case Format.Bc3Srgb: - case Format.Bc7Srgb: - return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4); - case Format.Bc1RgbaUnorm: - case Format.Bc2Unorm: - case Format.Bc3Unorm: - case Format.Bc7Unorm: - return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4); - case Format.Bc4Unorm: - return new FormatInfo(Format.R8Unorm, 1, 1, 1, 1); - case Format.Bc4Snorm: - return new FormatInfo(Format.R8Snorm, 1, 1, 1, 1); - case Format.Bc5Unorm: - return new FormatInfo(Format.R8G8Unorm, 1, 1, 2, 2); - case Format.Bc5Snorm: - return new FormatInfo(Format.R8G8Snorm, 1, 1, 2, 2); - case Format.Bc6HSfloat: - case Format.Bc6HUfloat: - return new FormatInfo(Format.R16G16B16A16Float, 1, 1, 8, 4); - } - } - - if (!caps.SupportsEtc2Compression) - { - switch (info.FormatInfo.Format) - { - case Format.Etc2RgbaSrgb: - case Format.Etc2RgbPtaSrgb: - case Format.Etc2RgbSrgb: - return new FormatInfo(Format.R8G8B8A8Srgb, 1, 1, 4, 4); - case Format.Etc2RgbaUnorm: - case Format.Etc2RgbPtaUnorm: - case Format.Etc2RgbUnorm: - return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4); - } - } - - if (!caps.SupportsR4G4Format && info.FormatInfo.Format == Format.R4G4Unorm) - { - if (caps.SupportsR4G4B4A4Format) - { - return new FormatInfo(Format.R4G4B4A4Unorm, 1, 1, 2, 4); - } - else - { - return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4); - } - } - - if (info.FormatInfo.Format == Format.R4G4B4A4Unorm) - { - if (!caps.SupportsR4G4B4A4Format) - { - return new FormatInfo(Format.R8G8B8A8Unorm, 1, 1, 4, 4); - } - } - else if (!caps.Supports5BitComponentFormat && info.FormatInfo.Format.Is16BitPacked()) - { - return new FormatInfo(info.FormatInfo.Format.IsBgr() ? Format.B8G8R8A8Unorm : Format.R8G8B8A8Unorm, 1, 1, 4, 4); - } - - return info.FormatInfo; - } - - /// <summary> - /// Checks if the host API supports a given texture compression format of the BC family. - /// </summary> - /// <param name="format">BC format to be checked</param> - /// <param name="target">Target usage of the texture</param> - /// <param name="caps">Host GPU Capabilities</param> - /// <returns>True if the texture host supports the format with the given target usage, false otherwise</returns> - public static bool HostSupportsBcFormat(Format format, Target target, Capabilities caps) - { - bool not3DOr3DCompressionSupported = target != Target.Texture3D || caps.Supports3DTextureCompression; - - switch (format) - { - case Format.Bc1RgbaSrgb: - case Format.Bc1RgbaUnorm: - case Format.Bc2Srgb: - case Format.Bc2Unorm: - case Format.Bc3Srgb: - case Format.Bc3Unorm: - return caps.SupportsBc123Compression && not3DOr3DCompressionSupported; - case Format.Bc4Unorm: - case Format.Bc4Snorm: - case Format.Bc5Unorm: - case Format.Bc5Snorm: - return caps.SupportsBc45Compression && not3DOr3DCompressionSupported; - case Format.Bc6HSfloat: - case Format.Bc6HUfloat: - case Format.Bc7Srgb: - case Format.Bc7Unorm: - return caps.SupportsBc67Compression && not3DOr3DCompressionSupported; - } - - return true; - } - - /// <summary> - /// Determines whether a texture can flush its data back to guest memory. - /// </summary> - /// <param name="info">Texture information</param> - /// <param name="caps">Host GPU Capabilities</param> - /// <returns>True if the texture can flush, false otherwise</returns> - public static bool CanTextureFlush(TextureInfo info, Capabilities caps) - { - if (IsFormatHostIncompatible(info, caps)) - { - return false; // Flushing this format is not supported, as it may have been converted to another host format. - } - - if (info.Target == Target.Texture2DMultisample || - info.Target == Target.Texture2DMultisampleArray) - { - return false; // Flushing multisample textures is not supported, the host does not allow getting their data. - } - - return true; - } - - /// <summary> - /// Checks if the texture format matches with the specified texture information. - /// </summary> - /// <param name="lhs">Texture information to compare</param> - /// <param name="rhs">Texture information to compare with</param> - /// <param name="forSampler">Indicates that the texture will be used for shader sampling</param> - /// <param name="forCopy">Indicates that the texture will be used as copy source or target</param> - /// <returns>A value indicating how well the formats match</returns> - public static TextureMatchQuality FormatMatches(TextureInfo lhs, TextureInfo rhs, bool forSampler, bool forCopy) - { - // D32F and R32F texture have the same representation internally, - // however the R32F format is used to sample from depth textures. - if (lhs.FormatInfo.Format == Format.D32Float && rhs.FormatInfo.Format == Format.R32Float && (forSampler || forCopy)) - { - return TextureMatchQuality.FormatAlias; - } - - if (forCopy) - { - // The 2D engine does not support depth-stencil formats, so it will instead - // use equivalent color formats. We must also consider them as compatible. - if (lhs.FormatInfo.Format == Format.S8Uint && rhs.FormatInfo.Format == Format.R8Unorm) - { - return TextureMatchQuality.FormatAlias; - } - - if (lhs.FormatInfo.Format == Format.D16Unorm && rhs.FormatInfo.Format == Format.R16Unorm) - { - return TextureMatchQuality.FormatAlias; - } - - if ((lhs.FormatInfo.Format == Format.D24UnormS8Uint || - lhs.FormatInfo.Format == Format.S8UintD24Unorm) && rhs.FormatInfo.Format == Format.B8G8R8A8Unorm) - { - return TextureMatchQuality.FormatAlias; - } - } - - return lhs.FormatInfo.Format == rhs.FormatInfo.Format ? TextureMatchQuality.Perfect : TextureMatchQuality.NoMatch; - } - - /// <summary> - /// Checks if the texture layout specified matches with this texture layout. - /// 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 to compare</param> - /// <param name="rhs">Texture information to compare with</param> - /// <returns>True if the layout matches, false otherwise</returns> - public static bool LayoutMatches(TextureInfo lhs, TextureInfo rhs) - { - 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) - { - return lhs.Stride == rhs.Stride; - } - else - { - return lhs.GobBlocksInY == rhs.GobBlocksInY && - lhs.GobBlocksInZ == rhs.GobBlocksInZ; - } - } - - /// <summary> - /// Obtain the minimum compatibility level of two provided view compatibility results. - /// </summary> - /// <param name="first">The first compatibility level</param> - /// <param name="second">The second compatibility level</param> - /// <returns>The minimum compatibility level of two provided view compatibility results</returns> - public static TextureViewCompatibility PropagateViewCompatibility(TextureViewCompatibility first, TextureViewCompatibility second) - { - if (first == TextureViewCompatibility.Incompatible || second == TextureViewCompatibility.Incompatible) - { - return TextureViewCompatibility.Incompatible; - } - else if (first == TextureViewCompatibility.LayoutIncompatible || second == TextureViewCompatibility.LayoutIncompatible) - { - return TextureViewCompatibility.LayoutIncompatible; - } - else if (first == TextureViewCompatibility.CopyOnly || second == TextureViewCompatibility.CopyOnly) - { - return TextureViewCompatibility.CopyOnly; - } - else - { - return TextureViewCompatibility.Full; - } - } - - /// <summary> - /// Checks if the sizes of two texture levels are copy compatible. - /// </summary> - /// <param name="lhs">Texture information of the texture view</param> - /// <param name="rhs">Texture information of the texture view to match against</param> - /// <param name="lhsLevel">Mipmap level of the texture view in relation to this texture</param> - /// <param name="rhsLevel">Mipmap level of the texture view in relation to the second texture</param> - /// <returns>True if both levels are view compatible</returns> - public static bool CopySizeMatches(TextureInfo lhs, TextureInfo rhs, int lhsLevel, int rhsLevel) - { - Size size = GetAlignedSize(lhs, lhsLevel); - - Size otherSize = GetAlignedSize(rhs, rhsLevel); - - if (size.Width == otherSize.Width && size.Height == otherSize.Height) - { - return true; - } - else if (lhs.IsLinear && rhs.IsLinear) - { - // Copy between linear textures with matching stride. - int stride = BitUtils.AlignUp(Math.Max(1, lhs.Stride >> lhsLevel), Constants.StrideAlignment); - - return stride == rhs.Stride; - } - else - { - return false; - } - } - - /// <summary> - /// Checks if the sizes of two given textures are view compatible. - /// </summary> - /// <param name="lhs">Texture information of the texture view</param> - /// <param name="rhs">Texture information of the texture view to match against</param> - /// <param name="exact">Indicates if the sizes must be exactly equal</param> - /// <param name="level">Mipmap level of the texture view in relation to this texture</param> - /// <returns>The view compatibility level of the view sizes</returns> - public static TextureViewCompatibility ViewSizeMatches(TextureInfo lhs, TextureInfo rhs, bool exact, int level) - { - Size lhsAlignedSize = GetAlignedSize(lhs, level); - Size rhsAlignedSize = GetAlignedSize(rhs); - - Size lhsSize = GetSizeInBlocks(lhs, level); - Size rhsSize = GetSizeInBlocks(rhs); - - bool alignedWidthMatches = lhsAlignedSize.Width == rhsAlignedSize.Width; - - if (lhs.FormatInfo.BytesPerPixel != rhs.FormatInfo.BytesPerPixel && IsIncompatibleFormatAliasingAllowed(lhs.FormatInfo, rhs.FormatInfo)) - { - alignedWidthMatches = lhsSize.Width * lhs.FormatInfo.BytesPerPixel == rhsSize.Width * rhs.FormatInfo.BytesPerPixel; - } - - TextureViewCompatibility result = TextureViewCompatibility.Full; - - // For copies, we can copy a subset of the 3D texture slices, - // so the depth may be different in this case. - if (rhs.Target == Target.Texture3D && lhsSize.Depth != rhsSize.Depth) - { - result = TextureViewCompatibility.CopyOnly; - } - - // Some APIs align the width for copy and render target textures, - // so the width may not match in this case for different uses of the same texture. - // To account for this, we compare the aligned width here. - // We expect height to always match exactly, if the texture is the same. - if (alignedWidthMatches && lhsSize.Height == rhsSize.Height) - { - return (exact && lhsSize.Width != rhsSize.Width) || lhsSize.Width < rhsSize.Width - ? TextureViewCompatibility.CopyOnly - : result; - } - else if (lhs.IsLinear && rhs.IsLinear && lhsSize.Height == rhsSize.Height) - { - // Copy between linear textures with matching stride. - int stride = BitUtils.AlignUp(Math.Max(1, lhs.Stride >> level), Constants.StrideAlignment); - - return stride == rhs.Stride ? TextureViewCompatibility.CopyOnly : TextureViewCompatibility.LayoutIncompatible; - } - else - { - return TextureViewCompatibility.LayoutIncompatible; - } - } - - /// <summary> - /// Checks if the potential child texture fits within the level and layer bounds of the parent. - /// </summary> - /// <param name="parent">Texture information for the parent</param> - /// <param name="child">Texture information for the child</param> - /// <param name="layer">Base layer of the child texture</param> - /// <param name="level">Base level of the child texture</param> - /// <returns>Full compatiblity if the child's layer and level count fit within the parent, incompatible otherwise</returns> - public static TextureViewCompatibility ViewSubImagesInBounds(TextureInfo parent, TextureInfo child, int layer, int level) - { - if (level + child.Levels <= parent.Levels && - layer + child.GetSlices() <= parent.GetSlices()) - { - return TextureViewCompatibility.Full; - } - else - { - return TextureViewCompatibility.LayoutIncompatible; - } - } - - /// <summary> - /// Checks if the texture sizes of the supplied texture informations match. - /// </summary> - /// <param name="lhs">Texture information to compare</param> - /// <param name="rhs">Texture information to compare with</param> - /// <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> - /// <returns>True if the sizes matches, false otherwise</returns> - public static bool SizeMatches(TextureInfo lhs, TextureInfo rhs, bool exact) - { - if (lhs.GetLayers() != rhs.GetLayers()) - { - return false; - } - - Size lhsSize = GetSizeInBlocks(lhs); - Size rhsSize = GetSizeInBlocks(rhs); - - if (exact || lhs.IsLinear || rhs.IsLinear) - { - return lhsSize.Width == rhsSize.Width && - lhsSize.Height == rhsSize.Height && - lhsSize.Depth == rhsSize.Depth; - } - else - { - Size lhsAlignedSize = GetAlignedSize(lhs); - Size rhsAlignedSize = GetAlignedSize(rhs); - - return lhsAlignedSize.Width == rhsAlignedSize.Width && - lhsSize.Width >= rhsSize.Width && - lhsSize.Height == rhsSize.Height && - lhsSize.Depth == rhsSize.Depth; - } - } - - /// <summary> - /// Gets the aligned sizes for the given dimensions, using 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="width">The width to be aligned</param> - /// <param name="height">The height to be aligned</param> - /// <param name="depth">The depth to be aligned</param> - /// <returns>The aligned texture size</returns> - private static Size GetAlignedSize(TextureInfo info, int width, int height, int depth) - { - if (info.IsLinear) - { - return SizeCalculator.GetLinearAlignedSize( - width, - height, - info.FormatInfo.BlockWidth, - info.FormatInfo.BlockHeight, - info.FormatInfo.BytesPerPixel); - } - else - { - return SizeCalculator.GetBlockLinearAlignedSize( - 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: - if (rhs.Target == Target.Texture2D || rhs.Target == Target.Texture2DArray) - { - 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; - } - } -}
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