/// <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 width = Math.Max(1, lhs.Width >> level);
int stride = width * lhs.FormatInfo.BytesPerPixel;
stride = BitUtils.AlignUp(stride, 32);
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>
/// 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>
private static Size GetAlignedSize(TextureInfo info, int level = 0)
{
int width = Math.Max(1, info.Width >> level);
int height = Math.Max(1, info.Height >> level);
if (info.IsLinear)
{
return(SizeCalculator.GetLinearAlignedSize(
width,
height,
info.FormatInfo.BlockWidth,
info.FormatInfo.BlockHeight,
info.FormatInfo.BytesPerPixel));
}
else
{
int depth = Math.Max(1, info.GetDepth() >> level);
(int gobBlocksInY, int gobBlocksInZ) = SizeCalculator.GetMipGobBlockSizes(
height,
depth,
info.FormatInfo.BlockHeight,
info.GobBlocksInY,
info.GobBlocksInZ);
return(SizeCalculator.GetBlockLinearAlignedSize(
width,
height,
depth,
info.FormatInfo.BlockWidth,
info.FormatInfo.BlockHeight,
info.FormatInfo.BytesPerPixel,
gobBlocksInY,
gobBlocksInZ,
info.GobBlocksInTileX));
}
}
/// <summary>
/// Gets texture information from a texture descriptor.
/// </summary>
/// <param name="descriptor">The texture descriptor</param>
/// <param name="layerSize">Layer size for textures using a sub-range of mipmap levels, otherwise 0</param>
/// <returns>The texture information</returns>
private TextureInfo GetInfo(TextureDescriptor descriptor, out int layerSize)
{
int width = descriptor.UnpackWidth();
int height = descriptor.UnpackHeight();
int depthOrLayers = descriptor.UnpackDepth();
int levels = descriptor.UnpackLevels();
TextureMsaaMode msaaMode = descriptor.UnpackTextureMsaaMode();
int samplesInX = msaaMode.SamplesInX();
int samplesInY = msaaMode.SamplesInY();
int stride = descriptor.UnpackStride();
TextureDescriptorType descriptorType = descriptor.UnpackTextureDescriptorType();
bool isLinear = descriptorType == TextureDescriptorType.Linear;
Target target = descriptor.UnpackTextureTarget().Convert((samplesInX | samplesInY) != 1);
// We use 2D targets for 1D textures as that makes texture cache
// management easier. We don't know the target for render target
// and copies, so those would normally use 2D targets, which are
// not compatible with 1D targets. By doing that we also allow those
// to match when looking for compatible textures on the cache.
if (target == Target.Texture1D)
{
target = Target.Texture2D;
height = 1;
}
else if (target == Target.Texture1DArray)
{
target = Target.Texture2DArray;
height = 1;
}
uint format = descriptor.UnpackFormat();
bool srgb = descriptor.UnpackSrgb();
ulong gpuVa = descriptor.UnpackAddress();
if (!FormatTable.TryGetTextureFormat(format, srgb, out FormatInfo formatInfo))
{
if (Context.MemoryManager.IsMapped(gpuVa) && (int)format > 0)
{
Logger.Error?.Print(LogClass.Gpu, $"Invalid texture format 0x{format:X} (sRGB: {srgb}).");
}
formatInfo = FormatInfo.Default;
}
int gobBlocksInY = descriptor.UnpackGobBlocksInY();
int gobBlocksInZ = descriptor.UnpackGobBlocksInZ();
int gobBlocksInTileX = descriptor.UnpackGobBlocksInTileX();
layerSize = 0;
int minLod = descriptor.UnpackBaseLevel();
int maxLod = descriptor.UnpackMaxLevelInclusive();
// Linear textures don't support mipmaps, so we don't handle this case here.
if ((minLod != 0 || maxLod + 1 != levels) && target != Target.TextureBuffer && !isLinear)
{
int depth = TextureInfo.GetDepth(target, depthOrLayers);
int layers = TextureInfo.GetLayers(target, depthOrLayers);
SizeInfo sizeInfo = SizeCalculator.GetBlockLinearTextureSize(
width,
height,
depth,
levels,
layers,
formatInfo.BlockWidth,
formatInfo.BlockHeight,
formatInfo.BytesPerPixel,
gobBlocksInY,
gobBlocksInZ,
gobBlocksInTileX);
layerSize = sizeInfo.LayerSize;
if (minLod != 0 && minLod < levels)
{
// If the base level is not zero, we additionally add the mip level offset
// to the address, this allows the texture manager to find the base level from the
// address if there is a overlapping texture on the cache that can contain the new texture.
gpuVa += (ulong)sizeInfo.GetMipOffset(minLod);
width = Math.Max(1, width >> minLod);
height = Math.Max(1, height >> minLod);
if (target == Target.Texture3D)
{
depthOrLayers = Math.Max(1, depthOrLayers >> minLod);
}
(gobBlocksInY, gobBlocksInZ) = SizeCalculator.GetMipGobBlockSizes(height, depth, formatInfo.BlockHeight, gobBlocksInY, gobBlocksInZ);
}
levels = (maxLod - minLod) + 1;
}
SwizzleComponent swizzleR = descriptor.UnpackSwizzleR().Convert();
SwizzleComponent swizzleG = descriptor.UnpackSwizzleG().Convert();
SwizzleComponent swizzleB = descriptor.UnpackSwizzleB().Convert();
SwizzleComponent swizzleA = descriptor.UnpackSwizzleA().Convert();
DepthStencilMode depthStencilMode = GetDepthStencilMode(
formatInfo.Format,
swizzleR,
swizzleG,
swizzleB,
swizzleA);
if (formatInfo.Format.IsDepthOrStencil())
{
swizzleR = SwizzleComponent.Red;
swizzleG = SwizzleComponent.Red;
swizzleB = SwizzleComponent.Red;
if (depthStencilMode == DepthStencilMode.Depth)
{
swizzleA = SwizzleComponent.One;
}
else
{
swizzleA = SwizzleComponent.Red;
}
}
return(new TextureInfo(
gpuVa,
width,
height,
depthOrLayers,
levels,
samplesInX,
samplesInY,
stride,
isLinear,
gobBlocksInY,
gobBlocksInZ,
gobBlocksInTileX,
target,
formatInfo,
depthStencilMode,
swizzleR,
swizzleG,
swizzleB,
swizzleA));
}