public static Span <byte> ConvertLinearToBlockLinear(
int width,
int height,
int depth,
int levels,
int layers,
int blockWidth,
int blockHeight,
int bytesPerPixel,
int gobBlocksInY,
int gobBlocksInZ,
int gobBlocksInTileX,
SizeInfo sizeInfo,
ReadOnlySpan <byte> data)
{
Span <byte> output = new byte[sizeInfo.TotalSize];
int inOffs = 0;
int mipGobBlocksInY = gobBlocksInY;
int mipGobBlocksInZ = gobBlocksInZ;
int gobWidth = (GobStride / bytesPerPixel) * gobBlocksInTileX;
int gobHeight = gobBlocksInY * GobHeight;
for (int level = 0; level < levels; level++)
{
int w = Math.Max(1, width >> level);
int h = Math.Max(1, height >> level);
int d = Math.Max(1, depth >> level);
w = BitUtils.DivRoundUp(w, blockWidth);
h = BitUtils.DivRoundUp(h, blockHeight);
while (h <= (mipGobBlocksInY >> 1) * GobHeight && mipGobBlocksInY != 1)
{
mipGobBlocksInY >>= 1;
}
while (d <= (mipGobBlocksInZ >> 1) && mipGobBlocksInZ != 1)
{
mipGobBlocksInZ >>= 1;
}
int stride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
int alignment = gobWidth;
if (d < gobBlocksInZ || w <= gobWidth || h <= gobHeight)
{
alignment = GobStride / bytesPerPixel;
}
int wAligned = BitUtils.AlignUp(w, alignment);
BlockLinearLayout layoutConverter = new BlockLinearLayout(
wAligned,
h,
d,
mipGobBlocksInY,
mipGobBlocksInZ,
bytesPerPixel);
for (int layer = 0; layer < layers; layer++)
{
int outBaseOffset = layer * sizeInfo.LayerSize + sizeInfo.GetMipOffset(level);
for (int z = 0; z < d; z++)
{
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int offset = outBaseOffset + layoutConverter.GetOffset(x, y, z);
Span <byte> dest = output.Slice(offset, bytesPerPixel);
data.Slice(inOffs + x * bytesPerPixel, bytesPerPixel).CopyTo(dest);
}
inOffs += stride;
}
}
}
}
return(output);
}
public static Span <byte> ConvertBlockLinearToLinear(
int width,
int height,
int depth,
int levels,
int layers,
int blockWidth,
int blockHeight,
int bytesPerPixel,
int gobBlocksInY,
int gobBlocksInZ,
int gobBlocksInTileX,
SizeInfo sizeInfo,
ReadOnlySpan <byte> data)
{
int outSize = GetTextureSize(
width,
height,
depth,
levels,
layers,
blockWidth,
blockHeight,
bytesPerPixel);
Span <byte> output = new byte[outSize];
int outOffs = 0;
int mipGobBlocksInY = gobBlocksInY;
int mipGobBlocksInZ = gobBlocksInZ;
int gobWidth = (GobStride / bytesPerPixel) * gobBlocksInTileX;
int gobHeight = gobBlocksInY * GobHeight;
for (int level = 0; level < levels; level++)
{
int w = Math.Max(1, width >> level);
int h = Math.Max(1, height >> level);
int d = Math.Max(1, depth >> level);
w = BitUtils.DivRoundUp(w, blockWidth);
h = BitUtils.DivRoundUp(h, blockHeight);
while (h <= (mipGobBlocksInY >> 1) * GobHeight && mipGobBlocksInY != 1)
{
mipGobBlocksInY >>= 1;
}
while (d <= (mipGobBlocksInZ >> 1) && mipGobBlocksInZ != 1)
{
mipGobBlocksInZ >>= 1;
}
int strideTrunc = BitUtils.AlignDown(w * bytesPerPixel, 16);
int strideTrunc64 = BitUtils.AlignDown(w * bytesPerPixel, 64);
int xStart = strideTrunc / bytesPerPixel;
int stride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
int outStrideGap = stride - w * bytesPerPixel;
int alignment = gobWidth;
if (d < gobBlocksInZ || w <= gobWidth || h <= gobHeight)
{
alignment = GobStride / bytesPerPixel;
}
int wAligned = BitUtils.AlignUp(w, alignment);
BlockLinearLayout layoutConverter = new BlockLinearLayout(
wAligned,
h,
mipGobBlocksInY,
mipGobBlocksInZ,
bytesPerPixel);
unsafe bool Convert <T>(Span <byte> output, ReadOnlySpan <byte> data) where T : unmanaged
{
fixed(byte *outputPtr = output, dataPtr = data)
{
byte *outPtr = outputPtr + outOffs;
for (int layer = 0; layer < layers; layer++)
{
byte *inBaseOffset = dataPtr + (layer * sizeInfo.LayerSize + sizeInfo.GetMipOffset(level));
for (int z = 0; z < d; z++)
{
layoutConverter.SetZ(z);
for (int y = 0; y < h; y++)
{
layoutConverter.SetY(y);
for (int x = 0; x < strideTrunc64; x += 64, outPtr += 64)
{
byte *offset = inBaseOffset + layoutConverter.GetOffsetWithLineOffset64(x);
byte *offset2 = offset + 0x20;
byte *offset3 = offset + 0x100;
byte *offset4 = offset + 0x120;
Vector128 <byte> value = *(Vector128 <byte> *)offset;
Vector128 <byte> value2 = *(Vector128 <byte> *)offset2;
Vector128 <byte> value3 = *(Vector128 <byte> *)offset3;
Vector128 <byte> value4 = *(Vector128 <byte> *)offset4;
*(Vector128 <byte> *)outPtr = value;
*(Vector128 <byte> *)(outPtr + 16) = value2;
*(Vector128 <byte> *)(outPtr + 32) = value3;
*(Vector128 <byte> *)(outPtr + 48) = value4;
}
for (int x = strideTrunc64; x < strideTrunc; x += 16, outPtr += 16)
{
byte *offset = inBaseOffset + layoutConverter.GetOffsetWithLineOffset16(x);
*(Vector128 <byte> *)outPtr = *(Vector128 <byte> *)offset;
}
for (int x = xStart; x < w; x++, outPtr += bytesPerPixel)
{
byte *offset = inBaseOffset + layoutConverter.GetOffset(x);
*(T *)outPtr = *(T *)offset;
}
outPtr += outStrideGap;
}
}
}
outOffs += stride * h * d * layers;
}
return(true);
}
bool _ = bytesPerPixel switch
{
1 => Convert <byte>(output, data),
2 => Convert <ushort>(output, data),
4 => Convert <uint>(output, data),
8 => Convert <ulong>(output, data),
12 => Convert <Bpp12Pixel>(output, data),
16 => Convert <Vector128 <byte> >(output, data),
_ => throw new NotSupportedException($"Unable to convert ${bytesPerPixel} bpp pixel format.")
};
}
return(output);
}
public static Span <byte> ConvertBlockLinearToLinear(
int width,
int height,
int depth,
int levels,
int layers,
int blockWidth,
int blockHeight,
int bytesPerPixel,
int gobBlocksInY,
int gobBlocksInZ,
int gobBlocksInTileX,
SizeInfo sizeInfo,
ReadOnlySpan <byte> data)
{
int outSize = GetTextureSize(
width,
height,
depth,
levels,
layers,
blockWidth,
blockHeight,
bytesPerPixel);
Span <byte> output = new byte[outSize];
int outOffs = 0;
int wAlignment = gobBlocksInTileX * (GobStride / bytesPerPixel);
int mipGobBlocksInY = gobBlocksInY;
int mipGobBlocksInZ = gobBlocksInZ;
for (int level = 0; level < levels; level++)
{
int w = Math.Max(1, width >> level);
int h = Math.Max(1, height >> level);
int d = Math.Max(1, depth >> level);
w = BitUtils.DivRoundUp(w, blockWidth);
h = BitUtils.DivRoundUp(h, blockHeight);
while (h <= (mipGobBlocksInY >> 1) * GobHeight && mipGobBlocksInY != 1)
{
mipGobBlocksInY >>= 1;
}
while (d <= (mipGobBlocksInZ >> 1) && mipGobBlocksInZ != 1)
{
mipGobBlocksInZ >>= 1;
}
int strideTrunc = BitUtils.AlignDown(w * bytesPerPixel, 16);
int xStart = strideTrunc / bytesPerPixel;
int stride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
int wAligned = BitUtils.AlignUp(w, wAlignment);
BlockLinearLayout layoutConverter = new BlockLinearLayout(
wAligned,
h,
d,
mipGobBlocksInY,
mipGobBlocksInZ,
bytesPerPixel);
for (int layer = 0; layer < layers; layer++)
{
int inBaseOffset = layer * sizeInfo.LayerSize + sizeInfo.GetMipOffset(level);
for (int z = 0; z < d; z++)
{
for (int y = 0; y < h; y++)
{
for (int x = 0; x < strideTrunc; x += 16)
{
int offset = inBaseOffset + layoutConverter.GetOffsetWithLineOffset(x, y, z);
Span <byte> dest = output.Slice(outOffs + x, 16);
data.Slice(offset, 16).CopyTo(dest);
}
for (int x = xStart; x < w; x++)
{
int offset = inBaseOffset + layoutConverter.GetOffset(x, y, z);
Span <byte> dest = output.Slice(outOffs + x * bytesPerPixel, bytesPerPixel);
data.Slice(offset, bytesPerPixel).CopyTo(dest);
}
outOffs += stride;
}
}
}
}
return(output);
}
