Ryujinx/Ryujinx.Graphics.Texture/LayoutConverter.cs

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C#
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using Ryujinx.Common;
using System;
using static Ryujinx.Graphics.Texture.BlockLinearConstants;
namespace Ryujinx.Graphics.Texture
{
public static class LayoutConverter
{
private const int HostStrideAlignment = 4;
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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)
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{
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;
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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 alignment = gobWidth;
if (d < gobBlocksInZ || w <= gobWidth || h <= gobHeight)
{
alignment = GobStride / bytesPerPixel;
}
int wAligned = BitUtils.AlignUp(w, alignment);
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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++)
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{
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;
}
public static Span<byte> ConvertLinearStridedToLinear(
int width,
int height,
int blockWidth,
int blockHeight,
int stride,
int bytesPerPixel,
ReadOnlySpan<byte> data)
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{
int w = BitUtils.DivRoundUp(width, blockWidth);
int h = BitUtils.DivRoundUp(height, blockHeight);
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int outStride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
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Span<byte> output = new byte[h * outStride];
int outOffs = 0;
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for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int offset = y * stride + x * bytesPerPixel;
Span<byte> dest = output.Slice(outOffs + x * bytesPerPixel, bytesPerPixel);
data.Slice(offset, bytesPerPixel).CopyTo(dest);
}
outOffs += outStride;
}
return output;
}
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> ConvertLinearToLinearStrided(
int width,
int height,
int blockWidth,
int blockHeight,
int stride,
int bytesPerPixel,
ReadOnlySpan<byte> data)
{
int w = BitUtils.DivRoundUp(width, blockWidth);
int h = BitUtils.DivRoundUp(height, blockHeight);
int inStride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
Span<byte> output = new byte[h * stride];
int inOffs = 0;
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int offset = y * stride + x * bytesPerPixel;
Span<byte> dest = output.Slice(offset, bytesPerPixel);
data.Slice(inOffs + x * bytesPerPixel, bytesPerPixel).CopyTo(dest);
}
inOffs += inStride;
}
return output;
}
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private static int GetTextureSize(
int width,
int height,
int depth,
int levels,
int layers,
int blockWidth,
int blockHeight,
int bytesPerPixel)
{
int layerSize = 0;
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);
int stride = BitUtils.AlignUp(w * bytesPerPixel, HostStrideAlignment);
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layerSize += stride * h * d;
}
return layerSize * layers;
}
}
}