public void CopyUnscaled(
ITextureInfo src,
ITextureInfo dst,
int srcLayer,
int dstLayer,
int srcLevel,
int dstLevel)
{
TextureCreateInfo srcInfo = src.Info;
TextureCreateInfo dstInfo = dst.Info;
int srcDepth = srcInfo.GetDepthOrLayers();
int srcLevels = srcInfo.Levels;
int dstDepth = dstInfo.GetDepthOrLayers();
int dstLevels = dstInfo.Levels;
if (dstInfo.Target == Target.Texture3D)
{
dstDepth = Math.Max(1, dstDepth >> dstLevel);
}
int depth = Math.Min(srcDepth, dstDepth);
int levels = Math.Min(srcLevels, dstLevels);
CopyUnscaled(src, dst, srcLayer, dstLayer, srcLevel, dstLevel, depth, levels);
}
public void CopyUnscaled(
ITextureInfo src,
ITextureInfo dst,
int srcLayer,
int dstLayer,
int srcLevel,
int dstLevel,
int depth,
int levels)
{
TextureCreateInfo srcInfo = src.Info;
TextureCreateInfo dstInfo = dst.Info;
int srcHandle = src.Handle;
int dstHandle = dst.Handle;
int srcWidth = srcInfo.Width;
int srcHeight = srcInfo.Height;
int dstWidth = dstInfo.Width;
int dstHeight = dstInfo.Height;
srcWidth = Math.Max(1, srcWidth >> srcLevel);
srcHeight = Math.Max(1, srcHeight >> srcLevel);
dstWidth = Math.Max(1, dstWidth >> dstLevel);
dstHeight = Math.Max(1, dstHeight >> dstLevel);
int blockWidth = 1;
int blockHeight = 1;
bool sizeInBlocks = false;
// When copying from a compressed to a non-compressed format,
// the non-compressed texture will have the size of the texture
// in blocks (not in texels), so we must adjust that size to
// match the size in texels of the compressed texture.
if (!srcInfo.IsCompressed && dstInfo.IsCompressed)
{
srcWidth *= dstInfo.BlockWidth;
srcHeight *= dstInfo.BlockHeight;
blockWidth = dstInfo.BlockWidth;
blockHeight = dstInfo.BlockHeight;
sizeInBlocks = true;
}
else if (srcInfo.IsCompressed && !dstInfo.IsCompressed)
{
dstWidth *= srcInfo.BlockWidth;
dstHeight *= srcInfo.BlockHeight;
blockWidth = srcInfo.BlockWidth;
blockHeight = srcInfo.BlockHeight;
}
int width = Math.Min(srcWidth, dstWidth);
int height = Math.Min(srcHeight, dstHeight);
for (int level = 0; level < levels; level++)
{
// Stop copy if we are already out of the levels range.
if (level >= srcInfo.Levels || dstLevel + level >= dstInfo.Levels)
{
break;
}
if ((width % blockWidth != 0 || height % blockHeight != 0) && src is TextureView srcView && dst is TextureView dstView)
{
PboCopy(srcView, dstView, srcLayer, dstLayer, srcLevel + level, dstLevel + level, width, height);
}