/// <summary>
/// ポインタから
/// </summary>
/// <param name="ptr"></param>
public TextureBuffer(IntPtr ptr)
{
ksTexHeader header = (ksTexHeader)Marshal.PtrToStructure(ptr, typeof(ksTexHeader));
int offset = Marshal.SizeOf(header);
ptr += offset;
// データをバイト配列にコピー
byte[] buffer = new byte[header.data_size];
Marshal.Copy(ptr, buffer, 0, header.data_size);
// バッファから初期化
shaderResourceView_ = ShaderResourceView.FromMemory(GraphicsCore.D3D11Device, buffer);
buffer_ = shaderResourceView_.Resource;
// 情報取得
var tex = (Texture2D)shaderResourceView_.Resource;
width_ = tex.Description.Width;
height_ = tex.Description.Height;
format_ = tex.Description.Format;
mips_ = tex.Description.MipLevels;
}
/// <summary>
/// ファイルから
/// </summary>
/// <param name="file_name"></param>
public TextureBuffer(string file_name)
{
using (var stream = new System.IO.FileStream(file_name, System.IO.FileMode.Open, FileAccess.Read)) {
byte[] data = new byte[stream.Length];
stream.Read(data, 0, (int)stream.Length);
MemoryStream s = new MemoryStream(data);
// 名前からDDSかを判別
string ext = Path.GetExtension(file_name).ToLower();
if (ext == ".kstex")
{
// ksTex
// byte配列からポインタを取得
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
IntPtr ptr = handle.AddrOfPinnedObject();
ksTexHeader header = (ksTexHeader)Marshal.PtrToStructure(ptr, typeof(ksTexHeader));
int offset = Marshal.SizeOf(header);
// ストリームの一をセットしてSRV生成
s.Position = offset;
shaderResourceView_ = ShaderResourceView.FromStream(GraphicsCore.D3D11Device, s, header.data_size);
handle.Free();
}
else if (ext == ".tga")
{
// tga
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
IntPtr ptr = handle.AddrOfPinnedObject();
tgaHeader header = (tgaHeader)Marshal.PtrToStructure(ptr, typeof(tgaHeader));
int offset = Marshal.SizeOf(header);
int image_size = header.width * header.height * 4; // 32bit固定
byte[] image_buf = new byte[image_size];
// 上下反転
int w = header.width;
int h = header.height;
int dst_row_size = w * 4;
int bpp = header.depth / 8;
int src_row_size = w * bpp;
Func <int, int, int> getAddrFunc;
if ((header.flag & (1 << 5)) == 0)
{
getAddrFunc = (height, current_heght) => {
return((height - 1 - current_heght) * dst_row_size);
};
}
else
{
getAddrFunc = (height, current_heght) => {
return(current_heght * dst_row_size);
};
}
for (int ch = 0; ch < h; ch++)
{
int src_start = src_row_size * ch + offset;
int dst_start = getAddrFunc(h, ch);
for (int cw = 0; cw < w; cw++)
{
int src = src_start + cw * bpp;
int dst = dst_start + cw * 4;
image_buf[dst + 0] = data[src + 0];
image_buf[dst + 1] = data[src + 1];
image_buf[dst + 2] = data[src + 2];
image_buf[dst + 3] = (bpp == 4) ? data[src + 3] : (byte)255;
}
}
byte[][][] data_ary = new byte[][][] {
new byte[][] {
image_buf,
},
};
BufferDesc desc = new BufferDesc()
{
width = header.width,
height = header.height,
format = Format.B8G8R8A8_UNorm,
initData = data_ary,
mips = 0,
};
Initialize(desc);
handle.Free();
}
else
{
// その他フォーマット
shaderResourceView_ = ShaderResourceView.FromStream(GraphicsCore.D3D11Device, s, (int)stream.Length);
}
// 情報取得
if (shaderResourceView_.Resource is Texture2D)
{
var tex = (Texture2D)shaderResourceView_.Resource;
width_ = tex.Description.Width;
height_ = tex.Description.Height;
format_ = tex.Description.Format;
mips_ = tex.Description.MipLevels;
}
else if (shaderResourceView_.Resource is Texture3D)
{
var tex = (Texture3D)shaderResourceView_.Resource;
width_ = tex.Description.Width;
height_ = tex.Description.Height;
format_ = tex.Description.Format;
mips_ = tex.Description.MipLevels;
}
buffer_ = shaderResourceView_.Resource;
}
}
