void FFlatTexture::MakeTexture ()
{
FWadLump lump = Wads.OpenLumpNum (SourceLump);
Pixels = new BYTE[Width*Height];
long numread = lump.Read (Pixels, Width*Height);
if (numread < Width*Height)
{
memset (Pixels + numread, 0xBB, Width*Height - numread);
}
FlipSquareBlockRemap (Pixels, Width, Height, GPalette.Remap);
}
void FPNGTexture::MakeTexture ()
{
FileReader *lump;
if (SourceLump >= 0)
{
lump = new FWadLump(Wads.OpenLumpNum(SourceLump));
}
else
{
lump = fr;// new FileReader(SourceFile.GetChars());
}
Pixels = new uint8_t[Width*Height];
if (StartOfIDAT == 0)
{
memset (Pixels, 0x99, Width*Height);
}
else
{
uint32_t len, id;
lump->Seek (StartOfIDAT, SEEK_SET);
lump->Read(&len, 4);
lump->Read(&id, 4);
if (ColorType == 0 || ColorType == 3) /* Grayscale and paletted */
{
M_ReadIDAT (lump, Pixels, Width, Height, Width, BitDepth, ColorType, Interlace, BigLong((unsigned int)len));
if (Width == Height)
{
if (PaletteMap != NULL)
{
FlipSquareBlockRemap (Pixels, Width, Height, PaletteMap);
}
else
{
FlipSquareBlock (Pixels, Width, Height);
}
}
else
{
uint8_t *newpix = new uint8_t[Width*Height];
if (PaletteMap != NULL)
{
FlipNonSquareBlockRemap (newpix, Pixels, Width, Height, Width, PaletteMap);
}
else
{
FlipNonSquareBlock (newpix, Pixels, Width, Height, Width);
}
uint8_t *oldpix = Pixels;
Pixels = newpix;
delete[] oldpix;
}
}
else /* RGB and/or Alpha present */
{
int bytesPerPixel = ColorType == 2 ? 3 : ColorType == 4 ? 2 : 4;
uint8_t *tempix = new uint8_t[Width * Height * bytesPerPixel];
uint8_t *in, *out;
int x, y, pitch, backstep;
M_ReadIDAT (lump, tempix, Width, Height, Width*bytesPerPixel, BitDepth, ColorType, Interlace, BigLong((unsigned int)len));
in = tempix;
out = Pixels;
// Convert from source format to paletted, column-major.
// Formats with alpha maps are reduced to only 1 bit of alpha.
switch (ColorType)
{
case 2: // RGB
pitch = Width * 3;
backstep = Height * pitch - 3;
for (x = Width; x > 0; --x)
{
for (y = Height; y > 0; --y)
{
if (!HaveTrans)
{
*out++ = RGB256k.RGB[in[0]>>2][in[1]>>2][in[2]>>2];
}
else
{
if (in[0] == NonPaletteTrans[0] &&
in[1] == NonPaletteTrans[1] &&
in[2] == NonPaletteTrans[2])
{
*out++ = 0;
}
else
{
*out++ = RGB256k.RGB[in[0]>>2][in[1]>>2][in[2]>>2];
}
}
in += pitch;
}
in -= backstep;
}
break;
case 4: // Grayscale + Alpha
pitch = Width * 2;
backstep = Height * pitch - 2;
if (PaletteMap != NULL)
{
for (x = Width; x > 0; --x)
{
for (y = Height; y > 0; --y)
{
*out++ = in[1] < 128 ? 0 : PaletteMap[in[0]];
in += pitch;
}
in -= backstep;
}
}
else
{
for (x = Width; x > 0; --x)
{
for (y = Height; y > 0; --y)
{
*out++ = in[1] < 128 ? 0 : in[0];
in += pitch;
}
in -= backstep;
}
}
break;
case 6: // RGB + Alpha
pitch = Width * 4;
backstep = Height * pitch - 4;
for (x = Width; x > 0; --x)
{
for (y = Height; y > 0; --y)
{
*out++ = in[3] < 128 ? 0 : RGB256k.RGB[in[0]>>2][in[1]>>2][in[2]>>2];
in += pitch;
}
in -= backstep;
}
break;
}
delete[] tempix;
}