mirror of https://github.com/ZDoom/qzdoom.git
537 lines
12 KiB
C++
537 lines
12 KiB
C++
/*
|
|
** tgatexture.cpp
|
|
** Texture class for TGA images
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2006 Christoph Oelckers
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
**
|
|
*/
|
|
|
|
#include "doomtype.h"
|
|
#include "files.h"
|
|
#include "r_local.h"
|
|
#include "w_wad.h"
|
|
#include "templates.h"
|
|
|
|
|
|
bool FTGATexture::Check(FileReader & data)
|
|
{
|
|
TGAHeader hdr;
|
|
|
|
if (data.GetLength() < (long)sizeof(hdr)) return false;
|
|
|
|
data.Seek(0, SEEK_SET);
|
|
data.Read(&hdr, sizeof(hdr));
|
|
#ifdef WORDS_BIGENDIAN
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
#endif
|
|
|
|
// Not much that can be done here because TGA does not have a proper
|
|
// header to be identified with.
|
|
if (hdr.has_cm != 0 && hdr.has_cm != 1) return false;
|
|
if (hdr.width <=0 || hdr.height <=0 || hdr.width > 2048 || hdr.height > 2048) return false;
|
|
if (hdr.bpp != 8 && hdr.bpp != 15 && hdr.bpp != 16 && hdr.bpp !=24 && hdr.bpp !=32) return false;
|
|
if (hdr.img_type <= 0 || hdr.img_type > 11) return false;
|
|
if (hdr.img_type >=4 && hdr.img_type <= 8) return false;
|
|
if ((hdr.img_desc & 16) != 0) return false;
|
|
return true;
|
|
}
|
|
|
|
FTexture *FTGATexture::Create(FileReader & file, int lumpnum)
|
|
{
|
|
TGAHeader hdr;
|
|
file.Seek(0, SEEK_SET);
|
|
file.Read(&hdr, sizeof(hdr));
|
|
#ifdef WORDS_BIGENDIAN
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
#endif
|
|
|
|
return new FTGATexture(lumpnum, &hdr);
|
|
}
|
|
|
|
|
|
FTGATexture::FTGATexture (int lumpnum, TGAHeader * hdr)
|
|
: SourceLump(lumpnum), Pixels(0), Spans(0)
|
|
{
|
|
Wads.GetLumpName (Name, lumpnum);
|
|
Name[8] = 0;
|
|
Width = hdr->width;
|
|
Height = hdr->height;
|
|
// Alpha channel is used only for 32 bit RGBA and paletted images with RGBA palettes.
|
|
bMasked = (hdr->img_desc&15)==8 && (hdr->bpp==32 || (hdr->img_type==1 && hdr->cm_size==32));
|
|
CalcBitSize();
|
|
}
|
|
|
|
FTGATexture::~FTGATexture ()
|
|
{
|
|
Unload ();
|
|
if (Spans != NULL)
|
|
{
|
|
FreeSpans (Spans);
|
|
Spans = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
void FTGATexture::Unload ()
|
|
{
|
|
if (Pixels != NULL)
|
|
{
|
|
delete[] Pixels;
|
|
Pixels = NULL;
|
|
}
|
|
}
|
|
|
|
FTextureFormat FTGATexture::GetFormat()
|
|
{
|
|
return TEX_RGB;
|
|
}
|
|
|
|
const BYTE *FTGATexture::GetColumn (unsigned int column, const Span **spans_out)
|
|
{
|
|
if (Pixels == NULL)
|
|
{
|
|
MakeTexture ();
|
|
}
|
|
if ((unsigned)column >= (unsigned)Width)
|
|
{
|
|
if (WidthMask + 1 == Width)
|
|
{
|
|
column &= WidthMask;
|
|
}
|
|
else
|
|
{
|
|
column %= Width;
|
|
}
|
|
}
|
|
if (spans_out != NULL)
|
|
{
|
|
*spans_out = Spans[column];
|
|
}
|
|
return Pixels + column*Height;
|
|
}
|
|
|
|
const BYTE *FTGATexture::GetPixels ()
|
|
{
|
|
if (Pixels == NULL)
|
|
{
|
|
MakeTexture ();
|
|
}
|
|
return Pixels;
|
|
}
|
|
|
|
void FTGATexture::ReadCompressed(FileReader &lump, BYTE * buffer, int bytesperpixel)
|
|
{
|
|
BYTE b;
|
|
BYTE data[4];
|
|
int Size = Width * Height;
|
|
|
|
while (Size > 0)
|
|
{
|
|
lump >> b;
|
|
if (b & 128)
|
|
{
|
|
b&=~128;
|
|
lump.Read(data, bytesperpixel);
|
|
for (int i=MIN<int>(Size, (b+1)); i>0; i--)
|
|
{
|
|
buffer[0] = data[0];
|
|
if (bytesperpixel>=2) buffer[1] = data[1];
|
|
if (bytesperpixel>=3) buffer[2] = data[2];
|
|
if (bytesperpixel==4) buffer[3] = data[3];
|
|
buffer+=bytesperpixel;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
lump.Read(buffer, MIN<int>(Size, (b+1))*bytesperpixel);
|
|
buffer += (b+1)*bytesperpixel;
|
|
}
|
|
Size -= b+1;
|
|
}
|
|
}
|
|
|
|
void FTGATexture::MakeTexture ()
|
|
{
|
|
BYTE PaletteMap[256];
|
|
FWadLump lump = Wads.OpenLumpNum (SourceLump);
|
|
TGAHeader hdr;
|
|
WORD w;
|
|
BYTE r,g,b,a;
|
|
BYTE * buffer;
|
|
|
|
Pixels = new BYTE[Width*Height];
|
|
lump.Read(&hdr, sizeof(hdr));
|
|
lump.Seek(hdr.id_len, SEEK_CUR);
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
hdr.cm_first = LittleShort(hdr.cm_first);
|
|
hdr.cm_length = LittleShort(hdr.cm_length);
|
|
#endif
|
|
|
|
if (hdr.has_cm)
|
|
{
|
|
memset(PaletteMap, 0, 256);
|
|
for (int i = hdr.cm_first; i < hdr.cm_first + hdr.cm_length && i < 256; i++)
|
|
{
|
|
switch (hdr.cm_size)
|
|
{
|
|
case 15:
|
|
case 16:
|
|
lump >> w;
|
|
r = (w & 0x001F) << 3;
|
|
g = (w & 0x03E0) >> 2;
|
|
b = (w & 0x7C00) >> 7;
|
|
a = 255;
|
|
break;
|
|
|
|
case 24:
|
|
lump >> b >> g >> r;
|
|
a=255;
|
|
break;
|
|
|
|
case 32:
|
|
lump >> b >> g >> r >> a;
|
|
if ((hdr.img_desc&15)!=8) a=255;
|
|
break;
|
|
|
|
default: // should never happen
|
|
r=g=b=a=0;
|
|
break;
|
|
}
|
|
PaletteMap[i] = a>=128? ColorMatcher.Pick(r, g, b) : 0;
|
|
}
|
|
}
|
|
|
|
int Size = Width * Height * (hdr.bpp>>3);
|
|
buffer = new BYTE[Size];
|
|
|
|
if (hdr.img_type < 4) // uncompressed
|
|
{
|
|
lump.Read(buffer, Size);
|
|
}
|
|
else // compressed
|
|
{
|
|
ReadCompressed(lump, buffer, hdr.bpp>>3);
|
|
}
|
|
|
|
BYTE * ptr = buffer;
|
|
int step_x = (hdr.bpp>>3);
|
|
int Pitch = Width * step_x;
|
|
|
|
if (hdr.img_desc&32)
|
|
{
|
|
ptr += (Width-1) * step_x;
|
|
step_x =- step_x;
|
|
}
|
|
if (!(hdr.img_desc&64))
|
|
{
|
|
ptr += (Height-1) * Pitch;
|
|
Pitch = -Pitch;
|
|
}
|
|
|
|
switch (hdr.img_type & 7)
|
|
{
|
|
case 1: // paletted
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = PaletteMap[*p];
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 2: // RGB
|
|
switch (hdr.bpp)
|
|
{
|
|
case 15:
|
|
case 16:
|
|
step_x>>=1;
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
WORD * p = (WORD*)(ptr + y * Pitch);
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
int v = LittleLong(*p);
|
|
Pixels[x*Height+y] = RGB32k[(v>>10) & 0x1f][(v>>5) & 0x1f][v & 0x1f];
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = RGB32k[p[2]>>3][p[1]>>3][p[0]>>3];
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 32:
|
|
if ((hdr.img_desc&15)!=8) // 32 bits without a valid alpha channel
|
|
{
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = RGB32k[p[2]>>3][p[1]>>3][p[0]>>3];
|
|
p+=step_x;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = p[3] >= 128? RGB32k[p[2]>>3][p[1]>>3][p[0]>>3] : 0;
|
|
p+=step_x;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 3: // Grayscale
|
|
switch (hdr.bpp)
|
|
{
|
|
case 8:
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = GrayMap[*p];
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 16:
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
BYTE * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height+y] = GrayMap[p[1]]; // only use the high byte
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
delete [] buffer;
|
|
if (Spans == NULL)
|
|
{
|
|
Spans = CreateSpans (Pixels);
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// FTGATexture::CopyTrueColorPixels
|
|
//
|
|
//===========================================================================
|
|
|
|
int FTGATexture::CopyTrueColorPixels(BYTE *buffer, int buf_pitch, int buf_height, int x, int y)
|
|
{
|
|
PalEntry pe[256];
|
|
FWadLump lump = Wads.OpenLumpNum (SourceLump);
|
|
TGAHeader hdr;
|
|
WORD w;
|
|
BYTE r,g,b,a;
|
|
BYTE * sbuffer;
|
|
int transval = 0;
|
|
|
|
lump.Read(&hdr, sizeof(hdr));
|
|
lump.Seek(hdr.id_len, SEEK_CUR);
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
hdr.cm_first = LittleShort(hdr.cm_first);
|
|
hdr.cm_length = LittleShort(hdr.cm_length);
|
|
#endif
|
|
|
|
if (hdr.has_cm)
|
|
{
|
|
memset(pe, 0, 256*sizeof(PalEntry));
|
|
for (int i = hdr.cm_first; i < hdr.cm_first + hdr.cm_length && i < 256; i++)
|
|
{
|
|
switch (hdr.cm_size)
|
|
{
|
|
case 15:
|
|
case 16:
|
|
lump >> w;
|
|
r = (w & 0x001F) << 3;
|
|
g = (w & 0x03E0) >> 2;
|
|
b = (w & 0x7C00) >> 7;
|
|
a = 255;
|
|
break;
|
|
|
|
case 24:
|
|
lump >> b >> g >> r;
|
|
a=255;
|
|
break;
|
|
|
|
case 32:
|
|
lump >> b >> g >> r >> a;
|
|
if ((hdr.img_desc&15)!=8) a=255;
|
|
else if (a!=0 && a!=255) transval = true;
|
|
break;
|
|
|
|
default: // should never happen
|
|
r=g=b=a=0;
|
|
break;
|
|
}
|
|
pe[i] = PalEntry(255-a, r, g, b);
|
|
}
|
|
}
|
|
|
|
int Size = Width * Height * (hdr.bpp>>3);
|
|
sbuffer = new BYTE[Size];
|
|
|
|
if (hdr.img_type < 4) // uncompressed
|
|
{
|
|
lump.Read(sbuffer, Size);
|
|
}
|
|
else // compressed
|
|
{
|
|
ReadCompressed(lump, sbuffer, hdr.bpp>>3);
|
|
}
|
|
|
|
BYTE * ptr = sbuffer;
|
|
int step_x = (hdr.bpp>>3);
|
|
int Pitch = Width * step_x;
|
|
|
|
if (hdr.img_desc&32)
|
|
{
|
|
ptr += (Width-1) * step_x;
|
|
step_x =- step_x;
|
|
}
|
|
if (!(hdr.img_desc&64))
|
|
{
|
|
ptr += (Height-1) * Pitch;
|
|
Pitch = -Pitch;
|
|
}
|
|
|
|
switch (hdr.img_type & 7)
|
|
{
|
|
case 1: // paletted
|
|
screen->CopyPixelData(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, pe);
|
|
break;
|
|
|
|
case 2: // RGB
|
|
switch (hdr.bpp)
|
|
{
|
|
case 15:
|
|
case 16:
|
|
screen->CopyPixelDataRGB(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, CF_RGB555);
|
|
break;
|
|
|
|
case 24:
|
|
screen->CopyPixelDataRGB(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, CF_BGR);
|
|
break;
|
|
|
|
case 32:
|
|
if ((hdr.img_desc&15)!=8) // 32 bits without a valid alpha channel
|
|
{
|
|
screen->CopyPixelDataRGB(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, CF_BGR);
|
|
}
|
|
else
|
|
{
|
|
screen->CopyPixelDataRGB(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, CF_BGRA);
|
|
transval = -1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 3: // Grayscale
|
|
switch (hdr.bpp)
|
|
{
|
|
case 8:
|
|
for(int i=0;i<256;i++) pe[i]=PalEntry(0,i,i,i); // gray map
|
|
screen->CopyPixelData(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, pe);
|
|
break;
|
|
|
|
case 16:
|
|
screen->CopyPixelDataRGB(buffer, buf_pitch, buf_height, x, y, ptr, Width, Height, step_x, Pitch, CF_I16);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
delete [] sbuffer;
|
|
return transval;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
//
|
|
//===========================================================================
|
|
|
|
bool FTGATexture::UseBasePalette()
|
|
{
|
|
return false;
|
|
}
|