mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-26 03:30:46 +00:00
528 lines
12 KiB
C++
528 lines
12 KiB
C++
/*
|
|
** tgatexture.cpp
|
|
** Texture class for TGA images
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2006-2019 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 "files.h"
|
|
#include "templates.h"
|
|
#include "bitmap.h"
|
|
#include "image.h"
|
|
#include "cache1d.h"
|
|
#include "imagehelpers.h"
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
// TGA file header
|
|
//
|
|
//==========================================================================
|
|
|
|
#pragma pack(1)
|
|
|
|
struct TGAHeader
|
|
{
|
|
uint8_t id_len;
|
|
uint8_t has_cm;
|
|
uint8_t img_type;
|
|
int16_t cm_first;
|
|
int16_t cm_length;
|
|
uint8_t cm_size;
|
|
|
|
int16_t x_origin;
|
|
int16_t y_origin;
|
|
int16_t width;
|
|
int16_t height;
|
|
uint8_t bpp;
|
|
uint8_t img_desc;
|
|
};
|
|
|
|
#pragma pack()
|
|
|
|
//==========================================================================
|
|
//
|
|
// a TGA texture
|
|
//
|
|
//==========================================================================
|
|
|
|
class FTGATexture : public FImageSource
|
|
{
|
|
public:
|
|
FTGATexture (TGAHeader *);
|
|
|
|
int CopyPixels(FBitmap *bmp, int conversion) override;
|
|
|
|
protected:
|
|
void ReadCompressed(FileReader &lump, uint8_t * buffer, int bytesperpixel);
|
|
void CreatePalettedPixels(uint8_t *destbuffer) override;
|
|
};
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
FImageSource *TGAImage_TryCreate(FileReader & file)
|
|
{
|
|
TGAHeader hdr;
|
|
|
|
if (file.GetLength() < (long)sizeof(hdr)) return NULL;
|
|
|
|
file.Seek(0, FileReader::SeekSet);
|
|
file.Read(&hdr, sizeof(hdr));
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
|
|
// 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 NULL;
|
|
if (hdr.width <=0 || hdr.height <=0 || hdr.width > 2048 || hdr.height > 2048) return NULL;
|
|
if (hdr.bpp != 8 && hdr.bpp != 15 && hdr.bpp != 16 && hdr.bpp !=24 && hdr.bpp !=32) return NULL;
|
|
if (hdr.img_type <= 0 || hdr.img_type > 11) return NULL;
|
|
if (hdr.img_type >=4 && hdr.img_type <= 8) return NULL;
|
|
if ((hdr.img_desc & 16) != 0) return NULL;
|
|
|
|
file.Seek(0, FileReader::SeekSet);
|
|
file.Read(&hdr, sizeof(hdr));
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
|
|
return new FTGATexture(&hdr);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
FTGATexture::FTGATexture(TGAHeader * hdr)
|
|
{
|
|
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));
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void FTGATexture::ReadCompressed(FileReader &lump, uint8_t * buffer, int bytesperpixel)
|
|
{
|
|
uint8_t data[4];
|
|
int Size = Width * Height;
|
|
|
|
while (Size > 0)
|
|
{
|
|
uint8_t b = lump.ReadUInt8();
|
|
if (b & 128)
|
|
{
|
|
b&=~128;
|
|
lump.Read(data, bytesperpixel);
|
|
for (int i=std::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, std::min<int>(Size, (b+1))*bytesperpixel);
|
|
buffer += (b+1)*bytesperpixel;
|
|
}
|
|
Size -= b+1;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void FTGATexture::CreatePalettedPixels(uint8_t *buffer)
|
|
{
|
|
uint8_t PaletteMap[256];
|
|
auto lump = kopenFileReader(Name, 0);
|
|
if (!lump.isOpen()) return;
|
|
TGAHeader hdr;
|
|
uint16_t w;
|
|
uint8_t r,g,b,a;
|
|
|
|
TArray<uint8_t> Pixels(Width*Height, true);
|
|
lump.Read(&hdr, sizeof(hdr));
|
|
lump.Seek(hdr.id_len, FileReader::SeekCur);
|
|
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
hdr.cm_first = LittleShort(hdr.cm_first);
|
|
hdr.cm_length = LittleShort(hdr.cm_length);
|
|
|
|
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:
|
|
w = lump.ReadUInt16();
|
|
r = (w & 0x001F) << 3;
|
|
g = (w & 0x03E0) >> 2;
|
|
b = (w & 0x7C00) >> 7;
|
|
a = 255;
|
|
break;
|
|
|
|
case 24:
|
|
b = lump.ReadUInt8();
|
|
g = lump.ReadUInt8();
|
|
r = lump.ReadUInt8();
|
|
a=255;
|
|
break;
|
|
|
|
case 32:
|
|
b = lump.ReadUInt8();
|
|
g = lump.ReadUInt8();
|
|
r = lump.ReadUInt8();
|
|
a = lump.ReadUInt8();
|
|
if ((hdr.img_desc&15)!=8) a=255;
|
|
break;
|
|
|
|
default: // should never happen
|
|
r=g=b=a=0;
|
|
break;
|
|
}
|
|
PaletteMap[i] = ImageHelpers::RGBToPalettePrecise(false, r, g, b, a);
|
|
}
|
|
}
|
|
|
|
int Size = Width * Height * (hdr.bpp>>3);
|
|
|
|
if (hdr.img_type < 4) // uncompressed
|
|
{
|
|
lump.Read(buffer, Size);
|
|
}
|
|
else // compressed
|
|
{
|
|
ReadCompressed(lump, buffer, hdr.bpp>>3);
|
|
}
|
|
|
|
uint8_t * 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&32))
|
|
{
|
|
ptr += (Height-1) * Pitch;
|
|
Pitch = -Pitch;
|
|
}
|
|
|
|
switch (hdr.img_type & 7)
|
|
{
|
|
case 1: // paletted
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
uint8_t * 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++)
|
|
{
|
|
uint16_t * p = (uint16_t*)(ptr + y * Pitch);
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
int v = LittleShort(*p);
|
|
Pixels[x*Height + y] = ImageHelpers::RGBToPalette(false, ((v >> 10) & 0x1f) * 8, ((v >> 5) & 0x1f) * 8, (v & 0x1f) * 8);
|
|
p+=step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
uint8_t * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height + y] = ImageHelpers::RGBToPalette(false, p[2], p[1], p[0]);
|
|
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++)
|
|
{
|
|
uint8_t * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height + y] = ImageHelpers::RGBToPalette(false, p[2], p[1], p[0]);
|
|
p+=step_x;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(int y=0;y<Height;y++)
|
|
{
|
|
uint8_t * p = ptr + y * Pitch;
|
|
for(int x=0;x<Width;x++)
|
|
{
|
|
Pixels[x*Height + y] = ImageHelpers::RGBToPalette(false, p[2], p[1], p[0], p[3]);
|
|
p+=step_x;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 3: // Grayscale
|
|
{
|
|
auto remap = ImageHelpers::GetGraymap();
|
|
switch (hdr.bpp)
|
|
{
|
|
case 8:
|
|
for (int y = 0; y < Height; y++)
|
|
{
|
|
uint8_t * p = ptr + y * Pitch;
|
|
for (int x = 0; x < Width; x++)
|
|
{
|
|
Pixels[x*Height + y] = remap[*p];
|
|
p += step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 16:
|
|
for (int y = 0; y < Height; y++)
|
|
{
|
|
uint8_t * p = ptr + y * Pitch;
|
|
for (int x = 0; x < Width; x++)
|
|
{
|
|
Pixels[x*Height + y] = remap[p[1]]; // only use the high byte
|
|
p += step_x;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// FTGATexture::CopyPixels
|
|
//
|
|
//===========================================================================
|
|
|
|
int FTGATexture::CopyPixels(FBitmap *bmp, int conversion)
|
|
{
|
|
PalEntry pe[256];
|
|
auto lump = kopenFileReader(Name, 0);
|
|
if (!lump.isOpen()) return -1;
|
|
TGAHeader hdr;
|
|
uint16_t w;
|
|
uint8_t r,g,b,a;
|
|
int transval = 0;
|
|
|
|
lump.Read(&hdr, sizeof(hdr));
|
|
lump.Seek(hdr.id_len, FileReader::SeekCur);
|
|
|
|
hdr.width = LittleShort(hdr.width);
|
|
hdr.height = LittleShort(hdr.height);
|
|
hdr.cm_first = LittleShort(hdr.cm_first);
|
|
hdr.cm_length = LittleShort(hdr.cm_length);
|
|
|
|
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:
|
|
w = lump.ReadUInt16();
|
|
r = (w & 0x001F) << 3;
|
|
g = (w & 0x03E0) >> 2;
|
|
b = (w & 0x7C00) >> 7;
|
|
a = 255;
|
|
break;
|
|
|
|
case 24:
|
|
b = lump.ReadUInt8();
|
|
g = lump.ReadUInt8();
|
|
r = lump.ReadUInt8();
|
|
a = 255;
|
|
break;
|
|
|
|
case 32:
|
|
b = lump.ReadUInt8();
|
|
g = lump.ReadUInt8();
|
|
r = lump.ReadUInt8();
|
|
a = lump.ReadUInt8();
|
|
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(a, r, g, b);
|
|
}
|
|
}
|
|
|
|
int Size = Width * Height * (hdr.bpp>>3);
|
|
TArray<uint8_t> sbuffer(Size, true);
|
|
|
|
if (hdr.img_type < 4) // uncompressed
|
|
{
|
|
lump.Read(sbuffer.Data(), Size);
|
|
}
|
|
else // compressed
|
|
{
|
|
ReadCompressed(lump, sbuffer.Data(), hdr.bpp>>3);
|
|
}
|
|
|
|
uint8_t * ptr = sbuffer.Data();
|
|
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&32))
|
|
{
|
|
ptr += (Height-1) * Pitch;
|
|
Pitch = -Pitch;
|
|
}
|
|
|
|
switch (hdr.img_type & 7)
|
|
{
|
|
case 1: // paletted
|
|
bmp->CopyPixelData(0, 0, ptr, Width, Height, step_x, Pitch, 0, pe);
|
|
break;
|
|
|
|
case 2: // RGB
|
|
switch (hdr.bpp)
|
|
{
|
|
case 15:
|
|
case 16:
|
|
bmp->CopyPixelDataRGB(0, 0, ptr, Width, Height, step_x, Pitch, 0, CF_RGB555);
|
|
break;
|
|
|
|
case 24:
|
|
bmp->CopyPixelDataRGB(0, 0, ptr, Width, Height, step_x, Pitch, 0, CF_BGR);
|
|
break;
|
|
|
|
case 32:
|
|
if ((hdr.img_desc&15)!=8) // 32 bits without a valid alpha channel
|
|
{
|
|
bmp->CopyPixelDataRGB(0, 0, ptr, Width, Height, step_x, Pitch, 0, CF_BGR);
|
|
}
|
|
else
|
|
{
|
|
bmp->CopyPixelDataRGB(0, 0, ptr, Width, Height, step_x, Pitch, 0, 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(255,i,i,i); // gray map
|
|
bmp->CopyPixelData(0, 0, ptr, Width, Height, step_x, Pitch, 0, pe);
|
|
break;
|
|
|
|
case 16:
|
|
bmp->CopyPixelDataRGB(0, 0, ptr, Width, Height, step_x, Pitch, 0, CF_I16);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return transval;
|
|
}
|