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Xash3D FWGS engine.
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xash3d-fwgs/engine/common/imagelib/img_utils.c

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/*
img_utils.c - image common tools
Copyright (C) 2007 Uncle Mike
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include "imagelib.h"
#include "mathlib.h"
#include "mod_local.h"
#include "gl_export.h"
#define LERPBYTE( i ) r = resamplerow1[i]; out[i] = (byte)(((( resamplerow2[i] - r ) * lerp)>>16 ) + r )
#define FILTER_SIZE 5
uint d_8toQ1table[256];
uint d_8toHLtable[256];
uint d_8to24table[256];
qboolean q1palette_init = false;
qboolean hlpalette_init = false;
static byte palette_q1[768] =
{
0,0,0,15,15,15,31,31,31,47,47,47,63,63,63,75,75,75,91,91,91,107,107,107,123,123,123,139,139,139,155,155,155,171,
171,171,187,187,187,203,203,203,219,219,219,235,235,235,15,11,7,23,15,11,31,23,11,39,27,15,47,35,19,55,43,23,63,
47,23,75,55,27,83,59,27,91,67,31,99,75,31,107,83,31,115,87,31,123,95,35,131,103,35,143,111,35,11,11,15,19,19,27,
27,27,39,39,39,51,47,47,63,55,55,75,63,63,87,71,71,103,79,79,115,91,91,127,99,99,139,107,107,151,115,115,163,123,
123,175,131,131,187,139,139,203,0,0,0,7,7,0,11,11,0,19,19,0,27,27,0,35,35,0,43,43,7,47,47,7,55,55,7,63,63,7,71,71,
7,75,75,11,83,83,11,91,91,11,99,99,11,107,107,15,7,0,0,15,0,0,23,0,0,31,0,0,39,0,0,47,0,0,55,0,0,63,0,0,71,0,0,79,
0,0,87,0,0,95,0,0,103,0,0,111,0,0,119,0,0,127,0,0,19,19,0,27,27,0,35,35,0,47,43,0,55,47,0,67,55,0,75,59,7,87,67,7,
95,71,7,107,75,11,119,83,15,131,87,19,139,91,19,151,95,27,163,99,31,175,103,35,35,19,7,47,23,11,59,31,15,75,35,19,
87,43,23,99,47,31,115,55,35,127,59,43,143,67,51,159,79,51,175,99,47,191,119,47,207,143,43,223,171,39,239,203,31,255,
243,27,11,7,0,27,19,0,43,35,15,55,43,19,71,51,27,83,55,35,99,63,43,111,71,51,127,83,63,139,95,71,155,107,83,167,123,
95,183,135,107,195,147,123,211,163,139,227,179,151,171,139,163,159,127,151,147,115,135,139,103,123,127,91,111,119,
83,99,107,75,87,95,63,75,87,55,67,75,47,55,67,39,47,55,31,35,43,23,27,35,19,19,23,11,11,15,7,7,187,115,159,175,107,
143,163,95,131,151,87,119,139,79,107,127,75,95,115,67,83,107,59,75,95,51,63,83,43,55,71,35,43,59,31,35,47,23,27,35,
19,19,23,11,11,15,7,7,219,195,187,203,179,167,191,163,155,175,151,139,163,135,123,151,123,111,135,111,95,123,99,83,
107,87,71,95,75,59,83,63,51,67,51,39,55,43,31,39,31,23,27,19,15,15,11,7,111,131,123,103,123,111,95,115,103,87,107,
95,79,99,87,71,91,79,63,83,71,55,75,63,47,67,55,43,59,47,35,51,39,31,43,31,23,35,23,15,27,19,11,19,11,7,11,7,255,
243,27,239,223,23,219,203,19,203,183,15,187,167,15,171,151,11,155,131,7,139,115,7,123,99,7,107,83,0,91,71,0,75,55,
0,59,43,0,43,31,0,27,15,0,11,7,0,0,0,255,11,11,239,19,19,223,27,27,207,35,35,191,43,43,175,47,47,159,47,47,143,47,
47,127,47,47,111,47,47,95,43,43,79,35,35,63,27,27,47,19,19,31,11,11,15,43,0,0,59,0,0,75,7,0,95,7,0,111,15,0,127,23,
7,147,31,7,163,39,11,183,51,15,195,75,27,207,99,43,219,127,59,227,151,79,231,171,95,239,191,119,247,211,139,167,123,
59,183,155,55,199,195,55,231,227,87,127,191,255,171,231,255,215,255,255,103,0,0,139,0,0,179,0,0,215,0,0,255,0,0,255,
243,147,255,247,199,255,255,255,159,91,83
};
// this is used only for particle colors
static byte palette_hl[768] =
{
0,0,0,15,15,15,31,31,31,47,47,47,63,63,63,75,75,75,91,91,91,107,107,107,123,123,123,139,139,139,155,155,155,171,
171,171,187,187,187,203,203,203,219,219,219,235,235,235,15,11,7,23,15,11,31,23,11,39,27,15,47,35,19,55,43,23,63,
47,23,75,55,27,83,59,27,91,67,31,99,75,31,107,83,31,115,87,31,123,95,35,131,103,35,143,111,35,11,11,15,19,19,27,
27,27,39,39,39,51,47,47,63,55,55,75,63,63,87,71,71,103,79,79,115,91,91,127,99,99,139,107,107,151,115,115,163,123,
123,175,131,131,187,139,139,203,0,0,0,7,7,0,11,11,0,19,19,0,27,27,0,35,35,0,43,43,7,47,47,7,55,55,7,63,63,7,71,71,
7,75,75,11,83,83,11,91,91,11,99,99,11,107,107,15,7,0,0,15,0,0,23,0,0,31,0,0,39,0,0,47,0,0,55,0,0,63,0,0,71,0,0,79,
0,0,87,0,0,95,0,0,103,0,0,111,0,0,119,0,0,127,0,0,19,19,0,27,27,0,35,35,0,47,43,0,55,47,0,67,55,0,75,59,7,87,67,7,
95,71,7,107,75,11,119,83,15,131,87,19,139,91,19,151,95,27,163,99,31,175,103,35,35,19,7,47,23,11,59,31,15,75,35,19,
87,43,23,99,47,31,115,55,35,127,59,43,143,67,51,159,79,51,175,99,47,191,119,47,207,143,43,223,171,39,239,203,31,255,
243,27,11,7,0,27,19,0,43,35,15,55,43,19,71,51,27,83,55,35,99,63,43,111,71,51,127,83,63,139,95,71,155,107,83,167,123,
95,183,135,107,195,147,123,211,163,139,227,179,151,171,139,163,159,127,151,147,115,135,139,103,123,127,91,111,119,
83,99,107,75,87,95,63,75,87,55,67,75,47,55,67,39,47,55,31,35,43,23,27,35,19,19,23,11,11,15,7,7,187,115,159,175,107,
143,163,95,131,151,87,119,139,79,107,127,75,95,115,67,83,107,59,75,95,51,63,83,43,55,71,35,43,59,31,35,47,23,27,35,
19,19,23,11,11,15,7,7,219,195,187,203,179,167,191,163,155,175,151,139,163,135,123,151,123,111,135,111,95,123,99,83,
107,87,71,95,75,59,83,63,51,67,51,39,55,43,31,39,31,23,27,19,15,15,11,7,111,131,123,103,123,111,95,115,103,87,107,
95,79,99,87,71,91,79,63,83,71,55,75,63,47,67,55,43,59,47,35,51,39,31,43,31,23,35,23,15,27,19,11,19,11,7,11,7,255,
243,27,239,223,23,219,203,19,203,183,15,187,167,15,171,151,11,155,131,7,139,115,7,123,99,7,107,83,0,91,71,0,75,55,
0,59,43,0,43,31,0,27,15,0,11,7,0,0,0,255,11,11,239,19,19,223,27,27,207,35,35,191,43,43,175,47,47,159,47,47,143,47,
47,127,47,47,111,47,47,95,43,43,79,35,35,63,27,27,47,19,19,31,11,11,15,43,0,0,59,0,0,75,7,0,95,7,0,111,15,0,127,23,
7,147,31,7,163,39,11,183,51,15,195,75,27,207,99,43,219,127,59,227,151,79,231,171,95,239,191,119,247,211,139,167,123,
59,183,155,55,199,195,55,231,227,87,0,255,0,171,231,255,215,255,255,103,0,0,139,0,0,179,0,0,215,0,0,255,0,0,255,243,
147,255,247,199,255,255,255,159,91,83
};
static float FILTER[NUM_FILTERS][FILTER_SIZE][FILTER_SIZE] =
{
{ // regular blur
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
},
{ // light blur
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f },
{ 0.0f, 1.0f, 4.0f, 1.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
},
{ // find edges
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, -1.0f, -1.0f, -1.0f, 0.0f },
{ 0.0f, -1.0f, 8.0f, -1.0f, 0.0f },
{ 0.0f, -1.0f, -1.0f, -1.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f, 0.0f },
},
{ // emboss
{-0.7f, -0.7f, -0.7f, -0.7f, 0.0f },
{-0.7f, -0.7f, -0.7f, 0.0f, 0.7f },
{-0.7f, -0.7f, 0.0f, 0.7f, 0.7f },
{-0.7f, 0.0f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.7f, 0.7f, 0.7f, 0.7f },
}
};
/*
=============================================================================
XASH3D LOAD IMAGE FORMATS
=============================================================================
*/
// stub
static const loadpixformat_t load_null[] =
{
{ NULL, NULL, NULL, IL_HINT_NO }
};
static const loadpixformat_t load_game[] =
{
{ "%s%s.%s", "dds", Image_LoadDDS, IL_HINT_NO }, // dds for world and studio models
{ "%s%s.%s", "tga", Image_LoadTGA, IL_HINT_NO }, // hl vgui menus
{ "%s%s.%s", "bmp", Image_LoadBMP, IL_HINT_NO }, // WON menu images
{ "%s%s.%s", "mip", Image_LoadMIP, IL_HINT_NO }, // hl textures from wad or buffer
{ "%s%s.%s", "mdl", Image_LoadMDL, IL_HINT_HL }, // hl studio model skins
{ "%s%s.%s", "spr", Image_LoadSPR, IL_HINT_HL }, // hl sprite frames
{ "%s%s.%s", "lmp", Image_LoadLMP, IL_HINT_NO }, // hl menu images (cached.wad etc)
{ "%s%s.%s", "fnt", Image_LoadFNT, IL_HINT_HL }, // hl console font (fonts.wad etc)
{ "%s%s.%s", "pal", Image_LoadPAL, IL_HINT_NO }, // install studio\sprite palette
{ NULL, NULL, NULL, IL_HINT_NO }
};
/*
=============================================================================
XASH3D SAVE IMAGE FORMATS
=============================================================================
*/
// stub
static const savepixformat_t save_null[] =
{
{ NULL, NULL, NULL }
};
// Xash3D normal instance
static const savepixformat_t save_game[] =
{
{ "%s%s.%s", "tga", Image_SaveTGA }, // tga screenshots
{ "%s%s.%s", "bmp", Image_SaveBMP }, // bmp levelshots or screenshots
{ NULL, NULL, NULL }
};
void Image_Init( void )
{
// init pools
host.imagepool = Mem_AllocPool( "ImageLib Pool" );
// install image formats (can be re-install later by Image_Setup)
switch( host.type )
{
case HOST_NORMAL:
image.cmd_flags = IL_USE_LERPING|IL_ALLOW_OVERWRITE;
image.loadformats = load_game;
image.saveformats = save_game;
break;
default: // all other instances not using imagelib
image.cmd_flags = 0;
image.loadformats = load_game;
image.saveformats = save_null;
break;
}
image.tempbuffer = NULL;
}
void Image_Shutdown( void )
{
Mem_Check(); // check for leaks
Mem_FreePool( &host.imagepool );
}
byte *Image_Copy( size_t size )
{
byte *out;
out = Mem_Malloc( host.imagepool, size );
memcpy( out, image.tempbuffer, size );
return out;
}
/*
=================
Image_CheckFlag
=================
*/
qboolean Image_CheckFlag( int bit )
{
if( FBitSet( image.force_flags, bit ))
return true;
if( FBitSet( image.cmd_flags, bit ))
return true;
return false;
}
/*
=================
Image_SetForceFlags
=================
*/
void Image_SetForceFlags( uint flags )
{
SetBits( image.force_flags, flags );
}
/*
=================
Image_ClearForceFlags
=================
*/
void Image_ClearForceFlags( void )
{
image.force_flags = 0;
}
/*
=================
Image_AddCmdFlags
=================
*/
void Image_AddCmdFlags( uint flags )
{
SetBits( image.cmd_flags, flags );
}
qboolean Image_ValidSize( const char *name )
{
if( image.width > IMAGE_MAXWIDTH || image.height > IMAGE_MAXHEIGHT || image.width <= 0 || image.height <= 0 )
{
MsgDev( D_ERROR, "Image: %s has invalid sizes %i x %i\n", name, image.width, image.height );
return false;
}
return true;
}
qboolean Image_LumpValidSize( const char *name )
{
if( image.width > LUMP_MAXWIDTH || image.height > LUMP_MAXHEIGHT || image.width <= 0 || image.height <= 0 )
{
MsgDev(D_WARN, "Image_LumpValidSize: (%s) dims out of range[%dx%d]\n", name, image.width,image.height );
return false;
}
return true;
}
/*
=============
Image_ComparePalette
=============
*/
int Image_ComparePalette( const byte *pal )
{
if( pal == NULL )
return PAL_INVALID;
else if( !memcmp( palette_q1, pal, 765 )) // last color was changed
return PAL_QUAKE1;
else if( !memcmp( palette_hl, pal, 765 ))
return PAL_HALFLIFE;
return PAL_CUSTOM;
}
void Image_SetPalette( const byte *pal, uint *d_table )
{
byte rgba[4];
int i;
// setup palette
switch( image.d_rendermode )
{
case LUMP_NORMAL:
for( i = 0; i < 256; i++ )
{
rgba[0] = pal[i*3+0];
rgba[1] = pal[i*3+1];
rgba[2] = pal[i*3+2];
rgba[3] = 0xFF;
d_table[i] = *(uint *)rgba;
}
break;
case LUMP_GRADIENT:
for( i = 0; i < 256; i++ )
{
rgba[0] = pal[765];
rgba[1] = pal[766];
rgba[2] = pal[767];
rgba[3] = i;
d_table[i] = *(uint *)rgba;
}
// d_table[0] = 0x00808080;
break;
case LUMP_MASKED:
for( i = 0; i < 255; i++ )
{
rgba[0] = pal[i*3+0];
rgba[1] = pal[i*3+1];
rgba[2] = pal[i*3+2];
rgba[3] = 0xFF;
d_table[i] = *(uint *)rgba;
}
d_table[255] = 0;
break;
case LUMP_EXTENDED:
for( i = 0; i < 256; i++ )
{
rgba[0] = pal[i*4+0];
rgba[1] = pal[i*4+1];
rgba[2] = pal[i*4+2];
rgba[3] = pal[i*4+3];
d_table[i] = *(uint *)rgba;
}
break;
}
}
void Image_GetPaletteQ1( void )
{
if( !q1palette_init )
{
image.d_rendermode = LUMP_NORMAL;
Image_SetPalette( palette_q1, d_8toQ1table );
d_8toQ1table[255] = 0; // 255 is transparent
q1palette_init = true;
}
image.d_rendermode = LUMP_QUAKE1;
image.d_currentpal = d_8toQ1table;
}
void Image_GetPaletteHL( void )
{
if( !hlpalette_init )
{
image.d_rendermode = LUMP_NORMAL;
Image_SetPalette( palette_hl, d_8toHLtable );
hlpalette_init = true;
}
image.d_rendermode = LUMP_HALFLIFE;
image.d_currentpal = d_8toHLtable;
}
void Image_GetPaletteBMP( const byte *pal )
{
image.d_rendermode = LUMP_EXTENDED;
if( pal )
{
Image_SetPalette( pal, d_8to24table );
image.d_currentpal = d_8to24table;
}
}
void Image_GetPaletteLMP( const byte *pal, int rendermode )
{
image.d_rendermode = rendermode;
if( pal )
{
Image_SetPalette( pal, d_8to24table );
image.d_currentpal = d_8to24table;
}
else
{
switch( rendermode )
{
case LUMP_QUAKE1:
Image_GetPaletteQ1();
break;
case LUMP_HALFLIFE:
Image_GetPaletteHL(); // default half-life palette
break;
default:
MsgDev( D_ERROR, "Image_GetPaletteLMP: invalid palette specified\n" );
Image_GetPaletteHL(); // defaulting to half-life palette
break;
}
}
}
static void Image_ConvertPalTo24bit( rgbdata_t *pic )
{
byte *pal32, *pal24;
byte *converted;
int i;
if( pic->type == PF_INDEXED_24 )
return; // does nothing
pal24 = converted = Mem_Malloc( host.imagepool, 768 );
pal32 = pic->palette;
for( i = 0; i < 256; i++, pal24 += 3, pal32 += 4 )
{
pal24[0] = pal32[0];
pal24[1] = pal32[1];
pal24[2] = pal32[2];
}
Mem_Free( pic->palette );
pic->palette = converted;
pic->type = PF_INDEXED_24;
}
void Image_CopyPalette32bit( void )
{
if( image.palette ) return; // already created ?
image.palette = Mem_Malloc( host.imagepool, 1024 );
memcpy( image.palette, image.d_currentpal, 1024 );
}
void Image_PaletteHueReplace( byte *palSrc, int newHue, int start, int end, int pal_size )
{
float r, g, b;
float maxcol, mincol;
float hue, val, sat;
int i;
hue = (float)(newHue * ( 360.0f / 255 ));
pal_size = bound( 3, pal_size, 4 );
for( i = start; i <= end; i++ )
{
r = palSrc[i*pal_size+0];
g = palSrc[i*pal_size+1];
b = palSrc[i*pal_size+2];
maxcol = max( max( r, g ), b ) / 255.0f;
mincol = min( min( r, g ), b ) / 255.0f;
if( maxcol == 0 ) continue;
val = maxcol;
sat = (maxcol - mincol) / maxcol;
mincol = val * (1.0f - sat);
if( hue <= 120.0f )
{
b = mincol;
if( hue < 60 )
{
r = val;
g = mincol + hue * (val - mincol) / (120.0f - hue);
}
else
{
g = val;
r = mincol + (120.0f - hue) * (val - mincol) / hue;
}
}
else if( hue <= 240.0f )
{
r = mincol;
if( hue < 180.0f )
{
g = val;
b = mincol + (hue - 120.0f) * (val - mincol) / (240.0f - hue);
}
else
{
b = val;
g = mincol + (240.0f - hue) * (val - mincol) / (hue - 120.0f);
}
}
else
{
g = mincol;
if( hue < 300.0f )
{
b = val;
r = mincol + (hue - 240.0f) * (val - mincol) / (360.0f - hue);
}
else
{
r = val;
b = mincol + (360.0f - hue) * (val - mincol) / (hue - 240.0f);
}
}
palSrc[i*pal_size+0] = (byte)(r * 255);
palSrc[i*pal_size+1] = (byte)(g * 255);
palSrc[i*pal_size+2] = (byte)(b * 255);
}
}
void Image_PaletteTranslate( byte *palSrc, int top, int bottom, int pal_size )
{
byte dst[256], src[256];
int i;
pal_size = bound( 3, pal_size, 4 );
for( i = 0; i < 256; i++ )
src[i] = i;
memcpy( dst, src, 256 );
if( top < 128 )
{
// the artists made some backwards ranges. sigh.
memcpy( dst + SHIRT_HUE_START, src + top, 16 );
}
else
{
for( i = 0; i < 16; i++ )
dst[SHIRT_HUE_START+i] = src[top + 15 - i];
}
if( bottom < 128 )
{
memcpy( dst + PANTS_HUE_START, src + bottom, 16 );
}
else
{
for( i = 0; i < 16; i++ )
dst[PANTS_HUE_START + i] = src[bottom + 15 - i];
}
// last color isn't changed
for( i = 0; i < 255; i++ )
{
palSrc[i*pal_size+0] = palette_q1[dst[i]*3+0];
palSrc[i*pal_size+1] = palette_q1[dst[i]*3+1];
palSrc[i*pal_size+2] = palette_q1[dst[i]*3+2];
}
}
void Image_CopyParms( rgbdata_t *src )
{
Image_Reset();
image.width = src->width;
image.height = src->height;
image.type = src->type;
image.flags = src->flags;
image.size = src->size;
image.palette = src->palette; // may be NULL
memcpy( image.fogParams, src->fogParams, sizeof( image.fogParams ));
}
/*
============
Image_Copy8bitRGBA
NOTE: must call Image_GetPaletteXXX before used
============
*/
qboolean Image_Copy8bitRGBA( const byte *in, byte *out, int pixels )
{
int *iout = (int *)out;
byte *fin = (byte *)in;
byte *col;
int i;
if( !image.d_currentpal )
{
MsgDev( D_ERROR, "Image_Copy8bitRGBA: no palette set\n" );
return false;
}
if( !in )
{
MsgDev( D_ERROR, "Image_Copy8bitRGBA: no input image\n" );
return false;
}
// this is a base image with luma - clear luma pixels
if( image.flags & IMAGE_HAS_LUMA )
{
for( i = 0; i < image.width * image.height; i++ )
fin[i] = fin[i] < 224 ? fin[i] : 0;
}
// check for color
for( i = 0; i < 256; i++ )
{
col = (byte *)&image.d_currentpal[i];
if( col[0] != col[1] || col[1] != col[2] )
{
image.flags |= IMAGE_HAS_COLOR;
break;
}
}
while( pixels >= 8 )
{
iout[0] = image.d_currentpal[in[0]];
iout[1] = image.d_currentpal[in[1]];
iout[2] = image.d_currentpal[in[2]];
iout[3] = image.d_currentpal[in[3]];
iout[4] = image.d_currentpal[in[4]];
iout[5] = image.d_currentpal[in[5]];
iout[6] = image.d_currentpal[in[6]];
iout[7] = image.d_currentpal[in[7]];
in += 8;
iout += 8;
pixels -= 8;
}
if( pixels & 4 )
{
iout[0] = image.d_currentpal[in[0]];
iout[1] = image.d_currentpal[in[1]];
iout[2] = image.d_currentpal[in[2]];
iout[3] = image.d_currentpal[in[3]];
in += 4;
iout += 4;
}
if( pixels & 2 )
{
iout[0] = image.d_currentpal[in[0]];
iout[1] = image.d_currentpal[in[1]];
in += 2;
iout += 2;
}
if( pixels & 1 ) // last byte
iout[0] = image.d_currentpal[in[0]];
image.type = PF_RGBA_32; // update image type;
return true;
}
static void Image_Resample32LerpLine( const byte *in, byte *out, int inwidth, int outwidth )
{
int j, xi, oldx = 0, f, fstep, endx, lerp;
fstep = (int)(inwidth * 65536.0f / outwidth);
endx = (inwidth-1);
for( j = 0, f = 0; j < outwidth; j++, f += fstep )
{
xi = f>>16;
if( xi != oldx )
{
in += (xi - oldx) * 4;
oldx = xi;
}
if( xi < endx )
{
lerp = f & 0xFFFF;
*out++ = (byte)((((in[4] - in[0]) * lerp)>>16) + in[0]);
*out++ = (byte)((((in[5] - in[1]) * lerp)>>16) + in[1]);
*out++ = (byte)((((in[6] - in[2]) * lerp)>>16) + in[2]);
*out++ = (byte)((((in[7] - in[3]) * lerp)>>16) + in[3]);
}
else // last pixel of the line has no pixel to lerp to
{
*out++ = in[0];
*out++ = in[1];
*out++ = in[2];
*out++ = in[3];
}
}
}
static void Image_Resample24LerpLine( const byte *in, byte *out, int inwidth, int outwidth )
{
int j, xi, oldx = 0, f, fstep, endx, lerp;
fstep = (int)(inwidth * 65536.0f / outwidth);
endx = (inwidth-1);
for( j = 0, f = 0; j < outwidth; j++, f += fstep )
{
xi = f>>16;
if( xi != oldx )
{
in += (xi - oldx) * 3;
oldx = xi;
}
if( xi < endx )
{
lerp = f & 0xFFFF;
*out++ = (byte)((((in[3] - in[0]) * lerp)>>16) + in[0]);
*out++ = (byte)((((in[4] - in[1]) * lerp)>>16) + in[1]);
*out++ = (byte)((((in[5] - in[2]) * lerp)>>16) + in[2]);
}
else // last pixel of the line has no pixel to lerp to
{
*out++ = in[0];
*out++ = in[1];
*out++ = in[2];
}
}
}
void Image_Resample32Lerp( const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight )
{
const byte *inrow;
int i, j, r, yi, oldy = 0, f, fstep, lerp, endy = (inheight - 1);
int inwidth4 = inwidth * 4;
int outwidth4 = outwidth * 4;
byte *out = (byte *)outdata;
byte *resamplerow1;
byte *resamplerow2;
fstep = (int)(inheight * 65536.0f / outheight);
resamplerow1 = (byte *)Mem_Malloc( host.imagepool, outwidth * 4 * 2);
resamplerow2 = resamplerow1 + outwidth * 4;
inrow = (const byte *)indata;
Image_Resample32LerpLine( inrow, resamplerow1, inwidth, outwidth );
Image_Resample32LerpLine( inrow + inwidth4, resamplerow2, inwidth, outwidth );
for( i = 0, f = 0; i < outheight; i++, f += fstep )
{
yi = f>>16;
if( yi < endy )
{
lerp = f & 0xFFFF;
if( yi != oldy )
{
inrow = (byte *)indata + inwidth4 * yi;
if (yi == oldy+1) memcpy( resamplerow1, resamplerow2, outwidth4 );
else Image_Resample32LerpLine( inrow, resamplerow1, inwidth, outwidth );
Image_Resample32LerpLine( inrow + inwidth4, resamplerow2, inwidth, outwidth );
oldy = yi;
}
j = outwidth - 4;
while( j >= 0 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
LERPBYTE( 3);
LERPBYTE( 4);
LERPBYTE( 5);
LERPBYTE( 6);
LERPBYTE( 7);
LERPBYTE( 8);
LERPBYTE( 9);
LERPBYTE(10);
LERPBYTE(11);
LERPBYTE(12);
LERPBYTE(13);
LERPBYTE(14);
LERPBYTE(15);
out += 16;
resamplerow1 += 16;
resamplerow2 += 16;
j -= 4;
}
if( j & 2 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
LERPBYTE( 3);
LERPBYTE( 4);
LERPBYTE( 5);
LERPBYTE( 6);
LERPBYTE( 7);
out += 8;
resamplerow1 += 8;
resamplerow2 += 8;
}
if( j & 1 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
LERPBYTE( 3);
out += 4;
resamplerow1 += 4;
resamplerow2 += 4;
}
resamplerow1 -= outwidth4;
resamplerow2 -= outwidth4;
}
else
{
if( yi != oldy )
{
inrow = (byte *)indata + inwidth4*yi;
if( yi == oldy + 1 ) memcpy( resamplerow1, resamplerow2, outwidth4 );
else Image_Resample32LerpLine( inrow, resamplerow1, inwidth, outwidth);
oldy = yi;
}
memcpy( out, resamplerow1, outwidth4 );
}
}
Mem_Free( resamplerow1 );
}
void Image_Resample32Nolerp( const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight )
{
int i, j;
uint frac, fracstep;
int *inrow, *out = (int *)outdata; // relies on int being 4 bytes
fracstep = inwidth * 0x10000 / outwidth;
for( i = 0; i < outheight; i++)
{
inrow = (int *)indata + inwidth * (i * inheight / outheight);
frac = fracstep>>1;
j = outwidth - 4;
while( j >= 0 )
{
out[0] = inrow[frac >> 16];frac += fracstep;
out[1] = inrow[frac >> 16];frac += fracstep;
out[2] = inrow[frac >> 16];frac += fracstep;
out[3] = inrow[frac >> 16];frac += fracstep;
out += 4;
j -= 4;
}
if( j & 2 )
{
out[0] = inrow[frac >> 16];frac += fracstep;
out[1] = inrow[frac >> 16];frac += fracstep;
out += 2;
}
if( j & 1 )
{
out[0] = inrow[frac >> 16];frac += fracstep;
out += 1;
}
}
}
void Image_Resample24Lerp( const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight )
{
const byte *inrow;
int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight - 1);
int inwidth3 = inwidth * 3;
int outwidth3 = outwidth * 3;
byte *out = (byte *)outdata;
byte *resamplerow1;
byte *resamplerow2;
fstep = (int)(inheight * 65536.0f / outheight);
resamplerow1 = (byte *)Mem_Malloc( host.imagepool, outwidth * 3 * 2 );
resamplerow2 = resamplerow1 + outwidth*3;
inrow = (const byte *)indata;
oldy = 0;
Image_Resample24LerpLine( inrow, resamplerow1, inwidth, outwidth );
Image_Resample24LerpLine( inrow + inwidth3, resamplerow2, inwidth, outwidth );
for( i = 0, f = 0; i < outheight; i++, f += fstep )
{
yi = f>>16;
if( yi < endy )
{
lerp = f & 0xFFFF;
if( yi != oldy )
{
inrow = (byte *)indata + inwidth3 * yi;
if( yi == oldy + 1) memcpy( resamplerow1, resamplerow2, outwidth3 );
else Image_Resample24LerpLine( inrow, resamplerow1, inwidth, outwidth );
Image_Resample24LerpLine( inrow + inwidth3, resamplerow2, inwidth, outwidth );
oldy = yi;
}
j = outwidth - 4;
while( j >= 0 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
LERPBYTE( 3);
LERPBYTE( 4);
LERPBYTE( 5);
LERPBYTE( 6);
LERPBYTE( 7);
LERPBYTE( 8);
LERPBYTE( 9);
LERPBYTE(10);
LERPBYTE(11);
out += 12;
resamplerow1 += 12;
resamplerow2 += 12;
j -= 4;
}
if( j & 2 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
LERPBYTE( 3);
LERPBYTE( 4);
LERPBYTE( 5);
out += 6;
resamplerow1 += 6;
resamplerow2 += 6;
}
if( j & 1 )
{
LERPBYTE( 0);
LERPBYTE( 1);
LERPBYTE( 2);
out += 3;
resamplerow1 += 3;
resamplerow2 += 3;
}
resamplerow1 -= outwidth3;
resamplerow2 -= outwidth3;
}
else
{
if( yi != oldy )
{
inrow = (byte *)indata + inwidth3*yi;
if( yi == oldy + 1) memcpy( resamplerow1, resamplerow2, outwidth3 );
else Image_Resample24LerpLine( inrow, resamplerow1, inwidth, outwidth );
oldy = yi;
}
memcpy( out, resamplerow1, outwidth3 );
}
}
Mem_Free( resamplerow1 );
}
void Image_Resample24Nolerp( const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight )
{
uint frac, fracstep;
int i, j, f, inwidth3 = inwidth * 3;
byte *inrow, *out = (byte *)outdata;
fracstep = inwidth * 0x10000 / outwidth;
for( i = 0; i < outheight; i++)
{
inrow = (byte *)indata + inwidth3 * (i * inheight / outheight);
frac = fracstep>>1;
j = outwidth - 4;
while( j >= 0 )
{
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
j -= 4;
}
if( j & 2 )
{
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
out += 2;
}
if( j & 1 )
{
f = (frac >> 16)*3;
*out++ = inrow[f+0];
*out++ = inrow[f+1];
*out++ = inrow[f+2];
frac += fracstep;
out += 1;
}
}
}
void Image_Resample8Nolerp( const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight )
{
int i, j;
byte *in, *inrow;
uint frac, fracstep;
byte *out = (byte *)outdata;
in = (byte *)indata;
fracstep = inwidth * 0x10000 / outwidth;
for( i = 0; i < outheight; i++, out += outwidth )
{
inrow = in + inwidth*(i*inheight/outheight);
frac = fracstep>>1;
for( j = 0; j < outwidth; j++ )
{
out[j] = inrow[frac>>16];
frac += fracstep;
}
}
}
/*
================
Image_Resample
================
*/
byte *Image_ResampleInternal( const void *indata, int inwidth, int inheight, int outwidth, int outheight, int type, qboolean *resampled )
{
qboolean quality = Image_CheckFlag( IL_USE_LERPING );
// nothing to resample ?
if( inwidth == outwidth && inheight == outheight )
{
*resampled = false;
return (byte *)indata;
}
// alloc new buffer
switch( type )
{
case PF_INDEXED_24:
case PF_INDEXED_32:
image.tempbuffer = (byte *)Mem_Realloc( host.imagepool, image.tempbuffer, outwidth * outheight );
Image_Resample8Nolerp( indata, inwidth, inheight, image.tempbuffer, outwidth, outheight );
break;
case PF_RGB_24:
case PF_BGR_24:
image.tempbuffer = (byte *)Mem_Realloc( host.imagepool, image.tempbuffer, outwidth * outheight * 3 );
if( quality ) Image_Resample24Lerp( indata, inwidth, inheight, image.tempbuffer, outwidth, outheight );
else Image_Resample24Nolerp( indata, inwidth, inheight, image.tempbuffer, outwidth, outheight );
break;
case PF_RGBA_32:
case PF_BGRA_32:
image.tempbuffer = (byte *)Mem_Realloc( host.imagepool, image.tempbuffer, outwidth * outheight * 4 );
if( quality ) Image_Resample32Lerp( indata, inwidth, inheight, image.tempbuffer, outwidth, outheight );
else Image_Resample32Nolerp( indata, inwidth, inheight, image.tempbuffer, outwidth, outheight );
break;
default:
MsgDev( D_WARN, "Image_Resample: unsupported format %s\n", PFDesc[type].name );
*resampled = false;
return (byte *)indata;
}
*resampled = true;
return image.tempbuffer;
}
/*
================
Image_Flip
================
*/
byte *Image_FlipInternal( const byte *in, word *srcwidth, word *srcheight, int type, int flags )
{
int i, x, y;
word width = *srcwidth;
word height = *srcheight;
int samples = PFDesc[type].bpp;
qboolean flip_x = ( flags & IMAGE_FLIP_X ) ? true : false;
qboolean flip_y = ( flags & IMAGE_FLIP_Y ) ? true : false;
qboolean flip_i = ( flags & IMAGE_ROT_90 ) ? true : false;
int row_inc = ( flip_y ? -samples : samples ) * width;
int col_inc = ( flip_x ? -samples : samples );
int row_ofs = ( flip_y ? ( height - 1 ) * width * samples : 0 );
int col_ofs = ( flip_x ? ( width - 1 ) * samples : 0 );
const byte *p, *line;
byte *out;
// nothing to process
if( !FBitSet( flags, IMAGE_FLIP_X|IMAGE_FLIP_Y|IMAGE_ROT_90 ))
return (byte *)in;
switch( type )
{
case PF_INDEXED_24:
case PF_INDEXED_32:
case PF_RGB_24:
case PF_BGR_24:
case PF_RGBA_32:
case PF_BGRA_32:
image.tempbuffer = Mem_Realloc( host.imagepool, image.tempbuffer, width * height * samples );
break;
default:
MsgDev( D_WARN, "Image_Flip: unsupported format %s\n", PFDesc[type].name );
return (byte *)in;
}
out = image.tempbuffer;
if( flip_i )
{
for( x = 0, line = in + col_ofs; x < width; x++, line += col_inc )
for( y = 0, p = line + row_ofs; y < height; y++, p += row_inc, out += samples )
for( i = 0; i < samples; i++ )
out[i] = p[i];
}
else
{
for( y = 0, line = in + row_ofs; y < height; y++, line += row_inc )
for( x = 0, p = line + col_ofs; x < width; x++, p += col_inc, out += samples )
for( i = 0; i < samples; i++ )
out[i] = p[i];
}
// update dims
if( FBitSet( flags, IMAGE_ROT_90 ))
{
*srcwidth = height;
*srcheight = width;
}
else
{
*srcwidth = width;
*srcheight = height;
}
return image.tempbuffer;
}
byte *Image_CreateLumaInternal( byte *fin, int width, int height, int type, int flags )
{
byte *out;
int i;
if( !FBitSet( flags, IMAGE_HAS_LUMA ))
return (byte *)fin;
switch( type )
{
case PF_INDEXED_24:
case PF_INDEXED_32:
out = image.tempbuffer = Mem_Realloc( host.imagepool, image.tempbuffer, width * height );
for( i = 0; i < width * height; i++ )
*out++ = fin[i] >= 224 ? fin[i] : 0;
break;
default:
// another formats does ugly result :(
Con_Printf( S_ERROR "Image_MakeLuma: unsupported format %s\n", PFDesc[type].name );
return (byte *)fin;
}
return image.tempbuffer;
}
qboolean Image_AddIndexedImageToPack( const byte *in, int width, int height )
{
int mipsize = width * height;
qboolean expand_to_rgba = true;
if( Image_CheckFlag( IL_KEEP_8BIT ))
expand_to_rgba = false;
else if( FBitSet( image.flags, IMAGE_HAS_LUMA|IMAGE_QUAKESKY ))
expand_to_rgba = false;
image.size = mipsize;
if( expand_to_rgba ) image.size *= 4;
else Image_CopyPalette32bit();
// reallocate image buffer
image.rgba = Mem_Malloc( host.imagepool, image.size );
if( !expand_to_rgba ) memcpy( image.rgba, in, image.size );
else if( !Image_Copy8bitRGBA( in, image.rgba, mipsize ))
return false; // probably pallette not installed
return true;
}
/*
=============
Image_Decompress
force to unpack any image to 32-bit buffer
=============
*/
qboolean Image_Decompress( const byte *data )
{
byte *fin, *fout;
int i, size;
if( !data ) return false;
fin = (byte *)data;
size = image.width * image.height * 4;
image.tempbuffer = Mem_Realloc( host.imagepool, image.tempbuffer, size );
fout = image.tempbuffer;
switch( PFDesc[image.type].format )
{
case PF_INDEXED_24:
if( image.flags & IMAGE_HAS_ALPHA )
{
if( image.flags & IMAGE_COLORINDEX )
Image_GetPaletteLMP( image.palette, LUMP_GRADIENT );
else Image_GetPaletteLMP( image.palette, LUMP_MASKED );
}
else Image_GetPaletteLMP( image.palette, LUMP_NORMAL );
// intentional falltrough
case PF_INDEXED_32:
if( !image.d_currentpal ) image.d_currentpal = (uint *)image.palette;
if( !Image_Copy8bitRGBA( fin, fout, image.width * image.height ))
return false;
break;
case PF_BGR_24:
for (i = 0; i < image.width * image.height; i++ )
{
fout[(i<<2)+0] = fin[i*3+2];
fout[(i<<2)+1] = fin[i*3+1];
fout[(i<<2)+2] = fin[i*3+0];
fout[(i<<2)+3] = 255;
}
break;
case PF_RGB_24:
for (i = 0; i < image.width * image.height; i++ )
{
fout[(i<<2)+0] = fin[i*3+0];
fout[(i<<2)+1] = fin[i*3+1];
fout[(i<<2)+2] = fin[i*3+2];
fout[(i<<2)+3] = 255;
}
break;
case PF_BGRA_32:
for( i = 0; i < image.width * image.height; i++ )
{
fout[i*4+0] = fin[i*4+2];
fout[i*4+1] = fin[i*4+1];
fout[i*4+2] = fin[i*4+0];
fout[i*4+3] = fin[i*4+3];
}
break;
case PF_RGBA_32:
// fast default case
memcpy( fout, fin, size );
break;
default: return false;
}
// set new size
image.size = size;
return true;
}
rgbdata_t *Image_DecompressInternal( rgbdata_t *pic )
{
// quick case to reject unneeded conversions
if( pic->type == PF_RGBA_32 )
return pic;
Image_CopyParms( pic );
image.size = image.ptr = 0;
Image_Decompress( pic->buffer );
// now we can change type to RGBA
pic->type = PF_RGBA_32;
pic->buffer = Mem_Realloc( host.imagepool, pic->buffer, image.size );
memcpy( pic->buffer, image.tempbuffer, image.size );
if( pic->palette ) Mem_Free( pic->palette );
pic->flags = image.flags;
pic->palette = NULL;
return pic;
}
rgbdata_t *Image_LightGamma( rgbdata_t *pic )
{
byte *in = (byte *)pic->buffer;
int i;
if( pic->type != PF_RGBA_32 )
return pic;
for( i = 0; i < pic->width * pic->height; i++, in += 4 )
{
in[0] = LightToTexGamma( in[0] );
in[1] = LightToTexGamma( in[1] );
in[2] = LightToTexGamma( in[2] );
}
return pic;
}
qboolean Image_RemapInternal( rgbdata_t *pic, int topColor, int bottomColor )
{
if( !pic->palette )
{
MsgDev( D_ERROR, "Image_Remap: palette is missed\n" );
return false;
}
switch( pic->type )
{
case PF_INDEXED_24:
break;
case PF_INDEXED_32:
Image_ConvertPalTo24bit( pic );
break;
default:
MsgDev( D_ERROR, "Image_Remap: unsupported format %s\n", PFDesc[pic->type].name );
return false;
}
if( Image_ComparePalette( pic->palette ) == PAL_QUAKE1 )
{
Image_PaletteTranslate( pic->palette, topColor * 16, bottomColor * 16, 3 );
}
else
{
// g-cont. preview images has a swapped top and bottom colors. I don't know why.
Image_PaletteHueReplace( pic->palette, topColor, SUIT_HUE_START, SUIT_HUE_END, 3 );
Image_PaletteHueReplace( pic->palette, bottomColor, PLATE_HUE_START, PLATE_HUE_END, 3 );
}
return true;
}
/*
==================
Image_ApplyFilter
Applies a 5 x 5 filtering matrix to the texture, then runs it through a simulated OpenGL texture environment
blend with the original data to derive a new texture. Freaky, funky, and *f--king* *fantastic*. You can do
reasonable enough "fake bumpmapping" with this baby...
Filtering algorithm from http://www.student.kuleuven.ac.be/~m0216922/CG/filtering.html
All credit due
==================
*/
qboolean Image_ApplyFilter( rgbdata_t *pic, int filter, float factor, float bias, flFlags_t flags, GLenum blendFunc )
{
int i, x, y;
uint *fin, *fout;
size_t size;
// first expand the image into 32-bit buffer
pic = Image_DecompressInternal( pic );
size = image.width * image.height * 4;
image.tempbuffer = Mem_Realloc( host.imagepool, image.tempbuffer, size );
fout = (uint *)image.tempbuffer;
fin = (uint *)pic->buffer;
for( x = 0; x < image.width; x++ )
{
for( y = 0; y < image.height; y++ )
{
vec3_t vout = { 0.0f, 0.0f, 0.0f };
int pos_x, pos_y;
for( pos_x = 0; pos_x < FILTER_SIZE; pos_x++ )
{
for( pos_y = 0; pos_y < FILTER_SIZE; pos_y++ )
{
int img_x = (x - (FILTER_SIZE / 2) + pos_x + image.width) % image.width;
int img_y = (y - (FILTER_SIZE / 2) + pos_y + image.height) % image.height;
// casting's a unary operation anyway, so the othermost set of brackets in the left part
// of the rvalue should not be necessary... but i'm paranoid when it comes to C...
vout[0] += ((float)((byte *)&fin[img_y * image.width + img_x])[0]) * FILTER[filter][pos_x][pos_y];
vout[1] += ((float)((byte *)&fin[img_y * image.width + img_x])[1]) * FILTER[filter][pos_x][pos_y];
vout[2] += ((float)((byte *)&fin[img_y * image.width + img_x])[2]) * FILTER[filter][pos_x][pos_y];
}
}
// multiply by factor, add bias, and clamp
for( i = 0; i < 3; i++ )
{
vout[i] *= factor;
vout[i] += bias;
vout[i] = bound( 0.0f, vout[i], 255.0f );
}
if( flags & FILTER_GRAYSCALE )
{
// NTSC greyscale conversion standard
float avg = (vout[0] * 30.0f + vout[1] * 59.0f + vout[2] * 11.0f) / 100.0f;
// divide by 255 so GL operations work as expected
vout[0] = avg / 255.0f;
vout[1] = avg / 255.0f;
vout[2] = avg / 255.0f;
}
// write to temp - first, write data in (to get the alpha channel quickly and
// easily, which will be left well alone by this particular operation...!)
fout[y * image.width + x] = fin[y * image.width + x];
// now write in each element, applying the blend operator. blend
// operators are based on standard OpenGL TexEnv modes, and the
// formulas are derived from the OpenGL specs (http://www.opengl.org).
for( i = 0; i < 3; i++ )
{
// divide by 255 so GL operations work as expected
float src = ((float)((byte *)&fin[y * image.width + x])[i]) / 255.0f;
float tmp;
switch( blendFunc )
{
case GL_ADD:
tmp = vout[i] + src;
break;
case GL_BLEND:
// default is FUNC_ADD here
// CsS + CdD works out as Src * Dst * 2
tmp = vout[i] * src * 2.0f;
break;
case GL_DECAL:
// same as GL_REPLACE unless there's alpha, which we ignore for this
case GL_REPLACE:
tmp = vout[i];
break;
case GL_ADD_SIGNED:
tmp = (vout[i] + src) - 0.5f;
break;
case GL_MODULATE:
default: // same as default
tmp = vout[i] * src;
break;
}
// multiply back by 255 to get the proper byte scale
tmp *= 255.0f;
// bound the temp target again now, cos the operation may have thrown it out
tmp = bound( 0.0f, tmp, 255.0f );
// and copy it in
((byte *)&fout[y * image.width + x])[i] = (byte)tmp;
}
}
}
// copy result back
memcpy( fin, fout, size );
return true;
}
qboolean Image_Process( rgbdata_t **pix, int width, int height, uint flags, imgfilter_t *filter )
{
rgbdata_t *pic = *pix;
qboolean result = true;
byte *out;
// check for buffers
if( !pic || !pic->buffer )
{
MsgDev( D_WARN, "Image_Process: NULL image\n" );
image.force_flags = 0;
return false;
}
if( !flags && !filter )
{
// clear any force flags
image.force_flags = 0;
return false; // no operation specfied
}
if( FBitSet( flags, IMAGE_MAKE_LUMA ))
{
out = Image_CreateLumaInternal( pic->buffer, pic->width, pic->height, pic->type, pic->flags );
if( pic->buffer != out ) memcpy( pic->buffer, image.tempbuffer, pic->size );
ClearBits( pic->flags, IMAGE_HAS_LUMA );
}
if( flags & IMAGE_REMAP )
{
// NOTE: user should keep copy of indexed image manually for new changes
if( Image_RemapInternal( pic, width, height ))
pic = Image_DecompressInternal( pic );
}
// update format to RGBA if any
if( flags & IMAGE_FORCE_RGBA ) pic = Image_DecompressInternal( pic );
if( flags & IMAGE_LIGHTGAMMA ) pic = Image_LightGamma( pic );
if( filter ) Image_ApplyFilter( pic, filter->filter, filter->factor, filter->bias, filter->flags, filter->blendFunc );
out = Image_FlipInternal( pic->buffer, &pic->width, &pic->height, pic->type, flags );
if( pic->buffer != out ) memcpy( pic->buffer, image.tempbuffer, pic->size );
if( FBitSet( flags, IMAGE_RESAMPLE ) && width > 0 && height > 0 )
{
int w = bound( 1, width, IMAGE_MAXWIDTH ); // 1 - 4096
int h = bound( 1, height, IMAGE_MAXHEIGHT); // 1 - 4096
qboolean resampled = false;
out = Image_ResampleInternal((uint *)pic->buffer, pic->width, pic->height, w, h, pic->type, &resampled );
if( resampled ) // resampled or filled
{
MsgDev( D_NOTE, "Image_Resample: from[%d x %d] to [%d x %d]\n", pic->width, pic->height, w, h );
pic->width = w, pic->height = h;
pic->size = w * h * PFDesc[pic->type].bpp;
Mem_Free( pic->buffer ); // free original image buffer
pic->buffer = Image_Copy( pic->size ); // unzone buffer (don't touch image.tempbuffer)
}
else
{
// not a resampled or filled
result = false;
}
}
// quantize image
if( FBitSet( flags, IMAGE_QUANTIZE ))
pic = Image_Quantize( pic );
*pix = pic;
// clear any force flags
image.force_flags = 0;
return result;
}