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quakespasm/Quake/gl_texmgr.c

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/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2007-2008 Kristian Duske
Copyright (C) 2010-2014 QuakeSpasm developers
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 2
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//gl_texmgr.c -- fitzquake's texture manager. manages opengl texture images
#include "quakedef.h"
const int gl_solid_format = 3;
const int gl_alpha_format = 4;
static cvar_t gl_texturemode = {"gl_texturemode", "", CVAR_ARCHIVE};
static cvar_t gl_texture_anisotropy = {"gl_texture_anisotropy", "1", CVAR_ARCHIVE};
static cvar_t gl_max_size = {"gl_max_size", "0", CVAR_NONE};
static cvar_t gl_picmip = {"gl_picmip", "0", CVAR_NONE};
static GLint gl_hardware_maxsize;
static int numgltextures;
static gltexture_t *active_gltextures, *free_gltextures;
gltexture_t *notexture, *nulltexture;
unsigned int d_8to24table[256];
unsigned int d_8to24table_fbright[256];
unsigned int d_8to24table_fbright_fence[256];
unsigned int d_8to24table_nobright[256];
unsigned int d_8to24table_nobright_fence[256];
unsigned int d_8to24table_conchars[256];
unsigned int d_8to24table_shirt[256];
unsigned int d_8to24table_pants[256];
static struct
{
const char *formatname; //full name
const char *mipextname; //four chars
int internalformat; //opengl's internal format (mostly sized formats)
int format; //for non-compressed formats (opengl's transcoding)
int type; //for non-compressed formats (opengl's transcoding)
int blockbytes; //bytes per block
int blockwidth; //width of a block (or 1 for non-block formats)
int blockheight; //height of a block (or 1 for non-block formats)
qboolean *supported; //pointer to some boolean that says whether some opengl extension is actually support or not.
} compressedformats[] =
{
{NULL}, //SRC_INDEXED
{NULL}, //SRC_LIGHTMAP
{NULL}, //SRC_RGBA
{NULL}, //SRC_EXTERNAL
{"RGBA8", "RGBA", GL_RGBA,GL_RGBA,GL_UNSIGNED_INT_8_8_8_8_REV, 4, 1, 1, NULL},
{"RGB8", "RGB", GL_RGB,GL_RGB,GL_UNSIGNED_BYTE, 3, 1, 1, NULL},
{"RGB565", "565", GL_RGB565,GL_RGB,GL_UNSIGNED_SHORT_5_6_5, 2, 1, 1, NULL},
{"RGBA4444", "4444", GL_RGBA4,GL_RGBA,GL_UNSIGNED_SHORT_4_4_4_4, 2, 1, 1, NULL},
{"RGBA5551", "5551", GL_RGB5_A1,GL_RGBA,GL_UNSIGNED_SHORT_5_5_5_1, 2, 1, 1, NULL},
{"L8", "LUM8", GL_LUMINANCE8,GL_LUMINANCE,GL_UNSIGNED_BYTE, 1, 1, 1, NULL},
{"E5BGR9", "EXP5", GL_RGB9_E5,GL_RGB,GL_UNSIGNED_INT_5_9_9_9_REV, 4, 1, 1, &gl_texture_astc},
{"BC1_RGBA", "BC1", GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,0,0, 8, 4, 4, &gl_texture_s3tc},
{"BC2_RGBA", "BC2", GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,0,0, 16, 4, 4, &gl_texture_s3tc},
{"BC3_RGBA", "BC3", GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,0,0, 16, 4, 4, &gl_texture_s3tc},
{"BC4_R", "BC4", GL_COMPRESSED_RED_RGTC1,0,0, 8, 4, 4, &gl_texture_rgtc},
{"BC5_RG", "BC5", GL_COMPRESSED_RG_RGTC2,0,0, 16, 4, 4, &gl_texture_rgtc},
{"BC6_RGB_UFLOAT","BC6",GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT,0,0, 16, 4, 4, &gl_texture_bptc},
{"BC7_RGBA", "BC7", GL_COMPRESSED_RGBA_BPTC_UNORM,0,0, 16, 4, 4, &gl_texture_bptc},
{"ETC1_RGB8", "ETC1", GL_COMPRESSED_RGB8_ETC2,0,0, 8, 4, 4, &gl_texture_etc2},
{"ETC2_RGB8", "ETC2", GL_COMPRESSED_RGB8_ETC2,0,0, 8, 4, 4, &gl_texture_etc2},
{"ETC2_RGB8A1", "ETCP", GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,0,0, 8, 4, 4, &gl_texture_etc2},
{"ETC2_RGB8A8", "ETCA", GL_COMPRESSED_RGBA8_ETC2_EAC,0,0, 16, 4, 4, &gl_texture_etc2},
{"ASTC_4X4", "AST4", GL_COMPRESSED_RGBA_ASTC_4x4_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_5X4", "AS54", GL_COMPRESSED_RGBA_ASTC_5x4_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_5X5", "AST5", GL_COMPRESSED_RGBA_ASTC_5x5_KHR,0,0, 16, 5, 5, &gl_texture_astc},
{"ASTC_6X5", "AS65", GL_COMPRESSED_RGBA_ASTC_6x5_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_6X6", "AST6", GL_COMPRESSED_RGBA_ASTC_6x6_KHR,0,0, 16, 6, 6, &gl_texture_astc},
{"ASTC_8X5", "AS85", GL_COMPRESSED_RGBA_ASTC_8x5_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_8X6", "AS86", GL_COMPRESSED_RGBA_ASTC_8x6_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_8X8", "AST8", GL_COMPRESSED_RGBA_ASTC_8x8_KHR,0,0, 16, 8, 8, &gl_texture_astc},
{"ASTC_10X5", "AS05", GL_COMPRESSED_RGBA_ASTC_10x5_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_10X6", "AS06", GL_COMPRESSED_RGBA_ASTC_10x6_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_10X8", "AS08", GL_COMPRESSED_RGBA_ASTC_10x8_KHR,0,0, 16, 4, 4, &gl_texture_astc},
{"ASTC_10X10", "AST0", GL_COMPRESSED_RGBA_ASTC_10x10_KHR,0,0, 16, 8, 8, &gl_texture_astc},
{"ASTC_12X10", "AST0", GL_COMPRESSED_RGBA_ASTC_12x10_KHR,0,0, 16, 8, 8, &gl_texture_astc},
{"ASTC_12X12", "AST2", GL_COMPRESSED_RGBA_ASTC_12x12_KHR,0,0, 16, 8, 8, &gl_texture_astc},
};
/*
================================================================================
COMMANDS
================================================================================
*/
typedef struct
{
int magfilter;
int minfilter;
const char *name2, *name1;
} glmode_t;
static glmode_t glmodes[] = {
{GL_NEAREST, GL_NEAREST, "n.n", "GL_NEAREST"},
{GL_NEAREST, GL_NEAREST_MIPMAP_NEAREST, "nnn", "GL_NEAREST_MIPMAP_NEAREST"},
{GL_NEAREST, GL_NEAREST_MIPMAP_LINEAR, "nln", "GL_NEAREST_MIPMAP_LINEAR"},
{GL_LINEAR, GL_LINEAR, "l.l", "GL_LINEAR"},
{GL_LINEAR, GL_LINEAR_MIPMAP_NEAREST, "lnl", "GL_LINEAR_MIPMAP_NEAREST"},
{GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, "lll", "GL_LINEAR_MIPMAP_LINEAR"},
{GL_NEAREST, GL_LINEAR, "n.l", NULL},
{GL_NEAREST, GL_LINEAR_MIPMAP_NEAREST, "nnl", NULL},
{GL_NEAREST, GL_LINEAR_MIPMAP_LINEAR, "nll", NULL},
{GL_LINEAR, GL_NEAREST, "l.n", NULL},
{GL_LINEAR, GL_NEAREST_MIPMAP_NEAREST, "lnn", NULL},
{GL_LINEAR, GL_NEAREST_MIPMAP_LINEAR, "lln", NULL},
};
#define NUM_GLMODES (int)(sizeof(glmodes)/sizeof(glmodes[0]))
static int glmode_idx = NUM_GLMODES - 1; /* trilinear */
/*
===============
TexMgr_DescribeTextureModes_f -- report available texturemodes
===============
*/
static void TexMgr_DescribeTextureModes_f (void)
{
int i;
for (i = 0; i < NUM_GLMODES; i++)
Con_SafePrintf (" %2i: %s\n", i + 1, glmodes[i].name1?glmodes[i].name1:glmodes[i].name2);
Con_Printf ("%i modes\n", i);
}
/*
===============
TexMgr_SetFilterModes
===============
*/
static void TexMgr_SetFilterModes (gltexture_t *glt)
{
GL_Bind (glt);
if (glt->flags & TEXPREF_NEAREST)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
else if (glt->flags & TEXPREF_LINEAR)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
else if (glt->flags & TEXPREF_MIPMAP)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, glmodes[glmode_idx].magfilter);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, glmodes[glmode_idx].minfilter);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_anisotropy.value);
}
else
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, glmodes[glmode_idx].magfilter);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, glmodes[glmode_idx].magfilter);
}
}
/*
===============
TexMgr_TextureMode_f -- called when gl_texturemode changes
===============
*/
static void TexMgr_TextureMode_f (cvar_t *var)
{
gltexture_t *glt;
int i;
for (i = 0; i < NUM_GLMODES; i++)
{
if ((glmodes[i].name1&&!Q_strcmp (glmodes[i].name1, gl_texturemode.string)) ||
(glmodes[i].name2&&!Q_strcmp (glmodes[i].name2, gl_texturemode.string)))
{
if (glmode_idx != i)
{
glmode_idx = i;
for (glt = active_gltextures; glt; glt = glt->next)
TexMgr_SetFilterModes (glt);
Sbar_Changed (); //sbar graphics need to be redrawn with new filter mode
//FIXME: warpimages need to be redrawn, too.
}
return;
}
}
for (i = 0; i < NUM_GLMODES; i++)
{
if ((glmodes[i].name1&&!q_strcasecmp (glmodes[i].name1, gl_texturemode.string)) ||
(glmodes[i].name2&&!q_strcasecmp (glmodes[i].name2, gl_texturemode.string)))
{
Cvar_SetQuick (&gl_texturemode, glmodes[i].name1?glmodes[i].name1:glmodes[i].name2);
return;
}
}
i = atoi(gl_texturemode.string);
if (i >= 1 && i <= NUM_GLMODES)
{
Cvar_SetQuick (&gl_texturemode, glmodes[i-1].name1);
return;
}
Con_Printf ("\"%s\" is not a valid texturemode\n", gl_texturemode.string);
Cvar_SetQuick (&gl_texturemode, glmodes[glmode_idx].name1?glmodes[glmode_idx].name1:glmodes[glmode_idx].name2);
}
/*
===============
TexMgr_Anisotropy_f -- called when gl_texture_anisotropy changes
===============
*/
static void TexMgr_Anisotropy_f (cvar_t *var)
{
if (gl_texture_anisotropy.value < 1)
{
Cvar_SetQuick (&gl_texture_anisotropy, "1");
}
else if (gl_texture_anisotropy.value > gl_max_anisotropy)
{
Cvar_SetValueQuick (&gl_texture_anisotropy, gl_max_anisotropy);
}
else
{
gltexture_t *glt;
for (glt = active_gltextures; glt; glt = glt->next)
{
/* TexMgr_SetFilterModes (glt);*/
if (glt->flags & TEXPREF_MIPMAP) {
GL_Bind (glt);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, glmodes[glmode_idx].magfilter);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, glmodes[glmode_idx].minfilter);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_texture_anisotropy.value);
}
}
}
}
/*
===============
TexMgr_Imagelist_f -- report loaded textures
===============
*/
static void TexMgr_Imagelist_f (void)
{
float mb;
float texels = 0;
gltexture_t *glt;
for (glt = active_gltextures; glt; glt = glt->next)
{
Con_SafePrintf (" %4i x%4i %s\n", glt->width, glt->height, glt->name);
if (glt->flags & TEXPREF_MIPMAP)
texels += glt->width * glt->height * 4.0f / 3.0f;
else
texels += (glt->width * glt->height);
}
mb = texels * (Cvar_VariableValue("vid_bpp") / 8.0f) / 0x100000;
Con_Printf ("%i textures %i pixels %1.1f megabytes\n", numgltextures, (int)texels, mb);
}
/*
===============
TexMgr_Imagedump_f -- dump all current textures to TGA files
===============
*/
static void TexMgr_Imagedump_f (void)
{
char tganame[MAX_OSPATH], tempname[MAX_OSPATH], dirname[MAX_OSPATH];
gltexture_t *glt;
byte *buffer;
char *c;
//create directory
q_snprintf(dirname, sizeof(dirname), "%s/imagedump", com_gamedir);
Sys_mkdir (dirname);
//loop through textures
for (glt = active_gltextures; glt; glt = glt->next)
{
q_strlcpy (tempname, glt->name, sizeof(tempname));
while ( (c = strchr(tempname, ':')) ) *c = '_';
while ( (c = strchr(tempname, '/')) ) *c = '_';
while ( (c = strchr(tempname, '*')) ) *c = '_';
q_snprintf(tganame, sizeof(tganame), "imagedump/%s.tga", tempname);
GL_Bind (glt);
glPixelStorei (GL_PACK_ALIGNMENT, 1);/* for widths that aren't a multiple of 4 */
if (glt->flags & TEXPREF_ALPHA)
{
buffer = (byte *) malloc(glt->width*glt->height*4);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
Image_WriteTGA (tganame, buffer, glt->width, glt->height, 32, true);
}
else
{
buffer = (byte *) malloc(glt->width*glt->height*3);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, buffer);
Image_WriteTGA (tganame, buffer, glt->width, glt->height, 24, true);
}
free (buffer);
}
Con_Printf ("dumped %i textures to %s\n", numgltextures, dirname);
}
/*
===============
TexMgr_FrameUsage -- report texture memory usage for this frame
===============
*/
float TexMgr_FrameUsage (void)
{
float mb;
float texels = 0;
gltexture_t *glt;
for (glt = active_gltextures; glt; glt = glt->next)
{
if (glt->visframe == r_framecount)
{
if (glt->flags & TEXPREF_MIPMAP)
texels += glt->width * glt->height * 4.0f / 3.0f;
else
texels += (glt->width * glt->height);
}
}
mb = texels * (Cvar_VariableValue("vid_bpp") / 8.0f) / 0x100000;
return mb;
}
/*
================================================================================
TEXTURE MANAGER
================================================================================
*/
/*
================
TexMgr_FindTexture
================
*/
gltexture_t *TexMgr_FindTexture (qmodel_t *owner, const char *name)
{
gltexture_t *glt;
if (name)
{
for (glt = active_gltextures; glt; glt = glt->next)
{
if (glt->owner == owner && !strcmp (glt->name, name))
return glt;
}
}
return NULL;
}
/*
================
TexMgr_NewTexture
================
*/
gltexture_t *TexMgr_NewTexture (void)
{
gltexture_t *glt;
if (!free_gltextures)
{
int i, newtexturecount = 64;
free_gltextures = (gltexture_t *) malloc (newtexturecount * sizeof(gltexture_t));
for (i = 0; i < newtexturecount - 1; i++)
free_gltextures[i].next = &free_gltextures[i+1];
free_gltextures[i].next = NULL;
}
glt = free_gltextures;
free_gltextures = glt->next;
glt->next = active_gltextures;
active_gltextures = glt;
glGenTextures(1, &glt->texnum);
numgltextures++;
return glt;
}
static void GL_DeleteTexture (gltexture_t *texture);
//ericw -- workaround for preventing TexMgr_FreeTexture during TexMgr_ReloadImages
static qboolean in_reload_images;
/*
================
TexMgr_FreeTexture
================
*/
void TexMgr_FreeTexture (gltexture_t *kill)
{
gltexture_t *glt;
if (in_reload_images)
return;
if (kill == NULL)
{
Con_Printf ("TexMgr_FreeTexture: NULL texture\n");
return;
}
if (active_gltextures == kill)
{
active_gltextures = kill->next;
kill->next = free_gltextures;
free_gltextures = kill;
GL_DeleteTexture(kill);
numgltextures--;
return;
}
for (glt = active_gltextures; glt; glt = glt->next)
{
if (glt->next == kill)
{
glt->next = kill->next;
kill->next = free_gltextures;
free_gltextures = kill;
GL_DeleteTexture(kill);
numgltextures--;
return;
}
}
Con_Printf ("TexMgr_FreeTexture: not found\n");
}
/*
================
TexMgr_FreeTextures
compares each bit in "flags" to the one in glt->flags only if that bit is active in "mask"
================
*/
void TexMgr_FreeTextures (unsigned int flags, unsigned int mask)
{
gltexture_t *glt, *next;
for (glt = active_gltextures; glt; glt = next)
{
next = glt->next;
if ((glt->flags & mask) == (flags & mask))
TexMgr_FreeTexture (glt);
}
}
/*
================
TexMgr_FreeTexturesForOwner
================
*/
void TexMgr_FreeTexturesForOwner (qmodel_t *owner)
{
gltexture_t *glt, *next;
for (glt = active_gltextures; glt; glt = next)
{
next = glt->next;
if (glt && glt->owner == owner)
TexMgr_FreeTexture (glt);
}
}
/*
================
TexMgr_DeleteTextureObjects
================
*/
void TexMgr_DeleteTextureObjects (void)
{
gltexture_t *glt;
for (glt = active_gltextures; glt; glt = glt->next)
{
GL_DeleteTexture (glt);
}
}
/*
================================================================================
INIT
================================================================================
*/
/*
=================
TexMgr_LoadPalette -- johnfitz -- was VID_SetPalette, moved here, renamed, rewritten
=================
*/
void TexMgr_LoadPalette (void)
{
byte *pal, *src, *dst;
int i, mark;
FILE *f;
COM_FOpenFile ("gfx/palette.lmp", &f, NULL);
if (!f)
Sys_Error ("Couldn't load gfx/palette.lmp");
mark = Hunk_LowMark ();
pal = (byte *) Hunk_Alloc (768);
fread (pal, 1, 768, f);
fclose(f);
//standard palette, 255 is transparent
dst = (byte *)d_8to24table;
src = pal;
for (i = 0; i < 256; i++)
{
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
*dst++ = 255;
}
((byte *) &d_8to24table[255]) [3] = 0;
//fullbright palette, 0-223 are black (for additive blending)
src = pal + 224*3;
dst = (byte *) &d_8to24table_fbright[224];
for (i = 224; i < 256; i++)
{
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
*dst++ = 255;
}
for (i = 0; i < 224; i++)
{
dst = (byte *) &d_8to24table_fbright[i];
dst[3] = 255;
dst[2] = dst[1] = dst[0] = 0;
}
//nobright palette, 224-255 are black (for additive blending)
dst = (byte *)d_8to24table_nobright;
src = pal;
for (i = 0; i < 256; i++)
{
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
*dst++ = 255;
}
for (i = 224; i < 256; i++)
{
dst = (byte *) &d_8to24table_nobright[i];
dst[3] = 255;
dst[2] = dst[1] = dst[0] = 0;
}
//fullbright palette, for fence textures
memcpy(d_8to24table_fbright_fence, d_8to24table_fbright, 256*4);
d_8to24table_fbright_fence[255] = 0; // Alpha of zero.
//nobright palette, for fence textures
memcpy(d_8to24table_nobright_fence, d_8to24table_nobright, 256*4);
d_8to24table_nobright_fence[255] = 0; // Alpha of zero.
//conchars palette, 0 and 255 are transparent
memcpy(d_8to24table_conchars, d_8to24table, 256*4);
((byte *) &d_8to24table_conchars[0]) [3] = 0;
Hunk_FreeToLowMark (mark);
}
/*
================
TexMgr_NewGame
================
*/
void TexMgr_NewGame (void)
{
TexMgr_FreeTextures (0, TEXPREF_PERSIST); //deletes all textures where TEXPREF_PERSIST is unset
TexMgr_LoadPalette ();
}
/*
=============
TexMgr_RecalcWarpImageSize -- called during init, and after a vid_restart
choose safe warpimage size and resize existing warpimage textures
=============
*/
void TexMgr_RecalcWarpImageSize (void)
{
// int oldsize = gl_warpimagesize;
int mark;
gltexture_t *glt;
byte *dummy;
//
// find the new correct size
//
gl_warpimagesize = TexMgr_SafeTextureSize (512);
while (gl_warpimagesize > vid.width)
gl_warpimagesize >>= 1;
while (gl_warpimagesize > vid.height)
gl_warpimagesize >>= 1;
// ericw -- removed early exit if (gl_warpimagesize == oldsize).
// after vid_restart TexMgr_ReloadImage reloads textures
// to tx->source_width/source_height, which might not match oldsize.
// fixes: https://sourceforge.net/p/quakespasm/bugs/13/
//
// resize the textures in opengl
//
mark = Hunk_LowMark();
dummy = (byte *) Hunk_Alloc (gl_warpimagesize*gl_warpimagesize*4);
for (glt = active_gltextures; glt; glt = glt->next)
{
if (glt->flags & TEXPREF_WARPIMAGE)
{
GL_Bind (glt);
glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, gl_warpimagesize, gl_warpimagesize, 0, GL_RGBA, GL_UNSIGNED_BYTE, dummy);
glt->width = glt->height = gl_warpimagesize;
}
}
Hunk_FreeToLowMark (mark);
}
/*
================
TexMgr_Init
must be called before any texture loading
================
*/
void TexMgr_Init (void)
{
int i;
static byte notexture_data[16] = {159,91,83,255,0,0,0,255,0,0,0,255,159,91,83,255}; //black and pink checker
static byte nulltexture_data[16] = {127,191,255,255,0,0,0,255,0,0,0,255,127,191,255,255}; //black and blue checker
extern texture_t *r_notexture_mip, *r_notexture_mip2;
// init texture list
int initialtexturecount = 256;
free_gltextures = (gltexture_t *) Hunk_AllocName (initialtexturecount * sizeof(gltexture_t), "gltextures");
active_gltextures = NULL;
for (i = 0; i < initialtexturecount - 1; i++)
free_gltextures[i].next = &free_gltextures[i+1];
free_gltextures[i].next = NULL;
numgltextures = 0;
// palette
TexMgr_LoadPalette ();
Cvar_RegisterVariable (&gl_max_size);
Cvar_RegisterVariable (&gl_picmip);
Cvar_RegisterVariable (&gl_texture_anisotropy);
Cvar_SetCallback (&gl_texture_anisotropy, &TexMgr_Anisotropy_f);
gl_texturemode.string = glmodes[glmode_idx].name2?glmodes[glmode_idx].name2:glmodes[glmode_idx].name1;
Cvar_RegisterVariable (&gl_texturemode);
Cvar_SetCallback (&gl_texturemode, &TexMgr_TextureMode_f);
Cmd_AddCommand ("gl_describetexturemodes", &TexMgr_DescribeTextureModes_f);
Cmd_AddCommand ("imagelist", &TexMgr_Imagelist_f);
Cmd_AddCommand ("imagedump", &TexMgr_Imagedump_f);
// poll max size from hardware
glGetIntegerv (GL_MAX_TEXTURE_SIZE, &gl_hardware_maxsize);
// load notexture images
notexture = TexMgr_LoadImage (NULL, "notexture", 2, 2, SRC_RGBA, notexture_data, "", (src_offset_t)notexture_data, TEXPREF_NEAREST | TEXPREF_PERSIST | TEXPREF_NOPICMIP);
nulltexture = TexMgr_LoadImage (NULL, "nulltexture", 2, 2, SRC_RGBA, nulltexture_data, "", (src_offset_t)nulltexture_data, TEXPREF_NEAREST | TEXPREF_PERSIST | TEXPREF_NOPICMIP);
//have to assign these here becuase Mod_Init is called before TexMgr_Init
r_notexture_mip->gltexture = r_notexture_mip2->gltexture = notexture;
//set safe size for warpimages
gl_warpimagesize = 0;
TexMgr_RecalcWarpImageSize ();
}
/*
================================================================================
IMAGE LOADING
================================================================================
*/
/*
================
TexMgr_Pad -- return smallest power of two greater than or equal to s
================
*/
int TexMgr_Pad (int s)
{
int i;
for (i = 1; i < s; i<<=1)
;
return i;
}
/*
===============
TexMgr_SafeTextureSize -- return a size with hardware and user prefs in mind
===============
*/
int TexMgr_SafeTextureSize (int s)
{
if (!gl_texture_NPOT)
s = TexMgr_Pad(s);
if ((int)gl_max_size.value > 0)
s = q_min(TexMgr_Pad((int)gl_max_size.value), s);
s = q_min(gl_hardware_maxsize, s);
return s;
}
/*
================
TexMgr_PadConditional -- only pad if a texture of that size would be padded. (used for tex coords)
================
*/
int TexMgr_PadConditional (int s)
{
if (s < TexMgr_SafeTextureSize(s))
return TexMgr_Pad(s);
else
return s;
}
/*
================
TexMgr_MipMapW
================
*/
static unsigned *TexMgr_MipMapW (unsigned *data, int width, int height)
{
int i, size;
byte *out, *in;
out = in = (byte *)data;
size = (width*height)>>1;
for (i = 0; i < size; i++, out += 4, in += 8)
{
out[0] = (in[0] + in[4])>>1;
out[1] = (in[1] + in[5])>>1;
out[2] = (in[2] + in[6])>>1;
out[3] = (in[3] + in[7])>>1;
}
return data;
}
/*
================
TexMgr_MipMapH
================
*/
static unsigned *TexMgr_MipMapH (unsigned *data, int width, int height)
{
int i, j;
byte *out, *in;
out = in = (byte *)data;
height>>=1;
width<<=2;
for (i = 0; i < height; i++, in += width)
{
for (j = 0; j < width; j += 4, out += 4, in += 4)
{
out[0] = (in[0] + in[width+0])>>1;
out[1] = (in[1] + in[width+1])>>1;
out[2] = (in[2] + in[width+2])>>1;
out[3] = (in[3] + in[width+3])>>1;
}
}
return data;
}
/*
================
TexMgr_ResampleTexture -- bilinear resample
================
*/
static unsigned *TexMgr_ResampleTexture (unsigned *in, int inwidth, int inheight, qboolean alpha)
{
byte *nwpx, *nepx, *swpx, *sepx, *dest;
unsigned xfrac, yfrac, x, y, modx, mody, imodx, imody, injump, outjump;
unsigned *out;
int i, j, outwidth, outheight;
if (inwidth == TexMgr_Pad(inwidth) && inheight == TexMgr_Pad(inheight))
return in;
outwidth = TexMgr_Pad(inwidth);
outheight = TexMgr_Pad(inheight);
out = (unsigned *) Hunk_Alloc(outwidth*outheight*4);
xfrac = ((inwidth-1) << 16) / (outwidth-1);
yfrac = ((inheight-1) << 16) / (outheight-1);
y = outjump = 0;
for (i = 0; i < outheight; i++)
{
mody = (y>>8) & 0xFF;
imody = 256 - mody;
injump = (y>>16) * inwidth;
x = 0;
for (j = 0; j < outwidth; j++)
{
modx = (x>>8) & 0xFF;
imodx = 256 - modx;
nwpx = (byte *)(in + (x>>16) + injump);
nepx = nwpx + 4;
swpx = nwpx + inwidth*4;
sepx = swpx + 4;
dest = (byte *)(out + outjump + j);
dest[0] = (nwpx[0]*imodx*imody + nepx[0]*modx*imody + swpx[0]*imodx*mody + sepx[0]*modx*mody)>>16;
dest[1] = (nwpx[1]*imodx*imody + nepx[1]*modx*imody + swpx[1]*imodx*mody + sepx[1]*modx*mody)>>16;
dest[2] = (nwpx[2]*imodx*imody + nepx[2]*modx*imody + swpx[2]*imodx*mody + sepx[2]*modx*mody)>>16;
if (alpha)
dest[3] = (nwpx[3]*imodx*imody + nepx[3]*modx*imody + swpx[3]*imodx*mody + sepx[3]*modx*mody)>>16;
else
dest[3] = 255;
x += xfrac;
}
outjump += outwidth;
y += yfrac;
}
return out;
}
/*
===============
TexMgr_AlphaEdgeFix
eliminate pink edges on sprites, etc.
operates in place on 32bit data
spike -- small note that would be better to use premultiplied alpha to completely eliminate these skirts without the possibility of misbehaving.
===============
*/
static void TexMgr_AlphaEdgeFix (byte *data, int width, int height)
{
int i, j, n = 0, b, c[3] = {0,0,0},
lastrow, thisrow, nextrow,
lastpix, thispix, nextpix;
byte *dest = data;
for (i = 0; i < height; i++)
{
lastrow = width * 4 * ((i == 0) ? height-1 : i-1);
thisrow = width * 4 * i;
nextrow = width * 4 * ((i == height-1) ? 0 : i+1);
for (j = 0; j < width; j++, dest += 4)
{
if (dest[3]) //not transparent
continue;
lastpix = 4 * ((j == 0) ? width-1 : j-1);
thispix = 4 * j;
nextpix = 4 * ((j == width-1) ? 0 : j+1);
b = lastrow + lastpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = thisrow + lastpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = nextrow + lastpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = lastrow + thispix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = nextrow + thispix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = lastrow + nextpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = thisrow + nextpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
b = nextrow + nextpix; if (data[b+3]) {c[0] += data[b]; c[1] += data[b+1]; c[2] += data[b+2]; n++;}
//average all non-transparent neighbors
if (n)
{
dest[0] = (byte)(c[0]/n);
dest[1] = (byte)(c[1]/n);
dest[2] = (byte)(c[2]/n);
n = c[0] = c[1] = c[2] = 0;
}
}
}
}
/*
===============
TexMgr_PadEdgeFixW -- special case of AlphaEdgeFix for textures that only need it because they were padded
operates in place on 32bit data, and expects unpadded height and width values
===============
*/
static void TexMgr_PadEdgeFixW (byte *data, int width, int height)
{
byte *src, *dst;
int i, padw, padh;
padw = TexMgr_PadConditional(width);
padh = TexMgr_PadConditional(height);
//copy last full column to first empty column, leaving alpha byte at zero
src = data + (width - 1) * 4;
for (i = 0; i < padh; i++)
{
src[4] = src[0];
src[5] = src[1];
src[6] = src[2];
src += padw * 4;
}
//copy first full column to last empty column, leaving alpha byte at zero
src = data;
dst = data + (padw - 1) * 4;
for (i = 0; i < padh; i++)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
src += padw * 4;
dst += padw * 4;
}
}
/*
===============
TexMgr_PadEdgeFixH -- special case of AlphaEdgeFix for textures that only need it because they were padded
operates in place on 32bit data, and expects unpadded height and width values
===============
*/
static void TexMgr_PadEdgeFixH (byte *data, int width, int height)
{
byte *src, *dst;
int i, padw, padh;
padw = TexMgr_PadConditional(width);
padh = TexMgr_PadConditional(height);
//copy last full row to first empty row, leaving alpha byte at zero
dst = data + height * padw * 4;
src = dst - padw * 4;
for (i = 0; i < padw; i++)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
src += 4;
dst += 4;
}
//copy first full row to last empty row, leaving alpha byte at zero
dst = data + (padh - 1) * padw * 4;
src = data;
for (i = 0; i < padw; i++)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
src += 4;
dst += 4;
}
}
/*
================
TexMgr_8to32
================
*/
static unsigned *TexMgr_8to32 (byte *in, int pixels, unsigned int *usepal)
{
int i;
unsigned *out, *data;
out = data = (unsigned *) Hunk_Alloc(pixels*4);
for (i = 0; i < pixels; i++)
*out++ = usepal[*in++];
return data;
}
/*
================
TexMgr_PadImageW -- return image with width padded up to power-of-two dimentions
================
*/
static byte *TexMgr_PadImageW (byte *in, int width, int height, byte padbyte)
{
int i, j, outwidth;
byte *out, *data;
if (width == TexMgr_Pad(width))
return in;
outwidth = TexMgr_Pad(width);
out = data = (byte *) Hunk_Alloc(outwidth*height);
for (i = 0; i < height; i++)
{
for (j = 0; j < width; j++)
*out++ = *in++;
for ( ; j < outwidth; j++)
*out++ = padbyte;
}
return data;
}
/*
================
TexMgr_PadImageH -- return image with height padded up to power-of-two dimentions
================
*/
static byte *TexMgr_PadImageH (byte *in, int width, int height, byte padbyte)
{
int i, srcpix, dstpix;
byte *data, *out;
if (height == TexMgr_Pad(height))
return in;
srcpix = width * height;
dstpix = width * TexMgr_Pad(height);
out = data = (byte *) Hunk_Alloc(dstpix);
for (i = 0; i < srcpix; i++)
*out++ = *in++;
for ( ; i < dstpix; i++)
*out++ = padbyte;
return data;
}
static byte *TexMgr_PreMultiply32(byte *in, size_t width, size_t height)
{
size_t pixels = width * height;
byte *out = (byte *) Hunk_Alloc(pixels*4);
byte *result = out;
while (pixels --> 0)
{
out[0] = (in[0]*in[3])>>8;
out[1] = (in[1]*in[3])>>8;
out[2] = (in[2]*in[3])>>8;
out[3] = in[3];
in += 4;
out += 4;
}
return result;
}
/*
================
TexMgr_LoadImage32 -- handles 32bit source data
================
*/
static void TexMgr_LoadImage32 (gltexture_t *glt, unsigned *data)
{
int internalformat, miplevel, mipwidth, mipheight, picmip;
//do this before any rescaling
if (glt->flags & TEXPREF_PREMULTIPLY)
data = (unsigned*)TexMgr_PreMultiply32((byte*)data, glt->width, glt->height);
if (!gl_texture_NPOT)
{
// resample up
data = TexMgr_ResampleTexture (data, glt->width, glt->height, glt->flags & TEXPREF_ALPHA);
glt->width = TexMgr_Pad(glt->width);
glt->height = TexMgr_Pad(glt->height);
}
// mipmap down
picmip = (glt->flags & TEXPREF_NOPICMIP) ? 0 : q_max((int)gl_picmip.value, 0);
mipwidth = TexMgr_SafeTextureSize (glt->width >> picmip);
mipheight = TexMgr_SafeTextureSize (glt->height >> picmip);
while ((int) glt->width > mipwidth)
{
TexMgr_MipMapW (data, glt->width, glt->height);
glt->width >>= 1;
if (glt->flags & TEXPREF_ALPHA)
TexMgr_AlphaEdgeFix ((byte *)data, glt->width, glt->height);
}
while ((int) glt->height > mipheight)
{
TexMgr_MipMapH (data, glt->width, glt->height);
glt->height >>= 1;
if (glt->flags & TEXPREF_ALPHA)
TexMgr_AlphaEdgeFix ((byte *)data, glt->width, glt->height);
}
// upload
GL_Bind (glt);
internalformat = (glt->flags & TEXPREF_ALPHA) ? gl_alpha_format : gl_solid_format;
glTexImage2D (GL_TEXTURE_2D, 0, internalformat, glt->width, glt->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
// upload mipmaps
if (glt->flags & TEXPREF_MIPMAP)
{
mipwidth = glt->width;
mipheight = glt->height;
for (miplevel=1; mipwidth > 1 || mipheight > 1; miplevel++)
{
if (mipwidth > 1)
{
TexMgr_MipMapW (data, mipwidth, mipheight);
mipwidth >>= 1;
}
if (mipheight > 1)
{
TexMgr_MipMapH (data, mipwidth, mipheight);
mipheight >>= 1;
}
glTexImage2D (GL_TEXTURE_2D, miplevel, internalformat, mipwidth, mipheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
}
}
// set filter modes
TexMgr_SetFilterModes (glt);
}
void TexMgr_BlockSize (enum srcformat format, int *bytes, int *width, int *height)
{
*width = 1;
*height = 1;
switch(format)
{
case SRC_RGBA:
*bytes = 4;
break;
case SRC_LIGHTMAP:
*bytes = lightmap_bytes;
break;
case SRC_INDEXED:
*bytes = 1;
break;
case SRC_EXTERNAL:
*bytes = 0;
break;
default:
*bytes = compressedformats[format].blockbytes;
*width = compressedformats[format].blockwidth;
*height = compressedformats[format].blockheight;
break;
}
}
size_t TexMgr_ImageSize (int width, int height, enum srcformat format)
{
int miplevel, mipwidth, mipheight;
size_t mipbytes = 0, blockbytes;
unsigned int blockwidth, blockheight;
switch(format)
{
case SRC_RGBA:
return width*height*4;
case SRC_LIGHTMAP:
return width*height*lightmap_bytes;
case SRC_INDEXED:
return width*height;
case SRC_EXTERNAL: //panic
Con_Printf("TexMgr_ImageCompressedSize called for SRC_EXTERNAL\n");
return 0;
default:
//a compressed format with multiple mip levels in it
blockbytes = compressedformats[format].blockbytes;
blockwidth = compressedformats[format].blockwidth;
blockheight = compressedformats[format].blockheight;
for (miplevel = 0; ; miplevel++)
{
mipwidth = width >> miplevel;
mipheight = height >> miplevel;
if (!mipwidth && !mipheight)
break;
mipwidth = q_max(1,mipwidth); //include the 1*1 mip with non-square textures.
mipheight = q_max(1,mipheight);
mipbytes += blockbytes*((mipwidth+blockwidth-1)/blockwidth)*((mipheight+blockheight-1)/blockheight);
}
return mipbytes;
}
}
enum srcformat TexMgr_FormatForName (const char *code)
{
size_t i;
for (i = 0; i < sizeof(compressedformats)/sizeof(compressedformats[0]); i++)
{
if (!compressedformats[i].formatname)
continue;
if (!q_strcasecmp(code, compressedformats[i].formatname))
return i;
}
return SRC_EXTERNAL;
}
enum srcformat TexMgr_FormatForCode (const char *code)
{
size_t i;
for (i = 0; i < sizeof(compressedformats)/sizeof(compressedformats[0]); i++)
{
if (!compressedformats[i].mipextname)
continue;
if (!q_strncasecmp(code, compressedformats[i].mipextname, 4))
return i;
}
return SRC_EXTERNAL;
}
static void TexMgr_LoadImageCompressed (gltexture_t *glt, byte *data)
{
int internalformat, format, type, miplevel, mipwidth, mipheight, picmip;
size_t mipbytes, blockbytes;
unsigned int blockwidth, blockheight;
internalformat = compressedformats[glt->source_format].internalformat;
format = compressedformats[glt->source_format].format;
type = compressedformats[glt->source_format].type;
blockbytes = compressedformats[glt->source_format].blockbytes;
blockwidth = compressedformats[glt->source_format].blockwidth;
blockheight = compressedformats[glt->source_format].blockheight;
//no premultiply support.
//no npot fallback support
// mipmap down
picmip = ((glt->flags & TEXPREF_NOPICMIP) || !(glt->flags & TEXPREF_MIPMAP)) ? 0 : q_max((int)gl_picmip.value, 0);
//make sure the picmip level is not bigger than the number of mips that we have available...
while (picmip && (!(glt->width>>picmip) || !(glt->height>>picmip)))
picmip--;
if (type && blockbytes < 4)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1); //makes stuff work more reliably, if slower.
//upload each mip level in turn.
GL_Bind (glt);
for (miplevel = 0; ; miplevel++)
{
mipwidth = glt->width >> miplevel;
mipheight = glt->height >> miplevel;
if (!mipwidth && !mipheight)
break;
mipwidth = q_max(1,mipwidth); //include the 1*1 mip with non-square textures.
mipheight = q_max(1,mipheight);
mipbytes = blockbytes*((mipwidth+blockwidth-1)/blockwidth)*((mipheight+blockheight-1)/blockheight);
if (miplevel-picmip >= 0)
{
if (type)
glTexImage2D(GL_TEXTURE_2D, miplevel-picmip, internalformat, mipwidth, mipheight, 0, format, type, data);
else
GL_CompressedTexImage2D(GL_TEXTURE_2D, miplevel-picmip, internalformat, mipwidth, mipheight, 0, mipbytes, data);
}
data += mipbytes;
if (!(glt->flags & TEXPREF_MIPMAP))
break;
}
if (type && blockbytes < 4)
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); //back to opengl's default.
// set filter modes
TexMgr_SetFilterModes (glt);
}
/*
================
TexMgr_LoadImage8 -- handles 8bit source data, then passes it to LoadImage32
================
*/
static void TexMgr_LoadImage8 (gltexture_t *glt, byte *data)
{
extern cvar_t gl_fullbrights;
qboolean padw = false, padh = false;
byte padbyte;
unsigned int *usepal;
int i;
// HACK HACK HACK -- taken from tomazquake
if (strstr(glt->name, "shot1sid") &&
glt->width == 32 && glt->height == 32 &&
CRC_Block(data, 1024) == 65393)
{
// This texture in b_shell1.bsp has some of the first 32 pixels painted white.
// They are invisible in software, but look really ugly in GL. So we just copy
// 32 pixels from the bottom to make it look nice.
memcpy (data, data + 32*31, 32);
}
// detect false alpha cases
if (glt->flags & TEXPREF_ALPHA && !(glt->flags & TEXPREF_CONCHARS))
{
for (i = 0; i < (int) (glt->width * glt->height); i++)
if (data[i] == 255) //transparent index
break;
if (i == (int) (glt->width * glt->height))
glt->flags -= TEXPREF_ALPHA;
}
// choose palette and padbyte
if (glt->flags & TEXPREF_FULLBRIGHT)
{
if (glt->flags & TEXPREF_ALPHA)
usepal = d_8to24table_fbright_fence;
else
usepal = d_8to24table_fbright;
padbyte = 0;
}
else if (glt->flags & TEXPREF_NOBRIGHT && gl_fullbrights.value)
{
if (glt->flags & TEXPREF_ALPHA)
usepal = d_8to24table_nobright_fence;
else
usepal = d_8to24table_nobright;
padbyte = 0;
}
else if (glt->flags & TEXPREF_CONCHARS)
{
usepal = d_8to24table_conchars;
padbyte = 0;
}
else
{
usepal = d_8to24table;
padbyte = 255;
}
// pad each dimention, but only if it's not going to be downsampled later
if (glt->flags & TEXPREF_PAD)
{
if ((int) glt->width < TexMgr_SafeTextureSize(glt->width))
{
data = TexMgr_PadImageW (data, glt->width, glt->height, padbyte);
glt->width = TexMgr_Pad(glt->width);
padw = true;
}
if ((int) glt->height < TexMgr_SafeTextureSize(glt->height))
{
data = TexMgr_PadImageH (data, glt->width, glt->height, padbyte);
glt->height = TexMgr_Pad(glt->height);
padh = true;
}
}
// convert to 32bit
data = (byte *)TexMgr_8to32(data, glt->width * glt->height, usepal);
// fix edges
if ((glt->flags & TEXPREF_ALPHA) && !(glt->flags & TEXPREF_PREMULTIPLY))
TexMgr_AlphaEdgeFix (data, glt->width, glt->height);
else
{
if (padw)
TexMgr_PadEdgeFixW (data, glt->source_width, glt->source_height);
if (padh)
TexMgr_PadEdgeFixH (data, glt->source_width, glt->source_height);
}
// upload it
TexMgr_LoadImage32 (glt, (unsigned *)data);
}
/*
================
TexMgr_LoadLightmap -- handles lightmap data
================
*/
static void TexMgr_LoadLightmap (gltexture_t *glt, byte *data)
{
// upload it
GL_Bind (glt);
glTexImage2D (GL_TEXTURE_2D, 0, lightmap_bytes, glt->width, glt->height, 0, gl_lightmap_format, GL_UNSIGNED_BYTE, data);
// set filter modes
TexMgr_SetFilterModes (glt);
}
/*
================
TexMgr_LoadImage -- the one entry point for loading all textures
================
*/
gltexture_t *TexMgr_LoadImage (qmodel_t *owner, const char *name, int width, int height, enum srcformat format,
byte *data, const char *source_file, src_offset_t source_offset, unsigned flags)
{
unsigned short crc;
gltexture_t *glt = NULL;
int mark;
qboolean malloced = false;
enum srcformat fmt = format;
if (isDedicated)
return NULL;
// cache check
if (format == SRC_EXTERNAL)
crc = 0;
else
crc = CRC_Block(data, TexMgr_ImageSize(width, height, format));
if ((flags & TEXPREF_OVERWRITE) && (glt = TexMgr_FindTexture (owner, name)))
{
if (glt->source_crc == crc)
return glt;
}
if (format == SRC_EXTERNAL)
{
data = Image_LoadImage (source_file, &width, &height, &fmt, &malloced); //simple file
if (!data && (flags & TEXPREF_ALLOWMISSING))
return NULL; //don't allocate anything.
}
if (!glt)
glt = TexMgr_NewTexture ();
// copy data
glt->owner = owner;
q_strlcpy (glt->name, name, sizeof(glt->name));
glt->width = width;
glt->height = height;
glt->flags = flags;
glt->shirt = -1;
glt->pants = -1;
q_strlcpy (glt->source_file, source_file, sizeof(glt->source_file));
glt->source_offset = source_offset;
glt->source_format = format;
glt->source_width = width;
glt->source_height = height;
glt->source_crc = crc;
//upload it
mark = Hunk_LowMark();
switch (glt->source_format)
{
case SRC_INDEXED:
TexMgr_LoadImage8 (glt, data);
break;
case SRC_LIGHTMAP:
TexMgr_LoadLightmap (glt, data);
break;
case SRC_EXTERNAL:
if (!data)
{
glt->source_width = glt->source_height = 1;
glt->width = glt->source_width;
glt->height = glt->source_height;
TexMgr_LoadImage8 (glt, (byte*)"\x07");
glt->source_width = glt->source_height = 0;
glt->width = glt->source_width;
glt->height = glt->source_height;
}
else
{
glt->width = glt->source_width;
glt->height = glt->source_height;
if (fmt == SRC_RGBA)
TexMgr_LoadImage32 (glt, (unsigned *)data);
else if (fmt == SRC_INDEXED)
TexMgr_LoadImage8 (glt, data);
else
TexMgr_LoadImageCompressed (glt, data);
if (malloced)
free(data);
}
break;
case SRC_RGBA:
TexMgr_LoadImage32 (glt, (unsigned *)data);
break;
default:
TexMgr_LoadImageCompressed (glt, data);
break;
}
Hunk_FreeToLowMark(mark);
return glt;
}
/*
================================================================================
COLORMAPPING AND TEXTURE RELOADING
================================================================================
*/
/*
================
TexMgr_ReloadImage -- reloads a texture, and colormaps it if needed
================
*/
void TexMgr_ReloadImage (gltexture_t *glt, int shirt, int pants)
{
byte translation[256];
byte *src, *dst, *data = NULL, *translated;
int mark, size, i;
qboolean malloced = false;
enum srcformat fmt = glt->source_format;
//
// get source data
//
mark = Hunk_LowMark ();
if (glt->source_file[0] && glt->source_offset)
{
//lump inside file
long size;
FILE *f;
COM_FOpenFile(glt->source_file, &f, NULL);
if (!f)
goto invalid;
fseek (f, glt->source_offset, SEEK_CUR);
size = TexMgr_ImageSize(glt->source_width, glt->source_height, glt->source_format);
data = (byte *) Hunk_Alloc (size);
fread (data, 1, size, f);
fclose (f);
}
else if (glt->source_file[0] && !glt->source_offset)
data = Image_LoadImage (glt->source_file, (int *)&glt->source_width, (int *)&glt->source_height, &fmt, &malloced); //simple file
else if (!glt->source_file[0] && glt->source_offset)
data = (byte *) glt->source_offset; //image in memory
if (!data)
{
invalid:
Con_Printf ("TexMgr_ReloadImage: invalid source for %s\n", glt->name);
Hunk_FreeToLowMark(mark);
return;
}
glt->width = glt->source_width;
glt->height = glt->source_height;
//
// apply shirt and pants colors
//
// if shirt and pants are -1,-1, use existing shirt and pants colors
// if existing shirt and pants colors are -1,-1, don't bother colormapping
if (shirt > -1 && pants > -1)
{
if (glt->source_format == SRC_INDEXED)
{
glt->shirt = shirt;
glt->pants = pants;
}
else
Con_Printf ("TexMgr_ReloadImage: can't colormap a non SRC_INDEXED texture: %s\n", glt->name);
}
if (glt->shirt > -1 && glt->pants > -1)
{
//create new translation table
for (i = 0; i < 256; i++)
translation[i] = i;
shirt = glt->shirt * 16;
if (shirt < 128)
{
for (i = 0; i < 16; i++)
translation[TOP_RANGE+i] = shirt + i;
}
else
{
for (i = 0; i < 16; i++)
translation[TOP_RANGE+i] = shirt+15-i;
}
pants = glt->pants * 16;
if (pants < 128)
{
for (i = 0; i < 16; i++)
translation[BOTTOM_RANGE+i] = pants + i;
}
else
{
for (i = 0; i < 16; i++)
translation[BOTTOM_RANGE+i] = pants+15-i;
}
//translate texture
size = glt->width * glt->height;
dst = translated = (byte *) Hunk_Alloc (size);
src = data;
for (i = 0; i < size; i++)
*dst++ = translation[*src++];
data = translated;
}
//
// upload it
//
switch (glt->source_format)
{
case SRC_INDEXED:
TexMgr_LoadImage8 (glt, data);
break;
case SRC_LIGHTMAP:
TexMgr_LoadLightmap (glt, data);
break;
case SRC_EXTERNAL:
case SRC_RGBA:
TexMgr_LoadImage32 (glt, (unsigned *)data);
break;
default:
TexMgr_LoadImageCompressed (glt, data);
break;
}
if (malloced)
free(data);
Hunk_FreeToLowMark(mark);
}
/*
================
TexMgr_ReloadImages -- reloads all texture images. called only by vid_restart
================
*/
void TexMgr_ReloadImages (void)
{
gltexture_t *glt;
// ericw -- tricky bug: if the hunk is almost full, an allocation in TexMgr_ReloadImage
// triggers cache items to be freed, which calls back into TexMgr to free the
// texture. If this frees 'glt' in the loop below, the active_gltextures
// list gets corrupted.
// A test case is jam3_tronyn.bsp with -heapsize 65536, and do several mode
// switches/fullscreen toggles
// 2015-09-04 -- Cache_Flush workaround was causing issues (http://sourceforge.net/p/quakespasm/bugs/10/)
// switching to a boolean flag.
in_reload_images = true;
for (glt = active_gltextures; glt; glt = glt->next)
{
glGenTextures(1, &glt->texnum);
TexMgr_ReloadImage (glt, -1, -1);
}
in_reload_images = false;
}
/*
================
TexMgr_ReloadNobrightImages -- reloads all texture that were loaded with the nobright palette. called when gl_fullbrights changes
================
*/
void TexMgr_ReloadNobrightImages (void)
{
gltexture_t *glt;
for (glt = active_gltextures; glt; glt = glt->next)
if (glt->flags & TEXPREF_NOBRIGHT)
TexMgr_ReloadImage(glt, -1, -1);
}
/*
================================================================================
TEXTURE BINDING / TEXTURE UNIT SWITCHING
================================================================================
*/
static GLuint currenttexture[3] = {GL_UNUSED_TEXTURE, GL_UNUSED_TEXTURE, GL_UNUSED_TEXTURE}; // to avoid unnecessary texture sets
static GLenum currenttarget = GL_TEXTURE0_ARB;
qboolean mtexenabled = false;
/*
================
GL_SelectTexture -- johnfitz -- rewritten
================
*/
void GL_SelectTexture (GLenum target)
{
if (target == currenttarget)
return;
GL_SelectTextureFunc(target);
currenttarget = target;
}
/*
================
GL_DisableMultitexture -- selects texture unit 0
================
*/
void GL_DisableMultitexture(void)
{
if (mtexenabled)
{
glDisable(GL_TEXTURE_2D);
GL_SelectTexture(GL_TEXTURE0_ARB);
mtexenabled = false;
}
}
/*
================
GL_EnableMultitexture -- selects texture unit 1
================
*/
void GL_EnableMultitexture(void)
{
if (gl_mtexable)
{
GL_SelectTexture(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_2D);
mtexenabled = true;
}
}
/*
================
GL_Bind -- johnfitz -- heavy revision
================
*/
void GL_Bind (gltexture_t *texture)
{
if (!texture)
texture = nulltexture;
if (texture->texnum != currenttexture[currenttarget - GL_TEXTURE0_ARB])
{
currenttexture[currenttarget - GL_TEXTURE0_ARB] = texture->texnum;
glBindTexture (GL_TEXTURE_2D, texture->texnum);
texture->visframe = r_framecount;
}
}
/*
================
GL_DeleteTexture -- ericw
Wrapper around glDeleteTextures that also clears the given texture number
from our per-TMU cached texture binding table.
================
*/
static void GL_DeleteTexture (gltexture_t *texture)
{
glDeleteTextures (1, &texture->texnum);
if (texture->texnum == currenttexture[0]) currenttexture[0] = GL_UNUSED_TEXTURE;
if (texture->texnum == currenttexture[1]) currenttexture[1] = GL_UNUSED_TEXTURE;
if (texture->texnum == currenttexture[2]) currenttexture[2] = GL_UNUSED_TEXTURE;
texture->texnum = 0;
}
/*
================
GL_ClearBindings -- ericw
Invalidates cached bindings, so the next GL_Bind calls for each TMU will
make real glBindTexture calls.
Call this after changing the binding outside of GL_Bind.
================
*/
void GL_ClearBindings(void)
{
int i;
for (i = 0; i < 3; i++)
{
currenttexture[i] = GL_UNUSED_TEXTURE;
}
}
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