/
shaders.c
2058 lines (1667 loc) · 55.1 KB
/
shaders.c
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/* -------------------------------------------------------------------------------
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
----------------------------------------------------------------------------------
This code has been altered significantly from its original form, to support
several games based on the Quake III Arena engine, in the form of "Q3Map2."
------------------------------------------------------------------------------- */
/* marker */
#define SHADERS_C
/* dependencies */
#include "q3map2.h"
/*
ColorMod()
routines for dealing with vertex color/alpha modification
*/
void ColorMod( colorMod_t *cm, int numVerts, bspDrawVert_t *drawVerts )
{
int i, j, k;
float c;
vec4_t mult, add;
bspDrawVert_t *dv;
colorMod_t *cm2;
/* dummy check */
if( cm == NULL || numVerts < 1 || drawVerts == NULL )
return;
/* walk vertex list */
for( i = 0; i < numVerts; i++ )
{
/* get vertex */
dv = &drawVerts[ i ];
/* walk colorMod list */
for( cm2 = cm; cm2 != NULL; cm2 = cm2->next )
{
/* default */
VectorSet( mult, 1.0f, 1.0f, 1.0f );
mult[ 3 ] = 1.0f;
VectorSet( add, 0.0f, 0.0f, 0.0f );
mult[ 3 ] = 0.0f;
/* switch on type */
switch( cm2->type )
{
case CM_COLOR_SET:
VectorClear( mult );
VectorScale( cm2->data, 255.0f, add );
break;
case CM_ALPHA_SET:
mult[ 3 ] = 0.0f;
add[ 3 ] = cm2->data[ 0 ] * 255.0f;
break;
case CM_COLOR_SCALE:
VectorCopy( cm2->data, mult );
break;
case CM_ALPHA_SCALE:
mult[ 3 ] = cm2->data[ 0 ];
break;
case CM_COLOR_DOT_PRODUCT:
c = DotProduct( dv->normal, cm2->data );
VectorSet( mult, c, c, c );
break;
case CM_ALPHA_DOT_PRODUCT:
mult[ 3 ] = DotProduct( dv->normal, cm2->data );
break;
case CM_COLOR_DOT_PRODUCT_2:
c = DotProduct( dv->normal, cm2->data );
c *= c;
VectorSet( mult, c, c, c );
break;
case CM_ALPHA_DOT_PRODUCT_2:
mult[ 3 ] = DotProduct( dv->normal, cm2->data );
mult[ 3 ] *= mult[ 3 ];
break;
default:
break;
}
/* apply mod */
for( j = 0; j < MAX_LIGHTMAPS; j++ )
{
for( k = 0; k < 4; k++ )
{
c = (mult[ k ] * dv->color[ j ][ k ]) + add[ k ];
if( c < 0 )
c = 0;
else if( c > 255 )
c = 255;
dv->color[ j ][ k ] = c;
}
}
}
}
}
/*
TCMod*()
routines for dealing with a 3x3 texture mod matrix
*/
void TCMod( tcMod_t mod, float st[ 2 ] )
{
float old[ 2 ];
old[ 0 ] = st[ 0 ];
old[ 1 ] = st[ 1 ];
st[ 0 ] = (mod[ 0 ][ 0 ] * old[ 0 ]) + (mod[ 0 ][ 1 ] * old[ 1 ]) + mod[ 0 ][ 2 ];
st[ 1 ] = (mod[ 1 ][ 0 ] * old[ 0 ]) + (mod[ 1 ][ 1 ] * old[ 1 ]) + mod[ 1 ][ 2 ];
}
void TCModIdentity( tcMod_t mod )
{
mod[ 0 ][ 0 ] = 1.0f; mod[ 0 ][ 1 ] = 0.0f; mod[ 0 ][ 2 ] = 0.0f;
mod[ 1 ][ 0 ] = 0.0f; mod[ 1 ][ 1 ] = 1.0f; mod[ 1 ][ 2 ] = 0.0f;
mod[ 2 ][ 0 ] = 0.0f; mod[ 2 ][ 1 ] = 0.0f; mod[ 2 ][ 2 ] = 1.0f; /* this row is only used for multiples, not transformation */
}
void TCModMultiply( tcMod_t a, tcMod_t b, tcMod_t out )
{
int i;
for( i = 0; i < 3; i++ )
{
out[ i ][ 0 ] = (a[ i ][ 0 ] * b[ 0 ][ 0 ]) + (a[ i ][ 1 ] * b[ 1 ][ 0 ]) + (a[ i ][ 2 ] * b[ 2 ][ 0 ]);
out[ i ][ 1 ] = (a[ i ][ 0 ] * b[ 0 ][ 1 ]) + (a[ i ][ 1 ] * b[ 1 ][ 1 ]) + (a[ i ][ 2 ] * b[ 2 ][ 1 ]);
out[ i ][ 2 ] = (a[ i ][ 0 ] * b[ 0 ][ 2 ]) + (a[ i ][ 1 ] * b[ 1 ][ 2 ]) + (a[ i ][ 2 ] * b[ 2 ][ 2 ]);
}
}
void TCModTranslate( tcMod_t mod, float s, float t )
{
mod[ 0 ][ 2 ] += s;
mod[ 1 ][ 2 ] += t;
}
void TCModScale( tcMod_t mod, float s, float t )
{
mod[ 0 ][ 0 ] *= s;
mod[ 1 ][ 1 ] *= t;
}
void TCModRotate( tcMod_t mod, float euler )
{
tcMod_t old, temp;
float radians, sinv, cosv;
memcpy( old, mod, sizeof( tcMod_t ) );
TCModIdentity( temp );
radians = euler / 180 * Q_PI;
sinv = sin( radians );
cosv = cos( radians );
temp[ 0 ][ 0 ] = cosv; temp[ 0 ][ 1 ] = -sinv;
temp[ 1 ][ 0 ] = sinv; temp[ 1 ][ 1 ] = cosv;
TCModMultiply( old, temp, mod );
}
/*
ApplySurfaceParm() - ydnar
applies a named surfaceparm to the supplied flags
*/
qboolean ApplySurfaceParm( char *name, int *contentFlags, int *surfaceFlags, int *compileFlags )
{
int i, fake;
surfaceParm_t *sp;
/* dummy check */
if( name == NULL )
name = "";
if( contentFlags == NULL )
contentFlags = &fake;
if( surfaceFlags == NULL )
surfaceFlags = &fake;
if( compileFlags == NULL )
compileFlags = &fake;
/* walk the current game's surfaceparms */
sp = game->surfaceParms;
while( sp->name != NULL )
{
/* match? */
if( !Q_stricmp( name, sp->name ) )
{
/* clear and set flags */
*contentFlags &= ~(sp->contentFlagsClear);
*contentFlags |= sp->contentFlags;
*surfaceFlags &= ~(sp->surfaceFlagsClear);
*surfaceFlags |= sp->surfaceFlags;
*compileFlags &= ~(sp->compileFlagsClear);
*compileFlags |= sp->compileFlags;
/* return ok */
return qtrue;
}
/* next */
sp++;
}
/* check custom info parms */
for( i = 0; i < numCustSurfaceParms; i++ )
{
/* get surfaceparm */
sp = &custSurfaceParms[ i ];
/* match? */
if( !Q_stricmp( name, sp->name ) )
{
/* clear and set flags */
*contentFlags &= ~(sp->contentFlagsClear);
*contentFlags |= sp->contentFlags;
*surfaceFlags &= ~(sp->surfaceFlagsClear);
*surfaceFlags |= sp->surfaceFlags;
*compileFlags &= ~(sp->compileFlagsClear);
*compileFlags |= sp->compileFlags;
/* return ok */
return qtrue;
}
}
/* no matching surfaceparm found */
return qfalse;
}
/*
BeginMapShaderFile() - ydnar
erases and starts a new map shader script
*/
void BeginMapShaderFile( const char *mapFile )
{
char base[ 1024 ];
int len;
/* dummy check */
mapName[ 0 ] = '\0';
mapShaderFile[ 0 ] = '\0';
if( mapFile == NULL || mapFile[ 0 ] == '\0' )
return;
/* copy map name */
strcpy( base, mapFile );
StripExtension( base );
/* extract map name */
len = strlen( base ) - 1;
while( len > 0 && base[ len ] != '/' && base[ len ] != '\\' )
len--;
strcpy( mapName, &base[ len + 1 ] );
base[ len ] = '\0';
if( len <= 0 )
return;
/* append ../scripts/q3map2_<mapname>.shader */
sprintf( mapShaderFile, "%s/../%s/q3map2_%s.shader", base, game->shaderPath, mapName );
Sys_FPrintf( SYS_VRB, "Map has shader script %s\n", mapShaderFile );
/* remove it */
remove( mapShaderFile );
/* stop making warnings about missing images */
warnImage = qfalse;
}
/*
WriteMapShaderFile() - ydnar
writes a shader to the map shader script
*/
void WriteMapShaderFile( void )
{
FILE *file;
shaderInfo_t *si;
int i, num;
/* dummy check */
if( mapShaderFile[ 0 ] == '\0' )
return;
/* are there any custom shaders? */
for( i = 0, num = 0; i < numShaderInfo; i++ )
{
if( shaderInfo[ i ].custom )
break;
}
if( i == numShaderInfo )
return;
/* note it */
Sys_FPrintf( SYS_VRB, "--- WriteMapShaderFile ---\n");
Sys_FPrintf( SYS_VRB, "Writing %s", mapShaderFile );
/* open shader file */
file = fopen( mapShaderFile, "w" );
if( file == NULL )
{
Sys_Printf( "WARNING: Unable to open map shader file %s for writing\n", mapShaderFile );
return;
}
/* print header */
fprintf( file,
"// Custom shader file for %s.bsp\n"
"// Generated by Q3Map2 (ydnar)\n"
"// Do not edit! This file is overwritten on recompiles.\n\n",
mapName );
/* walk the shader list */
for( i = 0, num = 0; i < numShaderInfo; i++ )
{
/* get the shader and print it */
si = &shaderInfo[ i ];
if( si->custom == qfalse || si->shaderText == NULL || si->shaderText[ 0 ] == '\0' )
continue;
num++;
/* print it to the file */
fprintf( file, "%s%s\n", si->shader, si->shaderText );
//Sys_Printf( "%s%s\n", si->shader, si->shaderText ); /* FIXME: remove debugging code */
Sys_FPrintf( SYS_VRB, "." );
}
/* close the shader */
fflush( file );
fclose( file );
Sys_FPrintf( SYS_VRB, "\n" );
/* print some stats */
Sys_Printf( "%9d custom shaders emitted\n", num );
}
/*
CustomShader() - ydnar
sets up a custom map shader
*/
shaderInfo_t *CustomShader( shaderInfo_t *si, char *find, char *replace )
{
shaderInfo_t *csi;
char shader[ MAX_QPATH ];
char *s;
int loc;
md5_state_t mh;
byte digest[ 16 ];
char *srcShaderText, temp[ 8192 ], shaderText[ 8192 ]; /* ydnar: fixme (make this bigger?) */
/* dummy check */
if( si == NULL )
return ShaderInfoForShader( "default" );
/* default shader text source */
srcShaderText = si->shaderText;
/* et: implicitMap */
if( si->implicitMap == IM_OPAQUE )
{
srcShaderText = temp;
sprintf( temp, "\n"
"{ // Q3Map2 defaulted (implicitMap)\n"
"\t{\n"
"\t\tmap $lightmap\n"
"\t\trgbGen identity\n"
"\t}\n"
"\tq3map_styleMarker\n"
"\t{\n"
"\t\tmap %s\n"
"\t\tblendFunc GL_DST_COLOR GL_ZERO\n"
"\t\trgbGen identity\n"
"\t}\n"
"}\n",
si->implicitImagePath );
}
/* et: implicitMask */
else if( si->implicitMap == IM_MASKED )
{
srcShaderText = temp;
sprintf( temp, "\n"
"{ // Q3Map2 defaulted (implicitMask)\n"
"\tcull none\n"
"\t{\n"
"\t\tmap %s\n"
"\t\talphaFunc GE128\n"
"\t\tdepthWrite\n"
"\t}\n"
"\t{\n"
"\t\tmap $lightmap\n"
"\t\trgbGen identity\n"
"\t\tdepthFunc equal\n"
"\t}\n"
"\tq3map_styleMarker\n"
"\t{\n"
"\t\tmap %s\n"
"\t\tblendFunc GL_DST_COLOR GL_ZERO\n"
"\t\tdepthFunc equal\n"
"\t\trgbGen identity\n"
"\t}\n"
"}\n",
si->implicitImagePath,
si->implicitImagePath );
}
/* et: implicitBlend */
else if( si->implicitMap == IM_BLEND )
{
srcShaderText = temp;
sprintf( temp, "\n"
"{ // Q3Map2 defaulted (implicitBlend)\n"
"\tcull none\n"
"\t{\n"
"\t\tmap %s\n"
"\t\tblendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA\n"
"\t}\n"
"\t{\n"
"\t\tmap $lightmap\n"
"\t\trgbGen identity\n"
"\t\tblendFunc GL_DST_COLOR GL_ZERO\n"
"\t}\n"
"\tq3map_styleMarker\n"
"}\n",
si->implicitImagePath );
}
/* default shader text */
else if( srcShaderText == NULL )
{
srcShaderText = temp;
sprintf( temp, "\n"
"{ // Q3Map2 defaulted\n"
"\t{\n"
"\t\tmap $lightmap\n"
"\t\trgbGen identity\n"
"\t}\n"
"\tq3map_styleMarker\n"
"\t{\n"
"\t\tmap %s.tga\n"
"\t\tblendFunc GL_DST_COLOR GL_ZERO\n"
"\t\trgbGen identity\n"
"\t}\n"
"}\n",
si->shader );
}
/* error check */
if( (strlen( mapName ) + 1 + 32) > MAX_QPATH )
Error( "Custom shader name length (%d) exceeded. Shorten your map name.\n", MAX_QPATH );
/* do some bad find-replace */
s = strstr( srcShaderText, find );
if( s == NULL )
//% strcpy( shaderText, srcShaderText );
return si; /* testing just using the existing shader if this fails */
else
{
/* substitute 'find' with 'replace' */
loc = s - srcShaderText;
strcpy( shaderText, srcShaderText );
shaderText[ loc ] = '\0';
strcat( shaderText, replace );
strcat( shaderText, &srcShaderText[ loc + strlen( find ) ] );
}
/* make md5 hash of the shader text */
md5_init( &mh );
md5_append( &mh, shaderText, strlen( shaderText ) );
md5_finish( &mh, digest );
/* mangle hash into a shader name */
sprintf( shader, "%s/%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", mapName,
digest[ 0 ], digest[ 1 ], digest[ 2 ], digest[ 3 ], digest[ 4 ], digest[ 5 ], digest[ 6 ], digest[ 7 ],
digest[ 8 ], digest[ 9 ], digest[ 10 ], digest[ 11 ], digest[ 12 ], digest[ 13 ], digest[ 14 ], digest[ 15 ] );
/* get shader */
csi = ShaderInfoForShader( shader );
/* might be a preexisting shader */
if( csi->custom )
return csi;
/* clone the existing shader and rename */
memcpy( csi, si, sizeof( shaderInfo_t ) );
strcpy( csi->shader, shader );
csi->custom = qtrue;
/* store new shader text */
csi->shaderText = safe_malloc( strlen( shaderText ) + 1 );
strcpy( csi->shaderText, shaderText ); /* LEAK! */
/* return it */
return csi;
}
/*
EmitVertexRemapShader()
adds a vertexremapshader key/value pair to worldspawn
*/
void EmitVertexRemapShader( char *from, char *to )
{
md5_state_t mh;
byte digest[ 16 ];
char key[ 64 ], value[ 256 ];
/* dummy check */
if( from == NULL || from[ 0 ] == '\0' ||
to == NULL || to[ 0 ] == '\0' )
return;
/* build value */
sprintf( value, "%s;%s", from, to );
/* make md5 hash */
md5_init( &mh );
md5_append( &mh, value, strlen( value ) );
md5_finish( &mh, digest );
/* make key (this is annoying, as vertexremapshader is precisely 17 characters,
which is one too long, so we leave off the last byte of the md5 digest) */
sprintf( key, "vertexremapshader%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
digest[ 0 ], digest[ 1 ], digest[ 2 ], digest[ 3 ], digest[ 4 ], digest[ 5 ], digest[ 6 ], digest[ 7 ],
digest[ 8 ], digest[ 9 ], digest[ 10 ], digest[ 11 ], digest[ 12 ], digest[ 13 ], digest[ 14 ] ); /* no: digest[ 15 ] */
/* add key/value pair to worldspawn */
SetKeyValue( &entities[ 0 ], key, value );
}
/*
AllocShaderInfo()
allocates and initializes a new shader
*/
static shaderInfo_t *AllocShaderInfo( void )
{
shaderInfo_t *si;
/* allocate? */
if( shaderInfo == NULL )
{
shaderInfo = safe_malloc( sizeof( shaderInfo_t ) * MAX_SHADER_INFO );
numShaderInfo = 0;
}
/* bounds check */
if( numShaderInfo == MAX_SHADER_INFO )
Error( "MAX_SHADER_INFO exceeded. Remove some PK3 files or shader scripts from shaderlist.txt and try again." );
si = &shaderInfo[ numShaderInfo ];
numShaderInfo++;
/* ydnar: clear to 0 first */
memset( si, 0, sizeof( shaderInfo_t ) );
/* set defaults */
ApplySurfaceParm( "default", &si->contentFlags, &si->surfaceFlags, &si->compileFlags );
si->backsplashFraction = DEF_BACKSPLASH_FRACTION;
si->backsplashDistance = DEF_BACKSPLASH_DISTANCE;
si->bounceScale = DEF_RADIOSITY_BOUNCE;
si->lightStyle = LS_NORMAL;
si->polygonOffset = qfalse;
si->shadeAngleDegrees = 0.0f;
si->lightmapSampleSize = 0;
si->lightmapSampleOffset = DEFAULT_LIGHTMAP_SAMPLE_OFFSET;
si->patchShadows = qfalse;
si->vertexShadows = qtrue; /* ydnar: changed default behavior */
si->forceSunlight = qfalse;
si->vertexScale = 1.0;
si->notjunc = qfalse;
/* ydnar: set texture coordinate transform matrix to identity */
TCModIdentity( si->mod );
/* ydnar: lightmaps can now be > 128x128 in certain games or an externally generated tga */
si->lmCustomWidth = lmCustomSize;
si->lmCustomHeight = lmCustomSize;
/* return to sender */
return si;
}
/*
FinishShader() - ydnar
sets a shader's width and height among other things
*/
void FinishShader( shaderInfo_t *si )
{
int x, y;
float st[ 2 ], o[ 2 ], dist, bestDist;
vec4_t color, bestColor, delta;
/* don't double-dip */
if( si->finished )
return;
/* if they're explicitly set, copy from image size */
if( si->shaderWidth == 0 && si->shaderHeight == 0 )
{
si->shaderWidth = si->shaderImage->width;
si->shaderHeight = si->shaderImage->height;
}
/* legacy terrain has explicit image-sized texture projection */
if( si->legacyTerrain && si->tcGen == qfalse )
{
/* set xy texture projection */
si->tcGen = qtrue;
VectorSet( si->vecs[ 0 ], (1.0f / (si->shaderWidth * 0.5f)), 0, 0 );
VectorSet( si->vecs[ 1 ], 0, (1.0f / (si->shaderHeight * 0.5f)), 0 );
}
/* find pixel coordinates best matching the average color of the image */
bestDist = 99999999;
o[ 0 ] = 1.0f / si->shaderImage->width;
o[ 1 ] = 1.0f / si->shaderImage->height;
for( y = 0, st[ 1 ] = 0.0f; y < si->shaderImage->height; y++, st[ 1 ] += o[ 1 ] )
{
for( x = 0, st[ 0 ] = 0.0f; x < si->shaderImage->width; x++, st[ 0 ] += o[ 0 ] )
{
/* sample the shader image */
RadSampleImage( si->shaderImage->pixels, si->shaderImage->width, si->shaderImage->height, st, color );
/* determine error squared */
VectorSubtract( color, si->averageColor, delta );
delta[ 3 ] = color[ 3 ] - si->averageColor[ 3 ];
dist = delta[ 0 ] * delta[ 0 ] + delta[ 1 ] * delta[ 1 ] + delta[ 2 ] * delta[ 2 ] + delta[ 3 ] * delta[ 3 ];
if( dist < bestDist )
{
VectorCopy( color, bestColor );
bestColor[ 3 ] = color[ 3 ];
si->stFlat[ 0 ] = st[ 0 ];
si->stFlat[ 1 ] = st[ 1 ];
}
}
}
/* set to finished */
si->finished = qtrue;
}
/*
LoadShaderImages()
loads a shader's images
ydnar: image.c made this a bit simpler
*/
static void LoadShaderImages( shaderInfo_t *si )
{
int i, count;
float color[ 4 ];
/* nodraw shaders don't need images */
if( si->compileFlags & C_NODRAW )
si->shaderImage = ImageLoad( DEFAULT_IMAGE );
else
{
/* try to load editor image first */
si->shaderImage = ImageLoad( si->editorImagePath );
/* then try shadername */
if( si->shaderImage == NULL )
si->shaderImage = ImageLoad( si->shader );
/* then try implicit image path (note: new behavior!) */
if( si->shaderImage == NULL )
si->shaderImage = ImageLoad( si->implicitImagePath );
/* then try lightimage (note: new behavior!) */
if( si->shaderImage == NULL )
si->shaderImage = ImageLoad( si->lightImagePath );
/* otherwise, use default image */
if( si->shaderImage == NULL )
{
si->shaderImage = ImageLoad( DEFAULT_IMAGE );
if( warnImage && strcmp( si->shader, "noshader" ) )
Sys_Printf( "WARNING: Couldn't find image for shader %s\n", si->shader );
}
/* load light image */
si->lightImage = ImageLoad( si->lightImagePath );
/* load normalmap image (ok if this is NULL) */
si->normalImage = ImageLoad( si->normalImagePath );
if( si->normalImage != NULL )
{
Sys_FPrintf( SYS_VRB, "Shader %s has\n"
" NM %s\n", si->shader, si->normalImagePath );
}
}
/* if no light image, use shader image */
if( si->lightImage == NULL )
si->lightImage = ImageLoad( si->shaderImage->name );
/* create default and average colors */
count = si->lightImage->width * si->lightImage->height;
VectorClear( color );
color[ 3 ] = 0.0f;
for( i = 0; i < count; i++ )
{
color[ 0 ] += si->lightImage->pixels[ i * 4 + 0 ];
color[ 1 ] += si->lightImage->pixels[ i * 4 + 1 ];
color[ 2 ] += si->lightImage->pixels[ i * 4 + 2 ];
color[ 3 ] += si->lightImage->pixels[ i * 4 + 3 ];
}
if( VectorLength( si->color ) <= 0.0f )
ColorNormalize( color, si->color );
VectorScale( color, (1.0f / count), si->averageColor );
}
/*
ShaderInfoForShader()
finds a shaderinfo for a named shader
*/
shaderInfo_t *ShaderInfoForShader( const char *shaderName )
{
int i;
shaderInfo_t *si;
char shader[ MAX_QPATH ];
/* dummy check */
if( shaderName == NULL || shaderName[ 0 ] == '\0' )
{
Sys_Printf( "WARNING: Null or empty shader name\n" );
shaderName = "missing";
}
/* strip off extension */
strcpy( shader, shaderName );
StripExtension( shader );
/* search for it */
for( i = 0; i < numShaderInfo; i++ )
{
si = &shaderInfo[ i ];
if( !Q_stricmp( shader, si->shader ) )
{
/* load image if necessary */
if( si->finished == qfalse )
{
LoadShaderImages( si );
FinishShader( si );
}
/* return it */
return si;
}
}
/* allocate a default shader */
si = AllocShaderInfo();
strcpy( si->shader, shader );
LoadShaderImages( si );
FinishShader( si );
/* return it */
return si;
}
/*
GetTokenAppend() - ydnar
gets a token and appends its text to the specified buffer
*/
static int oldScriptLine = 0;
static int tabDepth = 0;
qboolean GetTokenAppend( char *buffer, qboolean crossline )
{
qboolean r;
int i;
/* get the token */
r = GetToken( crossline );
if( r == qfalse || buffer == NULL || token[ 0 ] == '\0' )
return r;
/* pre-tabstops */
if( token[ 0 ] == '}' )
tabDepth--;
/* append? */
if( oldScriptLine != scriptline )
{
strcat( buffer, "\n" );
for( i = 0; i < tabDepth; i++ )
strcat( buffer, "\t" );
}
else
strcat( buffer, " " );
oldScriptLine = scriptline;
strcat( buffer, token );
/* post-tabstops */
if( token[ 0 ] == '{' )
tabDepth++;
/* return */
return r;
}
void Parse1DMatrixAppend( char *buffer, int x, vec_t *m )
{
int i;
if( !GetTokenAppend( buffer, qtrue ) || strcmp( token, "(" ) )
Error( "Parse1DMatrixAppend(): line %d: ( not found!", scriptline );
for( i = 0; i < x; i++ )
{
if( !GetTokenAppend( buffer, qfalse ) )
Error( "Parse1DMatrixAppend(): line %d: Number not found!", scriptline );
m[ i ] = atof( token );
}
if( !GetTokenAppend( buffer, qtrue ) || strcmp( token, ")" ) )
Error( "Parse1DMatrixAppend(): line %d: ) not found!", scriptline );
}
/*
ParseShaderFile()
parses a shader file into discrete shaderInfo_t
*/
static void ParseShaderFile( const char *filename )
{
int i, val;
shaderInfo_t *si;
char *suffix, temp[ 1024 ];
char shaderText[ 8192 ]; /* ydnar: fixme (make this bigger?) */
/* init */
si = NULL;
shaderText[ 0 ] = '\0';
/* load the shader */
LoadScriptFile( filename, 0 );
/* tokenize it */
while( 1 )
{
/* copy shader text to the shaderinfo */
if( si != NULL && shaderText[ 0 ] != '\0' )
{
strcat( shaderText, "\n" );
si->shaderText = safe_malloc( strlen( shaderText ) + 1 );
strcpy( si->shaderText, shaderText );
//% if( VectorLength( si->vecs[ 0 ] ) )
//% Sys_Printf( "%s\n", shaderText );
}
/* ydnar: clear shader text buffer */
shaderText[ 0 ] = '\0';
/* test for end of file */
if( !GetToken( qtrue ) )
break;
/* shader name is initial token */
si = AllocShaderInfo();
strcpy( si->shader, token );
/* ignore ":q3map" suffix */
suffix = strstr( si->shader, ":q3map" );
if( suffix != NULL )
*suffix = '\0';
/* handle { } section */
if( !GetTokenAppend( shaderText, qtrue ) )
break;
if( strcmp( token, "{" ) )
{
if( si != NULL )
Error( "ParseShaderFile(): %s, line %d: { not found!\nFound instead: %s\nLast known shader: %s",
filename, scriptline, token, si->shader );
else
Error( "ParseShaderFile(): %s, line %d: { not found!\nFound instead: %s",
filename, scriptline, token );
}
while( 1 )
{
/* get the next token */
if( !GetTokenAppend( shaderText, qtrue ) )
break;
if( !strcmp( token, "}" ) )
break;
/* -----------------------------------------------------------------
shader stages (passes)
----------------------------------------------------------------- */
/* parse stage directives */
if( !strcmp( token, "{" ) )
{
si->hasPasses = qtrue;
while( 1 )
{
if( !GetTokenAppend( shaderText, qtrue ) )
break;
if( !strcmp( token, "}" ) )
break;