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shaders.c
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/* -------------------------------------------------------------------------------
Copyright (C) 1999-2006 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"
#include "kmap2.h" //add hypov8
/*
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);
add[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_COLOR_DOT_PRODUCT_SCALE:
c = DotProduct(dv->normal, cm2->data);
c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
VectorSet(mult, c, c, c);
break;
case CM_ALPHA_DOT_PRODUCT:
mult[3] = DotProduct(dv->normal, cm2->data);
break;
case CM_ALPHA_DOT_PRODUCT_SCALE:
c = DotProduct(dv->normal, cm2->data);
c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
mult[3] = c;
break;
case CM_COLOR_DOT_PRODUCT_2:
c = DotProduct(dv->normal, cm2->data);
c *= c;
VectorSet(mult, c, c, c);
break;
case CM_COLOR_DOT_PRODUCT_2_SCALE:
c = DotProduct(dv->normal, cm2->data);
c *= c;
c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
VectorSet(mult, c, c, c);
break;
case CM_ALPHA_DOT_PRODUCT_2:
mult[3] = DotProduct(dv->normal, cm2->data);
mult[3] *= mult[3];
break;
case CM_ALPHA_DOT_PRODUCT_2_SCALE:
c = DotProduct(dv->normal, cm2->data);
c *= c;
c = (c - cm2->data[3]) / (cm2->data[4] - cm2->data[3]);
mult[3] = c;
break;
default:
break;
}
/* apply mod */
for(j = 0; j < MAX_LIGHTMAPS; j++)
{
for(k = 0; k < 4; k++)
{
c = (mult[k] * dv->lightColor[j][k]) + add[k];
if(c < 0)
c = 0;
else if(c > 255)
c = 255;
dv->lightColor[j][k] = c;
}
}
}
}
}
/*
hypov8 add
change vertex alpha scale from 0-255 to 0-1
should this be done on the engine side?
*/
#if 0
void VertexAlphaFloat(colorMod_t * cm, int numVerts, bspDrawVert_t * drawVerts)
{
int i, k;
float c;
bspDrawVert_t *dv;
//colorMod_t *cm2;
/* skip if colormod has been applied */
if (cm && cm->type == CM_ALPHA_SET)
return;
/* dummy check */
if(numVerts < 1 || drawVerts == NULL)
return;
/* walk vertex list */
for(i = 0; i < numVerts; i++)
{
/* get vertex */
dv = &drawVerts[i];
/* loop through alpha verts */
for(k = 0; k < 4; k++)
{
c = dv->lightColor[k][3];
/* check what scale alpha value is in 0>255?? */
if (c > 0.f && c < 1.0f || c > 255)
printf("alpha out of range %f \n", c);
/* set min/max if wrong*/
if(c < 0)
c = 0;
else if(c > 255)
c = 255;
/* scale to 0-1 */
c = c/ 255;
/* set vert alpha */
dv->lightColor[k][3] = c;
}
}
}
#endif
/*
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]);
//remove "/map/"
len--;
while(len > 0 && base[len] != '/' && base[len] != '\\')
len--;
if(len <= 0)
return;
//set base game
base[len] = '\0';
/* append /scripts/xmap2_<mapname>.shader */
sprintf(mapShaderFile, "%s/%s/kmap2_%s.mtr", 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
*/
#if 0 //def KMAP2
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 KMap2\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);
}
#endif
/*
CustomShader() - ydnar
sets up a custom map shader
*/
#if 0
shaderInfo_t *CustomShader(shaderInfo_t * si, char *find, char *replace)
{
shaderInfo_t *csi;
char shader[MAX_QPATH];
char *s;
int loc;
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"
"\txmap_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"
"\txmap_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" "\txmap_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"
"\txmap_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 md4 hash of the shader text */
Com_BlockFullChecksum(shaderText, strlen(shaderText), 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;
}
#endif
/*
EmitVertexRemapShader()
adds a vertexremapshader key/value pair to worldspawn
*/
#if 0
void EmitVertexRemapShader(char *from, char *to)
{
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 md4 hash */
Com_BlockFullChecksum(value, strlen(value), 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);
}
#endif
/*
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);
/* hypov8 add diffusemap to search paths. Is this ok above light image? incase alphashadow? */
if(si->shaderImage == NULL)
si->shaderImage = ImageLoad(si->diffuseImagePath);
/* 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);
}
else
{
VectorCopy(si->color, si->averageColor);
}
}
/*
ShaderInfoForShader()
finds a shaderinfo for a named shader
*/
#define MAX_SHADER_DEPRECATION_DEPTH 16
shaderInfo_t *ShaderInfoForShader(const char *shaderName)
{
int i;
int deprecationDepth;
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 */
deprecationDepth = 0;
for(i = 0; i < numShaderInfo; i++)
{
si = &shaderInfo[i];
if(!Q_stricmp(shader, si->shader))
{
/* check if shader is deprecated */
if(deprecationDepth < MAX_SHADER_DEPRECATION_DEPTH && si->deprecateShader && si->deprecateShader[0])
{
/* override name */
strcpy(shader, si->deprecateShader);
StripExtension(shader);
/* increase deprecation depth */
deprecationDepth++;
if(deprecationDepth == MAX_SHADER_DEPRECATION_DEPTH)
Sys_Printf("WARNING: Max deprecation depth of %i is reached on shader '%s'\n", MAX_SHADER_DEPRECATION_DEPTH,
shader);
/* search again from beginning */
i = -1;
continue;
}
/* 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 != GetLine())
{
strcat(buffer, "\n");
for(i = 0; i < tabDepth; i++)
strcat(buffer, "\t");
}
else
strcat(buffer, " ");
oldScriptLine = GetLine();
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!", GetLine());
for(i = 0; i < x; i++)
{
if(!GetTokenAppend(buffer, qfalse))
Error("Parse1DMatrixAppend(): line %d: Number not found!", GetLine());
m[i] = atof(token);
}
if(!GetTokenAppend(buffer, qtrue) || strcmp(token, ")"))
Error("Parse1DMatrixAppend(): line %d: ) not found!", GetLine());
}
/*
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?) hypov8 todo: MAX_SHADER_INFO*/
/* init */