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illusion-arena-engine/code/renderer_oa/tr_bsp.c
leilei- 513c538fba A bunch of things 
- s_interrupt - allows sounds to be interrupted by the same sound or entity channel
- new dynamic light calculation for vertex lighting, affecting vertex color (no projected dlight textures)
- rgbGen material for allowing calculation for diffuse, specular, emmissive vertex colors by hex values
- rgbMod shader command allowing new vertex color effects
- removed deprecated R_ParseStageSimple, it never worked as intended
- r_slowness gone. Use llvmpipe, PCem, or a slow computer instead.
- Spring cleaning of old deprecated/broken post-process GLSL experiments
- r_anime broke in 2015
- r_tvMode - well, shaderglass exists now
- r_motionblur - Bad technique, too much memory
- t_pslettize - slow, relies on shader's lookup of a vector table
- r_film - bad on well-lit maps
- r_retroAA - this broke early too. also looked bad. would rather implement FSAA 4x
- cl_consoleScale : makes the console more 640x480 sized on any higher res. Also affects notify messages, so you can read chat easier
- cl_consoleColor also affects the line at the bottom. Also new default colors
- If consoleShader can't load (which will happen with some mods), it will fallback to a flat-colored console.
- Generic'd the red/blue team names.  We will not be having missionpack clans.
- SDL2: Clicking the red X now does something: you can leave!!! If it sucks.... hit da bricks!! real winners quit
- s_xmp_startPattern - makes the tracker song play a different pattern (for use with sub-songs)
- fixed xmp playback as xmp explicitly requires a length of the module now. Fixes issue #96
- suppress the warning about non-22khz music, as mods are playing at the mixer's rate always, and this warning regards a much earlier (1999) unstable sound mixer.
- deprecating r_modelshader because the shader got stale, old, buggy, and amd hates it now
- r_shadeMethod will be something else (and not shader-based)
- r_lightmapColorNorm : Make normalization of bright luxels an option, default is 1 (q3 behavior).
- r_lightmapColorNorm 0 = no normalization, straight clamp, like Nightdive's vision of Quake2
- r_lightmapColorNorm 2 = experiment: normalize, but add some luminance on while maintaining the hue by normalizing again. This tries to restore more range on fully saturated colors
- dropped SHADER_MAX_VERTEXES back to 1000 because raising it causes various unexpected issues, so dialing it down for now
- raise MAX_IMAGE_ANIMATIONS to 16 because I've got a cool water shader using it and 8 is too choppy
- Crash fix for older (<=2001) mods by trimming the string shared with ui module, so no overflow for them
- jettisoning old proposed mme particle system that was never ever hooked up properly.
- other small warning cleanup
- r_shadeMethod : 0/1 = q3 behavior, 2 = ue1-ish behavior, 3 = mix of 1 and 2, -1 = one uniform color, 150-666 = a lod range to change between the 3
- r_monolightmaps : refactor - goes to the light data instead of the calculations and images
- removed r_greyscale because this is a data-modifying novelty that would complicate support for loading compressed texture formats. This is better off as a post-process shader
- environment mapping refactor, rewrite and cleanup
- removed a lot of deprecated rgbGens
- removed r_texdump (it never worked)
- remove a few leftover broken postprocess things
- Internal GLSL brightness shader, so gamma control can work without the glsl/brightness_fp.glsl file when r_ext_vertex_shader is 1 and r_alternateBrightness is 2.
- r_skyTess - an attempt to make the complexity of skydomes an option so it could use less polygons. Has no effect on skyboxes
2025-05-20 06:30:51 -04:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code 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.
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
// tr_map.c
#include "tr_local.h"
/*
Loads and prepares a map file for scene rendering.
A single entry point:
void RE_LoadWorldMap( const char *name );
*/
static world_t s_worldData;
static byte *fileBase;
int c_subdivisions;
int c_gridVerts;
int ismaptexture;
//===============================================================================
static void HSVtoRGB( float h, float s, float v, float rgb[3] )
{
int i;
float f;
float p, q, t;
h *= 5;
i = floor( h );
f = h - i;
p = v * ( 1 - s );
q = v * ( 1 - s * f );
t = v * ( 1 - s * ( 1 - f ) );
switch ( i )
{
case 0:
rgb[0] = v;
rgb[1] = t;
rgb[2] = p;
break;
case 1:
rgb[0] = q;
rgb[1] = v;
rgb[2] = p;
break;
case 2:
rgb[0] = p;
rgb[1] = v;
rgb[2] = t;
break;
case 3:
rgb[0] = p;
rgb[1] = q;
rgb[2] = v;
break;
case 4:
rgb[0] = t;
rgb[1] = p;
rgb[2] = v;
break;
case 5:
rgb[0] = v;
rgb[1] = p;
rgb[2] = q;
break;
}
}
/*
===============
R_ColorShiftLightingBytes
===============
*/
static void R_ColorShiftLightingBytes( byte in[4], byte out[4] ) {
int shift, r, g, b;
// shift the color data based on overbright range
shift = r_mapOverBrightBits->integer - tr.overbrightBits;
// shift the data based on overbright range
r = in[0] << shift;
g = in[1] << shift;
b = in[2] << shift;
// leilei - handle light desaturation here instead, so we can also mono the lightgrid and have one less redundant clamp
if( r_monolightmaps->value > 0)
{
float saturated = (r * 0.22126) + (g * 0.7152) + (b * 0.0722);
float ml = r_monolightmaps->value; // sanitize
if (ml>1) ml=1; if (ml<0) ml=0;
r = saturated + (r - saturated) * ( 1-ml );
g = saturated + (g - saturated) * ( 1-ml );
b = saturated + (b - saturated) * ( 1-ml );
}
if (r_lightmapColorNorm->integer == 2) // leilei
{
float lum, invader = 0;
// get luma from base color
lum = (0.22126*r + 0.7152*g + 0.0722*b); // thanks wiki
// normalize by color instead of saturating to white
if ( ( r | g | b ) > 255 ) {
int max;
max = r > g ? r : g;
max = max > b ? max : b;
r = r * 255 / max;
g = g * 255 / max;
b = b * 255 / max;
invader = lum - (0.22126*r + 0.7152*g + 0.0722*b); // get the differences from the normalized color
invader *= (invader/255);
r += invader;
g += invader;
b += invader;
// Normalize... again!!!
max = r > g ? r : g;
max = max > b ? max : b;
r = r * 255 / max;
g = g * 255 / max;
b = b * 255 / max;
}
}
else if (r_lightmapColorNorm->integer) // leilei - made this an option for trying normal clamp
{
// normalize by color instead of saturating to white
if ( ( r | g | b ) > 255 ) {
int max;
max = r > g ? r : g;
max = max > b ? max : b;
r = r * 255 / max;
g = g * 255 / max;
b = b * 255 / max;
}
}
else
{
if ( r > 255 ) r = 255;
if ( g > 255 ) g = 255;
if ( b > 255 ) b = 255;
}
out[0] = r;
out[1] = g;
out[2] = b;
out[3] = in[3];
}
/*
===============
R_LoadLightmaps
===============
*/
#define LIGHTMAP_SIZE 128
static void R_LoadLightmaps( lump_t *l ) {
byte *buf, *buf_p;
int len;
byte image[LIGHTMAP_SIZE*LIGHTMAP_SIZE*4];
int i, j;
float maxIntensity = 0;
double sumIntensity = 0;
len = l->filelen;
if ( !len ) {
return;
}
buf = fileBase + l->fileofs;
// we are about to upload textures
R_IssuePendingRenderCommands();
// create all the lightmaps
tr.numLightmaps = len / (LIGHTMAP_SIZE * LIGHTMAP_SIZE * 3);
if ( tr.numLightmaps == 1 ) {
//FIXME: HACK: maps with only one lightmap turn up fullbright for some reason.
//this avoids this, but isn't the correct solution.
tr.numLightmaps++;
}
// if we are in r_vertexLight mode, we don't need the lightmaps at all
if ( r_vertexLight->integer || glConfig.hardwareType == GLHW_PERMEDIA2 ) {
return;
}
tr.lightmaps = ri.Hunk_Alloc( tr.numLightmaps * sizeof(image_t *), h_low );
for ( i = 0 ; i < tr.numLightmaps ; i++ ) {
// expand the 24 bit on-disk to 32 bit
buf_p = buf + i * LIGHTMAP_SIZE*LIGHTMAP_SIZE * 3;
if ( r_lightmap->integer == 2 )
{ // color code by intensity as development tool (FIXME: check range)
for ( j = 0; j < LIGHTMAP_SIZE * LIGHTMAP_SIZE; j++ )
{
float r = buf_p[j*3+0];
float g = buf_p[j*3+1];
float b = buf_p[j*3+2];
float intensity;
float out[3] = {0.0, 0.0, 0.0};
intensity = 0.33f * r + 0.685f * g + 0.063f * b;
if ( intensity > 255 )
intensity = 1.0f;
else
intensity /= 255.0f;
if ( intensity > maxIntensity )
maxIntensity = intensity;
HSVtoRGB( intensity, 1.00, 0.50, out );
image[j*4+0] = out[0] * 255;
image[j*4+1] = out[1] * 255;
image[j*4+2] = out[2] * 255;
image[j*4+3] = 255;
sumIntensity += intensity;
}
} else {
for ( j = 0 ; j < LIGHTMAP_SIZE * LIGHTMAP_SIZE; j++ ) {
R_ColorShiftLightingBytes( &buf_p[j*3], &image[j*4] );
image[j*4+3] = 255;
}
}
tr.lightmaps[i] = R_CreateImage( va("*lightmap%d",i), image,
LIGHTMAP_SIZE, LIGHTMAP_SIZE, IMGTYPE_COLORALPHA,
IMGFLAG_NOLIGHTSCALE | IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, 0 );
}
if ( r_lightmap->integer == 2 ) {
ri.Printf( PRINT_ALL, "Brightest lightmap value: %d\n", ( int ) ( maxIntensity * 255 ) );
}
}
/*
=================
RE_SetWorldVisData
This is called by the clipmodel subsystem so we can share the 1.8 megs of
space in big maps...
=================
*/
void RE_SetWorldVisData( const byte *vis ) {
tr.externalVisData = vis;
}
/*
=================
R_LoadVisibility
=================
*/
static void R_LoadVisibility( lump_t *l ) {
int len;
byte *buf;
len = ( s_worldData.numClusters + 63 ) & ~63;
s_worldData.novis = ri.Hunk_Alloc( len, h_low );
Com_Memset( s_worldData.novis, 0xff, len );
len = l->filelen;
if ( !len ) {
return;
}
buf = fileBase + l->fileofs;
s_worldData.numClusters = LittleLong( ((int *)buf)[0] );
s_worldData.clusterBytes = LittleLong( ((int *)buf)[1] );
// CM_Load should have given us the vis data to share, so
// we don't need to allocate another copy
if ( tr.externalVisData ) {
s_worldData.vis = tr.externalVisData;
} else {
byte *dest;
dest = ri.Hunk_Alloc( len - 8, h_low );
Com_Memcpy( dest, buf + 8, len - 8 );
s_worldData.vis = dest;
}
}
//===============================================================================
/*
===============
ShaderForShaderNum
===============
*/
static shader_t *ShaderForShaderNum( int shaderNum, int lightmapNum ) {
shader_t *shader;
dshader_t *dsh;
int _shaderNum = LittleLong( shaderNum );
if ( _shaderNum < 0 || _shaderNum >= s_worldData.numShaders ) {
ri.Error( ERR_DROP, "ShaderForShaderNum: bad num %i", _shaderNum );
}
dsh = &s_worldData.shaders[ _shaderNum ];
if ( r_vertexLight->integer || glConfig.hardwareType == GLHW_PERMEDIA2 ) {
lightmapNum = LIGHTMAP_BY_VERTEX;
}
if ( r_fullbright->integer ) {
lightmapNum = LIGHTMAP_WHITEIMAGE;
}
ismaptexture = 1;
shader = R_FindShader( dsh->shader, lightmapNum, qtrue );
// if the shader had errors, just use default shader
if ( shader->defaultShader ) {
// leilei - placeholder hack
if (tr.placeholderTextureAvail == 1 && !Q_strncmp( dsh->shader, "textures", 8 ))
{
shader = R_FindShader( "placeholder_texture", lightmapNum, qtrue );
return shader;
}
else if (tr.placeholderModelAvail == 1 && !Q_strncmp( dsh->shader, "models", 6 ))
{
return tr.placeholderModelShader;
}
return tr.defaultShader;
}
return shader;
}
/*
===============
ParseFace
===============
*/
static void ParseFace( dsurface_t *ds, drawVert_t *verts, msurface_t *surf, int *indexes ) {
int i, j;
srfSurfaceFace_t *cv;
int numPoints, numIndexes;
int lightmapNum;
int sfaceSize, ofsIndexes;
lightmapNum = LittleLong( ds->lightmapNum );
// get fog volume
surf->fogIndex = LittleLong( ds->fogNum ) + 1;
// get shader value
surf->shader = ShaderForShaderNum( ds->shaderNum, lightmapNum );
if ( r_singleShader->integer && !surf->shader->isSky ) {
surf->shader = tr.defaultShader;
}
numPoints = LittleLong( ds->numVerts );
if (numPoints > MAX_FACE_POINTS) {
ri.Printf( PRINT_WARNING, "WARNING: MAX_FACE_POINTS exceeded: %i\n", numPoints);
numPoints = MAX_FACE_POINTS;
surf->shader = tr.defaultShader;
}
numIndexes = LittleLong( ds->numIndexes );
// create the srfSurfaceFace_t
sfaceSize = ( size_t ) &((srfSurfaceFace_t *)0)->points[numPoints];
ofsIndexes = sfaceSize;
sfaceSize += sizeof( int ) * numIndexes;
cv = ri.Hunk_Alloc( sfaceSize, h_low );
cv->surfaceType = SF_FACE;
cv->numPoints = numPoints;
cv->numIndices = numIndexes;
cv->ofsIndices = ofsIndexes;
verts += LittleLong( ds->firstVert );
for ( i = 0 ; i < numPoints ; i++ ) {
for ( j = 0 ; j < 3 ; j++ ) {
cv->points[i][j] = LittleFloat( verts[i].xyz[j] );
}
for ( j = 0 ; j < 2 ; j++ ) {
cv->points[i][3+j] = LittleFloat( verts[i].st[j] );
cv->points[i][5+j] = LittleFloat( verts[i].lightmap[j] );
}
R_ColorShiftLightingBytes( verts[i].color, (byte *)&cv->points[i][7] );
}
indexes += LittleLong( ds->firstIndex );
for ( i = 0 ; i < numIndexes ; i++ ) {
((int *)((byte *)cv + cv->ofsIndices ))[i] = LittleLong( indexes[ i ] );
}
// take the plane information from the lightmap vector
for ( i = 0 ; i < 3 ; i++ ) {
cv->plane.normal[i] = LittleFloat( ds->lightmapVecs[2][i] );
}
cv->plane.dist = DotProduct( cv->points[0], cv->plane.normal );
SetPlaneSignbits( &cv->plane );
cv->plane.type = PlaneTypeForNormal( cv->plane.normal );
surf->data = (surfaceType_t *)cv;
}
/*
===============
ParseMesh
===============
*/
static void ParseMesh ( dsurface_t *ds, drawVert_t *verts, msurface_t *surf ) {
srfGridMesh_t *grid;
int i, j;
int width, height, numPoints;
drawVert_t points[MAX_PATCH_SIZE*MAX_PATCH_SIZE];
int lightmapNum;
vec3_t bounds[2];
vec3_t tmpVec;
static surfaceType_t skipData = SF_SKIP;
lightmapNum = LittleLong( ds->lightmapNum );
// get fog volume
surf->fogIndex = LittleLong( ds->fogNum ) + 1;
// get shader value
surf->shader = ShaderForShaderNum( ds->shaderNum, lightmapNum );
if ( r_singleShader->integer && !surf->shader->isSky ) {
surf->shader = tr.defaultShader;
}
// we may have a nodraw surface, because they might still need to
// be around for movement clipping
if ( s_worldData.shaders[ LittleLong( ds->shaderNum ) ].surfaceFlags & SURF_NODRAW ) {
surf->data = &skipData;
return;
}
width = LittleLong( ds->patchWidth );
height = LittleLong( ds->patchHeight );
verts += LittleLong( ds->firstVert );
numPoints = width * height;
for ( i = 0 ; i < numPoints ; i++ ) {
for ( j = 0 ; j < 3 ; j++ ) {
points[i].xyz[j] = LittleFloat( verts[i].xyz[j] );
points[i].normal[j] = LittleFloat( verts[i].normal[j] );
}
for ( j = 0 ; j < 2 ; j++ ) {
points[i].st[j] = LittleFloat( verts[i].st[j] );
points[i].lightmap[j] = LittleFloat( verts[i].lightmap[j] );
}
R_ColorShiftLightingBytes( verts[i].color, points[i].color );
}
// pre-tesseleate
grid = R_SubdividePatchToGrid( width, height, points );
surf->data = (surfaceType_t *)grid;
// copy the level of detail origin, which is the center
// of the group of all curves that must subdivide the same
// to avoid cracking
for ( i = 0 ; i < 3 ; i++ ) {
bounds[0][i] = LittleFloat( ds->lightmapVecs[0][i] );
bounds[1][i] = LittleFloat( ds->lightmapVecs[1][i] );
}
VectorAdd( bounds[0], bounds[1], bounds[1] );
VectorScale( bounds[1], 0.5f, grid->lodOrigin );
VectorSubtract( bounds[0], grid->lodOrigin, tmpVec );
grid->lodRadius = VectorLength( tmpVec );
}
/*
===============
ParseTriSurf
===============
*/
static void ParseTriSurf( dsurface_t *ds, drawVert_t *verts, msurface_t *surf, int *indexes ) {
srfTriangles_t *tri;
int i, j;
int numVerts, numIndexes;
// get fog volume
surf->fogIndex = LittleLong( ds->fogNum ) + 1;
// get shader
surf->shader = ShaderForShaderNum( ds->shaderNum, LIGHTMAP_BY_VERTEX );
if ( r_singleShader->integer && !surf->shader->isSky ) {
surf->shader = tr.defaultShader;
}
numVerts = LittleLong( ds->numVerts );
numIndexes = LittleLong( ds->numIndexes );
tri = ri.Hunk_Alloc( sizeof( *tri ) + numVerts * sizeof( tri->verts[0] )
+ numIndexes * sizeof( tri->indexes[0] ), h_low );
tri->surfaceType = SF_TRIANGLES;
tri->numVerts = numVerts;
tri->numIndexes = numIndexes;
tri->verts = (drawVert_t *)(tri + 1);
tri->indexes = (int *)(tri->verts + tri->numVerts );
surf->data = (surfaceType_t *)tri;
// copy vertexes
ClearBounds( tri->bounds[0], tri->bounds[1] );
verts += LittleLong( ds->firstVert );
for ( i = 0 ; i < numVerts ; i++ ) {
for ( j = 0 ; j < 3 ; j++ ) {
tri->verts[i].xyz[j] = LittleFloat( verts[i].xyz[j] );
tri->verts[i].normal[j] = LittleFloat( verts[i].normal[j] );
}
AddPointToBounds( tri->verts[i].xyz, tri->bounds[0], tri->bounds[1] );
for ( j = 0 ; j < 2 ; j++ ) {
tri->verts[i].st[j] = LittleFloat( verts[i].st[j] );
tri->verts[i].lightmap[j] = LittleFloat( verts[i].lightmap[j] );
}
R_ColorShiftLightingBytes( verts[i].color, tri->verts[i].color );
}
// copy indexes
indexes += LittleLong( ds->firstIndex );
for ( i = 0 ; i < numIndexes ; i++ ) {
tri->indexes[i] = LittleLong( indexes[i] );
if ( tri->indexes[i] < 0 || tri->indexes[i] >= numVerts ) {
ri.Error( ERR_DROP, "Bad index in triangle surface" );
}
}
}
/*
===============
ParseFlare
===============
*/
static void ParseFlare( dsurface_t *ds, drawVert_t *verts, msurface_t *surf, int *indexes ) {
srfFlare_t *flare;
int i;
// get fog volume
surf->fogIndex = LittleLong( ds->fogNum ) + 1;
// get shader
surf->shader = ShaderForShaderNum( ds->shaderNum, LIGHTMAP_BY_VERTEX );
if ( r_singleShader->integer && !surf->shader->isSky ) {
surf->shader = tr.defaultShader;
}
flare = ri.Hunk_Alloc( sizeof( *flare ), h_low );
flare->surfaceType = SF_FLARE;
flare->shadder = surf->shader; // leilei - custom flare textures
surf->data = (surfaceType_t *)flare;
for ( i = 0 ; i < 3 ; i++ ) {
flare->origin[i] = LittleFloat( ds->lightmapOrigin[i] );
flare->color[i] = LittleFloat( ds->lightmapVecs[0][i] );
flare->normal[i] = LittleFloat( ds->lightmapVecs[2][i] );
}
}
/*
=================
R_MergedWidthPoints
returns true if there are grid points merged on a width edge
=================
*/
int R_MergedWidthPoints(srfGridMesh_t *grid, int offset) {
int i, j;
for (i = 1; i < grid->width-1; i++) {
for (j = i + 1; j < grid->width-1; j++) {
if ( fabs(grid->verts[i + offset].xyz[0] - grid->verts[j + offset].xyz[0]) > .1) continue;
if ( fabs(grid->verts[i + offset].xyz[1] - grid->verts[j + offset].xyz[1]) > .1) continue;
if ( fabs(grid->verts[i + offset].xyz[2] - grid->verts[j + offset].xyz[2]) > .1) continue;
return qtrue;
}
}
return qfalse;
}
/*
=================
R_MergedHeightPoints
returns true if there are grid points merged on a height edge
=================
*/
int R_MergedHeightPoints(srfGridMesh_t *grid, int offset) {
int i, j;
for (i = 1; i < grid->height-1; i++) {
for (j = i + 1; j < grid->height-1; j++) {
if ( fabs(grid->verts[grid->width * i + offset].xyz[0] - grid->verts[grid->width * j + offset].xyz[0]) > .1) continue;
if ( fabs(grid->verts[grid->width * i + offset].xyz[1] - grid->verts[grid->width * j + offset].xyz[1]) > .1) continue;
if ( fabs(grid->verts[grid->width * i + offset].xyz[2] - grid->verts[grid->width * j + offset].xyz[2]) > .1) continue;
return qtrue;
}
}
return qfalse;
}
/*
=================
R_FixSharedVertexLodError_r
NOTE: never sync LoD through grid edges with merged points!
FIXME: write generalized version that also avoids cracks between a patch and one that meets half way?
=================
*/
void R_FixSharedVertexLodError_r( int start, srfGridMesh_t *grid1 ) {
int j, k, l, m, n, offset1, offset2, touch;
srfGridMesh_t *grid2;
for ( j = start; j < s_worldData.numsurfaces; j++ ) {
//
grid2 = (srfGridMesh_t *) s_worldData.surfaces[j].data;
// if this surface is not a grid
if ( grid2->surfaceType != SF_GRID ) continue;
// if the LOD errors are already fixed for this patch
if ( grid2->lodFixed == 2 ) continue;
// grids in the same LOD group should have the exact same lod radius
if ( grid1->lodRadius != grid2->lodRadius ) continue;
// grids in the same LOD group should have the exact same lod origin
if ( grid1->lodOrigin[0] != grid2->lodOrigin[0] ) continue;
if ( grid1->lodOrigin[1] != grid2->lodOrigin[1] ) continue;
if ( grid1->lodOrigin[2] != grid2->lodOrigin[2] ) continue;
//
touch = qfalse;
for (n = 0; n < 2; n++) {
//
if (n) offset1 = (grid1->height-1) * grid1->width;
else offset1 = 0;
if (R_MergedWidthPoints(grid1, offset1)) continue;
for (k = 1; k < grid1->width-1; k++) {
for (m = 0; m < 2; m++) {
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
if (R_MergedWidthPoints(grid2, offset2)) continue;
for ( l = 1; l < grid2->width-1; l++) {
//
if ( fabs(grid1->verts[k + offset1].xyz[0] - grid2->verts[l + offset2].xyz[0]) > .1) continue;
if ( fabs(grid1->verts[k + offset1].xyz[1] - grid2->verts[l + offset2].xyz[1]) > .1) continue;
if ( fabs(grid1->verts[k + offset1].xyz[2] - grid2->verts[l + offset2].xyz[2]) > .1) continue;
// ok the points are equal and should have the same lod error
grid2->widthLodError[l] = grid1->widthLodError[k];
touch = qtrue;
}
}
for (m = 0; m < 2; m++) {
if (m) offset2 = grid2->width-1;
else offset2 = 0;
if (R_MergedHeightPoints(grid2, offset2)) continue;
for ( l = 1; l < grid2->height-1; l++) {
//
if ( fabs(grid1->verts[k + offset1].xyz[0] - grid2->verts[grid2->width * l + offset2].xyz[0]) > .1) continue;
if ( fabs(grid1->verts[k + offset1].xyz[1] - grid2->verts[grid2->width * l + offset2].xyz[1]) > .1) continue;
if ( fabs(grid1->verts[k + offset1].xyz[2] - grid2->verts[grid2->width * l + offset2].xyz[2]) > .1) continue;
// ok the points are equal and should have the same lod error
grid2->heightLodError[l] = grid1->widthLodError[k];
touch = qtrue;
}
}
}
}
for (n = 0; n < 2; n++) {
//
if (n) offset1 = grid1->width-1;
else offset1 = 0;
if (R_MergedHeightPoints(grid1, offset1)) continue;
for (k = 1; k < grid1->height-1; k++) {
for (m = 0; m < 2; m++) {
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
if (R_MergedWidthPoints(grid2, offset2)) continue;
for ( l = 1; l < grid2->width-1; l++) {
//
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[0] - grid2->verts[l + offset2].xyz[0]) > .1) continue;
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[1] - grid2->verts[l + offset2].xyz[1]) > .1) continue;
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[2] - grid2->verts[l + offset2].xyz[2]) > .1) continue;
// ok the points are equal and should have the same lod error
grid2->widthLodError[l] = grid1->heightLodError[k];
touch = qtrue;
}
}
for (m = 0; m < 2; m++) {
if (m) offset2 = grid2->width-1;
else offset2 = 0;
if (R_MergedHeightPoints(grid2, offset2)) continue;
for ( l = 1; l < grid2->height-1; l++) {
//
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[0] - grid2->verts[grid2->width * l + offset2].xyz[0]) > .1) continue;
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[1] - grid2->verts[grid2->width * l + offset2].xyz[1]) > .1) continue;
if ( fabs(grid1->verts[grid1->width * k + offset1].xyz[2] - grid2->verts[grid2->width * l + offset2].xyz[2]) > .1) continue;
// ok the points are equal and should have the same lod error
grid2->heightLodError[l] = grid1->heightLodError[k];
touch = qtrue;
}
}
}
}
if (touch) {
grid2->lodFixed = 2;
R_FixSharedVertexLodError_r ( start, grid2 );
//NOTE: this would be correct but makes things really slow
//grid2->lodFixed = 1;
}
}
}
/*
=================
R_FixSharedVertexLodError
This function assumes that all patches in one group are nicely stitched together for the highest LoD.
If this is not the case this function will still do its job but won't fix the highest LoD cracks.
=================
*/
void R_FixSharedVertexLodError( void ) {
int i;
srfGridMesh_t *grid1;
for ( i = 0; i < s_worldData.numsurfaces; i++ ) {
//
grid1 = (srfGridMesh_t *) s_worldData.surfaces[i].data;
// if this surface is not a grid
if ( grid1->surfaceType != SF_GRID )
continue;
//
if ( grid1->lodFixed )
continue;
//
grid1->lodFixed = 2;
// recursively fix other patches in the same LOD group
R_FixSharedVertexLodError_r( i + 1, grid1);
}
}
/*
===============
R_StitchPatches
===============
*/
int R_StitchPatches( int grid1num, int grid2num ) {
float *v1, *v2;
srfGridMesh_t *grid1, *grid2;
int k, l, m, n, offset1, offset2, row, column;
grid1 = (srfGridMesh_t *) s_worldData.surfaces[grid1num].data;
grid2 = (srfGridMesh_t *) s_worldData.surfaces[grid2num].data;
for (n = 0; n < 2; n++) {
//
if (n) offset1 = (grid1->height-1) * grid1->width;
else offset1 = 0;
if (R_MergedWidthPoints(grid1, offset1))
continue;
for (k = 0; k < grid1->width-2; k += 2) {
for (m = 0; m < 2; m++) {
if ( grid2->width >= MAX_GRID_SIZE )
break;
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
for ( l = 0; l < grid2->width-1; l++) {
//
v1 = grid1->verts[k + offset1].xyz;
v2 = grid2->verts[l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[k + 2 + offset1].xyz;
v2 = grid2->verts[l + 1 + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[l + offset2].xyz;
v2 = grid2->verts[l + 1 + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert column into grid2 right after after column l
if (m) row = grid2->height-1;
else row = 0;
grid2 = R_GridInsertColumn( grid2, l+1, row,
grid1->verts[k + 1 + offset1].xyz, grid1->widthLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
for (m = 0; m < 2; m++) {
if (grid2->height >= MAX_GRID_SIZE)
break;
if (m) offset2 = grid2->width-1;
else offset2 = 0;
for ( l = 0; l < grid2->height-1; l++) {
//
v1 = grid1->verts[k + offset1].xyz;
v2 = grid2->verts[grid2->width * l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[k + 2 + offset1].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[grid2->width * l + offset2].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert row into grid2 right after after row l
if (m) column = grid2->width-1;
else column = 0;
grid2 = R_GridInsertRow( grid2, l+1, column,
grid1->verts[k + 1 + offset1].xyz, grid1->widthLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
}
}
for (n = 0; n < 2; n++) {
//
if (n) offset1 = grid1->width-1;
else offset1 = 0;
if (R_MergedHeightPoints(grid1, offset1))
continue;
for (k = 0; k < grid1->height-2; k += 2) {
for (m = 0; m < 2; m++) {
if ( grid2->width >= MAX_GRID_SIZE )
break;
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
for ( l = 0; l < grid2->width-1; l++) {
//
v1 = grid1->verts[grid1->width * k + offset1].xyz;
v2 = grid2->verts[l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[grid1->width * (k + 2) + offset1].xyz;
v2 = grid2->verts[l + 1 + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[l + offset2].xyz;
v2 = grid2->verts[(l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert column into grid2 right after after column l
if (m) row = grid2->height-1;
else row = 0;
grid2 = R_GridInsertColumn( grid2, l+1, row,
grid1->verts[grid1->width * (k + 1) + offset1].xyz, grid1->heightLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
for (m = 0; m < 2; m++) {
if (grid2->height >= MAX_GRID_SIZE)
break;
if (m) offset2 = grid2->width-1;
else offset2 = 0;
for ( l = 0; l < grid2->height-1; l++) {
//
v1 = grid1->verts[grid1->width * k + offset1].xyz;
v2 = grid2->verts[grid2->width * l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[grid1->width * (k + 2) + offset1].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[grid2->width * l + offset2].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert row into grid2 right after after row l
if (m) column = grid2->width-1;
else column = 0;
grid2 = R_GridInsertRow( grid2, l+1, column,
grid1->verts[grid1->width * (k + 1) + offset1].xyz, grid1->heightLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
}
}
for (n = 0; n < 2; n++) {
//
if (n) offset1 = (grid1->height-1) * grid1->width;
else offset1 = 0;
if (R_MergedWidthPoints(grid1, offset1))
continue;
for (k = grid1->width-1; k > 1; k -= 2) {
for (m = 0; m < 2; m++) {
if ( grid2->width >= MAX_GRID_SIZE )
break;
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
for ( l = 0; l < grid2->width-1; l++) {
//
v1 = grid1->verts[k + offset1].xyz;
v2 = grid2->verts[l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[k - 2 + offset1].xyz;
v2 = grid2->verts[l + 1 + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[l + offset2].xyz;
v2 = grid2->verts[(l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert column into grid2 right after after column l
if (m) row = grid2->height-1;
else row = 0;
grid2 = R_GridInsertColumn( grid2, l+1, row,
grid1->verts[k - 1 + offset1].xyz, grid1->widthLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
for (m = 0; m < 2; m++) {
if (grid2->height >= MAX_GRID_SIZE)
break;
if (m) offset2 = grid2->width-1;
else offset2 = 0;
for ( l = 0; l < grid2->height-1; l++) {
//
v1 = grid1->verts[k + offset1].xyz;
v2 = grid2->verts[grid2->width * l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[k - 2 + offset1].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[grid2->width * l + offset2].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert row into grid2 right after after row l
if (m) column = grid2->width-1;
else column = 0;
grid2 = R_GridInsertRow( grid2, l+1, column,
grid1->verts[k - 1 + offset1].xyz, grid1->widthLodError[k+1]);
if (!grid2)
break;
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
}
}
for (n = 0; n < 2; n++) {
//
if (n) offset1 = grid1->width-1;
else offset1 = 0;
if (R_MergedHeightPoints(grid1, offset1))
continue;
for (k = grid1->height-1; k > 1; k -= 2) {
for (m = 0; m < 2; m++) {
if ( grid2->width >= MAX_GRID_SIZE )
break;
if (m) offset2 = (grid2->height-1) * grid2->width;
else offset2 = 0;
for ( l = 0; l < grid2->width-1; l++) {
//
v1 = grid1->verts[grid1->width * k + offset1].xyz;
v2 = grid2->verts[l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[grid1->width * (k - 2) + offset1].xyz;
v2 = grid2->verts[l + 1 + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[l + offset2].xyz;
v2 = grid2->verts[(l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert column into grid2 right after after column l
if (m) row = grid2->height-1;
else row = 0;
grid2 = R_GridInsertColumn( grid2, l+1, row,
grid1->verts[grid1->width * (k - 1) + offset1].xyz, grid1->heightLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
for (m = 0; m < 2; m++) {
if (grid2->height >= MAX_GRID_SIZE)
break;
if (m) offset2 = grid2->width-1;
else offset2 = 0;
for ( l = 0; l < grid2->height-1; l++) {
//
v1 = grid1->verts[grid1->width * k + offset1].xyz;
v2 = grid2->verts[grid2->width * l + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
v1 = grid1->verts[grid1->width * (k - 2) + offset1].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) > .1)
continue;
if ( fabs(v1[1] - v2[1]) > .1)
continue;
if ( fabs(v1[2] - v2[2]) > .1)
continue;
//
v1 = grid2->verts[grid2->width * l + offset2].xyz;
v2 = grid2->verts[grid2->width * (l + 1) + offset2].xyz;
if ( fabs(v1[0] - v2[0]) < .01 &&
fabs(v1[1] - v2[1]) < .01 &&
fabs(v1[2] - v2[2]) < .01)
continue;
//
//ri.Printf( PRINT_ALL, "found highest LoD crack between two patches\n" );
// insert row into grid2 right after after row l
if (m) column = grid2->width-1;
else column = 0;
grid2 = R_GridInsertRow( grid2, l+1, column,
grid1->verts[grid1->width * (k - 1) + offset1].xyz, grid1->heightLodError[k+1]);
grid2->lodStitched = qfalse;
s_worldData.surfaces[grid2num].data = (void *) grid2;
return qtrue;
}
}
}
}
return qfalse;
}
/*
===============
R_TryStitchPatch
This function will try to stitch patches in the same LoD group together for the highest LoD.
Only single missing vertice cracks will be fixed.
Vertices will be joined at the patch side a crack is first found, at the other side
of the patch (on the same row or column) the vertices will not be joined and cracks
might still appear at that side.
===============
*/
int R_TryStitchingPatch( int grid1num ) {
int j, numstitches;
srfGridMesh_t *grid1, *grid2;
numstitches = 0;
grid1 = (srfGridMesh_t *) s_worldData.surfaces[grid1num].data;
for ( j = 0; j < s_worldData.numsurfaces; j++ ) {
//
grid2 = (srfGridMesh_t *) s_worldData.surfaces[j].data;
// if this surface is not a grid
if ( grid2->surfaceType != SF_GRID ) continue;
// grids in the same LOD group should have the exact same lod radius
if ( grid1->lodRadius != grid2->lodRadius ) continue;
// grids in the same LOD group should have the exact same lod origin
if ( grid1->lodOrigin[0] != grid2->lodOrigin[0] ) continue;
if ( grid1->lodOrigin[1] != grid2->lodOrigin[1] ) continue;
if ( grid1->lodOrigin[2] != grid2->lodOrigin[2] ) continue;
//
while (R_StitchPatches(grid1num, j))
{
numstitches++;
}
}
return numstitches;
}
/*
===============
R_StitchAllPatches
===============
*/
void R_StitchAllPatches( void ) {
int i, stitched, numstitches;
srfGridMesh_t *grid1;
numstitches = 0;
do
{
stitched = qfalse;
for ( i = 0; i < s_worldData.numsurfaces; i++ ) {
//
grid1 = (srfGridMesh_t *) s_worldData.surfaces[i].data;
// if this surface is not a grid
if ( grid1->surfaceType != SF_GRID )
continue;
//
if ( grid1->lodStitched )
continue;
//
grid1->lodStitched = qtrue;
stitched = qtrue;
//
numstitches += R_TryStitchingPatch( i );
}
}
while (stitched);
ri.Printf( PRINT_ALL, "stitched %d LoD cracks\n", numstitches );
}
/*
===============
R_MovePatchSurfacesToHunk
===============
*/
void R_MovePatchSurfacesToHunk(void) {
int i, size;
srfGridMesh_t *grid, *hunkgrid;
for ( i = 0; i < s_worldData.numsurfaces; i++ ) {
//
grid = (srfGridMesh_t *) s_worldData.surfaces[i].data;
// if this surface is not a grid
if ( grid->surfaceType != SF_GRID )
continue;
//
size = (grid->width * grid->height - 1) * sizeof( drawVert_t ) + sizeof( *grid );
hunkgrid = ri.Hunk_Alloc( size, h_low );
Com_Memcpy(hunkgrid, grid, size);
hunkgrid->widthLodError = ri.Hunk_Alloc( grid->width * 4, h_low );
Com_Memcpy( hunkgrid->widthLodError, grid->widthLodError, grid->width * 4 );
hunkgrid->heightLodError = ri.Hunk_Alloc( grid->height * 4, h_low );
Com_Memcpy( hunkgrid->heightLodError, grid->heightLodError, grid->height * 4 );
R_FreeSurfaceGridMesh( grid );
s_worldData.surfaces[i].data = (void *) hunkgrid;
}
}
/*
===============
R_LoadSurfaces
===============
*/
static void R_LoadSurfaces( lump_t *surfs, lump_t *verts, lump_t *indexLump ) {
dsurface_t *in;
msurface_t *out;
drawVert_t *dv;
int *indexes;
int count;
int numFaces, numMeshes, numTriSurfs, numFlares;
int i;
numFaces = 0;
numMeshes = 0;
numTriSurfs = 0;
numFlares = 0;
in = (void *)(fileBase + surfs->fileofs);
if (surfs->filelen % sizeof(*in))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
count = surfs->filelen / sizeof(*in);
dv = (void *)(fileBase + verts->fileofs);
if (verts->filelen % sizeof(*dv))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
indexes = (void *)(fileBase + indexLump->fileofs);
if ( indexLump->filelen % sizeof(*indexes))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
out = ri.Hunk_Alloc ( count * sizeof(*out), h_low );
s_worldData.surfaces = out;
s_worldData.numsurfaces = count;
for ( i = 0 ; i < count ; i++, in++, out++ ) {
switch ( LittleLong( in->surfaceType ) ) {
case MST_PATCH:
ParseMesh ( in, dv, out );
numMeshes++;
break;
case MST_TRIANGLE_SOUP:
ParseTriSurf( in, dv, out, indexes );
numTriSurfs++;
break;
case MST_PLANAR:
ParseFace( in, dv, out, indexes );
numFaces++;
break;
case MST_FLARE:
ParseFlare( in, dv, out, indexes );
numFlares++;
break;
default:
ri.Error( ERR_DROP, "Bad surfaceType" );
}
}
#ifdef PATCH_STITCHING
R_StitchAllPatches();
#endif
R_FixSharedVertexLodError();
#ifdef PATCH_STITCHING
R_MovePatchSurfacesToHunk();
#endif
ri.Printf( PRINT_ALL, "...loaded %d faces, %i meshes, %i trisurfs, %i flares\n",
numFaces, numMeshes, numTriSurfs, numFlares );
}
/*
=================
R_LoadSubmodels
=================
*/
static void R_LoadSubmodels( lump_t *l ) {
dmodel_t *in;
bmodel_t *out;
int i, j, count;
in = (void *)(fileBase + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
count = l->filelen / sizeof(*in);
s_worldData.bmodels = out = ri.Hunk_Alloc( count * sizeof(*out), h_low );
for ( i=0 ; i<count ; i++, in++, out++ ) {
model_t *model;
model = R_AllocModel();
assert( model != NULL ); // this should never happen
if ( model == NULL ) {
ri.Error(ERR_DROP, "R_LoadSubmodels: R_AllocModel() failed");
}
model->type = MOD_BRUSH;
model->bmodel = out;
Com_sprintf( model->name, sizeof( model->name ), "*%d", i );
for (j=0 ; j<3 ; j++) {
out->bounds[0][j] = LittleFloat (in->mins[j]);
out->bounds[1][j] = LittleFloat (in->maxs[j]);
}
out->firstSurface = s_worldData.surfaces + LittleLong( in->firstSurface );
out->numSurfaces = LittleLong( in->numSurfaces );
}
}
//==================================================================
/*
=================
R_SetParent
=================
*/
static void R_SetParent (mnode_t *node, mnode_t *parent)
{
node->parent = parent;
if (node->contents != -1)
return;
R_SetParent (node->children[0], node);
R_SetParent (node->children[1], node);
}
/*
=================
R_LoadNodesAndLeafs
=================
*/
static void R_LoadNodesAndLeafs (lump_t *nodeLump, lump_t *leafLump) {
int i, j, p;
dnode_t *in;
dleaf_t *inLeaf;
mnode_t *out;
int numNodes, numLeafs;
in = (void *)(fileBase + nodeLump->fileofs);
if (nodeLump->filelen % sizeof(dnode_t) ||
leafLump->filelen % sizeof(dleaf_t) ) {
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
}
numNodes = nodeLump->filelen / sizeof(dnode_t);
numLeafs = leafLump->filelen / sizeof(dleaf_t);
out = ri.Hunk_Alloc ( (numNodes + numLeafs) * sizeof(*out), h_low);
s_worldData.nodes = out;
s_worldData.numnodes = numNodes + numLeafs;
s_worldData.numDecisionNodes = numNodes;
// load nodes
for ( i=0 ; i<numNodes; i++, in++, out++)
{
for (j=0 ; j<3 ; j++)
{
out->mins[j] = LittleLong (in->mins[j]);
out->maxs[j] = LittleLong (in->maxs[j]);
}
p = LittleLong(in->planeNum);
out->plane = s_worldData.planes + p;
out->contents = CONTENTS_NODE; // differentiate from leafs
for (j=0 ; j<2 ; j++)
{
p = LittleLong (in->children[j]);
if (p >= 0)
out->children[j] = s_worldData.nodes + p;
else
out->children[j] = s_worldData.nodes + numNodes + (-1 - p);
}
}
// load leafs
inLeaf = (void *)(fileBase + leafLump->fileofs);
for ( i=0 ; i<numLeafs ; i++, inLeaf++, out++)
{
for (j=0 ; j<3 ; j++)
{
out->mins[j] = LittleLong (inLeaf->mins[j]);
out->maxs[j] = LittleLong (inLeaf->maxs[j]);
}
out->cluster = LittleLong(inLeaf->cluster);
out->area = LittleLong(inLeaf->area);
if ( out->cluster >= s_worldData.numClusters ) {
s_worldData.numClusters = out->cluster + 1;
}
out->firstmarksurface = s_worldData.marksurfaces +
LittleLong(inLeaf->firstLeafSurface);
out->nummarksurfaces = LittleLong(inLeaf->numLeafSurfaces);
}
// chain decendants
R_SetParent (s_worldData.nodes, NULL);
}
//=============================================================================
/*
=================
R_LoadShaders
=================
*/
static void R_LoadShaders( lump_t *l ) {
int i, count;
dshader_t *in, *out;
in = (void *)(fileBase + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
count = l->filelen / sizeof(*in);
out = ri.Hunk_Alloc ( count*sizeof(*out), h_low );
s_worldData.shaders = out;
s_worldData.numShaders = count;
Com_Memcpy( out, in, count*sizeof(*out) );
for ( i=0 ; i<count ; i++ ) {
out[i].surfaceFlags = LittleLong( out[i].surfaceFlags );
out[i].contentFlags = LittleLong( out[i].contentFlags );
}
}
/*
=================
R_LoadMarksurfaces
=================
*/
static void R_LoadMarksurfaces (lump_t *l)
{
int i, j, count;
int *in;
msurface_t **out;
in = (void *)(fileBase + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
count = l->filelen / sizeof(*in);
out = ri.Hunk_Alloc ( count*sizeof(*out), h_low);
s_worldData.marksurfaces = out;
s_worldData.nummarksurfaces = count;
for ( i=0 ; i<count ; i++)
{
j = LittleLong(in[i]);
out[i] = s_worldData.surfaces + j;
}
}
/*
=================
R_LoadPlanes
=================
*/
static void R_LoadPlanes( lump_t *l ) {
int i, j;
cplane_t *out;
dplane_t *in;
int count;
int bits;
in = (void *)(fileBase + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
count = l->filelen / sizeof(*in);
out = ri.Hunk_Alloc ( count*2*sizeof(*out), h_low);
s_worldData.planes = out;
s_worldData.numplanes = count;
for ( i=0 ; i<count ; i++, in++, out++) {
bits = 0;
for (j=0 ; j<3 ; j++) {
out->normal[j] = LittleFloat (in->normal[j]);
if (out->normal[j] < 0) {
bits |= 1<<j;
}
}
out->dist = LittleFloat (in->dist);
out->type = PlaneTypeForNormal( out->normal );
out->signbits = bits;
}
}
/*
=================
R_LoadFogs
=================
*/
static void R_LoadFogs( lump_t *l, lump_t *brushesLump, lump_t *sidesLump ) {
int i;
fog_t *out;
dfog_t *fogs;
dbrush_t *brushes, *brush;
dbrushside_t *sides;
int count, brushesCount, sidesCount;
int sideNum;
int planeNum;
shader_t *shader;
float d;
int firstSide;
fogs = (void *)(fileBase + l->fileofs);
if (l->filelen % sizeof(*fogs)) {
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
}
count = l->filelen / sizeof(*fogs);
// create fog strucutres for them
s_worldData.numfogs = count + 1;
s_worldData.fogs = ri.Hunk_Alloc ( s_worldData.numfogs*sizeof(*out), h_low);
out = s_worldData.fogs + 1;
if ( !count ) {
return;
}
brushes = (void *)(fileBase + brushesLump->fileofs);
if (brushesLump->filelen % sizeof(*brushes)) {
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
}
brushesCount = brushesLump->filelen / sizeof(*brushes);
sides = (void *)(fileBase + sidesLump->fileofs);
if (sidesLump->filelen % sizeof(*sides)) {
ri.Error (ERR_DROP, "LoadMap: funny lump size in %s",s_worldData.name);
}
sidesCount = sidesLump->filelen / sizeof(*sides);
for ( i=0 ; i<count ; i++, fogs++) {
out->originalBrushNumber = LittleLong( fogs->brushNum );
if ( (unsigned)out->originalBrushNumber >= brushesCount ) {
ri.Error( ERR_DROP, "fog brushNumber out of range" );
}
brush = brushes + out->originalBrushNumber;
firstSide = LittleLong( brush->firstSide );
if ( (unsigned)firstSide > sidesCount - 6 ) {
ri.Error( ERR_DROP, "fog brush sideNumber out of range" );
}
// brushes are always sorted with the axial sides first
sideNum = firstSide + 0;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[0][0] = -s_worldData.planes[ planeNum ].dist;
sideNum = firstSide + 1;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[1][0] = s_worldData.planes[ planeNum ].dist;
sideNum = firstSide + 2;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[0][1] = -s_worldData.planes[ planeNum ].dist;
sideNum = firstSide + 3;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[1][1] = s_worldData.planes[ planeNum ].dist;
sideNum = firstSide + 4;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[0][2] = -s_worldData.planes[ planeNum ].dist;
sideNum = firstSide + 5;
planeNum = LittleLong( sides[ sideNum ].planeNum );
out->bounds[1][2] = s_worldData.planes[ planeNum ].dist;
// get information from the shader for fog parameters
shader = R_FindShader( fogs->shader, LIGHTMAP_NONE, qtrue );
out->parms = shader->fogParms;
out->colorInt = ColorBytes4 ( shader->fogParms.color[0] * tr.identityLight,
shader->fogParms.color[1] * tr.identityLight,
shader->fogParms.color[2] * tr.identityLight, 1.0 );
d = shader->fogParms.depthForOpaque < 1 ? 1 : shader->fogParms.depthForOpaque;
out->tcScale = 1.0f / ( d * 8 );
// set the gradient vector
sideNum = LittleLong( fogs->visibleSide );
if ( sideNum == -1 ) {
out->hasSurface = qfalse;
} else {
out->hasSurface = qtrue;
planeNum = LittleLong( sides[ firstSide + sideNum ].planeNum );
VectorSubtract( vec3_origin, s_worldData.planes[ planeNum ].normal, out->surface );
out->surface[3] = -s_worldData.planes[ planeNum ].dist;
}
out++;
}
}
/*
================
R_LoadLightGrid
================
*/
void R_LoadLightGrid( lump_t *l ) {
int i;
vec3_t maxs;
int numGridPoints;
world_t *w;
float *wMins, *wMaxs;
w = &s_worldData;
w->lightGridInverseSize[0] = 1.0f / w->lightGridSize[0];
w->lightGridInverseSize[1] = 1.0f / w->lightGridSize[1];
w->lightGridInverseSize[2] = 1.0f / w->lightGridSize[2];
wMins = w->bmodels[0].bounds[0];
wMaxs = w->bmodels[0].bounds[1];
for ( i = 0 ; i < 3 ; i++ ) {
w->lightGridOrigin[i] = w->lightGridSize[i] * ceil( wMins[i] / w->lightGridSize[i] );
maxs[i] = w->lightGridSize[i] * floor( wMaxs[i] / w->lightGridSize[i] );
w->lightGridBounds[i] = (maxs[i] - w->lightGridOrigin[i])/w->lightGridSize[i] + 1;
}
numGridPoints = w->lightGridBounds[0] * w->lightGridBounds[1] * w->lightGridBounds[2];
if ( l->filelen != numGridPoints * 8 ) {
ri.Printf( PRINT_WARNING, "WARNING: light grid mismatch\n" );
w->lightGridData = NULL;
return;
}
w->lightGridData = ri.Hunk_Alloc( l->filelen, h_low );
Com_Memcpy( w->lightGridData, (void *)(fileBase + l->fileofs), l->filelen );
// deal with overbright bits
for ( i = 0 ; i < numGridPoints ; i++ ) {
R_ColorShiftLightingBytes( &w->lightGridData[i*8], &w->lightGridData[i*8] );
R_ColorShiftLightingBytes( &w->lightGridData[i*8+3], &w->lightGridData[i*8+3] );
}
}
/*
================
R_LoadEntities
================
*/
void R_LoadEntities( lump_t *l ) {
char *p, *token, *s;
char keyname[MAX_TOKEN_CHARS];
char value[MAX_TOKEN_CHARS];
world_t *w;
w = &s_worldData;
w->lightGridSize[0] = 64;
w->lightGridSize[1] = 64;
w->lightGridSize[2] = 128;
p = (char *)(fileBase + l->fileofs);
// store for reference by the cgame
w->entityString = ri.Hunk_Alloc( l->filelen + 1, h_low );
strcpy( w->entityString, p );
w->entityParsePoint = w->entityString;
token = COM_ParseExt( &p, qtrue );
if (!*token || *token != '{') {
return;
}
// only parse the world spawn
while ( 1 ) {
// parse key
token = COM_ParseExt( &p, qtrue );
if ( !*token || *token == '}' ) {
break;
}
Q_strncpyz(keyname, token, sizeof(keyname));
// parse value
token = COM_ParseExt( &p, qtrue );
if ( !*token || *token == '}' ) {
break;
}
Q_strncpyz(value, token, sizeof(value));
// check for remapping of shaders for vertex lighting
s = "vertexremapshader";
if (!Q_strncmp(keyname, s, strlen(s)) ) {
s = strchr(value, ';');
if (!s) {
ri.Printf( PRINT_WARNING, "WARNING: no semi colon in vertexshaderremap '%s'\n", value );
break;
}
*s++ = 0;
if (r_vertexLight->integer) {
R_RemapShader(value, s, "0");
}
continue;
}
// check for remapping of shaders
s = "remapshader";
if (!Q_strncmp(keyname, s, strlen(s)) ) {
s = strchr(value, ';');
if (!s) {
ri.Printf( PRINT_WARNING, "WARNING: no semi colon in shaderremap '%s'\n", value );
break;
}
*s++ = 0;
R_RemapShader(value, s, "0");
continue;
}
// check for a different grid size
if (!Q_stricmp(keyname, "gridsize")) {
sscanf(value, "%f %f %f", &w->lightGridSize[0], &w->lightGridSize[1], &w->lightGridSize[2] );
continue;
}
}
}
/*
=================
R_GetEntityToken
=================
*/
qboolean R_GetEntityToken( char *buffer, int size ) {
const char *s;
s = COM_Parse( &s_worldData.entityParsePoint );
Q_strncpyz( buffer, s, size );
if ( !s_worldData.entityParsePoint || !s[0] ) {
s_worldData.entityParsePoint = s_worldData.entityString;
return qfalse;
} else {
return qtrue;
}
}
/*
=================
RE_LoadWorldMap
Called directly from cgame
=================
*/
void RE_LoadWorldMap( const char *name ) {
int i;
dheader_t *header;
union {
byte *b;
void *v;
} buffer;
byte *startMarker;
if ( tr.worldMapLoaded ) {
ri.Error( ERR_DROP, "ERROR: attempted to redundantly load world map" );
}
// set default sun direction to be used if it isn't
// overridden by a shader
tr.sunDirection[0] = 0.45f;
tr.sunDirection[1] = 0.3f;
tr.sunDirection[2] = 0.9f;
VectorNormalize( tr.sunDirection );
tr.worldMapLoaded = qtrue;
// load it
ri.FS_ReadFile( name, &buffer.v );
if ( !buffer.b ) {
ri.Error (ERR_DROP, "RE_LoadWorldMap: %s not found", name);
}
// clear tr.world so if the level fails to load, the next
// try will not look at the partially loaded version
tr.world = NULL;
Com_Memset( &s_worldData, 0, sizeof( s_worldData ) );
Q_strncpyz( s_worldData.name, name, sizeof( s_worldData.name ) );
Q_strncpyz( s_worldData.baseName, COM_SkipPath( s_worldData.name ), sizeof( s_worldData.name ) );
COM_StripExtension(s_worldData.baseName, s_worldData.baseName, sizeof(s_worldData.baseName));
startMarker = ri.Hunk_Alloc(0, h_low);
c_gridVerts = 0;
header = (dheader_t *)buffer.b;
fileBase = (byte *)header;
i = LittleLong (header->version);
if ( i != BSP_VERSION ) {
ri.Error (ERR_DROP, "RE_LoadWorldMap: %s has wrong version number (%i should be %i)",
name, i, BSP_VERSION);
}
// swap all the lumps
for (i=0 ; i<sizeof(dheader_t)/4 ; i++) {
((int *)header)[i] = LittleLong ( ((int *)header)[i]);
}
// load into heap
R_LoadShaders( &header->lumps[LUMP_SHADERS] );
R_LoadLightmaps( &header->lumps[LUMP_LIGHTMAPS] );
R_LoadPlanes (&header->lumps[LUMP_PLANES]);
R_LoadFogs( &header->lumps[LUMP_FOGS], &header->lumps[LUMP_BRUSHES], &header->lumps[LUMP_BRUSHSIDES] );
R_LoadSurfaces( &header->lumps[LUMP_SURFACES], &header->lumps[LUMP_DRAWVERTS], &header->lumps[LUMP_DRAWINDEXES] );
R_LoadMarksurfaces (&header->lumps[LUMP_LEAFSURFACES]);
R_LoadNodesAndLeafs (&header->lumps[LUMP_NODES], &header->lumps[LUMP_LEAFS]);
R_LoadSubmodels (&header->lumps[LUMP_MODELS]);
R_LoadVisibility( &header->lumps[LUMP_VISIBILITY] );
R_LoadEntities( &header->lumps[LUMP_ENTITIES] );
R_LoadLightGrid( &header->lumps[LUMP_LIGHTGRID] );
s_worldData.dataSize = (byte *)ri.Hunk_Alloc(0, h_low) - startMarker;
// only set tr.world now that we know the entire level has loaded properly
tr.world = &s_worldData;
ri.FS_FreeFile( buffer.v );
}
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