mirror of https://github.com/ioquake/ioq3.git
1159 lines
28 KiB
C
Executable File
1159 lines
28 KiB
C
Executable File
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "qbsp.h"
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mapDrawSurface_t mapDrawSurfs[MAX_MAP_DRAW_SURFS];
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int numMapDrawSurfs;
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/*
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=============================================================================
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DRAWSURF CONSTRUCTION
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=============================================================================
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*/
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/*
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=================
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AllocDrawSurf
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=================
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*/
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mapDrawSurface_t *AllocDrawSurf( void ) {
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mapDrawSurface_t *ds;
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if ( numMapDrawSurfs >= MAX_MAP_DRAW_SURFS ) {
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Error( "MAX_MAP_DRAW_SURFS");
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}
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ds = &mapDrawSurfs[ numMapDrawSurfs ];
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numMapDrawSurfs++;
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return ds;
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}
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/*
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=================
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DrawSurfaceForSide
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=================
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*/
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#define SNAP_FLOAT_TO_INT 8
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#define SNAP_INT_TO_FLOAT (1.0/SNAP_FLOAT_TO_INT)
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mapDrawSurface_t *DrawSurfaceForSide( bspbrush_t *b, side_t *s, winding_t *w ) {
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mapDrawSurface_t *ds;
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int i, j;
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shaderInfo_t *si;
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drawVert_t *dv;
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float mins[2], maxs[2];
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// brush primitive :
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// axis base
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vec3_t texX,texY;
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vec_t x,y;
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if ( w->numpoints > 64 ) {
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Error( "DrawSurfaceForSide: w->numpoints = %i", w->numpoints );
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}
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si = s->shaderInfo;
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ds = AllocDrawSurf();
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ds->shaderInfo = si;
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ds->mapBrush = b;
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ds->side = s;
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ds->fogNum = -1;
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ds->numVerts = w->numpoints;
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ds->verts = malloc( ds->numVerts * sizeof( *ds->verts ) );
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memset( ds->verts, 0, ds->numVerts * sizeof( *ds->verts ) );
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mins[0] = mins[1] = 99999;
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maxs[0] = maxs[1] = -99999;
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// compute s/t coordinates from brush primitive texture matrix
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// compute axis base
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ComputeAxisBase( mapplanes[s->planenum].normal, texX, texY );
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for ( j = 0 ; j < w->numpoints ; j++ ) {
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dv = ds->verts + j;
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// round the xyz to a given precision
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for ( i = 0 ; i < 3 ; i++ ) {
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dv->xyz[i] = SNAP_INT_TO_FLOAT * floor( w->p[j][i] * SNAP_FLOAT_TO_INT + 0.5 );
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}
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if (g_bBrushPrimit==BPRIMIT_OLDBRUSHES)
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{
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// calculate texture s/t
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dv->st[0] = s->vecs[0][3] + DotProduct( s->vecs[0], dv->xyz );
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dv->st[1] = s->vecs[1][3] + DotProduct( s->vecs[1], dv->xyz );
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dv->st[0] /= si->width;
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dv->st[1] /= si->height;
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}
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else
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{
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// calculate texture s/t from brush primitive texture matrix
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x = DotProduct( dv->xyz, texX );
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y = DotProduct( dv->xyz, texY );
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dv->st[0]=s->texMat[0][0]*x+s->texMat[0][1]*y+s->texMat[0][2];
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dv->st[1]=s->texMat[1][0]*x+s->texMat[1][1]*y+s->texMat[1][2];
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}
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for ( i = 0 ; i < 2 ; i++ ) {
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if ( dv->st[i] < mins[i] ) {
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mins[i] = dv->st[i];
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}
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if ( dv->st[i] > maxs[i] ) {
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maxs[i] = dv->st[i];
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}
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}
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// copy normal
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VectorCopy ( mapplanes[s->planenum].normal, dv->normal );
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}
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// adjust the texture coordinates to be as close to 0 as possible
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if ( !si->globalTexture ) {
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mins[0] = floor( mins[0] );
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mins[1] = floor( mins[1] );
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for ( i = 0 ; i < w->numpoints ; i++ ) {
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dv = ds->verts + i;
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dv->st[0] -= mins[0];
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dv->st[1] -= mins[1];
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}
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}
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return ds;
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}
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//=========================================================================
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typedef struct {
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int planenum;
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shaderInfo_t *shaderInfo;
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int count;
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} sideRef_t;
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#define MAX_SIDE_REFS MAX_MAP_PLANES
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sideRef_t sideRefs[MAX_SIDE_REFS];
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int numSideRefs;
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void AddSideRef( side_t *side ) {
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int i;
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for ( i = 0 ; i < numSideRefs ; i++ ) {
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if ( side->planenum == sideRefs[i].planenum
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&& side->shaderInfo == sideRefs[i].shaderInfo ) {
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sideRefs[i].count++;
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return;
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}
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}
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if ( numSideRefs == MAX_SIDE_REFS ) {
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Error( "MAX_SIDE_REFS" );
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}
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sideRefs[i].planenum = side->planenum;
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sideRefs[i].shaderInfo = side->shaderInfo;
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sideRefs[i].count++;
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numSideRefs++;
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}
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/*
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=====================
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MergeSides
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=====================
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*/
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void MergeSides( entity_t *e, tree_t *tree ) {
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int i;
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qprintf( "----- MergeSides -----\n");
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for ( i = e->firstDrawSurf ; i < numMapDrawSurfs ; i++ ) {
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// AddSideRef( side );
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}
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qprintf( "%5i siderefs\n", numSideRefs );
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}
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//=====================================================================
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/*
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===================
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SubdivideDrawSurf
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===================
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*/
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void SubdivideDrawSurf( mapDrawSurface_t *ds, winding_t *w, float subdivisions ) {
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int i;
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int axis;
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vec3_t bounds[2];
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const float epsilon = 0.1;
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int subFloor, subCeil;
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winding_t *frontWinding, *backWinding;
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mapDrawSurface_t *newds;
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if ( !w ) {
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return;
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}
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if ( w->numpoints < 3 ) {
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Error( "SubdivideDrawSurf: Bad w->numpoints" );
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}
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ClearBounds( bounds[0], bounds[1] );
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for ( i = 0 ; i < w->numpoints ; i++ ) {
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AddPointToBounds( w->p[i], bounds[0], bounds[1] );
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}
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for ( axis = 0 ; axis < 3 ; axis++ ) {
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vec3_t planePoint = { 0, 0, 0 };
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vec3_t planeNormal = { 0, 0, 0 };
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float d;
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subFloor = floor( bounds[0][axis] / subdivisions ) * subdivisions;
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subCeil = ceil( bounds[1][axis] / subdivisions ) * subdivisions;
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planePoint[axis] = subFloor + subdivisions;
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planeNormal[axis] = -1;
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d = DotProduct( planePoint, planeNormal );
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// subdivide if necessary
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if ( subCeil - subFloor > subdivisions ) {
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// gotta clip polygon into two polygons
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ClipWindingEpsilon( w, planeNormal, d, epsilon, &frontWinding, &backWinding );
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// the clip may not produce two polygons if it was epsilon close
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if ( !frontWinding ) {
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w = backWinding;
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} else if ( !backWinding ) {
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w = frontWinding;
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} else {
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SubdivideDrawSurf( ds, frontWinding, subdivisions );
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SubdivideDrawSurf( ds, backWinding, subdivisions );
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return;
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}
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}
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}
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// emit this polygon
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newds = DrawSurfaceForSide( ds->mapBrush, ds->side, w );
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newds->fogNum = ds->fogNum;
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}
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/*
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=====================
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SubdivideDrawSurfs
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Chop up surfaces that have subdivision attributes
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=====================
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*/
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void SubdivideDrawSurfs( entity_t *e, tree_t *tree ) {
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int i;
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mapDrawSurface_t *ds;
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int numBaseDrawSurfs;
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winding_t *w;
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float subdivision;
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shaderInfo_t *si;
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qprintf( "----- SubdivideDrawSurfs -----\n");
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numBaseDrawSurfs = numMapDrawSurfs;
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for ( i = e->firstDrawSurf ; i < numBaseDrawSurfs ; i++ ) {
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ds = &mapDrawSurfs[i];
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// only subdivide brush sides, not patches or misc_models
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if ( !ds->side ) {
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continue;
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}
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// check subdivision for shader
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si = ds->side->shaderInfo;
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if ( !si ) {
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continue;
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}
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if (ds->shaderInfo->autosprite || si->autosprite) {
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continue;
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}
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subdivision = si->subdivisions;
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if ( !subdivision ) {
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continue;
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}
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w = WindingFromDrawSurf( ds );
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ds->numVerts = 0; // remove this reference
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SubdivideDrawSurf( ds, w, subdivision );
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}
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}
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//===================================================================================
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/*
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====================
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ClipSideIntoTree_r
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Adds non-opaque leaf fragments to the convex hull
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====================
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*/
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void ClipSideIntoTree_r( winding_t *w, side_t *side, node_t *node ) {
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plane_t *plane;
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winding_t *front, *back;
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if ( !w ) {
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return;
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}
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if ( node->planenum != PLANENUM_LEAF ) {
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if ( side->planenum == node->planenum ) {
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ClipSideIntoTree_r( w, side, node->children[0] );
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return;
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}
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if ( side->planenum == ( node->planenum ^ 1) ) {
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ClipSideIntoTree_r( w, side, node->children[1] );
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return;
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}
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plane = &mapplanes[ node->planenum ];
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ClipWindingEpsilon ( w, plane->normal, plane->dist,
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ON_EPSILON, &front, &back );
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FreeWinding( w );
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ClipSideIntoTree_r( front, side, node->children[0] );
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ClipSideIntoTree_r( back, side, node->children[1] );
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return;
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}
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// if opaque leaf, don't add
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if ( !node->opaque ) {
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AddWindingToConvexHull( w, &side->visibleHull, mapplanes[ side->planenum ].normal );
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}
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FreeWinding( w );
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return;
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}
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/*
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=====================
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ClipSidesIntoTree
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Creates side->visibleHull for all visible sides
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The drawsurf for a side will consist of the convex hull of
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all points in non-opaque clusters, which allows overlaps
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to be trimmed off automatically.
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=====================
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*/
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void ClipSidesIntoTree( entity_t *e, tree_t *tree ) {
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bspbrush_t *b;
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int i;
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winding_t *w;
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side_t *side, *newSide;
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shaderInfo_t *si;
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qprintf( "----- ClipSidesIntoTree -----\n");
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for ( b = e->brushes ; b ; b = b->next ) {
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for ( i = 0 ; i < b->numsides ; i++ ) {
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side = &b->sides[i];
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if ( !side->winding) {
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continue;
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}
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w = CopyWinding( side->winding );
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side->visibleHull = NULL;
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ClipSideIntoTree_r( w, side, tree->headnode );
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w = side->visibleHull;
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if ( !w ) {
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continue;
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}
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si = side->shaderInfo;
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if ( !si ) {
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continue;
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}
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// don't create faces for non-visible sides
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if ( si->surfaceFlags & SURF_NODRAW ) {
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continue;
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}
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// always use the original quad winding for auto sprites
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if ( side->shaderInfo->autosprite ) {
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w = side->winding;
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}
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//
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if ( side->bevel ) {
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Error( "monkey tried to create draw surface for brush bevel" );
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}
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// save this winding as a visible surface
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DrawSurfaceForSide( b, side, w );
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// make a back side for it if needed
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if ( !(si->contents & CONTENTS_FOG) ) {
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continue;
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}
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// duplicate the up-facing side
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w = ReverseWinding( w );
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newSide = malloc( sizeof( *side ) );
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*newSide = *side;
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newSide->visibleHull = w;
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newSide->planenum ^= 1;
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// save this winding as a visible surface
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DrawSurfaceForSide( b, newSide, w );
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}
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}
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}
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/*
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===================================================================================
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FILTER REFERENCES DOWN THE TREE
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===================================================================================
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*/
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/*
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====================
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FilterDrawSurfIntoTree
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Place a reference to the given drawsurf in every leaf it contacts
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We assume that the point mesh aproximation to the curve will get a
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reference into all the leafs we need.
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====================
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*/
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int FilterMapDrawSurfIntoTree( vec3_t point, mapDrawSurface_t *ds, node_t *node ) {
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drawSurfRef_t *dsr;
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float d;
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plane_t *plane;
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int c;
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if ( node->planenum != PLANENUM_LEAF ) {
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plane = &mapplanes[ node->planenum ];
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d = DotProduct( point, plane->normal ) - plane->dist;
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c = 0;
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if ( d >= -ON_EPSILON ) {
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c += FilterMapDrawSurfIntoTree( point, ds, node->children[0] );
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}
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if ( d <= ON_EPSILON ) {
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c += FilterMapDrawSurfIntoTree( point, ds, node->children[1] );
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}
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return c;
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}
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// if opaque leaf, don't add
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if ( node->opaque ) {
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return 0;
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}
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// add the drawsurf if it hasn't been already
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for ( dsr = node->drawSurfReferences ; dsr ; dsr = dsr->nextRef ) {
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if ( dsr->outputNumber == numDrawSurfaces ) {
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return 0; // already referenced
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}
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}
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dsr = malloc( sizeof( *dsr ) );
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dsr->outputNumber = numDrawSurfaces;
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dsr->nextRef = node->drawSurfReferences;
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node->drawSurfReferences = dsr;
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return 1;
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}
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/*
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====================
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FilterDrawSurfIntoTree_r
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Place a reference to the given drawsurf in every leaf it is in
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====================
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*/
|
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int FilterMapDrawSurfIntoTree_r( winding_t *w, mapDrawSurface_t *ds, node_t *node ) {
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drawSurfRef_t *dsr;
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plane_t *plane;
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int total;
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winding_t *front, *back;
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if ( node->planenum != PLANENUM_LEAF ) {
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plane = &mapplanes[ node->planenum ];
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ClipWindingEpsilon ( w, plane->normal, plane->dist,
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ON_EPSILON, &front, &back );
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total = 0;
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if ( front ) {
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total += FilterMapDrawSurfIntoTree_r( front, ds, node->children[0] );
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}
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if ( back ) {
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total += FilterMapDrawSurfIntoTree_r( back, ds, node->children[1] );
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}
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FreeWinding( w );
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return total;
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}
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// if opaque leaf, don't add
|
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if ( node->opaque ) {
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return 0;
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}
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// add the drawsurf if it hasn't been already
|
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for ( dsr = node->drawSurfReferences ; dsr ; dsr = dsr->nextRef ) {
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if ( dsr->outputNumber == numDrawSurfaces ) {
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return 0; // already referenced
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}
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}
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dsr = malloc( sizeof( *dsr ) );
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dsr->outputNumber = numDrawSurfaces;
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dsr->nextRef = node->drawSurfReferences;
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node->drawSurfReferences = dsr;
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return 1;
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}
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|
|
/*
|
|
====================
|
|
FilterSideIntoTree_r
|
|
|
|
Place a reference to the given drawsurf in every leaf it contacts
|
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====================
|
|
*/
|
|
int FilterSideIntoTree_r( winding_t *w, side_t *side, mapDrawSurface_t *ds, node_t *node ) {
|
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drawSurfRef_t *dsr;
|
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plane_t *plane;
|
|
winding_t *front, *back;
|
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int total;
|
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|
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if ( !w ) {
|
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return 0;
|
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}
|
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|
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if ( node->planenum != PLANENUM_LEAF ) {
|
|
if ( side->planenum == node->planenum ) {
|
|
return FilterSideIntoTree_r( w, side, ds, node->children[0] );
|
|
}
|
|
if ( side->planenum == ( node->planenum ^ 1) ) {
|
|
return FilterSideIntoTree_r( w, side, ds, node->children[1] );
|
|
}
|
|
|
|
plane = &mapplanes[ node->planenum ];
|
|
ClipWindingEpsilon ( w, plane->normal, plane->dist,
|
|
ON_EPSILON, &front, &back );
|
|
|
|
total = FilterSideIntoTree_r( front, side, ds, node->children[0] );
|
|
total += FilterSideIntoTree_r( back, side, ds, node->children[1] );
|
|
|
|
FreeWinding( w );
|
|
return total;
|
|
}
|
|
|
|
// if opaque leaf, don't add
|
|
if ( node->opaque ) {
|
|
return 0;
|
|
}
|
|
|
|
dsr = malloc( sizeof( *dsr ) );
|
|
dsr->outputNumber = numDrawSurfaces;
|
|
dsr->nextRef = node->drawSurfReferences;
|
|
node->drawSurfReferences = dsr;
|
|
|
|
FreeWinding( w );
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
=====================
|
|
FilterFaceIntoTree
|
|
=====================
|
|
*/
|
|
int FilterFaceIntoTree( mapDrawSurface_t *ds, tree_t *tree ) {
|
|
int l;
|
|
winding_t *w;
|
|
|
|
w = WindingFromDrawSurf( ds );
|
|
l = FilterSideIntoTree_r( w, ds->side, ds, tree->headnode );
|
|
|
|
return l;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
=====================
|
|
FilterPatchSurfIntoTree
|
|
=====================
|
|
*/
|
|
#define SUBDIVISION_LIMIT 8.0
|
|
int FilterPatchSurfIntoTree( mapDrawSurface_t *ds, tree_t *tree ) {
|
|
int i, j;
|
|
int l;
|
|
mesh_t baseMesh, *subdividedMesh;
|
|
winding_t *w;
|
|
|
|
baseMesh.width = ds->patchWidth;
|
|
baseMesh.height = ds->patchHeight;
|
|
baseMesh.verts = ds->verts;
|
|
subdividedMesh = SubdivideMesh( baseMesh, SUBDIVISION_LIMIT, 32 );
|
|
|
|
l = 0;
|
|
for (i = 0; i < subdividedMesh->width-1; i++) {
|
|
for (j = 0; j < subdividedMesh->height-1; j++) {
|
|
w = AllocWinding(3);
|
|
VectorCopy(subdividedMesh->verts[j * subdividedMesh->width + i].xyz, w->p[0]);
|
|
VectorCopy(subdividedMesh->verts[j * subdividedMesh->width + i + 1].xyz, w->p[1]);
|
|
VectorCopy(subdividedMesh->verts[(j+1) * subdividedMesh->width + i].xyz, w->p[2]);
|
|
w->numpoints = 3;
|
|
l += FilterMapDrawSurfIntoTree_r( w, ds, tree->headnode );
|
|
w = AllocWinding(3);
|
|
VectorCopy(subdividedMesh->verts[j * subdividedMesh->width + i + 1].xyz, w->p[0]);
|
|
VectorCopy(subdividedMesh->verts[(j+1) * subdividedMesh->width + i + 1].xyz, w->p[1]);
|
|
VectorCopy(subdividedMesh->verts[(j+1) * subdividedMesh->width + i].xyz, w->p[2]);
|
|
w->numpoints = 3;
|
|
l += FilterMapDrawSurfIntoTree_r( w, ds, tree->headnode );
|
|
}
|
|
}
|
|
|
|
// also use the old point filtering into the tree
|
|
for ( i = 0 ; i < subdividedMesh->width * subdividedMesh->height ; i++ ) {
|
|
l += FilterMapDrawSurfIntoTree( subdividedMesh->verts[i].xyz, ds, tree->headnode );
|
|
}
|
|
|
|
free(subdividedMesh);
|
|
|
|
return l;
|
|
}
|
|
|
|
|
|
/*
|
|
=====================
|
|
FilterMiscModelSurfIntoTree
|
|
=====================
|
|
*/
|
|
int FilterMiscModelSurfIntoTree( mapDrawSurface_t *ds, tree_t *tree ) {
|
|
int i;
|
|
int l;
|
|
winding_t *w;
|
|
|
|
l = 0;
|
|
for (i = 0; i < ds->numIndexes-2; i++) {
|
|
w = AllocWinding(3);
|
|
VectorCopy(ds->verts[ds->indexes[i]].xyz, w->p[0]);
|
|
VectorCopy(ds->verts[ds->indexes[i+1]].xyz, w->p[1]);
|
|
VectorCopy(ds->verts[ds->indexes[i+2]].xyz, w->p[2]);
|
|
w->numpoints = 3;
|
|
l += FilterMapDrawSurfIntoTree_r( w, ds, tree->headnode );
|
|
}
|
|
|
|
// also use the old point filtering into the tree
|
|
for ( i = 0 ; i < ds->numVerts ; i++ ) {
|
|
l += FilterMapDrawSurfIntoTree( ds->verts[i].xyz, ds, tree->headnode );
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
/*
|
|
=====================
|
|
FilterFlareSurfIntoTree
|
|
=====================
|
|
*/
|
|
int FilterFlareSurfIntoTree( mapDrawSurface_t *ds, tree_t *tree ) {
|
|
return FilterMapDrawSurfIntoTree( ds->lightmapOrigin, ds, tree->headnode );
|
|
}
|
|
|
|
|
|
//======================================================================
|
|
|
|
int c_stripSurfaces, c_fanSurfaces;
|
|
|
|
/*
|
|
==================
|
|
IsTriangleDegenerate
|
|
|
|
Returns qtrue if all three points are collinear or backwards
|
|
===================
|
|
*/
|
|
#define COLINEAR_AREA 10
|
|
static qboolean IsTriangleDegenerate( drawVert_t *points, int a, int b, int c ) {
|
|
vec3_t v1, v2, v3;
|
|
float d;
|
|
|
|
VectorSubtract( points[b].xyz, points[a].xyz, v1 );
|
|
VectorSubtract( points[c].xyz, points[a].xyz, v2 );
|
|
CrossProduct( v1, v2, v3 );
|
|
d = VectorLength( v3 );
|
|
|
|
// assume all very small or backwards triangles will cause problems
|
|
if ( d < COLINEAR_AREA ) {
|
|
return qtrue;
|
|
}
|
|
|
|
return qfalse;
|
|
}
|
|
|
|
/*
|
|
===============
|
|
SurfaceAsTriFan
|
|
|
|
The surface can't be represented as a single tristrip without
|
|
leaving a degenerate triangle (and therefore a crack), so add
|
|
a point in the middle and create (points-1) triangles in fan order
|
|
===============
|
|
*/
|
|
static void SurfaceAsTriFan( dsurface_t *ds ) {
|
|
int i;
|
|
int colorSum[4];
|
|
drawVert_t *mid, *v;
|
|
|
|
// create a new point in the center of the face
|
|
if ( numDrawVerts == MAX_MAP_DRAW_VERTS ) {
|
|
Error( "MAX_MAP_DRAW_VERTS" );
|
|
}
|
|
mid = &drawVerts[ numDrawVerts ];
|
|
numDrawVerts++;
|
|
|
|
colorSum[0] = colorSum[1] = colorSum[2] = colorSum[3] = 0;
|
|
|
|
v = drawVerts + ds->firstVert;
|
|
for (i = 0 ; i < ds->numVerts ; i++, v++ ) {
|
|
VectorAdd( mid->xyz, v->xyz, mid->xyz );
|
|
mid->st[0] += v->st[0];
|
|
mid->st[1] += v->st[1];
|
|
mid->lightmap[0] += v->lightmap[0];
|
|
mid->lightmap[1] += v->lightmap[1];
|
|
|
|
colorSum[0] += v->color[0];
|
|
colorSum[1] += v->color[1];
|
|
colorSum[2] += v->color[2];
|
|
colorSum[3] += v->color[3];
|
|
}
|
|
|
|
mid->xyz[0] /= ds->numVerts;
|
|
mid->xyz[1] /= ds->numVerts;
|
|
mid->xyz[2] /= ds->numVerts;
|
|
|
|
mid->st[0] /= ds->numVerts;
|
|
mid->st[1] /= ds->numVerts;
|
|
|
|
mid->lightmap[0] /= ds->numVerts;
|
|
mid->lightmap[1] /= ds->numVerts;
|
|
|
|
mid->color[0] = colorSum[0] / ds->numVerts;
|
|
mid->color[1] = colorSum[1] / ds->numVerts;
|
|
mid->color[2] = colorSum[2] / ds->numVerts;
|
|
mid->color[3] = colorSum[3] / ds->numVerts;
|
|
|
|
VectorCopy((drawVerts+ds->firstVert)->normal, mid->normal );
|
|
|
|
// fill in indices in trifan order
|
|
if ( numDrawIndexes + ds->numVerts*3 > MAX_MAP_DRAW_INDEXES ) {
|
|
Error( "MAX_MAP_DRAWINDEXES" );
|
|
}
|
|
ds->firstIndex = numDrawIndexes;
|
|
ds->numIndexes = ds->numVerts*3;
|
|
|
|
//FIXME
|
|
// should be: for ( i = 0 ; i < ds->numVerts ; i++ ) {
|
|
// set a break point and test this in a map
|
|
//for ( i = 0 ; i < ds->numVerts*3 ; i++ ) {
|
|
for ( i = 0 ; i < ds->numVerts ; i++ ) {
|
|
drawIndexes[numDrawIndexes++] = ds->numVerts;
|
|
drawIndexes[numDrawIndexes++] = i;
|
|
drawIndexes[numDrawIndexes++] = (i+1) % ds->numVerts;
|
|
}
|
|
|
|
ds->numVerts++;
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
SurfaceAsTristrip
|
|
|
|
Try to create indices that make (points-2) triangles in tristrip order
|
|
================
|
|
*/
|
|
#define MAX_INDICES 1024
|
|
static void SurfaceAsTristrip( dsurface_t *ds ) {
|
|
int i;
|
|
int rotate;
|
|
int numIndices;
|
|
int ni;
|
|
int a, b, c;
|
|
int indices[MAX_INDICES];
|
|
|
|
// determine the triangle strip order
|
|
numIndices = ( ds->numVerts - 2 ) * 3;
|
|
if ( numIndices > MAX_INDICES ) {
|
|
Error( "MAX_INDICES exceeded for surface" );
|
|
}
|
|
|
|
// try all possible orderings of the points looking
|
|
// for a strip order that isn't degenerate
|
|
for ( rotate = 0 ; rotate < ds->numVerts ; rotate++ ) {
|
|
for ( ni = 0, i = 0 ; i < ds->numVerts - 2 - i ; i++ ) {
|
|
a = ( ds->numVerts - 1 - i + rotate ) % ds->numVerts;
|
|
b = ( i + rotate ) % ds->numVerts;
|
|
c = ( ds->numVerts - 2 - i + rotate ) % ds->numVerts;
|
|
|
|
if ( IsTriangleDegenerate( drawVerts + ds->firstVert, a, b, c ) ) {
|
|
break;
|
|
}
|
|
indices[ni++] = a;
|
|
indices[ni++] = b;
|
|
indices[ni++] = c;
|
|
|
|
if ( i + 1 != ds->numVerts - 1 - i ) {
|
|
a = ( ds->numVerts - 2 - i + rotate ) % ds->numVerts;
|
|
b = ( i + rotate ) % ds->numVerts;
|
|
c = ( i + 1 + rotate ) % ds->numVerts;
|
|
|
|
if ( IsTriangleDegenerate( drawVerts + ds->firstVert, a, b, c ) ) {
|
|
break;
|
|
}
|
|
indices[ni++] = a;
|
|
indices[ni++] = b;
|
|
indices[ni++] = c;
|
|
}
|
|
}
|
|
if ( ni == numIndices ) {
|
|
break; // got it done without degenerate triangles
|
|
}
|
|
}
|
|
|
|
// if any triangle in the strip is degenerate,
|
|
// render from a centered fan point instead
|
|
if ( ni < numIndices ) {
|
|
c_fanSurfaces++;
|
|
SurfaceAsTriFan( ds );
|
|
return;
|
|
}
|
|
|
|
// a normal tristrip
|
|
c_stripSurfaces++;
|
|
|
|
if ( numDrawIndexes + ni > MAX_MAP_DRAW_INDEXES ) {
|
|
Error( "MAX_MAP_DRAW_INDEXES" );
|
|
}
|
|
ds->firstIndex = numDrawIndexes;
|
|
ds->numIndexes = ni;
|
|
|
|
memcpy( drawIndexes + numDrawIndexes, indices, ni * sizeof(int) );
|
|
numDrawIndexes += ni;
|
|
}
|
|
|
|
/*
|
|
===============
|
|
EmitPlanarSurf
|
|
===============
|
|
*/
|
|
void EmitPlanarSurf( mapDrawSurface_t *ds ) {
|
|
int j;
|
|
dsurface_t *out;
|
|
drawVert_t *outv;
|
|
|
|
if ( numDrawSurfaces == MAX_MAP_DRAW_SURFS ) {
|
|
Error( "MAX_MAP_DRAW_SURFS" );
|
|
}
|
|
out = &drawSurfaces[ numDrawSurfaces ];
|
|
numDrawSurfaces++;
|
|
|
|
out->surfaceType = MST_PLANAR;
|
|
out->shaderNum = EmitShader( ds->shaderInfo->shader );
|
|
out->firstVert = numDrawVerts;
|
|
out->numVerts = ds->numVerts;
|
|
out->fogNum = ds->fogNum;
|
|
out->lightmapNum = ds->lightmapNum;
|
|
out->lightmapX = ds->lightmapX;
|
|
out->lightmapY = ds->lightmapY;
|
|
out->lightmapWidth = ds->lightmapWidth;
|
|
out->lightmapHeight = ds->lightmapHeight;
|
|
|
|
VectorCopy( ds->lightmapOrigin, out->lightmapOrigin );
|
|
VectorCopy( ds->lightmapVecs[0], out->lightmapVecs[0] );
|
|
VectorCopy( ds->lightmapVecs[1], out->lightmapVecs[1] );
|
|
VectorCopy( ds->lightmapVecs[2], out->lightmapVecs[2] );
|
|
|
|
for ( j = 0 ; j < ds->numVerts ; j++ ) {
|
|
if ( numDrawVerts == MAX_MAP_DRAW_VERTS ) {
|
|
Error( "MAX_MAP_DRAW_VERTS" );
|
|
}
|
|
outv = &drawVerts[ numDrawVerts ];
|
|
numDrawVerts++;
|
|
memcpy( outv, &ds->verts[ j ], sizeof( *outv ) );
|
|
outv->color[0] = 255;
|
|
outv->color[1] = 255;
|
|
outv->color[2] = 255;
|
|
outv->color[3] = 255;
|
|
}
|
|
|
|
// create the indexes
|
|
SurfaceAsTristrip( out );
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
EmitPatchSurf
|
|
===============
|
|
*/
|
|
void EmitPatchSurf( mapDrawSurface_t *ds ) {
|
|
int j;
|
|
dsurface_t *out;
|
|
drawVert_t *outv;
|
|
|
|
if ( numDrawSurfaces == MAX_MAP_DRAW_SURFS ) {
|
|
Error( "MAX_MAP_DRAW_SURFS" );
|
|
}
|
|
out = &drawSurfaces[ numDrawSurfaces ];
|
|
numDrawSurfaces++;
|
|
|
|
out->surfaceType = MST_PATCH;
|
|
out->shaderNum = EmitShader( ds->shaderInfo->shader );
|
|
out->firstVert = numDrawVerts;
|
|
out->numVerts = ds->numVerts;
|
|
out->firstIndex = numDrawIndexes;
|
|
out->numIndexes = ds->numIndexes;
|
|
out->patchWidth = ds->patchWidth;
|
|
out->patchHeight = ds->patchHeight;
|
|
out->fogNum = ds->fogNum;
|
|
out->lightmapNum = ds->lightmapNum;
|
|
out->lightmapX = ds->lightmapX;
|
|
out->lightmapY = ds->lightmapY;
|
|
out->lightmapWidth = ds->lightmapWidth;
|
|
out->lightmapHeight = ds->lightmapHeight;
|
|
|
|
VectorCopy( ds->lightmapOrigin, out->lightmapOrigin );
|
|
VectorCopy( ds->lightmapVecs[0], out->lightmapVecs[0] );
|
|
VectorCopy( ds->lightmapVecs[1], out->lightmapVecs[1] );
|
|
VectorCopy( ds->lightmapVecs[2], out->lightmapVecs[2] );
|
|
|
|
for ( j = 0 ; j < ds->numVerts ; j++ ) {
|
|
if ( numDrawVerts == MAX_MAP_DRAW_VERTS ) {
|
|
Error( "MAX_MAP_DRAW_VERTS" );
|
|
}
|
|
outv = &drawVerts[ numDrawVerts ];
|
|
numDrawVerts++;
|
|
memcpy( outv, &ds->verts[ j ], sizeof( *outv ) );
|
|
outv->color[0] = 255;
|
|
outv->color[1] = 255;
|
|
outv->color[2] = 255;
|
|
outv->color[3] = 255;
|
|
}
|
|
|
|
for ( j = 0 ; j < ds->numIndexes ; j++ ) {
|
|
if ( numDrawIndexes == MAX_MAP_DRAW_INDEXES ) {
|
|
Error( "MAX_MAP_DRAW_INDEXES" );
|
|
}
|
|
drawIndexes[ numDrawIndexes ] = ds->indexes[ j ];
|
|
numDrawIndexes++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
EmitFlareSurf
|
|
===============
|
|
*/
|
|
void EmitFlareSurf( mapDrawSurface_t *ds ) {
|
|
dsurface_t *out;
|
|
|
|
if ( numDrawSurfaces == MAX_MAP_DRAW_SURFS ) {
|
|
Error( "MAX_MAP_DRAW_SURFS" );
|
|
}
|
|
out = &drawSurfaces[ numDrawSurfaces ];
|
|
numDrawSurfaces++;
|
|
|
|
out->surfaceType = MST_FLARE;
|
|
out->shaderNum = EmitShader( ds->shaderInfo->shader );
|
|
out->fogNum = ds->fogNum;
|
|
|
|
VectorCopy( ds->lightmapOrigin, out->lightmapOrigin );
|
|
VectorCopy( ds->lightmapVecs[0], out->lightmapVecs[0] ); // color
|
|
VectorCopy( ds->lightmapVecs[2], out->lightmapVecs[2] );
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
EmitModelSurf
|
|
===============
|
|
*/
|
|
void EmitModelSurf( mapDrawSurface_t *ds ) {
|
|
int j;
|
|
dsurface_t *out;
|
|
drawVert_t *outv;
|
|
|
|
if ( numDrawSurfaces == MAX_MAP_DRAW_SURFS ) {
|
|
Error( "MAX_MAP_DRAW_SURFS" );
|
|
}
|
|
out = &drawSurfaces[ numDrawSurfaces ];
|
|
numDrawSurfaces++;
|
|
|
|
out->surfaceType = MST_TRIANGLE_SOUP;
|
|
out->shaderNum = EmitShader( ds->shaderInfo->shader );
|
|
out->firstVert = numDrawVerts;
|
|
out->numVerts = ds->numVerts;
|
|
out->firstIndex = numDrawIndexes;
|
|
out->numIndexes = ds->numIndexes;
|
|
out->patchWidth = ds->patchWidth;
|
|
out->patchHeight = ds->patchHeight;
|
|
out->fogNum = ds->fogNum;
|
|
out->lightmapNum = ds->lightmapNum;
|
|
out->lightmapX = ds->lightmapX;
|
|
out->lightmapY = ds->lightmapY;
|
|
out->lightmapWidth = ds->lightmapWidth;
|
|
out->lightmapHeight = ds->lightmapHeight;
|
|
|
|
VectorCopy( ds->lightmapOrigin, out->lightmapOrigin );
|
|
VectorCopy( ds->lightmapVecs[0], out->lightmapVecs[0] );
|
|
VectorCopy( ds->lightmapVecs[1], out->lightmapVecs[1] );
|
|
VectorCopy( ds->lightmapVecs[2], out->lightmapVecs[2] );
|
|
|
|
for ( j = 0 ; j < ds->numVerts ; j++ ) {
|
|
if ( numDrawVerts == MAX_MAP_DRAW_VERTS ) {
|
|
Error( "MAX_MAP_DRAW_VERTS" );
|
|
}
|
|
outv = &drawVerts[ numDrawVerts ];
|
|
numDrawVerts++;
|
|
memcpy( outv, &ds->verts[ j ], sizeof( *outv ) );
|
|
outv->color[0] = 255;
|
|
outv->color[1] = 255;
|
|
outv->color[2] = 255;
|
|
}
|
|
|
|
for ( j = 0 ; j < ds->numIndexes ; j++ ) {
|
|
if ( numDrawIndexes == MAX_MAP_DRAW_INDEXES ) {
|
|
Error( "MAX_MAP_DRAW_INDEXES" );
|
|
}
|
|
drawIndexes[ numDrawIndexes ] = ds->indexes[ j ];
|
|
numDrawIndexes++;
|
|
}
|
|
}
|
|
|
|
//======================================================================
|
|
|
|
/*
|
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==================
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CreateFlareSurface
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Light flares from surface lights become
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==================
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*/
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void CreateFlareSurface( mapDrawSurface_t *faceDs ) {
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mapDrawSurface_t *ds;
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int i;
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ds = AllocDrawSurf();
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if ( faceDs->shaderInfo->flareShader[0] ) {
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ds->shaderInfo = ShaderInfoForShader( faceDs->shaderInfo->flareShader );
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} else {
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ds->shaderInfo = ShaderInfoForShader( "flareshader" );
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}
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ds->flareSurface = qtrue;
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VectorCopy( faceDs->lightmapVecs[2], ds->lightmapVecs[2] );
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// find midpoint
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VectorClear( ds->lightmapOrigin );
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for ( i = 0 ; i < faceDs->numVerts ; i++ ) {
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VectorAdd( ds->lightmapOrigin, faceDs->verts[i].xyz, ds->lightmapOrigin );
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}
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VectorScale( ds->lightmapOrigin, 1.0/faceDs->numVerts, ds->lightmapOrigin );
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VectorMA( ds->lightmapOrigin, 2, ds->lightmapVecs[2], ds->lightmapOrigin );
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VectorCopy( faceDs->shaderInfo->color, ds->lightmapVecs[0] );
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// FIXME: fog
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}
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/*
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=====================
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FilterDrawsurfsIntoTree
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Upon completion, all drawsurfs that actually generate a reference
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will have been emited to the bspfile arrays, and the references
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will have valid final indexes
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=====================
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*/
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void FilterDrawsurfsIntoTree( entity_t *e, tree_t *tree ) {
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int i;
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mapDrawSurface_t *ds;
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int refs;
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int c_surfs, c_refs;
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qprintf( "----- FilterDrawsurfsIntoTree -----\n");
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c_surfs = 0;
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c_refs = 0;
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for ( i = e->firstDrawSurf ; i < numMapDrawSurfs ; i++ ) {
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ds = &mapDrawSurfs[i];
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if ( !ds->numVerts && !ds->flareSurface ) {
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continue;
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}
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if ( ds->miscModel ) {
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refs = FilterMiscModelSurfIntoTree( ds, tree );
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EmitModelSurf( ds );
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} else if ( ds->patch ) {
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refs = FilterPatchSurfIntoTree( ds, tree );
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EmitPatchSurf( ds );
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} else if ( ds->flareSurface ) {
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refs = FilterFlareSurfIntoTree( ds, tree );
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EmitFlareSurf( ds );
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} else {
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refs = FilterFaceIntoTree( ds, tree );
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// if ( ds->shaderInfo->value >= 1000 ) { // ds->shaderInfo->flareShader[0] ) {
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if ( ds->shaderInfo->flareShader[0] ) {
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CreateFlareSurface( ds );
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}
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EmitPlanarSurf( ds );
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}
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if ( refs > 0 ) {
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c_surfs++;
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c_refs += refs;
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}
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}
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qprintf( "%5i emited drawsurfs\n", c_surfs );
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qprintf( "%5i references\n", c_refs );
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qprintf( "%5i stripfaces\n", c_stripSurfaces );
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qprintf( "%5i fanfaces\n", c_fanSurfaces );
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}
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