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e6209f3b7c
The number of draw surfaces was range checked against number of surfaces for the current view but needs to check total for the frame otherwise can read past the end of the tr.refdef.drawSurfs array when there are multiple views.
1395 lines
35 KiB
C
1395 lines
35 KiB
C
/*
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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 Quake III Arena source code; 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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// tr_main.c -- main control flow for each frame
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#include "tr_local.h"
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#include <string.h> // memcpy
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trGlobals_t tr;
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static float s_flipMatrix[16] = {
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// convert from our coordinate system (looking down X)
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// to OpenGL's coordinate system (looking down -Z)
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0, 0, -1, 0,
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-1, 0, 0, 0,
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0, 1, 0, 0,
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0, 0, 0, 1
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};
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refimport_t ri;
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// entities that will have procedurally generated surfaces will just
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// point at this for their sorting surface
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surfaceType_t entitySurface = SF_ENTITY;
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/*
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=================
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R_CullLocalBox
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Returns CULL_IN, CULL_CLIP, or CULL_OUT
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=================
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*/
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int R_CullLocalBox (vec3_t bounds[2]) {
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int i, j;
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vec3_t transformed[8];
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float dists[8];
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vec3_t v;
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cplane_t *frust;
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int anyBack;
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int front, back;
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if ( r_nocull->integer ) {
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return CULL_CLIP;
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}
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// transform into world space
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for (i = 0 ; i < 8 ; i++) {
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v[0] = bounds[i&1][0];
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v[1] = bounds[(i>>1)&1][1];
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v[2] = bounds[(i>>2)&1][2];
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VectorCopy( tr.or.origin, transformed[i] );
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VectorMA( transformed[i], v[0], tr.or.axis[0], transformed[i] );
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VectorMA( transformed[i], v[1], tr.or.axis[1], transformed[i] );
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VectorMA( transformed[i], v[2], tr.or.axis[2], transformed[i] );
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}
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// check against frustum planes
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anyBack = 0;
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for (i = 0 ; i < 4 ; i++) {
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frust = &tr.viewParms.frustum[i];
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front = back = 0;
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for (j = 0 ; j < 8 ; j++) {
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dists[j] = DotProduct(transformed[j], frust->normal);
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if ( dists[j] > frust->dist ) {
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front = 1;
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if ( back ) {
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break; // a point is in front
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}
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} else {
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back = 1;
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}
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}
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if ( !front ) {
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// all points were behind one of the planes
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return CULL_OUT;
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}
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anyBack |= back;
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}
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if ( !anyBack ) {
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return CULL_IN; // completely inside frustum
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}
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return CULL_CLIP; // partially clipped
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}
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/*
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** R_CullLocalPointAndRadius
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*/
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int R_CullLocalPointAndRadius( vec3_t pt, float radius )
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{
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vec3_t transformed;
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R_LocalPointToWorld( pt, transformed );
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return R_CullPointAndRadius( transformed, radius );
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}
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/*
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** R_CullPointAndRadius
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*/
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int R_CullPointAndRadius( vec3_t pt, float radius )
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{
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int i;
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float dist;
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cplane_t *frust;
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qboolean mightBeClipped = qfalse;
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if ( r_nocull->integer ) {
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return CULL_CLIP;
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}
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// check against frustum planes
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for (i = 0 ; i < 4 ; i++)
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{
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frust = &tr.viewParms.frustum[i];
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dist = DotProduct( pt, frust->normal) - frust->dist;
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if ( dist < -radius )
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{
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return CULL_OUT;
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}
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else if ( dist <= radius )
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{
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mightBeClipped = qtrue;
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}
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}
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if ( mightBeClipped )
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{
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return CULL_CLIP;
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}
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return CULL_IN; // completely inside frustum
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}
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/*
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=================
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R_LocalNormalToWorld
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=================
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*/
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void R_LocalNormalToWorld (vec3_t local, vec3_t world) {
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world[0] = local[0] * tr.or.axis[0][0] + local[1] * tr.or.axis[1][0] + local[2] * tr.or.axis[2][0];
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world[1] = local[0] * tr.or.axis[0][1] + local[1] * tr.or.axis[1][1] + local[2] * tr.or.axis[2][1];
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world[2] = local[0] * tr.or.axis[0][2] + local[1] * tr.or.axis[1][2] + local[2] * tr.or.axis[2][2];
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}
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/*
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=================
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R_LocalPointToWorld
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=================
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*/
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void R_LocalPointToWorld (vec3_t local, vec3_t world) {
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world[0] = local[0] * tr.or.axis[0][0] + local[1] * tr.or.axis[1][0] + local[2] * tr.or.axis[2][0] + tr.or.origin[0];
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world[1] = local[0] * tr.or.axis[0][1] + local[1] * tr.or.axis[1][1] + local[2] * tr.or.axis[2][1] + tr.or.origin[1];
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world[2] = local[0] * tr.or.axis[0][2] + local[1] * tr.or.axis[1][2] + local[2] * tr.or.axis[2][2] + tr.or.origin[2];
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}
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/*
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=================
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R_WorldToLocal
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=================
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*/
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void R_WorldToLocal (vec3_t world, vec3_t local) {
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local[0] = DotProduct(world, tr.or.axis[0]);
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local[1] = DotProduct(world, tr.or.axis[1]);
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local[2] = DotProduct(world, tr.or.axis[2]);
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}
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/*
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==========================
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R_TransformModelToClip
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==========================
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*/
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void R_TransformModelToClip( const vec3_t src, const float *modelMatrix, const float *projectionMatrix,
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vec4_t eye, vec4_t dst ) {
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int i;
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for ( i = 0 ; i < 4 ; i++ ) {
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eye[i] =
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src[0] * modelMatrix[ i + 0 * 4 ] +
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src[1] * modelMatrix[ i + 1 * 4 ] +
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src[2] * modelMatrix[ i + 2 * 4 ] +
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1 * modelMatrix[ i + 3 * 4 ];
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}
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for ( i = 0 ; i < 4 ; i++ ) {
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dst[i] =
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eye[0] * projectionMatrix[ i + 0 * 4 ] +
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eye[1] * projectionMatrix[ i + 1 * 4 ] +
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eye[2] * projectionMatrix[ i + 2 * 4 ] +
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eye[3] * projectionMatrix[ i + 3 * 4 ];
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}
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}
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/*
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==========================
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R_TransformClipToWindow
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==========================
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*/
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void R_TransformClipToWindow( const vec4_t clip, const viewParms_t *view, vec4_t normalized, vec4_t window ) {
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normalized[0] = clip[0] / clip[3];
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normalized[1] = clip[1] / clip[3];
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normalized[2] = ( clip[2] + clip[3] ) / ( 2 * clip[3] );
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window[0] = 0.5f * ( 1.0f + normalized[0] ) * view->viewportWidth;
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window[1] = 0.5f * ( 1.0f + normalized[1] ) * view->viewportHeight;
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window[2] = normalized[2];
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window[0] = (int) ( window[0] + 0.5 );
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window[1] = (int) ( window[1] + 0.5 );
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}
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/*
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==========================
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myGlMultMatrix
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==========================
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*/
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void myGlMultMatrix( const float *a, const float *b, float *out ) {
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int i, j;
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for ( i = 0 ; i < 4 ; i++ ) {
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for ( j = 0 ; j < 4 ; j++ ) {
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out[ i * 4 + j ] =
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a [ i * 4 + 0 ] * b [ 0 * 4 + j ]
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+ a [ i * 4 + 1 ] * b [ 1 * 4 + j ]
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+ a [ i * 4 + 2 ] * b [ 2 * 4 + j ]
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+ a [ i * 4 + 3 ] * b [ 3 * 4 + j ];
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}
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}
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}
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/*
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=================
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R_RotateForEntity
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Generates an orientation for an entity and viewParms
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Does NOT produce any GL calls
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Called by both the front end and the back end
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=================
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*/
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void R_RotateForEntity( const trRefEntity_t *ent, const viewParms_t *viewParms,
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orientationr_t *or ) {
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float glMatrix[16];
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vec3_t delta;
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float axisLength;
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if ( ent->e.reType != RT_MODEL ) {
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*or = viewParms->world;
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return;
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}
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VectorCopy( ent->e.origin, or->origin );
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VectorCopy( ent->e.axis[0], or->axis[0] );
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VectorCopy( ent->e.axis[1], or->axis[1] );
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VectorCopy( ent->e.axis[2], or->axis[2] );
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glMatrix[0] = or->axis[0][0];
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glMatrix[4] = or->axis[1][0];
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glMatrix[8] = or->axis[2][0];
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glMatrix[12] = or->origin[0];
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glMatrix[1] = or->axis[0][1];
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glMatrix[5] = or->axis[1][1];
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glMatrix[9] = or->axis[2][1];
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glMatrix[13] = or->origin[1];
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glMatrix[2] = or->axis[0][2];
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glMatrix[6] = or->axis[1][2];
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glMatrix[10] = or->axis[2][2];
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glMatrix[14] = or->origin[2];
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glMatrix[3] = 0;
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glMatrix[7] = 0;
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glMatrix[11] = 0;
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glMatrix[15] = 1;
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myGlMultMatrix( glMatrix, viewParms->world.modelMatrix, or->modelMatrix );
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// calculate the viewer origin in the model's space
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// needed for fog, specular, and environment mapping
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VectorSubtract( viewParms->or.origin, or->origin, delta );
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// compensate for scale in the axes if necessary
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if ( ent->e.nonNormalizedAxes ) {
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axisLength = VectorLength( ent->e.axis[0] );
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if ( !axisLength ) {
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axisLength = 0;
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} else {
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axisLength = 1.0f / axisLength;
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}
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} else {
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axisLength = 1.0f;
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}
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or->viewOrigin[0] = DotProduct( delta, or->axis[0] ) * axisLength;
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or->viewOrigin[1] = DotProduct( delta, or->axis[1] ) * axisLength;
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or->viewOrigin[2] = DotProduct( delta, or->axis[2] ) * axisLength;
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}
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/*
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=================
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R_RotateForViewer
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Sets up the modelview matrix for a given viewParm
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=================
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*/
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void R_RotateForViewer (void)
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{
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float viewerMatrix[16];
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vec3_t origin;
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Com_Memset (&tr.or, 0, sizeof(tr.or));
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tr.or.axis[0][0] = 1;
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tr.or.axis[1][1] = 1;
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tr.or.axis[2][2] = 1;
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VectorCopy (tr.viewParms.or.origin, tr.or.viewOrigin);
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// transform by the camera placement
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VectorCopy( tr.viewParms.or.origin, origin );
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viewerMatrix[0] = tr.viewParms.or.axis[0][0];
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viewerMatrix[4] = tr.viewParms.or.axis[0][1];
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viewerMatrix[8] = tr.viewParms.or.axis[0][2];
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viewerMatrix[12] = -origin[0] * viewerMatrix[0] + -origin[1] * viewerMatrix[4] + -origin[2] * viewerMatrix[8];
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viewerMatrix[1] = tr.viewParms.or.axis[1][0];
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viewerMatrix[5] = tr.viewParms.or.axis[1][1];
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viewerMatrix[9] = tr.viewParms.or.axis[1][2];
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viewerMatrix[13] = -origin[0] * viewerMatrix[1] + -origin[1] * viewerMatrix[5] + -origin[2] * viewerMatrix[9];
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viewerMatrix[2] = tr.viewParms.or.axis[2][0];
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viewerMatrix[6] = tr.viewParms.or.axis[2][1];
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viewerMatrix[10] = tr.viewParms.or.axis[2][2];
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viewerMatrix[14] = -origin[0] * viewerMatrix[2] + -origin[1] * viewerMatrix[6] + -origin[2] * viewerMatrix[10];
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viewerMatrix[3] = 0;
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viewerMatrix[7] = 0;
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viewerMatrix[11] = 0;
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viewerMatrix[15] = 1;
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// convert from our coordinate system (looking down X)
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// to OpenGL's coordinate system (looking down -Z)
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myGlMultMatrix( viewerMatrix, s_flipMatrix, tr.or.modelMatrix );
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tr.viewParms.world = tr.or;
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}
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/*
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** SetFarClip
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*/
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static void R_SetFarClip( void )
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{
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float farthestCornerDistance = 0;
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int i;
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// if not rendering the world (icons, menus, etc)
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// set a 2k far clip plane
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if ( tr.refdef.rdflags & RDF_NOWORLDMODEL ) {
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tr.viewParms.zFar = 2048;
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return;
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}
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//
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// set far clipping planes dynamically
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//
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farthestCornerDistance = 0;
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for ( i = 0; i < 8; i++ )
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{
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vec3_t v;
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vec3_t vecTo;
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float distance;
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if ( i & 1 )
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{
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v[0] = tr.viewParms.visBounds[0][0];
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}
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else
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{
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v[0] = tr.viewParms.visBounds[1][0];
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}
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if ( i & 2 )
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{
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v[1] = tr.viewParms.visBounds[0][1];
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}
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else
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{
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v[1] = tr.viewParms.visBounds[1][1];
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}
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if ( i & 4 )
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{
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v[2] = tr.viewParms.visBounds[0][2];
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}
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else
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{
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v[2] = tr.viewParms.visBounds[1][2];
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}
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VectorSubtract( v, tr.viewParms.or.origin, vecTo );
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distance = vecTo[0] * vecTo[0] + vecTo[1] * vecTo[1] + vecTo[2] * vecTo[2];
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if ( distance > farthestCornerDistance )
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{
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farthestCornerDistance = distance;
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}
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}
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tr.viewParms.zFar = sqrt( farthestCornerDistance );
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}
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/*
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=================
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R_SetupFrustum
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Set up the culling frustum planes for the current view using the results we got from computing the first two rows of
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the projection matrix.
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=================
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*/
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void R_SetupFrustum (viewParms_t *dest, float xmin, float xmax, float ymax, float zProj, float stereoSep)
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{
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vec3_t ofsorigin;
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float oppleg, adjleg, length;
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int i;
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if(stereoSep == 0 && xmin == -xmax)
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{
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// symmetric case can be simplified
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VectorCopy(dest->or.origin, ofsorigin);
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length = sqrt(xmax * xmax + zProj * zProj);
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oppleg = xmax / length;
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adjleg = zProj / length;
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VectorScale(dest->or.axis[0], oppleg, dest->frustum[0].normal);
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VectorMA(dest->frustum[0].normal, adjleg, dest->or.axis[1], dest->frustum[0].normal);
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VectorScale(dest->or.axis[0], oppleg, dest->frustum[1].normal);
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VectorMA(dest->frustum[1].normal, -adjleg, dest->or.axis[1], dest->frustum[1].normal);
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}
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else
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{
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// In stereo rendering, due to the modification of the projection matrix, dest->or.origin is not the
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// actual origin that we're rendering so offset the tip of the view pyramid.
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VectorMA(dest->or.origin, stereoSep, dest->or.axis[1], ofsorigin);
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oppleg = xmax + stereoSep;
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length = sqrt(oppleg * oppleg + zProj * zProj);
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VectorScale(dest->or.axis[0], oppleg / length, dest->frustum[0].normal);
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VectorMA(dest->frustum[0].normal, zProj / length, dest->or.axis[1], dest->frustum[0].normal);
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oppleg = xmin + stereoSep;
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length = sqrt(oppleg * oppleg + zProj * zProj);
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VectorScale(dest->or.axis[0], -oppleg / length, dest->frustum[1].normal);
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VectorMA(dest->frustum[1].normal, -zProj / length, dest->or.axis[1], dest->frustum[1].normal);
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}
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length = sqrt(ymax * ymax + zProj * zProj);
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oppleg = ymax / length;
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adjleg = zProj / length;
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VectorScale(dest->or.axis[0], oppleg, dest->frustum[2].normal);
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VectorMA(dest->frustum[2].normal, adjleg, dest->or.axis[2], dest->frustum[2].normal);
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VectorScale(dest->or.axis[0], oppleg, dest->frustum[3].normal);
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VectorMA(dest->frustum[3].normal, -adjleg, dest->or.axis[2], dest->frustum[3].normal);
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|
|
for (i=0 ; i<4 ; i++) {
|
|
dest->frustum[i].type = PLANE_NON_AXIAL;
|
|
dest->frustum[i].dist = DotProduct (ofsorigin, dest->frustum[i].normal);
|
|
SetPlaneSignbits( &dest->frustum[i] );
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_SetupProjection
|
|
===============
|
|
*/
|
|
void R_SetupProjection(viewParms_t *dest, float zProj, qboolean computeFrustum)
|
|
{
|
|
float xmin, xmax, ymin, ymax;
|
|
float width, height, stereoSep = r_stereoSeparation->value;
|
|
|
|
/*
|
|
* offset the view origin of the viewer for stereo rendering
|
|
* by setting the projection matrix appropriately.
|
|
*/
|
|
|
|
if(stereoSep != 0)
|
|
{
|
|
if(dest->stereoFrame == STEREO_LEFT)
|
|
stereoSep = zProj / stereoSep;
|
|
else if(dest->stereoFrame == STEREO_RIGHT)
|
|
stereoSep = zProj / -stereoSep;
|
|
else
|
|
stereoSep = 0;
|
|
}
|
|
|
|
ymax = zProj * tan(dest->fovY * M_PI / 360.0f);
|
|
ymin = -ymax;
|
|
|
|
xmax = zProj * tan(dest->fovX * M_PI / 360.0f);
|
|
xmin = -xmax;
|
|
|
|
width = xmax - xmin;
|
|
height = ymax - ymin;
|
|
|
|
dest->projectionMatrix[0] = 2 * zProj / width;
|
|
dest->projectionMatrix[4] = 0;
|
|
dest->projectionMatrix[8] = (xmax + xmin + 2 * stereoSep) / width;
|
|
dest->projectionMatrix[12] = 2 * zProj * stereoSep / width;
|
|
|
|
dest->projectionMatrix[1] = 0;
|
|
dest->projectionMatrix[5] = 2 * zProj / height;
|
|
dest->projectionMatrix[9] = ( ymax + ymin ) / height; // normally 0
|
|
dest->projectionMatrix[13] = 0;
|
|
|
|
dest->projectionMatrix[3] = 0;
|
|
dest->projectionMatrix[7] = 0;
|
|
dest->projectionMatrix[11] = -1;
|
|
dest->projectionMatrix[15] = 0;
|
|
|
|
// Now that we have all the data for the projection matrix we can also setup the view frustum.
|
|
if(computeFrustum)
|
|
R_SetupFrustum(dest, xmin, xmax, ymax, zProj, stereoSep);
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_SetupProjectionZ
|
|
|
|
Sets the z-component transformation part in the projection matrix
|
|
===============
|
|
*/
|
|
void R_SetupProjectionZ(viewParms_t *dest)
|
|
{
|
|
float zNear, zFar, depth;
|
|
|
|
zNear = r_znear->value;
|
|
zFar = dest->zFar;
|
|
depth = zFar - zNear;
|
|
|
|
dest->projectionMatrix[2] = 0;
|
|
dest->projectionMatrix[6] = 0;
|
|
dest->projectionMatrix[10] = -( zFar + zNear ) / depth;
|
|
dest->projectionMatrix[14] = -2 * zFar * zNear / depth;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_MirrorPoint
|
|
=================
|
|
*/
|
|
void R_MirrorPoint (vec3_t in, orientation_t *surface, orientation_t *camera, vec3_t out) {
|
|
int i;
|
|
vec3_t local;
|
|
vec3_t transformed;
|
|
float d;
|
|
|
|
VectorSubtract( in, surface->origin, local );
|
|
|
|
VectorClear( transformed );
|
|
for ( i = 0 ; i < 3 ; i++ ) {
|
|
d = DotProduct(local, surface->axis[i]);
|
|
VectorMA( transformed, d, camera->axis[i], transformed );
|
|
}
|
|
|
|
VectorAdd( transformed, camera->origin, out );
|
|
}
|
|
|
|
void R_MirrorVector (vec3_t in, orientation_t *surface, orientation_t *camera, vec3_t out) {
|
|
int i;
|
|
float d;
|
|
|
|
VectorClear( out );
|
|
for ( i = 0 ; i < 3 ; i++ ) {
|
|
d = DotProduct(in, surface->axis[i]);
|
|
VectorMA( out, d, camera->axis[i], out );
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
R_PlaneForSurface
|
|
=============
|
|
*/
|
|
void R_PlaneForSurface (surfaceType_t *surfType, cplane_t *plane) {
|
|
srfTriangles_t *tri;
|
|
srfPoly_t *poly;
|
|
drawVert_t *v1, *v2, *v3;
|
|
vec4_t plane4;
|
|
|
|
if (!surfType) {
|
|
Com_Memset (plane, 0, sizeof(*plane));
|
|
plane->normal[0] = 1;
|
|
return;
|
|
}
|
|
switch (*surfType) {
|
|
case SF_FACE:
|
|
*plane = ((srfSurfaceFace_t *)surfType)->plane;
|
|
return;
|
|
case SF_TRIANGLES:
|
|
tri = (srfTriangles_t *)surfType;
|
|
v1 = tri->verts + tri->indexes[0];
|
|
v2 = tri->verts + tri->indexes[1];
|
|
v3 = tri->verts + tri->indexes[2];
|
|
PlaneFromPoints( plane4, v1->xyz, v2->xyz, v3->xyz );
|
|
VectorCopy( plane4, plane->normal );
|
|
plane->dist = plane4[3];
|
|
return;
|
|
case SF_POLY:
|
|
poly = (srfPoly_t *)surfType;
|
|
PlaneFromPoints( plane4, poly->verts[0].xyz, poly->verts[1].xyz, poly->verts[2].xyz );
|
|
VectorCopy( plane4, plane->normal );
|
|
plane->dist = plane4[3];
|
|
return;
|
|
default:
|
|
Com_Memset (plane, 0, sizeof(*plane));
|
|
plane->normal[0] = 1;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_GetPortalOrientation
|
|
|
|
entityNum is the entity that the portal surface is a part of, which may
|
|
be moving and rotating.
|
|
|
|
Returns qtrue if it should be mirrored
|
|
=================
|
|
*/
|
|
qboolean R_GetPortalOrientations( drawSurf_t *drawSurf, int entityNum,
|
|
orientation_t *surface, orientation_t *camera,
|
|
vec3_t pvsOrigin, qboolean *mirror ) {
|
|
int i;
|
|
cplane_t originalPlane, plane;
|
|
trRefEntity_t *e;
|
|
float d;
|
|
vec3_t transformed;
|
|
|
|
// create plane axis for the portal we are seeing
|
|
R_PlaneForSurface( drawSurf->surface, &originalPlane );
|
|
|
|
// rotate the plane if necessary
|
|
if ( entityNum != REFENTITYNUM_WORLD ) {
|
|
tr.currentEntityNum = entityNum;
|
|
tr.currentEntity = &tr.refdef.entities[entityNum];
|
|
|
|
// get the orientation of the entity
|
|
R_RotateForEntity( tr.currentEntity, &tr.viewParms, &tr.or );
|
|
|
|
// rotate the plane, but keep the non-rotated version for matching
|
|
// against the portalSurface entities
|
|
R_LocalNormalToWorld( originalPlane.normal, plane.normal );
|
|
plane.dist = originalPlane.dist + DotProduct( plane.normal, tr.or.origin );
|
|
|
|
// translate the original plane
|
|
originalPlane.dist = originalPlane.dist + DotProduct( originalPlane.normal, tr.or.origin );
|
|
} else {
|
|
plane = originalPlane;
|
|
}
|
|
|
|
VectorCopy( plane.normal, surface->axis[0] );
|
|
PerpendicularVector( surface->axis[1], surface->axis[0] );
|
|
CrossProduct( surface->axis[0], surface->axis[1], surface->axis[2] );
|
|
|
|
// locate the portal entity closest to this plane.
|
|
// origin will be the origin of the portal, origin2 will be
|
|
// the origin of the camera
|
|
for ( i = 0 ; i < tr.refdef.num_entities ; i++ ) {
|
|
e = &tr.refdef.entities[i];
|
|
if ( e->e.reType != RT_PORTALSURFACE ) {
|
|
continue;
|
|
}
|
|
|
|
d = DotProduct( e->e.origin, originalPlane.normal ) - originalPlane.dist;
|
|
if ( d > 64 || d < -64) {
|
|
continue;
|
|
}
|
|
|
|
// get the pvsOrigin from the entity
|
|
VectorCopy( e->e.oldorigin, pvsOrigin );
|
|
|
|
// if the entity is just a mirror, don't use as a camera point
|
|
if ( e->e.oldorigin[0] == e->e.origin[0] &&
|
|
e->e.oldorigin[1] == e->e.origin[1] &&
|
|
e->e.oldorigin[2] == e->e.origin[2] ) {
|
|
VectorScale( plane.normal, plane.dist, surface->origin );
|
|
VectorCopy( surface->origin, camera->origin );
|
|
VectorSubtract( vec3_origin, surface->axis[0], camera->axis[0] );
|
|
VectorCopy( surface->axis[1], camera->axis[1] );
|
|
VectorCopy( surface->axis[2], camera->axis[2] );
|
|
|
|
*mirror = qtrue;
|
|
return qtrue;
|
|
}
|
|
|
|
// project the origin onto the surface plane to get
|
|
// an origin point we can rotate around
|
|
d = DotProduct( e->e.origin, plane.normal ) - plane.dist;
|
|
VectorMA( e->e.origin, -d, surface->axis[0], surface->origin );
|
|
|
|
// now get the camera origin and orientation
|
|
VectorCopy( e->e.oldorigin, camera->origin );
|
|
AxisCopy( e->e.axis, camera->axis );
|
|
VectorSubtract( vec3_origin, camera->axis[0], camera->axis[0] );
|
|
VectorSubtract( vec3_origin, camera->axis[1], camera->axis[1] );
|
|
|
|
// optionally rotate
|
|
if ( e->e.oldframe ) {
|
|
// if a speed is specified
|
|
if ( e->e.frame ) {
|
|
// continuous rotate
|
|
d = (tr.refdef.time/1000.0f) * e->e.frame;
|
|
VectorCopy( camera->axis[1], transformed );
|
|
RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d );
|
|
CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] );
|
|
} else {
|
|
// bobbing rotate, with skinNum being the rotation offset
|
|
d = sin( tr.refdef.time * 0.003f );
|
|
d = e->e.skinNum + d * 4;
|
|
VectorCopy( camera->axis[1], transformed );
|
|
RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d );
|
|
CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] );
|
|
}
|
|
}
|
|
else if ( e->e.skinNum ) {
|
|
d = e->e.skinNum;
|
|
VectorCopy( camera->axis[1], transformed );
|
|
RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d );
|
|
CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] );
|
|
}
|
|
*mirror = qfalse;
|
|
return qtrue;
|
|
}
|
|
|
|
// if we didn't locate a portal entity, don't render anything.
|
|
// We don't want to just treat it as a mirror, because without a
|
|
// portal entity the server won't have communicated a proper entity set
|
|
// in the snapshot
|
|
|
|
// unfortunately, with local movement prediction it is easily possible
|
|
// to see a surface before the server has communicated the matching
|
|
// portal surface entity, so we don't want to print anything here...
|
|
|
|
//ri.Printf( PRINT_ALL, "Portal surface without a portal entity\n" );
|
|
|
|
return qfalse;
|
|
}
|
|
|
|
static qboolean IsMirror( const drawSurf_t *drawSurf, int entityNum )
|
|
{
|
|
int i;
|
|
cplane_t originalPlane, plane;
|
|
trRefEntity_t *e;
|
|
float d;
|
|
|
|
// create plane axis for the portal we are seeing
|
|
R_PlaneForSurface( drawSurf->surface, &originalPlane );
|
|
|
|
// rotate the plane if necessary
|
|
if ( entityNum != REFENTITYNUM_WORLD )
|
|
{
|
|
tr.currentEntityNum = entityNum;
|
|
tr.currentEntity = &tr.refdef.entities[entityNum];
|
|
|
|
// get the orientation of the entity
|
|
R_RotateForEntity( tr.currentEntity, &tr.viewParms, &tr.or );
|
|
|
|
// rotate the plane, but keep the non-rotated version for matching
|
|
// against the portalSurface entities
|
|
R_LocalNormalToWorld( originalPlane.normal, plane.normal );
|
|
plane.dist = originalPlane.dist + DotProduct( plane.normal, tr.or.origin );
|
|
|
|
// translate the original plane
|
|
originalPlane.dist = originalPlane.dist + DotProduct( originalPlane.normal, tr.or.origin );
|
|
}
|
|
|
|
// locate the portal entity closest to this plane.
|
|
// origin will be the origin of the portal, origin2 will be
|
|
// the origin of the camera
|
|
for ( i = 0 ; i < tr.refdef.num_entities ; i++ )
|
|
{
|
|
e = &tr.refdef.entities[i];
|
|
if ( e->e.reType != RT_PORTALSURFACE ) {
|
|
continue;
|
|
}
|
|
|
|
d = DotProduct( e->e.origin, originalPlane.normal ) - originalPlane.dist;
|
|
if ( d > 64 || d < -64) {
|
|
continue;
|
|
}
|
|
|
|
// if the entity is just a mirror, don't use as a camera point
|
|
if ( e->e.oldorigin[0] == e->e.origin[0] &&
|
|
e->e.oldorigin[1] == e->e.origin[1] &&
|
|
e->e.oldorigin[2] == e->e.origin[2] )
|
|
{
|
|
return qtrue;
|
|
}
|
|
|
|
return qfalse;
|
|
}
|
|
return qfalse;
|
|
}
|
|
|
|
/*
|
|
** SurfIsOffscreen
|
|
**
|
|
** Determines if a surface is completely offscreen.
|
|
*/
|
|
static qboolean SurfIsOffscreen( const drawSurf_t *drawSurf, vec4_t clipDest[128] ) {
|
|
float shortest = 100000000;
|
|
int entityNum;
|
|
int numTriangles;
|
|
shader_t *shader;
|
|
int fogNum;
|
|
int dlighted;
|
|
vec4_t clip, eye;
|
|
int i;
|
|
unsigned int pointOr = 0;
|
|
unsigned int pointAnd = (unsigned int)~0;
|
|
|
|
R_RotateForViewer();
|
|
|
|
R_DecomposeSort( drawSurf->sort, &entityNum, &shader, &fogNum, &dlighted );
|
|
RB_BeginSurface( shader, fogNum );
|
|
rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface );
|
|
|
|
assert( tess.numVertexes < 128 );
|
|
|
|
for ( i = 0; i < tess.numVertexes; i++ )
|
|
{
|
|
int j;
|
|
unsigned int pointFlags = 0;
|
|
|
|
R_TransformModelToClip( tess.xyz[i], tr.or.modelMatrix, tr.viewParms.projectionMatrix, eye, clip );
|
|
|
|
for ( j = 0; j < 3; j++ )
|
|
{
|
|
if ( clip[j] >= clip[3] )
|
|
{
|
|
pointFlags |= (1 << (j*2));
|
|
}
|
|
else if ( clip[j] <= -clip[3] )
|
|
{
|
|
pointFlags |= ( 1 << (j*2+1));
|
|
}
|
|
}
|
|
pointAnd &= pointFlags;
|
|
pointOr |= pointFlags;
|
|
}
|
|
|
|
// trivially reject
|
|
if ( pointAnd )
|
|
{
|
|
return qtrue;
|
|
}
|
|
|
|
// determine if this surface is backfaced and also determine the distance
|
|
// to the nearest vertex so we can cull based on portal range. Culling
|
|
// based on vertex distance isn't 100% correct (we should be checking for
|
|
// range to the surface), but it's good enough for the types of portals
|
|
// we have in the game right now.
|
|
numTriangles = tess.numIndexes / 3;
|
|
|
|
for ( i = 0; i < tess.numIndexes; i += 3 )
|
|
{
|
|
vec3_t normal;
|
|
float len;
|
|
|
|
VectorSubtract( tess.xyz[tess.indexes[i]], tr.viewParms.or.origin, normal );
|
|
|
|
len = VectorLengthSquared( normal ); // lose the sqrt
|
|
if ( len < shortest )
|
|
{
|
|
shortest = len;
|
|
}
|
|
|
|
if ( DotProduct( normal, tess.normal[tess.indexes[i]] ) >= 0 )
|
|
{
|
|
numTriangles--;
|
|
}
|
|
}
|
|
if ( !numTriangles )
|
|
{
|
|
return qtrue;
|
|
}
|
|
|
|
// mirrors can early out at this point, since we don't do a fade over distance
|
|
// with them (although we could)
|
|
if ( IsMirror( drawSurf, entityNum ) )
|
|
{
|
|
return qfalse;
|
|
}
|
|
|
|
if ( shortest > (tess.shader->portalRange*tess.shader->portalRange) )
|
|
{
|
|
return qtrue;
|
|
}
|
|
|
|
return qfalse;
|
|
}
|
|
|
|
/*
|
|
========================
|
|
R_MirrorViewBySurface
|
|
|
|
Returns qtrue if another view has been rendered
|
|
========================
|
|
*/
|
|
qboolean R_MirrorViewBySurface (drawSurf_t *drawSurf, int entityNum) {
|
|
vec4_t clipDest[128];
|
|
viewParms_t newParms;
|
|
viewParms_t oldParms;
|
|
orientation_t surface, camera;
|
|
|
|
// don't recursively mirror
|
|
if (tr.viewParms.isPortal) {
|
|
ri.Printf( PRINT_DEVELOPER, "WARNING: recursive mirror/portal found\n" );
|
|
return qfalse;
|
|
}
|
|
|
|
if ( r_noportals->integer || (r_fastsky->integer == 1) ) {
|
|
return qfalse;
|
|
}
|
|
|
|
// trivially reject portal/mirror
|
|
if ( SurfIsOffscreen( drawSurf, clipDest ) ) {
|
|
return qfalse;
|
|
}
|
|
|
|
// save old viewParms so we can return to it after the mirror view
|
|
oldParms = tr.viewParms;
|
|
|
|
newParms = tr.viewParms;
|
|
newParms.isPortal = qtrue;
|
|
if ( !R_GetPortalOrientations( drawSurf, entityNum, &surface, &camera,
|
|
newParms.pvsOrigin, &newParms.isMirror ) ) {
|
|
return qfalse; // bad portal, no portalentity
|
|
}
|
|
|
|
R_MirrorPoint (oldParms.or.origin, &surface, &camera, newParms.or.origin );
|
|
|
|
VectorSubtract( vec3_origin, camera.axis[0], newParms.portalPlane.normal );
|
|
newParms.portalPlane.dist = DotProduct( camera.origin, newParms.portalPlane.normal );
|
|
|
|
R_MirrorVector (oldParms.or.axis[0], &surface, &camera, newParms.or.axis[0]);
|
|
R_MirrorVector (oldParms.or.axis[1], &surface, &camera, newParms.or.axis[1]);
|
|
R_MirrorVector (oldParms.or.axis[2], &surface, &camera, newParms.or.axis[2]);
|
|
|
|
// OPTIMIZE: restrict the viewport on the mirrored view
|
|
|
|
// render the mirror view
|
|
R_RenderView (&newParms);
|
|
|
|
tr.viewParms = oldParms;
|
|
|
|
return qtrue;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_SpriteFogNum
|
|
|
|
See if a sprite is inside a fog volume
|
|
=================
|
|
*/
|
|
int R_SpriteFogNum( trRefEntity_t *ent ) {
|
|
int i, j;
|
|
fog_t *fog;
|
|
|
|
if ( tr.refdef.rdflags & RDF_NOWORLDMODEL ) {
|
|
return 0;
|
|
}
|
|
|
|
if ( ent->e.renderfx & RF_CROSSHAIR ) {
|
|
return 0;
|
|
}
|
|
|
|
for ( i = 1 ; i < tr.world->numfogs ; i++ ) {
|
|
fog = &tr.world->fogs[i];
|
|
for ( j = 0 ; j < 3 ; j++ ) {
|
|
if ( ent->e.origin[j] - ent->e.radius >= fog->bounds[1][j] ) {
|
|
break;
|
|
}
|
|
if ( ent->e.origin[j] + ent->e.radius <= fog->bounds[0][j] ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( j == 3 ) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
==========================================================================================
|
|
|
|
DRAWSURF SORTING
|
|
|
|
==========================================================================================
|
|
*/
|
|
|
|
/*
|
|
===============
|
|
R_Radix
|
|
===============
|
|
*/
|
|
static ID_INLINE void R_Radix( int byte, int size, drawSurf_t *source, drawSurf_t *dest )
|
|
{
|
|
int count[ 256 ] = { 0 };
|
|
int index[ 256 ];
|
|
int i;
|
|
unsigned char *sortKey = NULL;
|
|
unsigned char *end = NULL;
|
|
|
|
sortKey = ( (unsigned char *)&source[ 0 ].sort ) + byte;
|
|
end = sortKey + ( size * sizeof( drawSurf_t ) );
|
|
for( ; sortKey < end; sortKey += sizeof( drawSurf_t ) )
|
|
++count[ *sortKey ];
|
|
|
|
index[ 0 ] = 0;
|
|
|
|
for( i = 1; i < 256; ++i )
|
|
index[ i ] = index[ i - 1 ] + count[ i - 1 ];
|
|
|
|
sortKey = ( (unsigned char *)&source[ 0 ].sort ) + byte;
|
|
for( i = 0; i < size; ++i, sortKey += sizeof( drawSurf_t ) )
|
|
dest[ index[ *sortKey ]++ ] = source[ i ];
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_RadixSort
|
|
|
|
Radix sort with 4 byte size buckets
|
|
===============
|
|
*/
|
|
static void R_RadixSort( drawSurf_t *source, int size )
|
|
{
|
|
static drawSurf_t scratch[ MAX_DRAWSURFS ];
|
|
#ifdef Q3_LITTLE_ENDIAN
|
|
R_Radix( 0, size, source, scratch );
|
|
R_Radix( 1, size, scratch, source );
|
|
R_Radix( 2, size, source, scratch );
|
|
R_Radix( 3, size, scratch, source );
|
|
#else
|
|
R_Radix( 3, size, source, scratch );
|
|
R_Radix( 2, size, scratch, source );
|
|
R_Radix( 1, size, source, scratch );
|
|
R_Radix( 0, size, scratch, source );
|
|
#endif //Q3_LITTLE_ENDIAN
|
|
}
|
|
|
|
//==========================================================================================
|
|
|
|
/*
|
|
=================
|
|
R_AddDrawSurf
|
|
=================
|
|
*/
|
|
void R_AddDrawSurf( surfaceType_t *surface, shader_t *shader,
|
|
int fogIndex, int dlightMap ) {
|
|
int index;
|
|
|
|
// instead of checking for overflow, we just mask the index
|
|
// so it wraps around
|
|
index = tr.refdef.numDrawSurfs & DRAWSURF_MASK;
|
|
// the sort data is packed into a single 32 bit value so it can be
|
|
// compared quickly during the qsorting process
|
|
tr.refdef.drawSurfs[index].sort = (shader->sortedIndex << QSORT_SHADERNUM_SHIFT)
|
|
| tr.shiftedEntityNum | ( fogIndex << QSORT_FOGNUM_SHIFT ) | (int)dlightMap;
|
|
tr.refdef.drawSurfs[index].surface = surface;
|
|
tr.refdef.numDrawSurfs++;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_DecomposeSort
|
|
=================
|
|
*/
|
|
void R_DecomposeSort( unsigned sort, int *entityNum, shader_t **shader,
|
|
int *fogNum, int *dlightMap ) {
|
|
*fogNum = ( sort >> QSORT_FOGNUM_SHIFT ) & 31;
|
|
*shader = tr.sortedShaders[ ( sort >> QSORT_SHADERNUM_SHIFT ) & (MAX_SHADERS-1) ];
|
|
*entityNum = ( sort >> QSORT_REFENTITYNUM_SHIFT ) & REFENTITYNUM_MASK;
|
|
*dlightMap = sort & 3;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_SortDrawSurfs
|
|
=================
|
|
*/
|
|
void R_SortDrawSurfs( drawSurf_t *drawSurfs, int numDrawSurfs ) {
|
|
shader_t *shader;
|
|
int fogNum;
|
|
int entityNum;
|
|
int dlighted;
|
|
int i;
|
|
|
|
// it is possible for some views to not have any surfaces
|
|
if ( numDrawSurfs < 1 ) {
|
|
// we still need to add it for hyperspace cases
|
|
R_AddDrawSurfCmd( drawSurfs, numDrawSurfs );
|
|
return;
|
|
}
|
|
|
|
// sort the drawsurfs by sort type, then orientation, then shader
|
|
R_RadixSort( drawSurfs, numDrawSurfs );
|
|
|
|
// check for any pass through drawing, which
|
|
// may cause another view to be rendered first
|
|
for ( i = 0 ; i < numDrawSurfs ; i++ ) {
|
|
R_DecomposeSort( (drawSurfs+i)->sort, &entityNum, &shader, &fogNum, &dlighted );
|
|
|
|
if ( shader->sort > SS_PORTAL ) {
|
|
break;
|
|
}
|
|
|
|
// no shader should ever have this sort type
|
|
if ( shader->sort == SS_BAD ) {
|
|
ri.Error (ERR_DROP, "Shader '%s'with sort == SS_BAD", shader->name );
|
|
}
|
|
|
|
// if the mirror was completely clipped away, we may need to check another surface
|
|
if ( R_MirrorViewBySurface( (drawSurfs+i), entityNum) ) {
|
|
// this is a debug option to see exactly what is being mirrored
|
|
if ( r_portalOnly->integer ) {
|
|
return;
|
|
}
|
|
break; // only one mirror view at a time
|
|
}
|
|
}
|
|
|
|
R_AddDrawSurfCmd( drawSurfs, numDrawSurfs );
|
|
}
|
|
|
|
/*
|
|
=============
|
|
R_AddEntitySurfaces
|
|
=============
|
|
*/
|
|
void R_AddEntitySurfaces (void) {
|
|
trRefEntity_t *ent;
|
|
shader_t *shader;
|
|
|
|
if ( !r_drawentities->integer ) {
|
|
return;
|
|
}
|
|
|
|
for ( tr.currentEntityNum = 0;
|
|
tr.currentEntityNum < tr.refdef.num_entities;
|
|
tr.currentEntityNum++ ) {
|
|
ent = tr.currentEntity = &tr.refdef.entities[tr.currentEntityNum];
|
|
|
|
ent->needDlights = qfalse;
|
|
|
|
// preshift the value we are going to OR into the drawsurf sort
|
|
tr.shiftedEntityNum = tr.currentEntityNum << QSORT_REFENTITYNUM_SHIFT;
|
|
|
|
//
|
|
// the weapon model must be handled special --
|
|
// we don't want the hacked weapon position showing in
|
|
// mirrors, because the true body position will already be drawn
|
|
//
|
|
if ( (ent->e.renderfx & RF_FIRST_PERSON) && tr.viewParms.isPortal) {
|
|
continue;
|
|
}
|
|
|
|
// simple generated models, like sprites and beams, are not culled
|
|
switch ( ent->e.reType ) {
|
|
case RT_PORTALSURFACE:
|
|
break; // don't draw anything
|
|
case RT_SPRITE:
|
|
case RT_BEAM:
|
|
case RT_LIGHTNING:
|
|
case RT_RAIL_CORE:
|
|
case RT_RAIL_RINGS:
|
|
// self blood sprites, talk balloons, etc should not be drawn in the primary
|
|
// view. We can't just do this check for all entities, because md3
|
|
// entities may still want to cast shadows from them
|
|
if ( (ent->e.renderfx & RF_THIRD_PERSON) && !tr.viewParms.isPortal) {
|
|
continue;
|
|
}
|
|
shader = R_GetShaderByHandle( ent->e.customShader );
|
|
R_AddDrawSurf( &entitySurface, shader, R_SpriteFogNum( ent ), 0 );
|
|
break;
|
|
|
|
case RT_MODEL:
|
|
// we must set up parts of tr.or for model culling
|
|
R_RotateForEntity( ent, &tr.viewParms, &tr.or );
|
|
|
|
tr.currentModel = R_GetModelByHandle( ent->e.hModel );
|
|
if (!tr.currentModel) {
|
|
R_AddDrawSurf( &entitySurface, tr.defaultShader, 0, 0 );
|
|
} else {
|
|
switch ( tr.currentModel->type ) {
|
|
case MOD_MESH:
|
|
R_AddMD3Surfaces( ent );
|
|
break;
|
|
case MOD_MDR:
|
|
R_MDRAddAnimSurfaces( ent );
|
|
break;
|
|
case MOD_IQM:
|
|
R_AddIQMSurfaces( ent );
|
|
break;
|
|
case MOD_BRUSH:
|
|
R_AddBrushModelSurfaces( ent );
|
|
break;
|
|
case MOD_BAD: // null model axis
|
|
if ( (ent->e.renderfx & RF_THIRD_PERSON) && !tr.viewParms.isPortal) {
|
|
break;
|
|
}
|
|
R_AddDrawSurf( &entitySurface, tr.defaultShader, 0, 0 );
|
|
break;
|
|
default:
|
|
ri.Error( ERR_DROP, "R_AddEntitySurfaces: Bad modeltype" );
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
ri.Error( ERR_DROP, "R_AddEntitySurfaces: Bad reType" );
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
====================
|
|
R_GenerateDrawSurfs
|
|
====================
|
|
*/
|
|
void R_GenerateDrawSurfs( void ) {
|
|
R_AddWorldSurfaces ();
|
|
|
|
R_AddPolygonSurfaces();
|
|
|
|
// set the projection matrix with the minimum zfar
|
|
// now that we have the world bounded
|
|
// this needs to be done before entities are
|
|
// added, because they use the projection
|
|
// matrix for lod calculation
|
|
|
|
// dynamically compute far clip plane distance
|
|
R_SetFarClip();
|
|
|
|
// we know the size of the clipping volume. Now set the rest of the projection matrix.
|
|
R_SetupProjectionZ (&tr.viewParms);
|
|
|
|
R_AddEntitySurfaces ();
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_DebugPolygon
|
|
================
|
|
*/
|
|
void R_DebugPolygon( int color, int numPoints, float *points ) {
|
|
int i;
|
|
|
|
GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE );
|
|
|
|
// draw solid shade
|
|
|
|
qglColor3f( color&1, (color>>1)&1, (color>>2)&1 );
|
|
qglBegin( GL_POLYGON );
|
|
for ( i = 0 ; i < numPoints ; i++ ) {
|
|
qglVertex3fv( points + i * 3 );
|
|
}
|
|
qglEnd();
|
|
|
|
// draw wireframe outline
|
|
GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE );
|
|
qglDepthRange( 0, 0 );
|
|
qglColor3f( 1, 1, 1 );
|
|
qglBegin( GL_POLYGON );
|
|
for ( i = 0 ; i < numPoints ; i++ ) {
|
|
qglVertex3fv( points + i * 3 );
|
|
}
|
|
qglEnd();
|
|
qglDepthRange( 0, 1 );
|
|
}
|
|
|
|
/*
|
|
====================
|
|
R_DebugGraphics
|
|
|
|
Visualization aid for movement clipping debugging
|
|
====================
|
|
*/
|
|
void R_DebugGraphics( void ) {
|
|
if ( !r_debugSurface->integer ) {
|
|
return;
|
|
}
|
|
|
|
R_IssuePendingRenderCommands();
|
|
|
|
GL_Bind( tr.whiteImage);
|
|
GL_Cull( CT_FRONT_SIDED );
|
|
ri.CM_DrawDebugSurface( R_DebugPolygon );
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_RenderView
|
|
|
|
A view may be either the actual camera view,
|
|
or a mirror / remote location
|
|
================
|
|
*/
|
|
void R_RenderView (viewParms_t *parms) {
|
|
int firstDrawSurf;
|
|
int numDrawSurfs;
|
|
|
|
if ( parms->viewportWidth <= 0 || parms->viewportHeight <= 0 ) {
|
|
return;
|
|
}
|
|
|
|
tr.viewCount++;
|
|
|
|
tr.viewParms = *parms;
|
|
tr.viewParms.frameSceneNum = tr.frameSceneNum;
|
|
tr.viewParms.frameCount = tr.frameCount;
|
|
|
|
firstDrawSurf = tr.refdef.numDrawSurfs;
|
|
|
|
tr.viewCount++;
|
|
|
|
// set viewParms.world
|
|
R_RotateForViewer ();
|
|
|
|
R_SetupProjection(&tr.viewParms, r_zproj->value, qtrue);
|
|
|
|
R_GenerateDrawSurfs();
|
|
|
|
// if we overflowed MAX_DRAWSURFS, the drawsurfs
|
|
// wrapped around in the buffer and we will be missing
|
|
// the first surfaces, not the last ones
|
|
numDrawSurfs = tr.refdef.numDrawSurfs;
|
|
if ( numDrawSurfs > MAX_DRAWSURFS ) {
|
|
numDrawSurfs = MAX_DRAWSURFS;
|
|
}
|
|
|
|
R_SortDrawSurfs( tr.refdef.drawSurfs + firstDrawSurf, numDrawSurfs - firstDrawSurf );
|
|
|
|
// draw main system development information (surface outlines, etc)
|
|
R_DebugGraphics();
|
|
}
|
|
|
|
|
|
|