144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
//=======================================================================
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// Copyright XashXT Group 2010 ©
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// gl_rlight.c - dynamic and static lights
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//=======================================================================
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#include "common.h"
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#include "client.h"
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#include "gl_local.h"
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/*
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=============================================================================
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DYNAMIC LIGHTS
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=============================================================================
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*/
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/*
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==================
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R_AnimateLight
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==================
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*/
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void R_AnimateLight( void )
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{
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int i, k, flight, clight;
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float l, lerpfrac, backlerp;
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lightstyle_t *ls;
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// light animations
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// 'm' is normal light, 'a' is no light, 'z' is double bright
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flight = (int)floor( cl.time * 10 );
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clight = (int)ceil( cl.time * 10 );
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lerpfrac = ( cl.time * 10 ) - flight;
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backlerp = 1.0f - lerpfrac;
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for( i = 0, ls = cl.lightstyles; i < MAX_LIGHTSTYLES; i++, ls++ )
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{
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if( r_fullbright->integer || !cl.worldmodel->lightdata )
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{
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RI.lightstylevalue[i] = 256 * 256;
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continue;
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}
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if( !ls->length )
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{
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// was 256, changed to 264 for consistency
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RI.lightstylevalue[i] = 256 * r_lighting_modulate->value;
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continue;
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}
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else if( ls->length == 1 )
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{
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// single length style so don't bother interpolating
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RI.lightstylevalue[i] = ls->map[0] * 22 * r_lighting_modulate->value;
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continue;
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}
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else if( !ls->interp || !cl_lightstyle_lerping->integer )
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{
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RI.lightstylevalue[i] = ls->map[flight%ls->length] * 22 * r_lighting_modulate->value;
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continue;
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}
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// interpolate animating light
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// frame just gone
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k = ls->map[flight % ls->length];
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l = (float)( k * 22 ) * backlerp;
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// upcoming frame
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k = ls->map[clight % ls->length];
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l += (float)( k * 22 ) * lerpfrac;
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RI.lightstylevalue[i] = (int)l * r_lighting_modulate->value;
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}
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}
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/*
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=============
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R_MarkLights
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=============
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*/
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void R_MarkLights( dlight_t *light, int bit, mnode_t *node )
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{
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float dist;
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msurface_t *surf;
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int i;
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if( node->contents < 0 )
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return;
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dist = PlaneDiff( light->origin, node->plane );
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if( dist > light->radius )
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{
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R_MarkLights( light, bit, node->children[0] );
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return;
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}
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if( dist < -light->radius )
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{
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R_MarkLights( light, bit, node->children[1] );
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return;
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}
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// mark the polygons
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surf = cl.worldmodel->surfaces + node->firstsurface;
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for( i = 0; i < node->numsurfaces; i++, surf++ )
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{
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if( surf->dlightframe != tr.dlightframecount )
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{
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surf->dlightbits = 0;
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surf->dlightframe = tr.dlightframecount;
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}
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surf->dlightbits |= bit;
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}
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R_MarkLights( light, bit, node->children[0] );
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R_MarkLights( light, bit, node->children[1] );
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}
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/*
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=============
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R_PushDlights
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=============
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*/
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void R_PushDlights( void )
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{
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dlight_t *l;
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int i;
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tr.dlightframecount = tr.framecount + 1; // because the count hasn't
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// advanced yet for this frame
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l = cl_dlights;
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for( i = 0; i < MAX_DLIGHTS; i++, l++ )
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{
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if( l->die < cl.time || !l->radius )
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continue;
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R_MarkLights( l, 1<<i, cl.worldmodel->nodes );
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}
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}
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void R_LightForPoint( const vec3_t point, vec3_t ambientLight )
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{
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} |