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xash3d-fwgs/engine/client/gl_rsurf.c

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/*
gl_rsurf.c - surface-related refresh code
Copyright (C) 2010 Uncle Mike
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include "common.h"
#include "client.h"
#include "gl_local.h"
#include "mod_local.h"
#include "mathlib.h"
typedef struct
{
int allocated[BLOCK_SIZE_MAX];
int current_lightmap_texture;
msurface_t *dynamic_surfaces;
msurface_t *lightmap_surfaces[MAX_LIGHTMAPS];
byte lightmap_buffer[BLOCK_SIZE_MAX*BLOCK_SIZE_MAX*4];
} gllightmapstate_t;
static int nColinElim; // stats
static vec2_t world_orthocenter;
static vec2_t world_orthohalf;
static uint r_blocklights[BLOCK_SIZE_MAX*BLOCK_SIZE_MAX*3];
static mextrasurf_t *fullbright_surfaces[MAX_TEXTURES];
static mextrasurf_t *detail_surfaces[MAX_TEXTURES];
static int rtable[MOD_FRAMES][MOD_FRAMES];
static qboolean draw_alpha_surfaces = false;
static qboolean draw_fullbrights = false;
static qboolean draw_details = false;
static msurface_t *skychain = NULL;
static gllightmapstate_t gl_lms;
static void LM_UploadBlock( qboolean dynamic );
byte *Mod_GetCurrentVis( void )
{
if( clgame.drawFuncs.Mod_GetCurrentVis && tr.fCustomRendering )
return clgame.drawFuncs.Mod_GetCurrentVis();
return RI.visbytes;
}
void Mod_SetOrthoBounds( float *mins, float *maxs )
{
if( clgame.drawFuncs.GL_OrthoBounds )
{
clgame.drawFuncs.GL_OrthoBounds( mins, maxs );
}
Vector2Average( maxs, mins, world_orthocenter );
Vector2Subtract( maxs, world_orthocenter, world_orthohalf );
}
static void BoundPoly( int numverts, float *verts, vec3_t mins, vec3_t maxs )
{
int i, j;
float *v;
ClearBounds( mins, maxs );
for( i = 0, v = verts; i < numverts; i++ )
{
for( j = 0; j < 3; j++, v++ )
{
if( *v < mins[j] ) mins[j] = *v;
if( *v > maxs[j] ) maxs[j] = *v;
}
}
}
static void SubdividePolygon_r( msurface_t *warpface, int numverts, float *verts )
{
vec3_t front[SUBDIVIDE_SIZE], back[SUBDIVIDE_SIZE];
mextrasurf_t *warpinfo = warpface->info;
float dist[SUBDIVIDE_SIZE];
float m, frac, s, t, *v;
int i, j, k, f, b;
float sample_size;
vec3_t mins, maxs;
glpoly_t *poly;
if( numverts > ( SUBDIVIDE_SIZE - 4 ))
Host_Error( "Mod_SubdividePolygon: too many vertexes on face ( %i )\n", numverts );
sample_size = Mod_SampleSizeForFace( warpface );
BoundPoly( numverts, verts, mins, maxs );
for( i = 0; i < 3; i++ )
{
m = ( mins[i] + maxs[i] ) * 0.5f;
m = SUBDIVIDE_SIZE * floor( m / SUBDIVIDE_SIZE + 0.5f );
if( maxs[i] - m < 8 ) continue;
if( m - mins[i] < 8 ) continue;
// cut it
v = verts + i;
for( j = 0; j < numverts; j++, v += 3 )
dist[j] = *v - m;
// wrap cases
dist[j] = dist[0];
v -= i;
VectorCopy( verts, v );
f = b = 0;
v = verts;
for( j = 0; j < numverts; j++, v += 3 )
{
if( dist[j] >= 0 )
{
VectorCopy( v, front[f] );
f++;
}
if( dist[j] <= 0 )
{
VectorCopy (v, back[b]);
b++;
}
if( dist[j] == 0 || dist[j+1] == 0 )
continue;
if(( dist[j] > 0 ) != ( dist[j+1] > 0 ))
{
// clip point
frac = dist[j] / ( dist[j] - dist[j+1] );
for( k = 0; k < 3; k++ )
front[f][k] = back[b][k] = v[k] + frac * (v[3+k] - v[k]);
f++;
b++;
}
}
SubdividePolygon_r( warpface, f, front[0] );
SubdividePolygon_r( warpface, b, back[0] );
return;
}
if( numverts != 4 )
ClearBits( warpface->flags, SURF_DRAWTURB_QUADS );
// add a point in the center to help keep warp valid
poly = Mem_Calloc( loadmodel->mempool, sizeof( glpoly_t ) + (numverts - 4) * VERTEXSIZE * sizeof( float ));
poly->next = warpface->polys;
poly->flags = warpface->flags;
warpface->polys = poly;
poly->numverts = numverts;
for( i = 0; i < numverts; i++, verts += 3 )
{
VectorCopy( verts, poly->verts[i] );
if( FBitSet( warpface->flags, SURF_DRAWTURB ))
{
s = DotProduct( verts, warpface->texinfo->vecs[0] );
t = DotProduct( verts, warpface->texinfo->vecs[1] );
}
else
{
s = DotProduct( verts, warpface->texinfo->vecs[0] ) + warpface->texinfo->vecs[0][3];
t = DotProduct( verts, warpface->texinfo->vecs[1] ) + warpface->texinfo->vecs[1][3];
s /= warpface->texinfo->texture->width;
t /= warpface->texinfo->texture->height;
}
poly->verts[i][3] = s;
poly->verts[i][4] = t;
// for speed reasons
if( !FBitSet( warpface->flags, SURF_DRAWTURB ))
{
// lightmap texture coordinates
s = DotProduct( verts, warpinfo->lmvecs[0] ) + warpinfo->lmvecs[0][3];
s -= warpinfo->lightmapmins[0];
s += warpface->light_s * sample_size;
s += sample_size * 0.5;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( verts, warpinfo->lmvecs[1] ) + warpinfo->lmvecs[1][3];
t -= warpinfo->lightmapmins[1];
t += warpface->light_t * sample_size;
t += sample_size * 0.5;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->height;
poly->verts[i][5] = s;
poly->verts[i][6] = t;
}
}
}
void GL_SetupFogColorForSurfaces( void )
{
vec3_t fogColor;
float factor, div;
if( !pglIsEnabled( GL_FOG ))
return;
if( RI.currententity && RI.currententity->curstate.rendermode == kRenderTransTexture )
{
pglFogfv( GL_FOG_COLOR, RI.fogColor );
return;
}
div = (r_detailtextures->value) ? 2.0f : 1.0f;
factor = (r_detailtextures->value) ? 3.0f : 2.0f;
fogColor[0] = pow( RI.fogColor[0] / div, ( 1.0f / factor ));
fogColor[1] = pow( RI.fogColor[1] / div, ( 1.0f / factor ));
fogColor[2] = pow( RI.fogColor[2] / div, ( 1.0f / factor ));
pglFogfv( GL_FOG_COLOR, fogColor );
}
void GL_ResetFogColor( void )
{
// restore fog here
if( pglIsEnabled( GL_FOG ))
pglFogfv( GL_FOG_COLOR, RI.fogColor );
}
/*
================
GL_SubdivideSurface
Breaks a polygon up along axial 64 unit
boundaries so that turbulent and sky warps
can be done reasonably.
================
*/
void GL_SubdivideSurface( msurface_t *fa )
{
vec3_t verts[SUBDIVIDE_SIZE];
int numverts;
int i, lindex;
float *vec;
// convert edges back to a normal polygon
numverts = 0;
for( i = 0; i < fa->numedges; i++ )
{
lindex = loadmodel->surfedges[fa->firstedge + i];
if( lindex > 0 ) vec = loadmodel->vertexes[loadmodel->edges[lindex].v[0]].position;
else vec = loadmodel->vertexes[loadmodel->edges[-lindex].v[1]].position;
VectorCopy( vec, verts[numverts] );
numverts++;
}
SetBits( fa->flags, SURF_DRAWTURB_QUADS ); // predict state
// do subdivide
SubdividePolygon_r( fa, numverts, verts[0] );
}
/*
================
GL_BuildPolygonFromSurface
================
*/
void GL_BuildPolygonFromSurface( model_t *mod, msurface_t *fa )
{
int i, lindex, lnumverts;
medge_t *pedges, *r_pedge;
mextrasurf_t *info = fa->info;
float sample_size;
int vertpage;
texture_t *tex;
gltexture_t *glt;
float *vec;
float s, t;
glpoly_t *poly;
if( !mod || !fa->texinfo || !fa->texinfo->texture )
return; // bad polygon ?
if( FBitSet( fa->flags, SURF_CONVEYOR ) && fa->texinfo->texture->gl_texturenum != 0 )
{
glt = R_GetTexture( fa->texinfo->texture->gl_texturenum );
tex = fa->texinfo->texture;
Assert( glt != NULL && tex != NULL );
// update conveyor widths for keep properly speed of scrolling
glt->srcWidth = tex->width;
glt->srcHeight = tex->height;
}
sample_size = Mod_SampleSizeForFace( fa );
// reconstruct the polygon
pedges = mod->edges;
lnumverts = fa->numedges;
vertpage = 0;
// detach if already created, reconstruct again
poly = fa->polys;
fa->polys = NULL;
// quake simple models (healthkits etc) need to be reconstructed their polys because LM coords has changed after the map change
poly = Mem_Realloc( mod->mempool, poly, sizeof( glpoly_t ) + ( lnumverts - 4 ) * VERTEXSIZE * sizeof( float ));
poly->next = fa->polys;
poly->flags = fa->flags;
fa->polys = poly;
poly->numverts = lnumverts;
for( i = 0; i < lnumverts; i++ )
{
lindex = mod->surfedges[fa->firstedge + i];
if( lindex > 0 )
{
r_pedge = &pedges[lindex];
vec = mod->vertexes[r_pedge->v[0]].position;
}
else
{
r_pedge = &pedges[-lindex];
vec = mod->vertexes[r_pedge->v[1]].position;
}
s = DotProduct( vec, fa->texinfo->vecs[0] ) + fa->texinfo->vecs[0][3];
s /= fa->texinfo->texture->width;
t = DotProduct( vec, fa->texinfo->vecs[1] ) + fa->texinfo->vecs[1][3];
t /= fa->texinfo->texture->height;
VectorCopy( vec, poly->verts[i] );
poly->verts[i][3] = s;
poly->verts[i][4] = t;
// lightmap texture coordinates
s = DotProduct( vec, info->lmvecs[0] ) + info->lmvecs[0][3];
s -= info->lightmapmins[0];
s += fa->light_s * sample_size;
s += sample_size / 2.0;
s /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->width;
t = DotProduct( vec, info->lmvecs[1] ) + info->lmvecs[1][3];
t -= info->lightmapmins[1];
t += fa->light_t * sample_size;
t += sample_size / 2.0;
t /= BLOCK_SIZE * sample_size; //fa->texinfo->texture->height;
poly->verts[i][5] = s;
poly->verts[i][6] = t;
}
// remove co-linear points - Ed
if( !gl_keeptjunctions->value && !( fa->flags & SURF_UNDERWATER ))
{
for( i = 0; i < lnumverts; i++ )
{
vec3_t v1, v2;
float *prev, *this, *next;
prev = poly->verts[(i + lnumverts - 1) % lnumverts];
next = poly->verts[(i + 1) % lnumverts];
this = poly->verts[i];
VectorSubtract( this, prev, v1 );
VectorNormalize( v1 );
VectorSubtract( next, prev, v2 );
VectorNormalize( v2 );
// skip co-linear points
if(( fabs( v1[0] - v2[0] ) <= 0.001f) && (fabs( v1[1] - v2[1] ) <= 0.001f) && (fabs( v1[2] - v2[2] ) <= 0.001f))
{
int j, k;
for( j = i + 1; j < lnumverts; j++ )
{
for( k = 0; k < VERTEXSIZE; k++ )
poly->verts[j-1][k] = poly->verts[j][k];
}
// retry next vertex next time, which is now current vertex
lnumverts--;
nColinElim++;
i--;
}
}
}
poly->numverts = lnumverts;
}
/*
===============
R_TextureAnimation
Returns the proper texture for a given time and base texture
===============
*/
texture_t *R_TextureAnimation( msurface_t *s )
{
texture_t *base = s->texinfo->texture;
int count, reletive;
if( RI.currententity->curstate.frame )
{
if( base->alternate_anims )
base = base->alternate_anims;
}
if( !base->anim_total )
return base;
if( base->name[0] == '-' )
{
int tx = (int)((s->texturemins[0] + (base->width << 16)) / base->width) % MOD_FRAMES;
int ty = (int)((s->texturemins[1] + (base->height << 16)) / base->height) % MOD_FRAMES;
reletive = rtable[tx][ty] % base->anim_total;
}
else
{
int speed;
// Quake1 textures uses 10 frames per second
if( FBitSet( R_GetTexture( base->gl_texturenum )->flags, TF_QUAKEPAL ))
speed = 10;
else speed = 20;
reletive = (int)(cl.time * speed) % base->anim_total;
}
count = 0;
while( base->anim_min > reletive || base->anim_max <= reletive )
{
base = base->anim_next;
if( !base )
{
MsgDev( D_ERROR, "R_TextureAnimation: broken loop\n" );
return s->texinfo->texture;
}
if( ++count > MOD_FRAMES )
{
MsgDev( D_ERROR, "R_TextureAnimation: infinite loop\n" );
return s->texinfo->texture;
}
}
return base;
}
/*
===============
R_AddDynamicLights
===============
*/
void R_AddDynamicLights( msurface_t *surf )
{
float dist, rad, minlight;
int lnum, s, t, sd, td, smax, tmax;
float sl, tl, sacc, tacc;
vec3_t impact, origin_l;
mextrasurf_t *info = surf->info;
int sample_frac = 1.0;
float sample_size;
mtexinfo_t *tex;
dlight_t *dl;
uint *bl;
// no dlighted surfaces here
if( !R_CountSurfaceDlights( surf )) return;
sample_size = Mod_SampleSizeForFace( surf );
smax = (info->lightextents[0] / sample_size) + 1;
tmax = (info->lightextents[1] / sample_size) + 1;
tex = surf->texinfo;
if( FBitSet( tex->flags, TEX_WORLD_LUXELS ))
{
if( surf->texinfo->faceinfo )
sample_frac = surf->texinfo->faceinfo->texture_step;
else if( FBitSet( surf->texinfo->flags, TEX_EXTRA_LIGHTMAP ))
sample_frac = LM_SAMPLE_EXTRASIZE;
else sample_frac = LM_SAMPLE_SIZE;
}
for( lnum = 0; lnum < MAX_DLIGHTS; lnum++ )
{
if( !FBitSet( surf->dlightbits, BIT( lnum )))
continue; // not lit by this light
dl = &cl_dlights[lnum];
// transform light origin to local bmodel space
if( !tr.modelviewIdentity )
Matrix4x4_VectorITransform( RI.objectMatrix, dl->origin, origin_l );
else VectorCopy( dl->origin, origin_l );
rad = dl->radius;
dist = PlaneDiff( origin_l, surf->plane );
rad -= fabs( dist );
// rad is now the highest intensity on the plane
minlight = dl->minlight;
if( rad < minlight )
continue;
minlight = rad - minlight;
if( surf->plane->type < 3 )
{
VectorCopy( origin_l, impact );
impact[surf->plane->type] -= dist;
}
else VectorMA( origin_l, -dist, surf->plane->normal, impact );
sl = DotProduct( impact, info->lmvecs[0] ) + info->lmvecs[0][3] - info->lightmapmins[0];
tl = DotProduct( impact, info->lmvecs[1] ) + info->lmvecs[1][3] - info->lightmapmins[1];
bl = r_blocklights;
for( t = 0, tacc = 0; t < tmax; t++, tacc += sample_size )
{
td = (tl - tacc) * sample_frac;
if( td < 0 ) td = -td;
for( s = 0, sacc = 0; s < smax; s++, sacc += sample_size, bl += 3 )
{
sd = (sl - sacc) * sample_frac;
if( sd < 0 ) sd = -sd;
if( sd > td ) dist = sd + (td >> 1);
else dist = td + (sd >> 1);
if( dist < minlight )
{
bl[0] += ((int)((rad - dist) * 256) * LightToTexGamma( dl->color.r )) / 256;
bl[1] += ((int)((rad - dist) * 256) * LightToTexGamma( dl->color.g )) / 256;
bl[2] += ((int)((rad - dist) * 256) * LightToTexGamma( dl->color.b )) / 256;
}
}
}
}
}
/*
================
R_SetCacheState
================
*/
void R_SetCacheState( msurface_t *surf )
{
int maps;
for( maps = 0; maps < MAXLIGHTMAPS && surf->styles[maps] != 255; maps++ )
{
surf->cached_light[maps] = tr.lightstylevalue[surf->styles[maps]];
}
}
/*
=============================================================================
LIGHTMAP ALLOCATION
=============================================================================
*/
static void LM_InitBlock( void )
{
memset( gl_lms.allocated, 0, sizeof( gl_lms.allocated ));
}
static int LM_AllocBlock( int w, int h, int *x, int *y )
{
int i, j;
int best, best2;
best = BLOCK_SIZE;
for( i = 0; i < BLOCK_SIZE - w; i++ )
{
best2 = 0;
for( j = 0; j < w; j++ )
{
if( gl_lms.allocated[i+j] >= best )
break;
if( gl_lms.allocated[i+j] > best2 )
best2 = gl_lms.allocated[i+j];
}
if( j == w )
{
// this is a valid spot
*x = i;
*y = best = best2;
}
}
if( best + h > BLOCK_SIZE )
return false;
for( i = 0; i < w; i++ )
gl_lms.allocated[*x + i] = best + h;
return true;
}
static void LM_UploadBlock( qboolean dynamic )
{
int i;
if( dynamic )
{
int height = 0;
for( i = 0; i < BLOCK_SIZE; i++ )
{
if( gl_lms.allocated[i] > height )
height = gl_lms.allocated[i];
}
GL_Bind( XASH_TEXTURE0, tr.dlightTexture );
pglTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, BLOCK_SIZE, height, GL_RGBA, GL_UNSIGNED_BYTE, gl_lms.lightmap_buffer );
}
else
{
rgbdata_t r_lightmap;
char lmName[16];
i = gl_lms.current_lightmap_texture;
// upload static lightmaps only during loading
memset( &r_lightmap, 0, sizeof( r_lightmap ));
Q_snprintf( lmName, sizeof( lmName ), "*lightmap%i", i );
r_lightmap.width = BLOCK_SIZE;
r_lightmap.height = BLOCK_SIZE;
r_lightmap.type = PF_RGBA_32;
r_lightmap.size = r_lightmap.width * r_lightmap.height * 4;
r_lightmap.flags = IMAGE_HAS_COLOR;
r_lightmap.buffer = gl_lms.lightmap_buffer;
tr.lightmapTextures[i] = GL_LoadTextureInternal( lmName, &r_lightmap, TF_FONT|TF_ATLAS_PAGE, false );
if( ++gl_lms.current_lightmap_texture == MAX_LIGHTMAPS )
Host_Error( "AllocBlock: full\n" );
}
}
/*
=================
R_BuildLightmap
Combine and scale multiple lightmaps into the floating
format in r_blocklights
=================
*/
static void R_BuildLightMap( msurface_t *surf, byte *dest, int stride, qboolean dynamic )
{
int smax, tmax;
uint *bl, scale;
int i, map, size, s, t;
int sample_size;
mextrasurf_t *info = surf->info;
color24 *lm;
sample_size = Mod_SampleSizeForFace( surf );
smax = ( info->lightextents[0] / sample_size ) + 1;
tmax = ( info->lightextents[1] / sample_size ) + 1;
size = smax * tmax;
lm = surf->samples;
memset( r_blocklights, 0, sizeof( uint ) * size * 3 );
// add all the lightmaps
for( map = 0; map < MAXLIGHTMAPS && surf->styles[map] != 255 && lm; map++ )
{
scale = tr.lightstylevalue[surf->styles[map]];
for( i = 0, bl = r_blocklights; i < size; i++, bl += 3, lm++ )
{
bl[0] += LightToTexGamma( lm->r ) * scale;
bl[1] += LightToTexGamma( lm->g ) * scale;
bl[2] += LightToTexGamma( lm->b ) * scale;
}
}
// add all the dynamic lights
if( surf->dlightframe == tr.framecount && dynamic )
R_AddDynamicLights( surf );
// Put into texture format
stride -= (smax << 2);
bl = r_blocklights;
for( t = 0; t < tmax; t++, dest += stride )
{
for( s = 0; s < smax; s++ )
{
dest[0] = min((bl[0] >> 7), 255 );
dest[1] = min((bl[1] >> 7), 255 );
dest[2] = min((bl[2] >> 7), 255 );
dest[3] = 255;
bl += 3;
dest += 4;
}
}
}
/*
================
DrawGLPoly
================
*/
void DrawGLPoly( glpoly_t *p, float xScale, float yScale )
{
float *v;
float sOffset, sy;
float tOffset, cy;
cl_entity_t *e = RI.currententity;
int i, hasScale = false;
if( !p ) return;
if( FBitSet( p->flags, SURF_DRAWTILED ))
GL_ResetFogColor();
if( p->flags & SURF_CONVEYOR )
{
gltexture_t *texture;
float flConveyorSpeed;
float flRate, flAngle;
flConveyorSpeed = (e->curstate.rendercolor.g<<8|e->curstate.rendercolor.b) / 16.0f;
if( e->curstate.rendercolor.r ) flConveyorSpeed = -flConveyorSpeed;
texture = R_GetTexture( glState.currentTextures[glState.activeTMU] );
flRate = abs( flConveyorSpeed ) / (float)texture->srcWidth;
flAngle = ( flConveyorSpeed >= 0 ) ? 180 : 0;
SinCos( flAngle * ( M_PI / 180.0f ), &sy, &cy );
sOffset = cl.time * cy * flRate;
tOffset = cl.time * sy * flRate;
// make sure that we are positive
if( sOffset < 0.0f ) sOffset += 1.0f + -(int)sOffset;
if( tOffset < 0.0f ) tOffset += 1.0f + -(int)tOffset;
// make sure that we are in a [0,1] range
sOffset = sOffset - (int)sOffset;
tOffset = tOffset - (int)tOffset;
}
else
{
sOffset = tOffset = 0.0f;
}
if( xScale != 0.0f && yScale != 0.0f )
hasScale = true;
pglBegin( GL_POLYGON );
for( i = 0, v = p->verts[0]; i < p->numverts; i++, v += VERTEXSIZE )
{
if( hasScale )
pglTexCoord2f(( v[3] + sOffset ) * xScale, ( v[4] + tOffset ) * yScale );
else pglTexCoord2f( v[3] + sOffset, v[4] + tOffset );
pglVertex3fv( v );
}
pglEnd();
if( FBitSet( p->flags, SURF_DRAWTILED ))
GL_SetupFogColorForSurfaces();
}
/*
================
DrawGLPolyChain
Render lightmaps
================
*/
void DrawGLPolyChain( glpoly_t *p, float soffset, float toffset )
{
qboolean dynamic = true;
if( soffset == 0.0f && toffset == 0.0f )
dynamic = false;
for( ; p != NULL; p = p->chain )
{
float *v;
int i;
pglBegin( GL_POLYGON );
v = p->verts[0];
for( i = 0; i < p->numverts; i++, v += VERTEXSIZE )
{
if( !dynamic ) pglTexCoord2f( v[5], v[6] );
else pglTexCoord2f( v[5] - soffset, v[6] - toffset );
pglVertex3fv( v );
}
pglEnd ();
}
}
/*
================
R_BlendLightmaps
================
*/
void R_BlendLightmaps( void )
{
msurface_t *surf, *newsurf = NULL;
int i;
if( r_fullbright->value || !cl.worldmodel->lightdata )
return;
if( RI.currententity )
{
if( RI.currententity->curstate.effects & EF_FULLBRIGHT )
return; // disabled by user
// check for rendermode
switch( RI.currententity->curstate.rendermode )
{
case kRenderTransTexture:
case kRenderTransColor:
case kRenderTransAdd:
case kRenderGlow:
return; // no lightmaps
}
}
GL_SetupFogColorForSurfaces ();
if( !r_lightmap->value )
pglEnable( GL_BLEND );
else pglDisable( GL_BLEND );
// lightmapped solid surfaces
pglDepthMask( GL_FALSE );
pglDepthFunc( GL_EQUAL );
pglDisable( GL_ALPHA_TEST );
pglBlendFunc( GL_ZERO, GL_SRC_COLOR );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
// render static lightmaps first
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
if( gl_lms.lightmap_surfaces[i] )
{
GL_Bind( XASH_TEXTURE0, tr.lightmapTextures[i] );
for( surf = gl_lms.lightmap_surfaces[i]; surf != NULL; surf = surf->info->lightmapchain )
{
if( surf->polys ) DrawGLPolyChain( surf->polys, 0.0f, 0.0f );
}
}
}
// render dynamic lightmaps
if( r_dynamic->value )
{
LM_InitBlock();
GL_Bind( XASH_TEXTURE0, tr.dlightTexture );
newsurf = gl_lms.dynamic_surfaces;
for( surf = gl_lms.dynamic_surfaces; surf != NULL; surf = surf->info->lightmapchain )
{
int smax, tmax;
int sample_size;
mextrasurf_t *info = surf->info;
byte *base;
sample_size = Mod_SampleSizeForFace( surf );
smax = ( info->lightextents[0] / sample_size ) + 1;
tmax = ( info->lightextents[1] / sample_size ) + 1;
if( LM_AllocBlock( smax, tmax, &surf->info->dlight_s, &surf->info->dlight_t ))
{
base = gl_lms.lightmap_buffer;
base += ( surf->info->dlight_t * BLOCK_SIZE + surf->info->dlight_s ) * 4;
R_BuildLightMap( surf, base, BLOCK_SIZE * 4, true );
}
else
{
msurface_t *drawsurf;
// upload what we have so far
LM_UploadBlock( true );
// draw all surfaces that use this lightmap
for( drawsurf = newsurf; drawsurf != surf; drawsurf = drawsurf->info->lightmapchain )
{
if( drawsurf->polys )
{
DrawGLPolyChain( drawsurf->polys,
( drawsurf->light_s - drawsurf->info->dlight_s ) * ( 1.0f / (float)BLOCK_SIZE ),
( drawsurf->light_t - drawsurf->info->dlight_t ) * ( 1.0f / (float)BLOCK_SIZE ));
}
}
newsurf = drawsurf;
// clear the block
LM_InitBlock();
// try uploading the block now
if( !LM_AllocBlock( smax, tmax, &surf->info->dlight_s, &surf->info->dlight_t ))
Host_Error( "AllocBlock: full\n" );
base = gl_lms.lightmap_buffer;
base += ( surf->info->dlight_t * BLOCK_SIZE + surf->info->dlight_s ) * 4;
R_BuildLightMap( surf, base, BLOCK_SIZE * 4, true );
}
}
// draw remainder of dynamic lightmaps that haven't been uploaded yet
if( newsurf ) LM_UploadBlock( true );
for( surf = newsurf; surf != NULL; surf = surf->info->lightmapchain )
{
if( surf->polys )
{
DrawGLPolyChain( surf->polys,
( surf->light_s - surf->info->dlight_s ) * ( 1.0f / (float)BLOCK_SIZE ),
( surf->light_t - surf->info->dlight_t ) * ( 1.0f / (float)BLOCK_SIZE ));
}
}
}
pglDisable( GL_BLEND );
pglDepthMask( GL_TRUE );
pglDepthFunc( GL_LEQUAL );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
// restore fog here
GL_ResetFogColor();
}
/*
================
R_RenderFullbrights
================
*/
void R_RenderFullbrights( void )
{
mextrasurf_t *es, *p;
int i;
if( !draw_fullbrights )
return;
R_AllowFog( false );
pglEnable( GL_BLEND );
pglDepthMask( GL_FALSE );
pglDisable( GL_ALPHA_TEST );
pglBlendFunc( GL_ONE, GL_ONE );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
for( i = 1; i < MAX_TEXTURES; i++ )
{
es = fullbright_surfaces[i];
if( !es ) continue;
GL_Bind( XASH_TEXTURE0, i );
for( p = es; p; p = p->lumachain )
DrawGLPoly( p->surf->polys, 0.0f, 0.0f );
fullbright_surfaces[i] = NULL;
es->lumachain = NULL;
}
pglDisable( GL_BLEND );
pglDepthMask( GL_TRUE );
pglDisable( GL_ALPHA_TEST );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
draw_fullbrights = false;
R_AllowFog( true );
}
/*
================
R_RenderDetails
================
*/
void R_RenderDetails( void )
{
gltexture_t *glt;
mextrasurf_t *es, *p;
msurface_t *fa;
int i;
if( !draw_details )
return;
GL_SetupFogColorForSurfaces();
pglEnable( GL_BLEND );
pglBlendFunc( GL_DST_COLOR, GL_SRC_COLOR );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL );
pglDepthFunc( GL_EQUAL );
for( i = 1; i < MAX_TEXTURES; i++ )
{
es = detail_surfaces[i];
if( !es ) continue;
GL_Bind( XASH_TEXTURE0, i );
for( p = es; p; p = p->detailchain )
{
fa = p->surf;
glt = R_GetTexture( fa->texinfo->texture->gl_texturenum ); // get texture scale
DrawGLPoly( fa->polys, glt->xscale, glt->yscale );
}
detail_surfaces[i] = NULL;
es->detailchain = NULL;
}
pglDisable( GL_BLEND );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
pglDepthFunc( GL_LEQUAL );
draw_details = false;
// restore fog here
GL_ResetFogColor();
}
/*
================
R_RenderBrushPoly
================
*/
void R_RenderBrushPoly( msurface_t *fa, int cull_type )
{
qboolean is_dynamic = false;
int maps;
texture_t *t;
r_stats.c_world_polys++;
if( fa->flags & SURF_DRAWSKY )
return; // already handled
t = R_TextureAnimation( fa );
GL_Bind( XASH_TEXTURE0, t->gl_texturenum );
if( FBitSet( fa->flags, SURF_DRAWTURB ))
{
// warp texture, no lightmaps
EmitWaterPolys( fa, (cull_type == CULL_BACKSIDE));
return;
}
if( t->fb_texturenum )
{
fa->info->lumachain = fullbright_surfaces[t->fb_texturenum];
fullbright_surfaces[t->fb_texturenum] = fa->info;
draw_fullbrights = true;
}
if( r_detailtextures->value )
{
if( pglIsEnabled( GL_FOG ))
{
// don't apply detail textures for windows in the fog
if( RI.currententity->curstate.rendermode != kRenderTransTexture )
{
if( t->dt_texturenum )
{
fa->info->detailchain = detail_surfaces[t->dt_texturenum];
detail_surfaces[t->dt_texturenum] = fa->info;
}
else
{
// draw stub detail texture for underwater surfaces
fa->info->detailchain = detail_surfaces[tr.grayTexture];
detail_surfaces[tr.grayTexture] = fa->info;
}
draw_details = true;
}
}
else if( t->dt_texturenum )
{
fa->info->detailchain = detail_surfaces[t->dt_texturenum];
detail_surfaces[t->dt_texturenum] = fa->info;
draw_details = true;
}
}
DrawGLPoly( fa->polys, 0.0f, 0.0f );
if( RI.currententity->curstate.rendermode == kRenderNormal )
{
// batch decals to draw later
if( tr.num_draw_decals < MAX_DECAL_SURFS && fa->pdecals )
tr.draw_decals[tr.num_draw_decals++] = fa;
}
else
{
// if rendermode != kRenderNormal draw decals sequentially
DrawSurfaceDecals( fa, true, (cull_type == CULL_BACKSIDE));
}
if( fa->flags & SURF_DRAWTILED )
return; // no lightmaps anyway
// check for lightmap modification
for( maps = 0; maps < MAXLIGHTMAPS && fa->styles[maps] != 255; maps++ )
{
if( tr.lightstylevalue[fa->styles[maps]] != fa->cached_light[maps] )
goto dynamic;
}
// dynamic this frame or dynamic previously
if(( fa->dlightframe == tr.framecount ))
{
dynamic:
// NOTE: at this point we have only valid textures
if( r_dynamic->value ) is_dynamic = true;
}
if( is_dynamic )
{
if(( fa->styles[maps] >= 32 || fa->styles[maps] == 0 || fa->styles[maps] == 20 ) && ( fa->dlightframe != tr.framecount ))
{
byte temp[132*132*4];
mextrasurf_t *info = fa->info;
int sample_size;
int smax, tmax;
sample_size = Mod_SampleSizeForFace( fa );
smax = ( info->lightextents[0] / sample_size ) + 1;
tmax = ( info->lightextents[1] / sample_size ) + 1;
R_BuildLightMap( fa, temp, smax * 4, true );
R_SetCacheState( fa );
GL_Bind( XASH_TEXTURE0, tr.lightmapTextures[fa->lightmaptexturenum] );
pglTexSubImage2D( GL_TEXTURE_2D, 0, fa->light_s, fa->light_t, smax, tmax,
GL_RGBA, GL_UNSIGNED_BYTE, temp );
fa->info->lightmapchain = gl_lms.lightmap_surfaces[fa->lightmaptexturenum];
gl_lms.lightmap_surfaces[fa->lightmaptexturenum] = fa;
}
else
{
fa->info->lightmapchain = gl_lms.dynamic_surfaces;
gl_lms.dynamic_surfaces = fa;
}
}
else
{
fa->info->lightmapchain = gl_lms.lightmap_surfaces[fa->lightmaptexturenum];
gl_lms.lightmap_surfaces[fa->lightmaptexturenum] = fa;
}
}
/*
================
R_DrawTextureChains
================
*/
void R_DrawTextureChains( void )
{
int i;
msurface_t *s;
texture_t *t;
// make sure what color is reset
pglColor4ub( 255, 255, 255, 255 );
R_LoadIdentity(); // set identity matrix
GL_SetupFogColorForSurfaces();
// restore worldmodel
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
if( FBitSet( world.flags, FWORLD_SKYSPHERE ) && !FBitSet( world.flags, FWORLD_CUSTOM_SKYBOX ))
{
pglDisable( GL_TEXTURE_2D );
pglColor3f( 1.0f, 1.0f, 1.0f );
}
// clip skybox surfaces
for( s = skychain; s != NULL; s = s->texturechain )
R_AddSkyBoxSurface( s );
if( FBitSet( world.flags, FWORLD_SKYSPHERE ) && !FBitSet( world.flags, FWORLD_CUSTOM_SKYBOX ))
{
pglEnable( GL_TEXTURE_2D );
if( skychain )
R_DrawClouds();
skychain = NULL;
}
for( i = 0; i < cl.worldmodel->numtextures; i++ )
{
t = cl.worldmodel->textures[i];
if( !t ) continue;
s = t->texturechain;
if( !s || ( i == tr.skytexturenum ))
continue;
if(( s->flags & SURF_DRAWTURB ) && clgame.movevars.wateralpha < 1.0f )
continue; // draw translucent water later
if( FBitSet( host.features, ENGINE_QUAKE_COMPATIBLE ) && FBitSet( s->flags, SURF_TRANSPARENT ))
{
draw_alpha_surfaces = true;
continue; // draw transparent surfaces later
}
for( ; s != NULL; s = s->texturechain )
R_RenderBrushPoly( s, CULL_VISIBLE );
t->texturechain = NULL;
}
}
/*
================
R_DrawAlphaTextureChains
================
*/
void R_DrawAlphaTextureChains( void )
{
int i;
msurface_t *s;
texture_t *t;
if( !draw_alpha_surfaces )
return;
memset( gl_lms.lightmap_surfaces, 0, sizeof( gl_lms.lightmap_surfaces ));
gl_lms.dynamic_surfaces = NULL;
// make sure what color is reset
pglColor4ub( 255, 255, 255, 255 );
R_LoadIdentity(); // set identity matrix
pglDisable( GL_BLEND );
pglEnable( GL_ALPHA_TEST );
pglAlphaFunc( GL_GREATER, 0.25f );
GL_SetupFogColorForSurfaces();
// restore worldmodel
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
RI.currententity->curstate.rendermode = kRenderTransAlpha;
draw_alpha_surfaces = false;
for( i = 0; i < cl.worldmodel->numtextures; i++ )
{
t = cl.worldmodel->textures[i];
if( !t ) continue;
s = t->texturechain;
if( !s || !FBitSet( s->flags, SURF_TRANSPARENT ))
continue;
for( ; s != NULL; s = s->texturechain )
R_RenderBrushPoly( s, CULL_VISIBLE );
t->texturechain = NULL;
}
GL_ResetFogColor();
R_BlendLightmaps();
RI.currententity->curstate.rendermode = kRenderNormal; // restore world rendermode
pglAlphaFunc( GL_GREATER, DEFAULT_ALPHATEST );
}
/*
================
R_DrawWaterSurfaces
================
*/
void R_DrawWaterSurfaces( void )
{
int i;
msurface_t *s;
texture_t *t;
if( !RI.drawWorld || RI.onlyClientDraw )
return;
// non-transparent water is already drawed
if( clgame.movevars.wateralpha >= 1.0f )
return;
// restore worldmodel
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
// go back to the world matrix
R_LoadIdentity();
pglEnable( GL_BLEND );
pglDepthMask( GL_FALSE );
pglDisable( GL_ALPHA_TEST );
pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
pglColor4f( 1.0f, 1.0f, 1.0f, clgame.movevars.wateralpha );
for( i = 0; i < cl.worldmodel->numtextures; i++ )
{
t = cl.worldmodel->textures[i];
if( !t ) continue;
s = t->texturechain;
if( !s ) continue;
if( !FBitSet( s->flags, SURF_DRAWTURB ))
continue;
// set modulate mode explicitly
GL_Bind( XASH_TEXTURE0, t->gl_texturenum );
for( ; s; s = s->texturechain )
EmitWaterPolys( s, false );
t->texturechain = NULL;
}
pglDisable( GL_BLEND );
pglDepthMask( GL_TRUE );
pglDisable( GL_ALPHA_TEST );
pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
pglColor4ub( 255, 255, 255, 255 );
}
/*
=================
R_SurfaceCompare
compare translucent surfaces
=================
*/
static int R_SurfaceCompare( const sortedface_t *a, const sortedface_t *b )
{
msurface_t *surf1, *surf2;
vec3_t org1, org2;
float len1, len2;
surf1 = (msurface_t *)a->surf;
surf2 = (msurface_t *)b->surf;
VectorAdd( RI.currententity->origin, surf1->info->origin, org1 );
VectorAdd( RI.currententity->origin, surf2->info->origin, org2 );
// compare by plane dists
len1 = DotProduct( org1, RI.vforward ) - RI.viewplanedist;
len2 = DotProduct( org2, RI.vforward ) - RI.viewplanedist;
if( len1 > len2 )
return -1;
if( len1 < len2 )
return 1;
return 0;
}
void R_SetRenderMode( cl_entity_t *e )
{
switch( e->curstate.rendermode )
{
case kRenderNormal:
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
break;
case kRenderTransColor:
pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
pglColor4ub( e->curstate.rendercolor.r, e->curstate.rendercolor.g, e->curstate.rendercolor.b, e->curstate.renderamt );
pglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
pglDisable( GL_TEXTURE_2D );
pglEnable( GL_BLEND );
break;
case kRenderTransAdd:
pglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
pglColor4f( tr.blend, tr.blend, tr.blend, 1.0f );
pglBlendFunc( GL_ONE, GL_ONE );
pglDepthMask( GL_FALSE );
pglEnable( GL_BLEND );
break;
case kRenderTransAlpha:
pglEnable( GL_ALPHA_TEST );
pglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
if( FBitSet( host.features, ENGINE_QUAKE_COMPATIBLE ))
{
pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
pglColor4f( 1.0f, 1.0f, 1.0f, tr.blend );
pglEnable( GL_BLEND );
}
else
{
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
pglDisable( GL_BLEND );
}
pglAlphaFunc( GL_GREATER, 0.25f );
break;
default:
pglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
pglColor4f( 1.0f, 1.0f, 1.0f, tr.blend );
pglDepthMask( GL_FALSE );
pglEnable( GL_BLEND );
break;
}
}
/*
=================
R_DrawBrushModel
=================
*/
void R_DrawBrushModel( cl_entity_t *e )
{
int i, k, num_sorted;
vec3_t origin_l, oldorigin;
int old_rendermode;
vec3_t mins, maxs;
int cull_type;
msurface_t *psurf;
model_t *clmodel;
qboolean rotated;
dlight_t *l;
if( !RI.drawWorld ) return;
clmodel = e->model;
if( !VectorIsNull( e->angles ))
{
for( i = 0; i < 3; i++ )
{
mins[i] = e->origin[i] - clmodel->radius;
maxs[i] = e->origin[i] + clmodel->radius;
}
rotated = true;
}
else
{
VectorAdd( e->origin, clmodel->mins, mins );
VectorAdd( e->origin, clmodel->maxs, maxs );
rotated = false;
}
if( R_CullBox( mins, maxs ))
return;
memset( gl_lms.lightmap_surfaces, 0, sizeof( gl_lms.lightmap_surfaces ));
old_rendermode = e->curstate.rendermode;
gl_lms.dynamic_surfaces = NULL;
if( rotated ) R_RotateForEntity( e );
else R_TranslateForEntity( e );
if( FBitSet( host.features, ENGINE_QUAKE_COMPATIBLE ) && FBitSet( clmodel->flags, MODEL_TRANSPARENT ))
e->curstate.rendermode = kRenderTransAlpha;
e->visframe = tr.realframecount; // visible
if( rotated ) Matrix4x4_VectorITransform( RI.objectMatrix, RI.cullorigin, tr.modelorg );
else VectorSubtract( RI.cullorigin, e->origin, tr.modelorg );
// calculate dynamic lighting for bmodel
for( k = 0, l = cl_dlights; k < MAX_DLIGHTS; k++, l++ )
{
if( l->die < cl.time || !l->radius )
continue;
VectorCopy( l->origin, oldorigin ); // save lightorigin
Matrix4x4_VectorITransform( RI.objectMatrix, l->origin, origin_l );
VectorCopy( origin_l, l->origin ); // move light in bmodel space
R_MarkLights( l, 1<<k, clmodel->nodes + clmodel->hulls[0].firstclipnode );
VectorCopy( oldorigin, l->origin ); // restore lightorigin
}
// setup the rendermode
R_SetRenderMode( e );
GL_SetupFogColorForSurfaces ();
if( e->curstate.rendermode == kRenderTransAdd )
R_AllowFog( false );
psurf = &clmodel->surfaces[clmodel->firstmodelsurface];
num_sorted = 0;
for( i = 0; i < clmodel->nummodelsurfaces; i++, psurf++ )
{
if( FBitSet( psurf->flags, SURF_DRAWTURB ) && !FBitSet( host.features, ENGINE_QUAKE_COMPATIBLE ))
{
if( psurf->plane->type != PLANE_Z && !FBitSet( e->curstate.effects, EF_WATERSIDES ))
continue;
if( mins[2] + 1.0 >= psurf->plane->dist )
continue;
}
cull_type = R_CullSurface( psurf, &RI.frustum, RI.frustum.clipFlags );
if( cull_type >= CULL_FRUSTUM )
continue;
if( cull_type == CULL_BACKSIDE )
{
if( !FBitSet( psurf->flags, SURF_DRAWTURB ) && !( psurf->pdecals && e->curstate.rendermode == kRenderTransTexture ))
continue;
}
if( num_sorted < world.max_surfaces )
{
world.draw_surfaces[num_sorted].surf = psurf;
world.draw_surfaces[num_sorted].cull = cull_type;
num_sorted++;
}
}
// sort faces if needs
if( !FBitSet( clmodel->flags, MODEL_LIQUID ) && e->curstate.rendermode == kRenderTransTexture && !gl_nosort->value )
qsort( world.draw_surfaces, num_sorted, sizeof( sortedface_t ), R_SurfaceCompare );
// draw sorted translucent surfaces
for( i = 0; i < num_sorted; i++ )
R_RenderBrushPoly( world.draw_surfaces[i].surf, world.draw_surfaces[i].cull );
if( e->curstate.rendermode == kRenderTransColor )
pglEnable( GL_TEXTURE_2D );
DrawDecalsBatch();
GL_ResetFogColor();
R_BlendLightmaps();
R_RenderFullbrights();
R_RenderDetails();
// restore fog here
if( e->curstate.rendermode == kRenderTransAdd )
R_AllowFog( true );
e->curstate.rendermode = old_rendermode;
pglDisable( GL_ALPHA_TEST );
pglAlphaFunc( GL_GREATER, DEFAULT_ALPHATEST );
pglDisable( GL_BLEND );
pglDepthMask( GL_TRUE );
R_DrawModelHull(); // draw before restore
R_LoadIdentity(); // restore worldmatrix
}
/*
=============================================================
WORLD MODEL
=============================================================
*/
/*
================
R_RecursiveWorldNode
================
*/
void R_RecursiveWorldNode( mnode_t *node, uint clipflags )
{
int i, clipped;
msurface_t *surf, **mark;
mleaf_t *pleaf;
int c, side;
float dot;
if( node->contents == CONTENTS_SOLID )
return; // hit a solid leaf
if( node->visframe != tr.visframecount )
return;
if( clipflags && !r_nocull->value )
{
for( i = 0; i < 6; i++ )
{
const mplane_t *p = &RI.frustum.planes[i];
if( !FBitSet( clipflags, BIT( i )))
continue;
clipped = BoxOnPlaneSide( node->minmaxs, node->minmaxs + 3, p );
if( clipped == 2 ) return;
if( clipped == 1 ) ClearBits( clipflags, BIT( i ));
}
}
// if a leaf node, draw stuff
if( node->contents < 0 )
{
pleaf = (mleaf_t *)node;
mark = pleaf->firstmarksurface;
c = pleaf->nummarksurfaces;
if( c )
{
do
{
(*mark)->visframe = tr.framecount;
mark++;
} while( --c );
}
// deal with model fragments in this leaf
if( pleaf->efrags )
R_StoreEfrags( &pleaf->efrags, tr.realframecount );
r_stats.c_world_leafs++;
return;
}
// node is just a decision point, so go down the apropriate sides
// find which side of the node we are on
dot = PlaneDiff( tr.modelorg, node->plane );
side = (dot >= 0.0f) ? 0 : 1;
// recurse down the children, front side first
R_RecursiveWorldNode( node->children[side], clipflags );
// draw stuff
for( c = node->numsurfaces, surf = cl.worldmodel->surfaces + node->firstsurface; c; c--, surf++ )
{
if( R_CullSurface( surf, &RI.frustum, clipflags ))
continue;
if( surf->flags & SURF_DRAWSKY )
{
// make sky chain to right clip the skybox
surf->texturechain = skychain;
skychain = surf;
}
else
{
surf->texturechain = surf->texinfo->texture->texturechain;
surf->texinfo->texture->texturechain = surf;
}
}
// recurse down the back side
R_RecursiveWorldNode( node->children[!side], clipflags );
}
/*
================
R_CullNodeTopView
cull node by user rectangle (simple scissor)
================
*/
qboolean R_CullNodeTopView( mnode_t *node )
{
vec2_t delta, size;
vec3_t center, half;
// build the node center and half-diagonal
VectorAverage( node->minmaxs, node->minmaxs + 3, center );
VectorSubtract( node->minmaxs + 3, center, half );
// cull against the screen frustum or the appropriate area's frustum.
Vector2Subtract( center, world_orthocenter, delta );
Vector2Add( half, world_orthohalf, size );
return ( fabs( delta[0] ) > size[0] ) || ( fabs( delta[1] ) > size[1] );
}
/*
================
R_DrawTopViewLeaf
================
*/
static void R_DrawTopViewLeaf( mleaf_t *pleaf, uint clipflags )
{
msurface_t **mark, *surf;
int i;
for( i = 0, mark = pleaf->firstmarksurface; i < pleaf->nummarksurfaces; i++, mark++ )
{
surf = *mark;
// don't process the same surface twice
if( surf->visframe == tr.framecount )
continue;
surf->visframe = tr.framecount;
if( R_CullSurface( surf, &RI.frustum, clipflags ))
continue;
if(!( surf->flags & SURF_DRAWSKY ))
{
surf->texturechain = surf->texinfo->texture->texturechain;
surf->texinfo->texture->texturechain = surf;
}
}
// deal with model fragments in this leaf
if( pleaf->efrags )
R_StoreEfrags( &pleaf->efrags, tr.realframecount );
r_stats.c_world_leafs++;
}
/*
================
R_DrawWorldTopView
================
*/
void R_DrawWorldTopView( mnode_t *node, uint clipflags )
{
int i, c, clipped;
msurface_t *surf;
do
{
if( node->contents == CONTENTS_SOLID )
return; // hit a solid leaf
if( node->visframe != tr.visframecount )
return;
if( clipflags && !r_nocull->value )
{
for( i = 0; i < 6; i++ )
{
const mplane_t *p = &RI.frustum.planes[i];
if( !FBitSet( clipflags, BIT( i )))
continue;
clipped = BoxOnPlaneSide( node->minmaxs, node->minmaxs + 3, p );
if( clipped == 2 ) return;
if( clipped == 1 ) ClearBits( clipflags, BIT( i ));
}
}
// cull against the screen frustum or the appropriate area's frustum.
if( R_CullNodeTopView( node ))
return;
// if a leaf node, draw stuff
if( node->contents < 0 )
{
R_DrawTopViewLeaf( (mleaf_t *)node, clipflags );
return;
}
// draw stuff
for( c = node->numsurfaces, surf = cl.worldmodel->surfaces + node->firstsurface; c; c--, surf++ )
{
// don't process the same surface twice
if( surf->visframe == tr.framecount )
continue;
surf->visframe = tr.framecount;
if( R_CullSurface( surf, &RI.frustum, clipflags ))
continue;
if(!( surf->flags & SURF_DRAWSKY ))
{
surf->texturechain = surf->texinfo->texture->texturechain;
surf->texinfo->texture->texturechain = surf;
}
}
// recurse down both children, we don't care the order...
R_DrawWorldTopView( node->children[0], clipflags );
node = node->children[1];
} while( node );
}
/*
=============
R_DrawTriangleOutlines
=============
*/
void R_DrawTriangleOutlines( void )
{
int i, j;
msurface_t *surf;
glpoly_t *p;
float *v;
if( !gl_wireframe->value )
return;
pglDisable( GL_TEXTURE_2D );
pglDisable( GL_DEPTH_TEST );
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
pglPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
// render static surfaces first
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
for( surf = gl_lms.lightmap_surfaces[i]; surf != NULL; surf = surf->info->lightmapchain )
{
p = surf->polys;
for( ; p != NULL; p = p->chain )
{
pglBegin( GL_POLYGON );
v = p->verts[0];
for( j = 0; j < p->numverts; j++, v += VERTEXSIZE )
pglVertex3fv( v );
pglEnd ();
}
}
}
// render surfaces with dynamic lightmaps
for( surf = gl_lms.dynamic_surfaces; surf != NULL; surf = surf->info->lightmapchain )
{
p = surf->polys;
for( ; p != NULL; p = p->chain )
{
pglBegin( GL_POLYGON );
v = p->verts[0];
for( j = 0; j < p->numverts; j++, v += VERTEXSIZE )
pglVertex3fv( v );
pglEnd ();
}
}
pglPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
pglEnable( GL_DEPTH_TEST );
pglEnable( GL_TEXTURE_2D );
}
/*
=============
R_DrawWorld
=============
*/
void R_DrawWorld( void )
{
// paranoia issues: when gl_renderer is "0" we need have something valid for currententity
// to prevent crashing until HeadShield drawing.
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
if( !RI.drawWorld || RI.onlyClientDraw )
return;
VectorCopy( RI.cullorigin, tr.modelorg );
memset( gl_lms.lightmap_surfaces, 0, sizeof( gl_lms.lightmap_surfaces ));
memset( fullbright_surfaces, 0, sizeof( fullbright_surfaces ));
memset( detail_surfaces, 0, sizeof( detail_surfaces ));
gl_lms.dynamic_surfaces = NULL;
pglDisable( GL_ALPHA_TEST );
pglDisable( GL_BLEND );
tr.blend = 1.0f;
R_ClearSkyBox ();
if( RI.drawOrtho )
R_DrawWorldTopView( cl.worldmodel->nodes, RI.frustum.clipFlags );
else R_RecursiveWorldNode( cl.worldmodel->nodes, RI.frustum.clipFlags );
R_DrawTextureChains();
if( !CL_IsDevOverviewMode( ))
{
DrawDecalsBatch();
GL_ResetFogColor();
R_BlendLightmaps();
R_RenderFullbrights();
R_RenderDetails();
if( skychain )
R_DrawSkyBox();
}
tr.num_draw_decals = 0;
skychain = NULL;
R_DrawTriangleOutlines ();
R_DrawWorldHull();
}
/*
===============
R_MarkLeaves
Mark the leaves and nodes that are in the PVS for the current leaf
===============
*/
void R_MarkLeaves( void )
{
qboolean novis = false;
qboolean force = false;
mleaf_t *leaf = NULL;
mnode_t *node;
vec3_t test;
int i;
if( !RI.drawWorld ) return;
if( FBitSet( r_novis->flags, FCVAR_CHANGED ) || tr.fResetVis )
{
// force recalc viewleaf
ClearBits( r_novis->flags, FCVAR_CHANGED );
tr.fResetVis = false;
RI.viewleaf = NULL;
}
VectorCopy( RI.pvsorigin, test );
if( RI.viewleaf != NULL )
{
// merge two leafs that can be a crossed-line contents
if( RI.viewleaf->contents == CONTENTS_EMPTY )
{
VectorSet( test, RI.pvsorigin[0], RI.pvsorigin[1], RI.pvsorigin[2] - 16.0f );
leaf = Mod_PointInLeaf( test, cl.worldmodel->nodes );
}
else
{
VectorSet( test, RI.pvsorigin[0], RI.pvsorigin[1], RI.pvsorigin[2] + 16.0f );
leaf = Mod_PointInLeaf( test, cl.worldmodel->nodes );
}
if(( leaf->contents != CONTENTS_SOLID ) && ( RI.viewleaf != leaf ))
force = true;
}
if( RI.viewleaf == RI.oldviewleaf && RI.viewleaf != NULL && !force )
return;
// development aid to let you run around
// and see exactly where the pvs ends
if( r_lockpvs->value ) return;
RI.oldviewleaf = RI.viewleaf;
tr.visframecount++;
if( r_novis->value || RI.drawOrtho || !RI.viewleaf || !cl.worldmodel->visdata )
novis = true;
Mod_FatPVS( RI.pvsorigin, REFPVS_RADIUS, RI.visbytes, world.visbytes, FBitSet( RI.params, RP_OLDVIEWLEAF ), novis );
if( force && !novis ) Mod_FatPVS( test, REFPVS_RADIUS, RI.visbytes, world.visbytes, true, novis );
for( i = 0; i < cl.worldmodel->numleafs; i++ )
{
if( CHECKVISBIT( RI.visbytes, i ))
{
node = (mnode_t *)&cl.worldmodel->leafs[i+1];
do
{
if( node->visframe == tr.visframecount )
break;
node->visframe = tr.visframecount;
node = node->parent;
} while( node );
}
}
}
/*
========================
GL_CreateSurfaceLightmap
========================
*/
void GL_CreateSurfaceLightmap( msurface_t *surf )
{
int smax, tmax;
int sample_size;
mextrasurf_t *info = surf->info;
byte *base;
if( !loadmodel->lightdata )
return;
if( FBitSet( surf->flags, SURF_DRAWTILED ))
return;
sample_size = Mod_SampleSizeForFace( surf );
smax = ( info->lightextents[0] / sample_size ) + 1;
tmax = ( info->lightextents[1] / sample_size ) + 1;
if( !LM_AllocBlock( smax, tmax, &surf->light_s, &surf->light_t ))
{
LM_UploadBlock( false );
LM_InitBlock();
if( !LM_AllocBlock( smax, tmax, &surf->light_s, &surf->light_t ))
Host_Error( "AllocBlock: full\n" );
}
surf->lightmaptexturenum = gl_lms.current_lightmap_texture;
base = gl_lms.lightmap_buffer;
base += ( surf->light_t * BLOCK_SIZE + surf->light_s ) * 4;
R_SetCacheState( surf );
R_BuildLightMap( surf, base, BLOCK_SIZE * 4, false );
}
/*
==================
GL_RebuildLightmaps
Rebuilds the lightmap texture
when gamma is changed
==================
*/
void GL_RebuildLightmaps( void )
{
int i, j;
model_t *m;
if( !cl.video_prepped )
return; // wait for worldmodel
ClearBits( vid_brightness->flags, FCVAR_CHANGED );
ClearBits( vid_gamma->flags, FCVAR_CHANGED );
// release old lightmaps
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
if( !tr.lightmapTextures[i] ) break;
GL_FreeTexture( tr.lightmapTextures[i] );
}
memset( tr.lightmapTextures, 0, sizeof( tr.lightmapTextures ));
gl_lms.current_lightmap_texture = 0;
// setup all the lightstyles
CL_RunLightStyles();
LM_InitBlock();
for( i = 0; i < cl.nummodels; i++ )
{
if(( m = CL_ModelHandle( i + 1 )) == NULL )
continue;
if( m->name[0] == '*' || m->type != mod_brush )
continue;
loadmodel = m;
for( j = 0; j < m->numsurfaces; j++ )
GL_CreateSurfaceLightmap( m->surfaces + j );
}
LM_UploadBlock( false );
if( clgame.drawFuncs.GL_BuildLightmaps )
{
// build lightmaps on the client-side
clgame.drawFuncs.GL_BuildLightmaps( );
}
}
/*
==================
GL_BuildLightmaps
Builds the lightmap texture
with all the surfaces from all brush models
==================
*/
void GL_BuildLightmaps( void )
{
int i, j;
model_t *m;
// release old lightmaps
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
if( !tr.lightmapTextures[i] ) break;
GL_FreeTexture( tr.lightmapTextures[i] );
}
memset( tr.lightmapTextures, 0, sizeof( tr.lightmapTextures ));
memset( &RI, 0, sizeof( RI ));
// update the lightmap blocksize
if( FBitSet( host.features, ENGINE_LARGE_LIGHTMAPS ))
tr.block_size = BLOCK_SIZE_MAX;
else tr.block_size = BLOCK_SIZE_DEFAULT;
skychain = NULL;
tr.framecount = tr.visframecount = 1; // no dlight cache
gl_lms.current_lightmap_texture = 0;
tr.modelviewIdentity = false;
tr.realframecount = 1;
nColinElim = 0;
// setup the texture for dlights
R_InitDlightTexture();
// setup all the lightstyles
CL_RunLightStyles();
LM_InitBlock();
for( i = 0; i < cl.nummodels; i++ )
{
if(( m = CL_ModelHandle( i + 1 )) == NULL )
continue;
if( m->name[0] == '*' || m->type != mod_brush )
continue;
for( j = 0; j < m->numsurfaces; j++ )
{
// clearing all decal chains
m->surfaces[j].pdecals = NULL;
m->surfaces[j].visframe = 0;
loadmodel = m;
GL_CreateSurfaceLightmap( m->surfaces + j );
if( m->surfaces[j].flags & SURF_DRAWTURB )
continue;
GL_BuildPolygonFromSurface( m, m->surfaces + j );
}
// clearing visframe
for( j = 0; j < m->numleafs; j++ )
m->leafs[j+1].visframe = 0;
for( j = 0; j < m->numnodes; j++ )
m->nodes[j].visframe = 0;
}
LM_UploadBlock( false );
if( clgame.drawFuncs.GL_BuildLightmaps )
{
// build lightmaps on the client-side
clgame.drawFuncs.GL_BuildLightmaps( );
}
// now gamma and brightness are valid
ClearBits( vid_brightness->flags, FCVAR_CHANGED );
ClearBits( vid_gamma->flags, FCVAR_CHANGED );
if( !gl_keeptjunctions->value )
MsgDev( D_INFO, "Eliminate %i vertexes\n", nColinElim );
}
void GL_InitRandomTable( void )
{
int tu, tv;
// make random predictable
COM_SetRandomSeed( 255 );
for( tu = 0; tu < MOD_FRAMES; tu++ )
{
for( tv = 0; tv < MOD_FRAMES; tv++ )
{
rtable[tu][tv] = COM_RandomLong( 0, 0x7FFF );
}
}
COM_SetRandomSeed( 0 );
}