/
gl_surf.c
1893 lines (1570 loc) · 44.5 KB
/
gl_surf.c
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/*
Copyright (C) 1996-1997 Id Software, Inc.
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 2
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// gl_surf.c -- surface-related refresh code
#include "quakedef.h"
#define BLOCK_WIDTH 128
#define BLOCK_HEIGHT 128
// was 18*18, added lit support (*3 for RGB) and loosened surface extents maximum (BLOCK_WIDTH*BLOCK_HEIGHT)
#define BLOCKL_SIZE (BLOCK_WIDTH*BLOCK_HEIGHT*3)
unsigned blocklights[BLOCKL_SIZE];
#define MAX_LIGHTMAPS 1024 // was 512 (orig. 64)
gltexture_t *lightmap_textures[MAX_LIGHTMAPS]; // changed to an array
typedef struct glRect_s
{
byte l,t,w,h;
} glRect_t;
glpoly_t *lightmap_polys[MAX_LIGHTMAPS];
qboolean lightmap_modified[MAX_LIGHTMAPS];
glRect_t lightmap_rectchange[MAX_LIGHTMAPS];
int allocated[MAX_LIGHTMAPS][BLOCK_WIDTH];
int last_lightmap_allocated; //ericw -- optimization: remember the index of the last lightmap Lightmap_AllocBlock stored a surf in
// the lightmap texture data needs to be kept in
// main memory so texsubimage can update properly
byte lightmaps[4*MAX_LIGHTMAPS*BLOCK_WIDTH*BLOCK_HEIGHT]; // (4)lightmap_bytes*MAX_LIGHTMAPS*BLOCK_WIDTH*BLOCK_HEIGHT
int d_overbright = 1;
float d_overbrightscale = OVERBRIGHT_SCALE;
/*
============================================================================================================
ALPHA SORTING
============================================================================================================
*/
gl_alphalist_t gl_alphalist[MAX_ALPHA_ITEMS];
int gl_alphalist_num = 0;
/*
===============
R_SetAlphaSurface
===============
*/
qboolean R_SetAlphaSurface(msurface_t *s, float alpha)
{
if (alpha < 1.0) {
// do nothing
} else if (s->flags & SURF_DRAWALPHA) { // TODO: trans 33/66 values
alpha = 0.5f;
} else if (s->flags & SURF_DRAWTURB) {
alpha = R_GetTurbAlpha(s);
}
s->alpha = alpha;
return (alpha < 1.0);
}
/*
===============
R_GetTurbAlpha
===============
*/
float R_GetTurbAlpha (msurface_t *s)
{
float alpha = 1.0f;
if (!r_lockalpha.value) // override water alpha for certain surface types
{
if (s->flags & SURF_DRAWLAVA)
alpha = CLAMP(0.0, r_lavaalpha.value, 1.0);
else if (s->flags & SURF_DRAWSLIME)
alpha = CLAMP(0.0, r_slimealpha.value, 1.0);
else if (s->flags & SURF_DRAWTELEPORT)
alpha = CLAMP(0.0, r_teleportalpha.value, 1.0);
}
if (s->flags & SURF_DRAWWATER)
{
if (globalwateralpha > 0)
alpha = globalwateralpha;
else
alpha = CLAMP(0.0, r_wateralpha.value, 1.0);
}
return alpha;
}
/*
===============
R_GetAlphaDist
===============
*/
vec_t R_GetAlphaDist (vec3_t origin)
{
vec3_t result;
VectorSubtract (origin, r_origin, result);
// no need to sqrt these as all we're concerned about is relative distances
return DotProduct (result, result);
// return VectorLength (result);
}
/*
===============
R_AddToAlpha
===============
*/
void R_AddToAlpha (int type, vec_t dist, void *data, entity_t *entity, float alpha)
{
if (gl_alphalist_num == MAX_ALPHA_ITEMS)
return;
gl_alphalist[gl_alphalist_num].type = type;
gl_alphalist[gl_alphalist_num].dist = dist;
gl_alphalist[gl_alphalist_num].data = data;
gl_alphalist[gl_alphalist_num].entity = entity;
gl_alphalist[gl_alphalist_num].alpha = alpha;
gl_alphalist_num++;
}
static inline int alphadistcompare (const void *arg1, const void *arg2)
{
// Sort in descending dist order, i.e. back to front
// Sorted in reverse order
const gl_alphalist_t *a1 = (gl_alphalist_t *)arg1;
const gl_alphalist_t *a2 = (gl_alphalist_t *)arg2;
// back to front ordering
// this is more correct as it will order surfs properly if less than 1 unit separated
if (a2->dist > a1->dist)
return 1;
else if (a2->dist < a1->dist)
return -1;
else
return 0;
}
/*
=============
R_DrawAlpha
=============
*/
void R_DrawAlpha (void)
{
int i;
gl_alphalist_t a;
if (gl_alphalist_num == 0)
return;
//
// sort
//
if (gl_alphalist_num == 1)
{
// do nothing, no need to sort
}
else if (gl_alphalist_num == 2)
{
// exchange if necessary
if (gl_alphalist[1].dist > gl_alphalist[0].dist)
{
gl_alphalist_t temp = gl_alphalist[0];
gl_alphalist[0] = gl_alphalist[1];
gl_alphalist[1] = temp;
}
}
else
{
// sort fully
qsort((void *)gl_alphalist, gl_alphalist_num, sizeof(gl_alphalist_t), alphadistcompare);
}
//
// draw
//
for (i=0 ; i<gl_alphalist_num ; i++)
{
if ((i + 1) % 100 == 0)
S_ExtraUpdateTime (); // don't let sound get messed up if going slow
a = gl_alphalist[i];
switch (a.type)
{
case ALPHA_SURFACE:
{
if (a.entity)
{
glPushMatrix ();
glLoadMatrixf (a.entity->matrix); // load entity matrix
R_DrawSequentialPoly ((msurface_t *)a.data, a.alpha, a.entity->frame); // draw entity surfaces
glPopMatrix ();
}
else
{
R_DrawSequentialPoly ((msurface_t *)a.data, a.alpha, 0); // draw world surfaces
}
}
break;
case ALPHA_ALIAS:
R_DrawAliasModel ((entity_t *)a.data);
break;
case ALPHA_SPRITE:
R_DrawSpriteModel ((entity_t *)a.data);
break;
case ALPHA_PARTICLE:
R_DrawParticle ((particle_t *)a.data);
break;
case ALPHA_DLIGHTS:
R_RenderDlight ((dlight_t *)a.data);
break;
default:
break;
}
}
gl_alphalist_num = 0;
}
// ----------------------------------------------------
/*
===============
R_AddDynamicLights
===============
*/
void R_AddDynamicLights (msurface_t *surf)
{
int lnum;
int sd, td;
float dist, rad, minlight;
vec3_t impact, local;
int s, t;
int i;
int smax, tmax;
mtexinfo_t *tex;
// lit support via lordhavoc
float r, g, b, brightness;
unsigned *bl;
float scale;
if (!r_dynamic.value) // EER1
return;
scale = CLAMP(1.0, r_dynamicscale.value, 32.0) * 256.0f;
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
tex = surf->texinfo;
for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++)
{
if ( !(surf->dlightbits[lnum >> 5] & (1U << (lnum & 31))) )
continue; // not lit by this light
rad = cl_dlights[lnum].radius;
dist = DotProduct (cl_dlights[lnum].origin, surf->plane->normal) - surf->plane->dist;
rad -= fabs(dist);
minlight = cl_dlights[lnum].minlight;
if (rad < minlight)
continue;
minlight = rad - minlight;
for (i=0 ; i<3 ; i++)
{
impact[i] = cl_dlights[lnum].origin[i] - surf->plane->normal[i]*dist;
}
local[0] = DotProduct (impact, tex->vecs[0]) + tex->vecs[0][3];
local[1] = DotProduct (impact, tex->vecs[1]) + tex->vecs[1][3];
local[0] -= surf->texturemins[0];
local[1] -= surf->texturemins[1];
// lit support via lordhavoc
bl = blocklights;
r = cl_dlights[lnum].color[0] * scale;//256.0f;
g = cl_dlights[lnum].color[1] * scale;//256.0f;
b = cl_dlights[lnum].color[2] * scale;//256.0f;
for (t = 0 ; t<tmax ; t++)
{
td = local[1] - t*16;
if (td < 0)
td = -td;
for (s=0 ; s<smax ; s++)
{
sd = local[0] - s*16;
if (sd < 0)
sd = -sd;
if (sd > td)
dist = sd + (td>>1);
else
dist = td + (sd>>1);
if (dist < minlight)
// lit support via lordhavoc
{
brightness = rad - dist;
bl[0] += (int) (brightness * r);
bl[1] += (int) (brightness * g);
bl[2] += (int) (brightness * b);
}
bl += 3;
}
}
}
}
/*
===============
R_BuildLightMap
combine and scale multiple lightmaps into the 8.8 format in blocklights
===============
*/
void R_BuildLightMap (msurface_t *surf, byte *dest, int stride)
{
int smax, tmax;
int t;
int i, j, size;
byte *lightmap;
unsigned scale;
int maps;
unsigned *bl;
int shift;
surf->cached_dlight = (surf->dlightframe == r_framecount);
smax = (surf->extents[0]>>4)+1;
tmax = (surf->extents[1]>>4)+1;
size = smax*tmax;
lightmap = surf->samples;
if (size > BLOCKL_SIZE)
Sys_Error ("R_BuildLightMap: too large blocklight size (%d, max = %d)", size, BLOCKL_SIZE);
if (!r_fullbright.value && cl.worldmodel->lightdata)
{
// clear to no light
memset (&blocklights[0], 0, size * 3 * sizeof (unsigned int)); // lit support via lordhavoc
// add all the lightmaps
if (lightmap)
for (maps = 0 ; maps < MAXLIGHTMAPS && surf->styles[maps] != 255 ; maps++)
{
scale = d_lightstyle[surf->styles[maps]];
surf->cached_light[maps] = scale; // 8.8 fraction
// lit support via lordhavoc
bl = blocklights;
for (i=0 ; i<size ; i++)
{
*bl++ += *lightmap++ * scale;
*bl++ += *lightmap++ * scale;
*bl++ += *lightmap++ * scale;
}
}
// add all the dynamic lights
if (surf->dlightframe == r_framecount)
R_AddDynamicLights (surf);
}
else
{
// set to full bright if no light data
memset (&blocklights[0], 255, size * 3 * sizeof (unsigned int)); // lit support via lordhavoc
}
// bound, invert, and shift
stride -= smax * 4;
shift = 7 + d_overbright;
bl = blocklights;
for (i=0 ; i<tmax ; i++, dest += stride)
{
for (j=0 ; j<smax ; j++)
{
t = *bl++ >> shift;if (t > 255) t = 255;dest[0] = t;
t = *bl++ >> shift;if (t > 255) t = 255;dest[1] = t;
t = *bl++ >> shift;if (t > 255) t = 255;dest[2] = t;
dest[3] = 255;
dest += 4;
}
}
}
/*
===============
R_TextureAnimation
returns the proper texture for a given time and base texture
===============
*/
texture_t *R_TextureAnimation (texture_t *base, int frame)
{
int relative;
int count;
if (frame)
if (base->alternate_anims)
base = base->alternate_anims;
if (!base->anim_total)
return base;
relative = (int)(cl.time*10) % base->anim_total;
count = 0;
while (base->anim_min > relative || base->anim_max <= relative)
{
base = base->anim_next;
if (!base)
Host_Error ("R_TextureAnimation: broken cycle");
if (++count > 100)
Host_Error ("R_TextureAnimation: infinite cycle");
}
return base;
}
/*
=============================================================
BRUSH MODELS
=============================================================
*/
/*
================
R_RenderDynamicLightmaps
================
*/
void R_RenderDynamicLightmaps (msurface_t *s)
{
byte *base;
int maps;
glRect_t *rect;
int smax, tmax;
if (s->flags & SURF_DRAWTILED) // not a lightmapped surface
return;
// add to lightmap chain
s->polys->chain = lightmap_polys[s->lightmaptexture];
lightmap_polys[s->lightmaptexture] = s->polys;
// check for lightmap modification
for (maps = 0 ; maps < MAXLIGHTMAPS && s->styles[maps] != 255 ; maps++)
if (d_lightstyle[s->styles[maps]] != s->cached_light[maps])
goto dynamic;
if (s->dlightframe == r_framecount // dynamic this frame
|| s->cached_dlight) // dynamic previously
{
dynamic:
if (!r_fullbright.value) // EER1
{
lightmap_modified[s->lightmaptexture] = true;
rect = &lightmap_rectchange[s->lightmaptexture];
if (s->light_t < rect->t)
{
if (rect->h)
rect->h += rect->t - s->light_t;
rect->t = s->light_t;
}
if (s->light_s < rect->l)
{
if (rect->w)
rect->w += rect->l - s->light_s;
rect->l = s->light_s;
}
smax = (s->extents[0]>>4)+1;
tmax = (s->extents[1]>>4)+1;
if ((rect->w + rect->l) < (s->light_s + smax))
rect->w = (s->light_s-rect->l)+smax;
if ((rect->h + rect->t) < (s->light_t + tmax))
rect->h = (s->light_t-rect->t)+tmax;
base = lightmaps + s->lightmaptexture*lightmap_bytes*BLOCK_WIDTH*BLOCK_HEIGHT;
base += s->light_t * BLOCK_WIDTH * lightmap_bytes + s->light_s * lightmap_bytes;
R_BuildLightMap (s, base, BLOCK_WIDTH*lightmap_bytes);
}
}
}
/*
===============
R_UploadLightmaps
uploads the modified lightmap to opengl if necessary
assumes lightmap texture is already bound
===============
*/
void R_UploadLightmaps (void)
{
int lmap;
glRect_t *rect;
for (lmap = 0; lmap < MAX_LIGHTMAPS; lmap++)
{
if (!lightmap_modified[lmap])
continue;
GL_Bind (lightmap_textures[lmap]);
lightmap_modified[lmap] = false;
rect = &lightmap_rectchange[lmap];
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, rect->t, BLOCK_WIDTH, rect->h, GL_RGBA,
GL_UNSIGNED_BYTE, lightmaps+(lmap* BLOCK_HEIGHT + rect->t) *BLOCK_WIDTH*lightmap_bytes);
rect->l = BLOCK_WIDTH;
rect->t = BLOCK_HEIGHT;
rect->h = 0;
rect->w = 0;
// r_speeds
rs_c_dynamic_lightmaps++;
}
}
/*
================
R_DrawGLPoly34
================
*/
void R_DrawGLPoly34 (glpoly_t *p)
{
float *v;
int i;
glBegin (GL_POLYGON);
v = p->verts[0];
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
{
glTexCoord2f (v[3], v[4]);
glVertex3fv (v);
}
glEnd ();
}
/*
================
R_DrawGLPoly56
================
*/
void R_DrawGLPoly56 (glpoly_t *p)
{
float *v;
int i;
glBegin (GL_POLYGON);
v = p->verts[0];
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
{
glTexCoord2f (v[5], v[6]);
glVertex3fv (v);
}
glEnd ();
}
/*
================
R_DrawSequentialPoly
Systems that have fast state and texture changes can
just do everything as it passes with no need to sort
================
*/
void R_DrawSequentialPoly (msurface_t *s, float alpha, int frame)
{
glpoly_t *p;
texture_t *t;
float *v;
float lfog = 0; // keep compiler happy
int i;
//
// sky poly
//
if (s->flags & SURF_DRAWSKY)
return; // skip it, already handled
p = s->polys;
//
// water poly
//
if (s->flags & SURF_DRAWTURB)
{
if (alpha < 1.0)
{
glDepthMask(GL_FALSE);
glEnable(GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor4f(1, 1, 1, alpha);
}
GL_Bind (s->texinfo->texture->warpimage);
if ( !(s->flags & (SURF_DRAWLAVA | SURF_DRAWSLIME)) )
{
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
}
else
{
R_FogDisableGFog ();
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
R_FogEnableGFog ();
if (s->flags & SURF_DRAWLAVA)
lfog = CLAMP(0.0, r_lavafog.value, 1.0);
else if (s->flags & SURF_DRAWSLIME)
lfog = CLAMP(0.0, r_slimefog.value, 1.0);
if (R_FogGetDensity() > 0 && lfog > 0)
{
float *c = R_FogGetColor();
glEnable (GL_BLEND);
glColor4f (c[0],c[1],c[2], lfog);
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
glColor3f (1, 1, 1);
glDisable (GL_BLEND);
}
}
if (alpha < 1.0)
{
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor3f(1, 1, 1);
}
return;
}
t = R_TextureAnimation (s->texinfo->texture, frame);
//
// missing texture
//
if (s->flags & SURF_NOTEXTURE)
{
if (alpha < 1.0)
{
glDepthMask(GL_FALSE);
glEnable(GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor4f(1, 1, 1, alpha);
}
GL_Bind (t->gltexture);
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
if (alpha < 1.0)
{
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor3f(1, 1, 1);
}
return;
}
//
// lightmapped poly
//
if ( !(s->flags & SURF_DRAWTILED) )
{
if (alpha < 1.0)
{
glDepthMask (GL_FALSE);
glEnable (GL_BLEND);
glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor4f (1, 1, 1, alpha);
}
else
glColor3f (1, 1, 1);
if (s->flags & SURF_DRAWFENCE)
glEnable (GL_ALPHA_TEST); // Flip on alpha test
if (gl_mtexable && gl_texture_env_combine) // case 1: texture and lightmap in one pass, overbright using texture combiners
{
// Binds world to texture env 0
GL_DisableMultitexture (); // selects TEXTURE0
GL_Bind (t->gltexture);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
// Binds lightmap to texture env 1
GL_EnableMultitexture (); // selects TEXTURE1
GL_Bind (lightmap_textures[s->lightmaptexture]);
R_RenderDynamicLightmaps (s);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_PREVIOUS_EXT);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT, d_overbrightscale);
glBegin(GL_POLYGON);
v = p->verts[0];
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
{
qglMultiTexCoord2f (GL_TEXTURE0_ARB, v[3], v[4]);
qglMultiTexCoord2f (GL_TEXTURE1_ARB, v[5], v[6]);
glVertex3fv (v);
}
glEnd ();
rs_c_brush_passes++; // r_speeds
glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT, 1.0f);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
GL_DisableMultitexture (); // selects TEXTURE0
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);//FX
}
else if (alpha < 1.0 || (s->flags & SURF_DRAWFENCE)) // case 2: can't do multipass if brush has alpha, so just draw the texture
{
GL_Bind (t->gltexture);
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
}
else // case 3: texture in one pass, lightmap in second pass using 2x modulation blend func, fog in third pass
{
// first pass -- texture with no fog
R_FogDisableGFog ();
GL_Bind (t->gltexture);
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
R_FogEnableGFog ();
// second pass -- lightmap with black fog, modulate blended
GL_Bind (lightmap_textures[s->lightmaptexture]);
R_RenderDynamicLightmaps (s);
glDepthMask (GL_FALSE); // don't bother writing Z
glEnable (GL_BLEND);
glBlendFunc (GL_DST_COLOR, GL_SRC_COLOR); // 2x modulate
R_FogStartAdditive ();
R_DrawGLPoly56 (p);
rs_c_brush_passes++; // r_speeds
R_FogStopAdditive ();
// third pass -- black geo with normal fog, additive blended
if (R_FogGetDensity() > 0)
{
glBlendFunc(GL_ONE, GL_ONE); //add
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor3f(0,0,0);
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
glColor3f(1,1,1);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable (GL_BLEND);
glDepthMask (GL_TRUE); // back to normal Z buffering
}
if (alpha < 1.0)
{
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor3f(1, 1, 1);
}
if (s->flags & SURF_DRAWFENCE)
glDisable (GL_ALPHA_TEST); // Flip alpha test back off
if (t->fullbright)
{
GL_Bind (t->fullbright);
glDepthMask (GL_FALSE); // don't bother writing Z
glEnable (GL_BLEND);
glBlendFunc (GL_ONE, GL_ONE);
glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor3f (alpha, alpha, alpha);
R_FogStartAdditive ();
R_DrawGLPoly34 (p);
rs_c_brush_passes++; // r_speeds
R_FogStopAdditive ();
glColor3f (1, 1, 1);
glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable (GL_BLEND);
glDepthMask (GL_TRUE); // back to normal Z buffering
}
}
}
/*
=================
R_DrawBrushModel
=================
*/
void R_DrawBrushModel (entity_t *e)
{
int k, i;
msurface_t *psurf;
float dot;
mplane_t *pplane;
model_t *clmodel;
qboolean rotated = false;
float alpha;
qboolean hasalpha = false;
if (R_CullModelForEntity(e))
return;
clmodel = e->model;
alpha = ENTALPHA_DECODE(e->alpha);
VectorSubtract (r_refdef.vieworg, e->origin, modelorg);
if (e->angles[0] || e->angles[1] || e->angles[2])
{
vec3_t temp;
vec3_t forward, right, up;
rotated = true;
VectorCopy (modelorg, temp);
AngleVectors (e->angles, forward, right, up);
modelorg[0] = DotProduct (temp, forward);
modelorg[1] = -DotProduct (temp, right);
modelorg[2] = DotProduct (temp, up);
}
e->rotated = rotated;
// calculate dynamic lighting for bmodel if it's not an instanced model
if (clmodel->firstmodelsurface != 0) // EER1
{
for (k=0 ; k<MAX_DLIGHTS ; k++)
{
if ((cl_dlights[k].die < cl.time) ||
(!cl_dlights[k].radius))
continue;
R_MarkLights (&cl_dlights[k], k, clmodel->nodes + clmodel->hulls[0].firstclipnode);
}
}
glPushMatrix ();
glTranslatef (e->origin[0], e->origin[1], e->origin[2]);
if (rotated)
{
glRotatef (e->angles[1], 0, 0, 1);
glRotatef (e->angles[0], 0, 1, 0);
glRotatef (e->angles[2], 1, 0, 0);
}
//
// set all chains to null
//
R_ClearTextureChains(clmodel, chain_model);
//
// draw it
//
psurf = &clmodel->surfaces[clmodel->firstmodelsurface];
for (i=0 ; i<clmodel->nummodelsurfaces ; i++, psurf++)
{
// find which side of the node we are on
pplane = psurf->plane;
dot = DotProduct (modelorg, pplane->normal) - pplane->dist;
// draw the polygon
if (((psurf->flags & SURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
(!(psurf->flags & SURF_PLANEBACK) && (dot > BACKFACE_EPSILON)))
{
if (psurf->texinfo->texture->warpimage)
psurf->texinfo->texture->update_warp = true; // FIXME: one frame too late!
hasalpha = R_SetAlphaSurface(psurf, alpha);
R_ChainSurface (psurf, chain_model);
rs_c_brush_polys++; // r_speeds
}
}
if (hasalpha)
glGetFloatv (GL_MODELVIEW_MATRIX, e->matrix); // save entity matrix
R_DrawTextureChains (clmodel, e, chain_model);
glPopMatrix ();
}
/*
=============================================================
WORLD MODEL
=============================================================
*/
int recursivecount;
/*
================
R_RecursiveWorldNode
this now only builds a surface chains and leafs
================
*/
void R_RecursiveWorldNode (mnode_t *node)
{
int c, side;
mplane_t *plane;
msurface_t *surf, **mark;
mleaf_t *pleaf;
float dot;
// float alpha = 1.0;
restart:
if (node->contents == CONTENTS_SOLID)
return; // solid
if (node->visframe != r_visframecount)
return;
if (R_CullBox (node->mins, node->maxs))
return;
// 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 = r_framecount;
mark++;
} while (--c);
}
// deal with model fragments in this leaf