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Descent3/model/newstyle.cpp
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/*
* Descent 3
* Copyright (C) 2024 Parallax Software
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
--- HISTORICAL COMMENTS FOLLOW ---
* $Logfile: /DescentIII/Main/model/newstyle.cpp $
* $Revision: 122 $
* $Date: 3/20/00 12:28p $
* $Author: Matt $
*
* Polygon model code
*
* $Log: /DescentIII/Main/model/newstyle.cpp $
*
* 122 3/20/00 12:28p Matt
* Merge of Duane's post-1.3 changes.
* Check for NULL pointer.
*
* 121 7/08/99 5:47p Jason
* changes for new bumpmapping system in 1.1 update patch
*
* 120 6/08/99 1:00p Jason
* changes for bumpmapping
*
* 119 5/18/99 10:31a Jason
* polymodel stuff wasn't getting paged in before drawing
*
* 118 5/14/99 2:03p Jason
* added polymodel errors to catch bugs
*
* 117 5/14/99 12:02a Jason
* more speedups for g3_DrawPoly
*
* 116 5/13/99 8:33p Matt
* Consolidated Mac & Windows code.
*
* 115 5/13/99 5:07p Ardussi
* changes for compiling on the Mac
*
* 114 5/04/99 4:34p Jason
* changes for bumpmapping
*
* 113 4/22/99 8:29p Kevin
* made psrand.h come after stdlib.h
*
* 112 4/21/99 11:05a Kevin
* new ps_rand and ps_srand to replace rand & srand
*
* 111 4/16/99 5:32p Jason
* fixed smooth specularity with objects
*
* 110 4/14/99 1:36a Jeff
* fixed case mismatched #includes
*
* 109 4/09/99 12:06p Jason
* made model setup code faster
*
* 108 3/31/99 12:26p Jason
* fixed some issues related to non wbuffer cards
*
* 107 3/24/99 10:22a Matt
* Fixed null-pointer bug
*
*/
#include "pserror.h"
#include "pstypes.h"
#include "3d.h"
#include "vecmat.h"
#include "grdefs.h"
#include "polymodel.h"
#include "gametexture.h"
#include "byteswap.h"
#include "renderer.h"
#include "lighting.h"
#include "game.h"
#include "render.h"
#include "fireball.h"
#include "lightmap_info.h"
#include "lightmap.h"
#include "lighting.h"
#include "findintersection.h"
#include <stdlib.h>
#include <string.h>
#include "psrand.h"
static float face_depth[MAX_POLYGON_VECS];
static ubyte triangulated_faces[MAX_FACES_PER_ROOM];
static ubyte FacingPass = 0;
static int Multicolor_texture = -1;
static vector Fog_plane;
static float Fog_distance, Fog_eye_distance;
static vector Fog_view_pos, Specular_view_pos, Bump_view_pos;
static matrix Unscaled_bumpmap_matrix;
static int ModelFaceSortFunc(const short *a, const short *b);
static inline void RenderSubmodelFace(poly_model *pm, bsp_info *sm, int facenum);
static inline void RenderSubmodelLightmapFace(poly_model *pm, bsp_info *sm, int facenum);
static inline void RenderSubmodelFaceFogged(poly_model *pm, bsp_info *sm, int facenum);
static inline void RenderSubmodelFaceSpecular(poly_model *pm, bsp_info *sm, int facenum);
/// Draws a glowing cone of light.
static void DrawGlowEffect(vector *pos, float r, float g, float b, vector *norm, float size);
/// Draws a glowing cone of light that represents thrusters
static void DrawThrusterEffect(vector *pos, float r, float g, float b, vector *norm, float size, float length);
static void RenderSubmodelFacesSorted(poly_model *pm, bsp_info *sm);
static void RenderSubmodelFacesUnsorted(poly_model *pm, bsp_info *sm);
/// Rotates all of the points of a submodel, plus supplies color info.
static void RotateModelPoints(poly_model *pm, bsp_info *sm);
static float ComputeDefaultSizeFunc(int handle, float *size_ptr, vector *offset_ptr, bool f_use_all_frames);
int ModelFaceSortFunc(const short *a, const short *b) {
float az, bz;
az = face_depth[*a];
bz = face_depth[*b];
if (az < bz)
return -1;
else if (az > bz)
return 1;
else
return 0;
}
#ifdef _DEBUG
static void model_draw_outline(int nverts, g3Point **pointlist) {
int i;
for (i = 0; i < nverts - 1; i++)
g3_DrawLine(GR_RGB(255, 255, 255), pointlist[i], pointlist[i + 1]);
g3_DrawLine(GR_RGB(255, 255, 255), pointlist[i], pointlist[0]);
}
static void DrawSubmodelFaceOutline(int nv, g3Point **pointlist) {
int i;
g3Point tpnt[64];
g3Point *tpnt_list[64];
ASSERT(nv < 64);
for (i = 0; i < nv; i++) {
tpnt[i] = *pointlist[i];
tpnt_list[i] = &tpnt[i];
}
for (i = 0; i < nv - 1; i++)
g3_DrawLine(GR_RGB(255, 255, 0), tpnt_list[i], tpnt_list[i + 1]);
g3_DrawLine(GR_RGB(255, 255, 0), tpnt_list[i], tpnt_list[0]);
}
#endif
#define CROSS_WIDTH 8.0
int Lightmap_debug_subnum = -1;
int Lightmap_debug_facenum = -1;
int Lightmap_debug_model = -1;
inline void RenderSubmodelFace(poly_model *pm, bsp_info *sm, int facenum) {
g3Point *pointlist[100];
int bm_handle;
int smooth = 0;
polyface *fp = &sm->faces[facenum];
int modelnum = sm - pm->submodel;
texture *texp = NULL;
int t;
int custom = 0;
g3Codes face_cc;
int triface = 0;
face_cc.cc_and = 0xff;
face_cc.cc_or = 0;
triangulated_faces[facenum] = 0;
if (sm->flags & SOF_CUSTOM)
custom = 1;
// Setup texturing
if (fp->texnum != -1)
texp = &GameTextures[pm->textures[fp->texnum]];
if (texp && custom && Polymodel_use_effect && (Polymodel_effect.type & PEF_CUSTOM_TEXTURE))
texp = &GameTextures[Polymodel_effect.custom_texture];
// Set radiosity lightmaps if needed
if (Polymodel_light_type == POLYMODEL_LIGHTING_LIGHTMAP) {
rend_SetOverlayMap(
LightmapInfo[Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].lmi_handle].lm_handle);
}
// Do bump mapping
if ((Polymodel_effect.type & PEF_BUMPMAPPED) && texp && texp->bumpmap != -1 &&
Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
rend_SetOverlayType(OT_NONE);
rend_SetBumpmapReadyState(1, texp->bumpmap);
if ((GameTextures[fp->texnum].flags & TF_SMOOTH_SPECULAR))
smooth = 1;
}
float uchange = 0, vchange = 0;
// Figure out if there is any texture sliding
if (texp && texp->slide_u != 0) {
int int_time = Gametime / texp->slide_u;
float norm_time = Gametime - (int_time * texp->slide_u);
norm_time /= texp->slide_u;
uchange = norm_time;
}
if (texp && texp->slide_v != 0) {
int int_time = Gametime / texp->slide_v;
float norm_time = Gametime - (int_time * texp->slide_v);
norm_time /= texp->slide_v;
vchange = norm_time;
}
ASSERT(fp->nverts < 100);
// Setup the points for this face
for (t = 0; t < fp->nverts; t++) {
g3Point *p = &Robot_points[fp->vertnums[t]];
pointlist[t] = p;
if (texp) {
p->p3_uvl.u = fp->u[t] + uchange;
p->p3_uvl.v = fp->v[t] + vchange;
p->p3_uvl.a = sm->alpha[fp->vertnums[t]];
p->p3_flags |= PF_UV + PF_RGBA + PF_L;
// Assign bump mapping coords
if ((Polymodel_effect.type & PEF_BUMPMAPPED) && texp->bumpmap != -1 &&
Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
p->p3_flags |= PF_UV2;
vector vert = sm->verts[fp->vertnums[t]];
vector vertnorm;
if (smooth)
vertnorm = sm->vertnorms[fp->vertnums[t]];
else
vertnorm = fp->normal;
vector subvec = Bump_view_pos - vert;
vm_NormalizeVectorFast(&subvec);
vector incident_norm = vert - Polymodel_bump_pos;
vm_NormalizeVectorFast(&incident_norm);
float d = incident_norm * vertnorm;
vector upvec = d * vertnorm;
incident_norm -= (2 * upvec);
float dotp = (subvec * incident_norm);
if (dotp < 0)
dotp = 0;
if (dotp > 1)
dotp = 1;
float val = dotp * .5;
p->p3_uvl.u2 = val;
p->p3_uvl.v2 = val;
}
}
if (Polymodel_light_type == POLYMODEL_LIGHTING_LIGHTMAP) {
p->p3_flags |= PF_UV2;
p->p3_uvl.u2 = Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].u2[t];
p->p3_uvl.v2 = Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].v2[t];
}
face_cc.cc_or |= p->p3_codes;
face_cc.cc_and &= p->p3_codes;
}
if (face_cc.cc_or && Polymodel_use_effect &&
(Polymodel_effect.type & (PEF_FOGGED_MODEL | PEF_SPECULAR_MODEL | PEF_SPECULAR_FACES))) {
triface = 1;
triangulated_faces[facenum] = 1;
}
// If there is a texture, set it up
if (texp) {
bm_handle = GetTextureBitmap(texp - GameTextures, 0);
rend_SetTextureType(TT_LINEAR);
if (Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD)
rend_SetLighting(LS_GOURAUD);
// If this is a light texture, make the texture full bright
if (texp->flags & TF_LIGHT) {
rend_SetLighting(LS_FLAT_GOURAUD);
rend_SetFlatColor(GR_RGB(255, 255, 255));
}
// Setup custom color if there is one
if (Polymodel_use_effect && (Polymodel_effect.type & PEF_CUSTOM_COLOR) &&
(texp - GameTextures) == Multicolor_texture) {
int r, g, b;
rend_SetLighting(LS_FLAT_GOURAUD);
r = GR_COLOR_RED(Polymodel_effect.custom_color);
g = GR_COLOR_GREEN(Polymodel_effect.custom_color);
b = GR_COLOR_BLUE(Polymodel_effect.custom_color);
if (Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
if (Polymodel_use_effect && Polymodel_effect.type & PEF_COLOR) {
r = Polymodel_effect.r * (float)r * Polylighting_static_red;
g = Polymodel_effect.g * (float)g * Polylighting_static_green;
b = Polymodel_effect.b * (float)b * Polylighting_static_blue;
} else {
r = (float)r * Polylighting_static_red;
g = (float)g * Polylighting_static_green;
b = (float)b * Polylighting_static_blue;
}
}
rend_SetFlatColor(GR_RGB(r, g, b));
}
if (Polymodel_use_effect && (Polymodel_effect.type & PEF_ALPHA))
rend_SetAlphaValue(texp->alpha * Polymodel_effect.alpha * 255);
else
rend_SetAlphaValue(texp->alpha * 255);
if (texp->flags & TF_SATURATE)
rend_SetAlphaType(AT_SATURATE_CONSTANT_VERTEX);
else {
if ((texp->flags & TF_ALPHA) || (Polymodel_use_effect && (Polymodel_effect.type & PEF_ALPHA)))
rend_SetAlphaType(ATF_CONSTANT + ATF_VERTEX);
else
rend_SetAlphaType(ATF_TEXTURE + ATF_VERTEX);
}
} else {
rend_SetAlphaType(ATF_CONSTANT + ATF_VERTEX);
if (Polymodel_use_effect && (Polymodel_effect.type & PEF_ALPHA))
rend_SetAlphaValue(Polymodel_effect.alpha * 255);
else
rend_SetAlphaValue(255);
rend_SetLighting(LS_NONE);
rend_SetTextureType(TT_FLAT);
int r, g, b;
r = GR_COLOR_RED(fp->color);
g = GR_COLOR_GREEN(fp->color);
b = GR_COLOR_BLUE(fp->color);
if (Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
if (Polymodel_use_effect && Polymodel_effect.type & PEF_COLOR) {
r = Polymodel_effect.r * (float)r * Polylighting_static_red;
g = Polymodel_effect.g * (float)g * Polylighting_static_green;
b = Polymodel_effect.b * (float)b * Polylighting_static_blue;
} else {
r = (float)r * Polylighting_static_red;
g = (float)g * Polylighting_static_green;
b = (float)b * Polylighting_static_blue;
}
}
rend_SetFlatColor(GR_RGB(r, g, b));
bm_handle = 0;
}
if (triface)
g3_SetTriangulationTest(1);
g3_DrawPoly(fp->nverts, pointlist, bm_handle, MAP_TYPE_BITMAP, &face_cc);
if (triface)
g3_SetTriangulationTest(0);
if (texp && (Polymodel_effect.type & PEF_BUMPMAPPED) && texp->bumpmap != -1 &&
Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
rend_SetBumpmapReadyState(0, 0);
}
#ifdef _DEBUG
if (Polymodel_outline_mode)
DrawSubmodelFaceOutline(fp->nverts, pointlist);
/* if (Lightmap_debug_model==(pm-Poly_models) && Polymodel_light_type==POLYMODEL_LIGHTING_LIGHTMAP &&
Lightmap_debug_subnum==modelnum && Lightmap_debug_facenum==facenum)
{
int lmi_handle=Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].lmi_handle;
lightmap_object_face *lfp=&Polylighting_lightmap_object->lightmap_faces[modelnum][facenum];
lightmap_info *lmi_ptr=&LightmapInfo[lmi_handle];
int w=lmi_w (lmi_handle);
int h=lmi_h (lmi_handle);
vector rvec=lfp->rvec*lmi_ptr->xspacing;
vector uvec=lfp->uvec*lmi_ptr->yspacing;
ushort *src_data=(ushort *)lm_data(lmi_ptr->lm_handle);
for (int i=0;i<w*h;i++)
{
int t;
g3Point epoints[20];
vector evec[20];
int y=i/w;
int x=i%w;
evec[0]=lmi_ptr->upper_left-(y*uvec)+(x*rvec);
g3_RotatePoint(&epoints[0],&evec[0]);
pointlist[0] = &epoints[0];
evec[1]=lmi_ptr->upper_left-(y*uvec)+((x+1)*rvec);
g3_RotatePoint(&epoints[1],&evec[1]);
pointlist[1] = &epoints[1];
evec[2]=lmi_ptr->upper_left-((y+1)*uvec)+((x+1)*rvec);
g3_RotatePoint(&epoints[2],&evec[2]);
pointlist[2] = &epoints[2];
evec[3]=lmi_ptr->upper_left-((y+1)*uvec)+(x*rvec);
g3_RotatePoint(&epoints[3],&evec[3]);
pointlist[3] = &epoints[3];
if (!(src_data[y*w+x] & OPAQUE_FLAG))
{
for (t=0;t<4;t++)
g3_DrawLine(GR_RGB(255,0,255),pointlist[t],pointlist[(t+1)%4]);
}
else
{
for (t=0;t<4;t++)
g3_DrawLine(GR_RGB(255,255,255),pointlist[t],pointlist[(t+1)%4]);
}
}
// Draw red cross where upper left is
ubyte c0;
g3Point p0;
p0.p3_flags=0;
c0 = g3_RotatePoint(&p0,&LightmapInfo[lmi_handle].upper_left);
if (! c0)
{
//Draw a little cross at the current vert
g3_ProjectPoint(&p0); //make sure projected
rend_SetFlatColor(GR_RGB(255,0,0));
rend_DrawLine(p0.p3_sx-CROSS_WIDTH,p0.p3_sy,p0.p3_sx,p0.p3_sy-CROSS_WIDTH);
rend_DrawLine(p0.p3_sx,p0.p3_sy-CROSS_WIDTH,p0.p3_sx+CROSS_WIDTH,p0.p3_sy);
rend_DrawLine(p0.p3_sx+CROSS_WIDTH,p0.p3_sy,p0.p3_sx,p0.p3_sy+CROSS_WIDTH);
rend_DrawLine(p0.p3_sx,p0.p3_sy+CROSS_WIDTH,p0.p3_sx-CROSS_WIDTH,p0.p3_sy);
}
}*/
#endif
}
inline void RenderSubmodelLightmapFace(poly_model *pm, bsp_info *sm, int facenum) {
g3Point *pointlist[100];
polyface *fp = &sm->faces[facenum];
int modelnum = sm - pm->submodel;
int t;
int lm_handle = LightmapInfo[Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].lmi_handle].lm_handle;
float xscalar = (float)GameLightmaps[lm_handle].width / (float)GameLightmaps[lm_handle].square_res;
float yscalar = (float)GameLightmaps[lm_handle].height / (float)GameLightmaps[lm_handle].square_res;
ASSERT(fp->nverts < 100);
// Setup the points for this face
for (t = 0; t < fp->nverts; t++) {
g3Point *p = &Robot_points[fp->vertnums[t]];
pointlist[t] = p;
p->p3_uvl.u = Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].u2[t] * xscalar;
p->p3_uvl.v = Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].v2[t] * yscalar;
p->p3_uvl.l = 1.0;
p->p3_flags |= PF_UV2 + PF_RGBA + PF_L;
}
if (triangulated_faces[facenum])
g3_SetTriangulationTest(1);
g3_DrawPoly(fp->nverts, pointlist, lm_handle, MAP_TYPE_LIGHTMAP);
if (triangulated_faces[facenum])
g3_SetTriangulationTest(0);
}
inline void RenderSubmodelFaceFogged(poly_model *pm, bsp_info *sm, int facenum) {
g3Point *pointlist[100];
polyface *fp = &sm->faces[facenum];
int modelnum = sm - pm->submodel;
int t;
for (t = 0; t < fp->nverts; t++) {
g3Point *p = &Robot_points[fp->vertnums[t]];
pointlist[t] = p;
float mag;
if (Polymodel_effect.fog_plane_check == 1) {
mag = vm_DotProduct(&Fog_plane, &sm->verts[fp->vertnums[t]]) + Fog_distance;
} else {
vector *vec = &sm->verts[fp->vertnums[t]];
// Now we must generate the split point. This is simply
// an equation in the form Origin + t*Direction
float dist = (*vec * Polymodel_fog_plane) + Fog_distance;
vector subvec = *vec - Fog_view_pos;
float t = Fog_eye_distance / (Fog_eye_distance - dist);
vector portal_point = Fog_view_pos + (t * subvec);
float eye_distance = -(vm_DotProduct(&Fog_plane, &portal_point));
mag = vm_DotProduct(&Fog_plane, vec) + eye_distance;
}
float scalar = mag / Polymodel_effect.fog_depth;
if (scalar > 1)
scalar = 1;
if (scalar < 0)
scalar = 0;
p->p3_a = scalar;
p->p3_flags |= PF_RGBA;
}
if (triangulated_faces[facenum])
g3_SetTriangulationTest(1);
g3_DrawPoly(fp->nverts, pointlist, 0);
if (triangulated_faces[facenum])
g3_SetTriangulationTest(0);
}
inline void RenderSubmodelFaceSpecular(poly_model *pm, bsp_info *sm, int facenum) {
g3Point *pointlist[100];
polyface *fp = &sm->faces[facenum];
int modelnum = sm - pm->submodel;
int t;
bool smooth = 0;
if ((Polymodel_effect.type & PEF_SPECULAR_FACES) && (GameTextures[fp->texnum].flags & TF_SMOOTH_SPECULAR))
smooth = 1;
for (t = 0; t < fp->nverts; t++) {
g3Point *p = &Robot_points[fp->vertnums[t]];
vector vert = sm->verts[fp->vertnums[t]];
vector vertnorm;
if (smooth)
vertnorm = sm->vertnorms[fp->vertnums[t]];
else
vertnorm = fp->normal;
pointlist[t] = p;
p->p3_flags |= PF_RGBA;
p->p3_a = 0.0;
vector subvec = Specular_view_pos - vert;
vm_NormalizeVectorFast(&subvec);
vector incident_norm = vert - Polymodel_specular_pos;
vm_NormalizeVectorFast(&incident_norm);
float d = incident_norm * vertnorm;
vector upvec = d * vertnorm;
incident_norm -= (2 * upvec);
float dotp = subvec * incident_norm;
if (dotp < 0)
continue;
if (dotp > 1)
dotp = 1;
if (dotp > 0) {
int index = ((float)(MAX_SPECULAR_INCREMENTS - 1) * dotp);
float val = Specular_tables[2][index];
p->p3_a = val * Polymodel_effect.spec_scalar;
}
}
if (triangulated_faces[facenum])
g3_SetTriangulationTest(1);
g3_DrawPoly(fp->nverts, pointlist, 0);
if (triangulated_faces[facenum])
g3_SetTriangulationTest(0);
}
#define MAX_PARTS 100
// Draws a glowing cone of light that represents thrusters
void DrawThrusterEffect(vector *pos, float r, float g, float b, vector *norm, float size, float length) {
vector cur_pos = *pos;
float cur_length = 0;
vector glow_pos[MAX_PARTS];
float glow_size[MAX_PARTS];
int total_parts = 0;
if (length < .1)
return;
int num_divs = length * 3;
if (num_divs > MAX_PARTS)
num_divs = MAX_PARTS;
float size_change = size / num_divs;
float pos_change = length / num_divs;
if (!UseHardware)
return; // No software stuff here!
rend_SetZBufferWriteMask(0);
rend_SetAlphaType(AT_SATURATE_TEXTURE);
rend_SetAlphaValue(.3 * 255);
rend_SetLighting(LS_GOURAUD);
rend_SetColorModel(CM_RGB);
ddgr_color color = GR_RGB(r * 255, g * 255, b * 255);
int bm_handle = Fireballs[GRADIENT_BALL_INDEX].bm_handle;
int t;
// We must draw the small ones first, but we're starting the iteration from the
// large one. Consequently, we must store our variables so we can draw in reverse order
for (t = 0; t < num_divs && size > .05; t++) {
glow_pos[t] = cur_pos;
glow_size[t] = size;
size -= size_change;
cur_pos += ((*norm) * pos_change);
total_parts++;
}
for (t = total_parts - 1; t >= 0; t--) {
rend_SetZBias(-glow_size[t]);
g3_DrawBitmap(&glow_pos[t], glow_size[t], (glow_size[t] * bm_h(bm_handle, 0)) / bm_w(bm_handle, 0), bm_handle,
color);
}
rend_SetZBias(0.0);
rend_SetZBufferWriteMask(1);
}
// Draws a glowing cone of light
void DrawGlowEffect(vector *pos, float r, float g, float b, vector *norm, float size) {
if (!UseHardware)
return; // No software stuff here!
if (Polymodel_use_effect && Polymodel_effect.type & PEF_NO_GLOWS)
return;
rend_SetZBufferWriteMask(0);
rend_SetAlphaType(AT_SATURATE_TEXTURE);
rend_SetAlphaValue(.8 * 255);
rend_SetLighting(LS_GOURAUD);
rend_SetColorModel(CM_RGB);
ddgr_color color = GR_RGB(r * 255, g * 255, b * 255);
int bm_handle = Fireballs[GRADIENT_BALL_INDEX].bm_handle;
rend_SetZBias(-size);
g3_DrawBitmap(pos, size, (size * bm_h(bm_handle, 0)) / bm_w(bm_handle, 0), bm_handle, color);
rend_SetZBias(0.0);
rend_SetZBufferWriteMask(1);
}
void RenderSubmodelFacesSorted(poly_model *pm, bsp_info *sm) {
int i, t;
int rcount;
int model_render_order[MAX_POLYGON_VECS];
int modelnum = sm - pm->submodel;
ASSERT(sm->nverts < MAX_POLYGON_VECS);
// Build list of visible (non-backfacing) faces, & compute average face depths
for (i = rcount = 0; i < sm->num_faces; i++) {
polyface *fp = &sm->faces[i];
// check for visible face
if (g3_CheckNormalFacing(&sm->verts[fp->vertnums[0]], &fp->normal)) {
face_depth[i] = 0;
for (t = 0; t < fp->nverts; t++)
face_depth[i] += Robot_points[fp->vertnums[t]].p3_z;
face_depth[i] /= fp->nverts;
// initialize order list
model_render_order[rcount] = i;
rcount++;
ASSERT(rcount < MAX_POLYGON_VECS);
}
}
// Sort the faces
qsort(model_render_order, rcount, sizeof(*model_render_order),
(int (*)(const void *, const void *))ModelFaceSortFunc);
for (i = rcount - 1; i >= 0; i--) {
int facenum = model_render_order[i];
RenderSubmodelFace(pm, sm, facenum);
}
}
void RenderSubmodelFacesUnsorted(poly_model *pm, bsp_info *sm) {
int i;
int modelnum = sm - pm->submodel;
short alpha_faces[MAX_FACES_PER_ROOM], num_alpha_faces = 0;
int rcount = 0;
vector view_pos;
g3_GetViewPosition(&view_pos);
g3_GetUnscaledMatrix(&Unscaled_bumpmap_matrix);
Specular_view_pos = view_pos;
Bump_view_pos = view_pos;
if (modelnum < 0 || modelnum >= pm->n_models) {
Error("Got bad model number %d from polymodel %s!", modelnum, pm->name);
return;
}
if (sm->flags & SOF_CUSTOM)
rend_SetZBias(-.5);
for (i = 0; i < sm->num_faces; i++) {
vector tempv;
polyface *fp = &sm->faces[i];
texture *texp;
// Check to see if this face even faces us!
tempv = view_pos - sm->verts[fp->vertnums[0]];
if ((tempv * fp->normal) < 0)
continue;
if (fp->texnum != -1) {
texp = &GameTextures[pm->textures[fp->texnum]];
if (texp->flags & TF_ALPHA || texp->flags & TF_SATURATE) {
alpha_faces[num_alpha_faces++] = i;
continue;
}
}
if (StateLimited) {
State_elements[rcount].facenum = i;
State_elements[rcount].sort_key = pm->textures[fp->texnum];
rcount++;
} else
RenderSubmodelFace(pm, sm, i);
}
if (StateLimited) {
SortStates(State_elements, rcount);
for (i = rcount - 1; i >= 0; i--) {
int facenum = State_elements[i].facenum;
RenderSubmodelFace(pm, sm, facenum);
}
if (!NoLightmaps) {
if (!UseMultitexture && Polymodel_light_type == POLYMODEL_LIGHTING_LIGHTMAP) {
rend_SetAlphaType(AT_LIGHTMAP_BLEND);
rend_SetLighting(LS_GOURAUD);
rend_SetColorModel(CM_MONO);
rend_SetOverlayType(OT_NONE);
rend_SetTextureType(TT_PERSPECTIVE);
rend_SetWrapType(WT_CLAMP);
rend_SetMipState(0);
for (i = rcount - 1; i >= 0; i--) {
int facenum = State_elements[i].facenum;
RenderSubmodelLightmapFace(pm, sm, facenum);
}
rend_SetWrapType(WT_WRAP);
rend_SetMipState(1);
}
}
}
// Now render all alpha faces
// rend_SetZBufferWriteMask (0);
for (i = 0; i < num_alpha_faces; i++)
RenderSubmodelFace(pm, sm, alpha_faces[i]);
// rend_SetZBufferWriteMask (1);
if (sm->flags & SOF_CUSTOM)
rend_SetZBias(0);
// Draw specular faces if needed
if (Polymodel_use_effect && Polymodel_effect.type & (PEF_SPECULAR_MODEL | PEF_SPECULAR_FACES)) {
rend_SetOverlayType(OT_NONE);
rend_SetTextureType(TT_FLAT);
rend_SetLighting(LS_NONE);
rend_SetColorModel(CM_MONO);
rend_SetAlphaType(AT_SATURATE_VERTEX);
rend_SetAlphaValue(255);
rend_SetZBufferWriteMask(0);
rend_SetFlatColor(GR_RGB((int)(Polymodel_effect.spec_r * 255.0), (int)(Polymodel_effect.spec_g * 255.0),
(int)(Polymodel_effect.spec_b * 255.0)));
for (i = 0; i < sm->num_faces; i++) {
polyface *fp = &sm->faces[i];
if (!g3_CheckNormalFacing(&sm->verts[fp->vertnums[0]], &fp->normal))
continue;
/* vector subvec=sm->verts[fp->vertnums[0]]-Polymodel_specular_pos;
if ((fp->normal * subvec)> 0)
continue;*/
if ((Polymodel_effect.type & PEF_SPECULAR_MODEL) ||
(fp->texnum != -1 && GameTextures[pm->textures[fp->texnum]].flags & TF_SPECULAR))
RenderSubmodelFaceSpecular(pm, sm, i);
}
rend_SetZBufferWriteMask(1);
}
// Draw fog if need be
if (Polymodel_use_effect && Polymodel_effect.type & PEF_FOGGED_MODEL) {
matrix mat;
g3_GetUnscaledMatrix(&mat);
g3_GetViewPosition(&Fog_view_pos);
Fog_plane = mat.fvec;
if (Polymodel_effect.fog_plane_check == 1)
Fog_distance = -(vm_DotProduct(&Fog_plane, &Fog_view_pos));
else {
Fog_distance = -(vm_DotProduct(&Polymodel_fog_plane, &Polymodel_fog_portal_vert));
Fog_eye_distance = (Fog_view_pos * Polymodel_fog_plane) + Fog_distance;
}
rend_SetOverlayType(OT_NONE);
rend_SetTextureType(TT_FLAT);
rend_SetLighting(LS_NONE);
rend_SetColorModel(CM_MONO);
rend_SetAlphaType(AT_VERTEX);
rend_SetAlphaValue(255);
rend_SetZBufferWriteMask(0);
rend_SetCoplanarPolygonOffset(1);
rend_SetFlatColor(GR_RGB((int)(Polymodel_effect.fog_r * 255.0), (int)(Polymodel_effect.fog_g * 255.0),
(int)(Polymodel_effect.fog_b * 255.0)));
for (i = 0; i < sm->num_faces; i++) {
polyface *fp = &sm->faces[i];
if (!g3_CheckNormalFacing(&sm->verts[fp->vertnums[0]], &fp->normal))
continue;
RenderSubmodelFaceFogged(pm, sm, i);
}
rend_SetCoplanarPolygonOffset(0);
rend_SetZBufferWriteMask(1);
}
}
// Rotates all of the points of a submodel, plus supplies color info
void RotateModelPoints(poly_model *pm, bsp_info *sm) {
// Figure out lighting
if (Polymodel_light_type == POLYMODEL_LIGHTING_STATIC) {
if ((Polymodel_use_effect && (Polymodel_effect.type & PEF_DEFORM)) || (sm->flags & SOF_JITTER)) {
for (int i = 0; i < sm->nverts; i++) {
vector vec = sm->verts[i];
float val = ((ps_rand() % 1000) - 500.0) / 500.0;
vec *= 1.0 + (Polymodel_effect.deform_range * val);
g3_RotatePoint(&Robot_points[i], &vec);
}
} else {
for (int i = 0; i < sm->nverts; i++)
g3_RotatePoint(&Robot_points[i], &sm->verts[i]);
}
} else if (Polymodel_light_type == POLYMODEL_LIGHTING_LIGHTMAP) {
if ((Polymodel_use_effect && (Polymodel_effect.type & PEF_DEFORM)) || (sm->flags & SOF_JITTER)) {
for (int i = 0; i < sm->nverts; i++) {
vector vec = sm->verts[i];
float val = ((ps_rand() % 1000) - 500.0) / 500.0;
vec *= 1.0 + (Polymodel_effect.deform_range * val);
g3_RotatePoint(&Robot_points[i], &vec);
Robot_points[i].p3_r = 1.0;
Robot_points[i].p3_g = 1.0;
Robot_points[i].p3_b = 1.0;
}
} else {
for (int i = 0; i < sm->nverts; i++) {
g3_RotatePoint(&Robot_points[i], &sm->verts[i]);
Robot_points[i].p3_r = 1.0;
Robot_points[i].p3_g = 1.0;
Robot_points[i].p3_b = 1.0;
}
}
} else if (Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
if (Polymodel_use_effect && Polymodel_effect.type & PEF_COLOR) {
if ((Polymodel_use_effect && (Polymodel_effect.type & PEF_DEFORM)) || (sm->flags & SOF_JITTER)) {
for (int i = 0; i < sm->nverts; i++) {
vector vec = sm->verts[i];
float val = ((ps_rand() % 1000) - 500.0) / 500.0;
vec *= 1.0 + (Polymodel_effect.deform_range * val);
g3_RotatePoint(&Robot_points[i], &vec);
vector normvec = sm->vertnorms[i];
val = (-vm_DotProduct(Polymodel_light_direction, &normvec) + 1.0) / 2;
Robot_points[i].p3_r = Polymodel_effect.r * val * Polylighting_static_red;
Robot_points[i].p3_g = Polymodel_effect.g * val * Polylighting_static_green;
Robot_points[i].p3_b = Polymodel_effect.b * val * Polylighting_static_blue;
}
} else {
if ((Polymodel_use_effect && (Polymodel_effect.type & PEF_DEFORM)) || (sm->flags & SOF_JITTER)) {
for (int i = 0; i < sm->nverts; i++) {
vector vec = sm->verts[i];
float val = ((ps_rand() % 1000) - 500.0) / 500.0;
vec *= 1.0 + (Polymodel_effect.deform_range * val);
g3_RotatePoint(&Robot_points[i], &vec);
vector normvec = sm->vertnorms[i];
val = (-vm_DotProduct(Polymodel_light_direction, &normvec) + 1.0) / 2;
Robot_points[i].p3_r = Polymodel_effect.r * val * Polylighting_static_red;
Robot_points[i].p3_g = Polymodel_effect.g * val * Polylighting_static_green;
Robot_points[i].p3_b = Polymodel_effect.b * val * Polylighting_static_blue;
}
} else {
for (int i = 0; i < sm->nverts; i++) {
g3_RotatePoint(&Robot_points[i], &sm->verts[i]);
vector normvec = sm->vertnorms[i];
float val = (-vm_DotProduct(Polymodel_light_direction, &normvec) + 1.0) / 2;
Robot_points[i].p3_r = Polymodel_effect.r * val * Polylighting_static_red;
Robot_points[i].p3_g = Polymodel_effect.g * val * Polylighting_static_green;
Robot_points[i].p3_b = Polymodel_effect.b * val * Polylighting_static_blue;
}
}
}
} else {
if ((Polymodel_use_effect && (Polymodel_effect.type & PEF_DEFORM)) || (sm->flags & SOF_JITTER)) {
for (int i = 0; i < sm->nverts; i++) {
vector vec = sm->verts[i];
float val = ((ps_rand() % 1000) - 500.0) / 500.0;
vec *= 1.0 + (Polymodel_effect.deform_range * val);
g3_RotatePoint(&Robot_points[i], &vec);
vector normvec = sm->vertnorms[i];
val = (-vm_DotProduct(Polymodel_light_direction, &normvec) + 1.0) / 2;
Robot_points[i].p3_r = val * Polylighting_static_red;
Robot_points[i].p3_g = val * Polylighting_static_green;
Robot_points[i].p3_b = val * Polylighting_static_blue;
}
} else {
for (int i = 0; i < sm->nverts; i++) {
g3_RotatePoint(&Robot_points[i], &sm->verts[i]);
vector normvec = sm->vertnorms[i];
float val = (-vm_DotProduct(Polymodel_light_direction, &normvec) + 1.0) / 2;
Robot_points[i].p3_r = val * Polylighting_static_red;
Robot_points[i].p3_g = val * Polylighting_static_green;
Robot_points[i].p3_b = val * Polylighting_static_blue;
}
}
}
}
#ifndef RELEASE
if (!UseHardware) {
for (int i = 0; i < sm->nverts; i++)
Robot_points[i].p3_l = Robot_points[i].p3_g;
rend_SetColorModel(CM_MONO);
}
#endif
}
void RenderSubmodel(poly_model *pm, bsp_info *sm, uint f_render_sub) {
int i;
matrix lightmatrix;
// Don't render door housings
if (IsNonRenderableSubmodel(pm, sm - pm->submodel))
return;
if (Polymodel_light_type != POLYMODEL_LIGHTING_LIGHTMAP) {
// Turn off bumpmapping if not needed
rend_SetBumpmapReadyState(0, 0);
} else {
if (!StateLimited || UseMultitexture)
rend_SetOverlayType(OT_BLEND);
}
if (Multicolor_texture == -1 && Polymodel_use_effect && (Polymodel_effect.type & PEF_CUSTOM_COLOR))
Multicolor_texture = FindTextureName("MultiColor");
rend_SetColorModel(CM_RGB);
StartPolyModelPosInstance(&sm->mod_pos);
vector temp_vec = sm->mod_pos + sm->offset;
g3_StartInstanceAngles(&temp_vec, &sm->angs);
vm_AnglesToMatrix(&lightmatrix, sm->angs.p, sm->angs.h, sm->angs.b);
StartLightInstance(&temp_vec, &lightmatrix);
// Check my bit to see if I get drawn
if (f_render_sub & (0x00000001 << (sm - pm->submodel))) {
if (sm->flags & SOF_CUSTOM) {
if (!(Polymodel_effect.type & PEF_CUSTOM_TEXTURE))
goto pop_lighting;
}
// Check to draw glow faces
if (sm->flags & (SOF_GLOW | SOF_THRUSTER)) {
if (!FacingPass)
goto pop_lighting;
vector zero_pos = {0, 0, 0};
rend_SetOverlayType(OT_NONE);
if (Polymodel_use_effect && Polymodel_effect.type & PEF_GLOW_SCALAR) {
if (Polymodel_effect.type & PEF_CUSTOM_GLOW)
DrawThrusterEffect(&zero_pos, Polymodel_effect.glow_r, Polymodel_effect.glow_g, Polymodel_effect.glow_b,
&sm->glow_info->normal, sm->glow_info->glow_size * Polymodel_effect.glow_size_scalar,
3 * Polymodel_effect.glow_length_scalar);
else
DrawThrusterEffect(&zero_pos, sm->glow_info->glow_r, sm->glow_info->glow_g, sm->glow_info->glow_b,
&sm->glow_info->normal, sm->glow_info->glow_size * Polymodel_effect.glow_size_scalar,
3 * Polymodel_effect.glow_length_scalar);
} else {
if (Polymodel_use_effect && Polymodel_effect.type & PEF_CUSTOM_GLOW)
DrawGlowEffect(&zero_pos, Polymodel_effect.glow_r, Polymodel_effect.glow_g, Polymodel_effect.glow_b,
&sm->glow_info->normal, sm->glow_info->glow_size);
else
DrawGlowEffect(&zero_pos, sm->glow_info->glow_r, sm->glow_info->glow_g, sm->glow_info->glow_b,
&sm->glow_info->normal, sm->glow_info->glow_size);
}
goto pop_lighting;
} else if (sm->flags & SOF_FACING) {
if (!FacingPass)
goto pop_lighting;
vector pos;
rend_SetLighting(LS_NONE);
rend_SetColorModel(CM_MONO);
rend_SetOverlayType(OT_NONE);
int bm_handle = GetTextureBitmap(pm->textures[sm->faces[0].texnum], 0);
rend_SetAlphaValue(GameTextures[pm->textures[sm->faces[0].texnum]].alpha * 255);
vm_MakeZero(&pos);
if (GameTextures[pm->textures[sm->faces[0].texnum]].flags & TF_SATURATE)
rend_SetAlphaType(AT_SATURATE_TEXTURE);
else
rend_SetAlphaType(ATF_CONSTANT + ATF_TEXTURE);
rend_SetZBufferWriteMask(0);
g3_DrawBitmap(&pos, sm->rad, (sm->rad * bm_h(bm_handle, 0)) / bm_w(bm_handle, 0), bm_handle);
rend_SetZBufferWriteMask(1);
goto pop_lighting;
} else {
if (FacingPass)
goto pop_lighting;
}
RotateModelPoints(pm, sm);
if (!UseHardware)
RenderSubmodelFacesSorted(pm, sm);
else
RenderSubmodelFacesUnsorted(pm, sm);
}
pop_lighting:
for (i = 0; i < sm->num_children; i++) {
RenderSubmodel(pm, &pm->submodel[sm->children[i]], f_render_sub);
}
g3_DoneInstance();
DonePolyModelPosInstance();
DoneLightInstance();
}
int RenderPolygonModel(poly_model *pm, uint f_render_sub) {
ASSERT(pm->new_style == 1);
int i = 0;
rend_SetAlphaType(ATF_CONSTANT + ATF_VERTEX);
rend_SetWrapType(WT_WRAP);
FacingPass = 0;
for (i = 0; i < pm->n_models; i++) {
bsp_info *sm = &pm->submodel[i];
if (sm->parent == -1)
RenderSubmodel(pm, sm, f_render_sub);
}
// Now render any facing submodels
if (pm->flags & PMF_FACING) {
// Don't render if we have it set for no glows
FacingPass = 1;
rend_SetOverlayType(OT_NONE);
for (i = 0; i < pm->n_models; i++) {
bsp_info *sm = &pm->submodel[i];
if (sm->parent == -1)
RenderSubmodel(pm, sm, f_render_sub);
}
}
FacingPass = 0;
return 1;
}
float ComputeDefaultSizeFunc(int handle, float *size_ptr, vector *offset_ptr, bool f_use_all_frames) {
poly_model *pm;
matrix m;
float normalized_time[MAX_SUBOBJECTS];
int model_index, sm_vert_index, frame_index;
float cur_dist;
float size = 0.0;
int start_frame = 0;
int end_frame = 0;
vector geometric_center = Zero_vector;
// Chris: Come see me when you are ready to deal with the paging problem - JL
pm = GetPolymodelPointer(handle);
ASSERT(start_frame <= end_frame);
ASSERT(end_frame <= pm->frame_max);
if (f_use_all_frames) {
end_frame = pm->frame_max;
}
if (offset_ptr) {
vector min_xyz;
vector max_xyz;
bool first_pnt = true;
for (frame_index = start_frame; frame_index <= end_frame; frame_index++) {
// Because size changes with animation, we need the worst case point -- so, check every keyframe
// NOTE: This code does not currently account for all $turret and $rotate positions
SetNormalizedTimeAnim(frame_index, normalized_time, pm);
SetModelAnglesAndPos(pm, normalized_time);
for (model_index = 0; model_index < pm->n_models; model_index++) {
bsp_info *sm = &pm->submodel[model_index];
// For every vertex
for (sm_vert_index = 0; sm_vert_index < sm->nverts; sm_vert_index++) {
vector pnt;
int mn;
// Get the point and its current sub-object
pnt = sm->verts[sm_vert_index];
mn = model_index;
// Instance up the tree
while (mn != -1) {
vector tpnt;
vm_AnglesToMatrix(&m, pm->submodel[mn].angs.p, pm->submodel[mn].angs.h, pm->submodel[mn].angs.b);
vm_TransposeMatrix(&m);
tpnt = pnt * m;
pnt = tpnt + pm->submodel[mn].offset + pm->submodel[mn].mod_pos;
mn = pm->submodel[mn].parent;
}
// Maybe use for other code -- Accounts for world coordinates
// m = obj->orient;
// vm_TransposeMatrix(&m);
//
// pnt = pnt * m;
//
// *gun_point += obj->pos;
// Find the min_xyz and max_xyz
if (first_pnt) {
first_pnt = false;
min_xyz = max_xyz = pnt;
} else {
if (pnt.x < min_xyz.x)
min_xyz.x = pnt.x;
else if (pnt.x > max_xyz.x)
max_xyz.x = pnt.x;
if (pnt.y < min_xyz.y)
min_xyz.y = pnt.y;
else if (pnt.y > max_xyz.y)
max_xyz.y = pnt.y;
if (pnt.z < min_xyz.z)
min_xyz.z = pnt.z;
else if (pnt.z > max_xyz.z)
max_xyz.z = pnt.z;
}
}
}
}
geometric_center = (max_xyz + min_xyz) / 2.0;
*offset_ptr = geometric_center;
}
for (frame_index = start_frame; frame_index <= end_frame; frame_index++) {
// Because size changes with animation, we need the worst case point -- so, check every keyframe
// NOTE: This code does not currently account for all $turret and $rotate positions
SetNormalizedTimeAnim(frame_index, normalized_time, pm);
SetModelAnglesAndPos(pm, normalized_time);
for (model_index = 0; model_index < pm->n_models; model_index++) {
bsp_info *sm = &pm->submodel[model_index];
// For every vertex
for (sm_vert_index = 0; sm_vert_index < sm->nverts; sm_vert_index++) {
vector pnt;
int mn;
// Get the point and its current sub-object
pnt = sm->verts[sm_vert_index];
mn = model_index;
// Instance up the tree
while (mn != -1) {
vector tpnt;
vm_AnglesToMatrix(&m, pm->submodel[mn].angs.p, pm->submodel[mn].angs.h, pm->submodel[mn].angs.b);
vm_TransposeMatrix(&m);
tpnt = pnt * m;
pnt = tpnt + pm->submodel[mn].offset + pm->submodel[mn].mod_pos;
mn = pm->submodel[mn].parent;
}
// Maybe use for other code -- Accounts for world coordinates
// m = obj->orient;
// vm_TransposeMatrix(&m);
//
// pnt = pnt * m;
//
// *gun_point += obj->pos;
cur_dist = vm_VectorDistance(&geometric_center, &pnt);
if (cur_dist > size)
size = cur_dist;
}
}
}
// This is a arbitary value. It allows for some turret and rotations to be caught
size = size + 0.01f;
if (size_ptr) // DAJ
*size_ptr = size;
return size;
}
float ComputeDefaultSize(int type, int handle, float *size_ptr) {
float size = ComputeDefaultSizeFunc(handle, size_ptr, NULL, true);
if (type != OBJ_WEAPON && type != OBJ_DEBRIS && type != OBJ_POWERUP) {
ComputeDefaultSizeFunc(handle, &Poly_models[handle].wall_size, &Poly_models[handle].wall_size_offset, false);
ComputeDefaultSizeFunc(handle, &Poly_models[handle].anim_size, &Poly_models[handle].anim_size_offset, true);
if (type == OBJ_PLAYER) {
Poly_models[handle].anim_size *= PLAYER_SIZE_SCALAR;
Poly_models[handle].anim_size_offset = Zero_vector;
}
} else {
if (type == OBJ_POWERUP) {
size *= 2.0f;
*size_ptr *= 2.0f;
}
Poly_models[handle].wall_size = size;
Poly_models[handle].wall_size_offset = Zero_vector;
Poly_models[handle].anim_size = size;
Poly_models[handle].anim_size_offset = Zero_vector;
}
Poly_models[handle].flags |= PMF_SIZE_COMPUTED;
return size;
}
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