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quakeforge/libs/video/renderer/glsl/glsl_particles.c
Bill Currie dacda50130 [renderer] Stub out all the vulkan functions 
nq-x11 now gets through all three demos without crashing (but without
rendering anything useful, though).
2021-01-18 12:46:06 +09:00

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/*
gl_dyn_part.c
OpenGL particle system.
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define NH_DEFINE
#include "namehack.h"
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/image.h"
#include "QF/mersenne.h"
#include "QF/qargs.h"
#include "QF/quakefs.h"
#include "QF/render.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/GLSL/defines.h"
#include "QF/GLSL/funcs.h"
//#include "QF/GL/qf_explosions.h"
#include "QF/GLSL/qf_particles.h"
#include "QF/GLSL/qf_textures.h"
#include "QF/GLSL/qf_vid.h"
#include "r_internal.h"
static mtstate_t mt; // private PRNG state
//FIXME not part of GLES, but needed for GL
#ifndef GL_VERTEX_PROGRAM_POINT_SIZE
# define GL_VERTEX_PROGRAM_POINT_SIZE 0x8642
#endif
//FIXME should not be here
static int ramp1[8] = { 0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61 };
//static int ramp2[8] = { 0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66 };
static int ramp3[8] = { 0x6d, 0x6b, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01 };
static vec3_t vertex_normals[NUMVERTEXNORMALS] = {
#include "anorms.h"
};
static GLushort *pVAindices;
static partvert_t *particleVertexArray;
static GLuint part_tex;
static const char *particle_point_vert_effects[] =
{
"QuakeForge.Vertex.particle.point",
0
};
static const char *particle_point_frag_effects[] =
{
"QuakeForge.Fragment.fog",
"QuakeForge.Fragment.palette",
"QuakeForge.Fragment.particle.point",
0
};
static const char *particle_textured_vert_effects[] =
{
"QuakeForge.Vertex.particle.textured",
0
};
static const char *particle_textured_frag_effects[] =
{
"QuakeForge.Fragment.fog",
"QuakeForge.Fragment.palette",
"QuakeForge.Fragment.particle.textured",
0
};
static struct {
int program;
shaderparam_t mvp_matrix;
shaderparam_t vertex;
shaderparam_t palette;
shaderparam_t color;
shaderparam_t fog;
} quake_point = {
0,
{"mvp_mat", 1},
{"vertex", 0},
{"palette", 1},
{"vcolor", 0},
{"fog", 1},
};
static struct {
int program;
shaderparam_t mvp_matrix;
shaderparam_t st;
shaderparam_t vertex;
shaderparam_t color;
shaderparam_t texture;
shaderparam_t fog;
} quake_part = {
0,
{"mvp_mat", 1},
{"vst", 0},
{"vertex", 0},
{"vcolor", 0},
{"texture", 1},
{"fog", 1},
};
inline static void
particle_new (ptype_t type, int texnum, const vec3_t org, float scale,
const vec3_t vel, float die, int color, float alpha, float ramp)
{
particle_t *part;
/*
// Uncomment this for particle debugging!
if (numparticles >= r_maxparticles) {
Sys_Error ("FAILED PARTICLE ALLOC!");
return NULL;
}
*/
part = &particles[numparticles++];
VectorCopy (org, part->org);
part->color = color;
part->tex = texnum;
part->scale = scale;
part->alpha = alpha;
VectorCopy (vel, part->vel);
part->type = type;
part->die = die;
part->ramp = ramp;
part->phys = R_ParticlePhysics (type);
}
/*
particle_new_random
note that org_fuzz & vel_fuzz should be ints greater than 0 if you are
going to bother using this function.
*/
inline static void
particle_new_random (ptype_t type, int texnum, const vec3_t org, int org_fuzz,
float scale, int vel_fuzz, float die, int color,
float alpha, float ramp)
{
float o_fuzz = org_fuzz, v_fuzz = vel_fuzz;
int rnd;
vec3_t porg, pvel;
rnd = mtwist_rand (&mt);
porg[0] = o_fuzz * ((rnd & 63) - 31.5) / 63.0 + org[0];
porg[1] = o_fuzz * (((rnd >> 6) & 63) - 31.5) / 63.0 + org[1];
porg[2] = o_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0 + org[2];
rnd = mtwist_rand (&mt);
pvel[0] = v_fuzz * ((rnd & 63) - 31.5) / 63.0;
pvel[1] = v_fuzz * (((rnd >> 6) & 63) - 31.5) / 63.0;
pvel[2] = v_fuzz * (((rnd >> 10) & 63) - 31.5) / 63.0;
particle_new (type, texnum, porg, scale, pvel, die, color, alpha, ramp);
}
/*
inline static void
particle_new_veryrandom (ptype_t type, int texnum, const vec3_t org,
int org_fuzz, float scale, int vel_fuzz, float die,
int color, float alpha, float ramp)
{
vec3_t porg, pvel;
porg[0] = qfrandom (org_fuzz * 2) - org_fuzz + org[0];
porg[1] = qfrandom (org_fuzz * 2) - org_fuzz + org[1];
porg[2] = qfrandom (org_fuzz * 2) - org_fuzz + org[2];
pvel[0] = qfrandom (vel_fuzz * 2) - vel_fuzz;
pvel[1] = qfrandom (vel_fuzz * 2) - vel_fuzz;
pvel[2] = qfrandom (vel_fuzz * 2) - vel_fuzz;
particle_new (type, texnum, porg, scale, pvel, die, color, alpha, ramp);
}
*/
void
glsl_R_ClearParticles (void)
{
numparticles = 0;
}
void
glsl_R_InitParticles (void)
{
shader_t *vert_shader, *frag_shader;
unsigned i;
int vert;
int frag;
float v[2] = {0, 0};
byte data[64][64][2];
tex_t *tex;
mtwist_seed (&mt, 0xdeadbeef);
qfeglEnable (GL_VERTEX_PROGRAM_POINT_SIZE);
qfeglGetFloatv (GL_ALIASED_POINT_SIZE_RANGE, v);
Sys_MaskPrintf (SYS_GLSL, "point size: %g - %g\n", v[0], v[1]);
vert_shader = GLSL_BuildShader (particle_point_vert_effects);
frag_shader = GLSL_BuildShader (particle_point_frag_effects);
vert = GLSL_CompileShader ("quakepnt.vert", vert_shader,
GL_VERTEX_SHADER);
frag = GLSL_CompileShader ("quakepnt.frag", frag_shader,
GL_FRAGMENT_SHADER);
quake_point.program = GLSL_LinkProgram ("quakepoint", vert, frag);
GLSL_ResolveShaderParam (quake_point.program, &quake_point.mvp_matrix);
GLSL_ResolveShaderParam (quake_point.program, &quake_point.vertex);
GLSL_ResolveShaderParam (quake_point.program, &quake_point.palette);
GLSL_ResolveShaderParam (quake_point.program, &quake_point.color);
GLSL_ResolveShaderParam (quake_point.program, &quake_point.fog);
GLSL_FreeShader (vert_shader);
GLSL_FreeShader (frag_shader);
vert_shader = GLSL_BuildShader (particle_textured_vert_effects);
frag_shader = GLSL_BuildShader (particle_textured_frag_effects);
vert = GLSL_CompileShader ("quakepar.vert", vert_shader,
GL_VERTEX_SHADER);
frag = GLSL_CompileShader ("quakepar.frag", frag_shader,
GL_FRAGMENT_SHADER);
quake_part.program = GLSL_LinkProgram ("quakepart", vert, frag);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.mvp_matrix);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.st);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.vertex);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.color);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.texture);
GLSL_ResolveShaderParam (quake_part.program, &quake_part.fog);
GLSL_FreeShader (vert_shader);
GLSL_FreeShader (frag_shader);
memset (data, 0, sizeof (data));
qfeglGenTextures (1, &part_tex);
qfeglBindTexture (GL_TEXTURE_2D, part_tex);
qfeglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
qfeglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
qfeglTexImage2D (GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, 64, 64, 0,
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, data);
tex = R_DotParticleTexture ();
qfeglTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
tex = R_SparkParticleTexture ();
qfeglTexSubImage2D (GL_TEXTURE_2D, 0, 32, 0, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
tex = R_SmokeParticleTexture ();
qfeglTexSubImage2D (GL_TEXTURE_2D, 0, 0, 32, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
if (particleVertexArray)
free (particleVertexArray);
particleVertexArray = calloc (r_maxparticles * 4, sizeof (partvert_t));
if (pVAindices)
free (pVAindices);
pVAindices = calloc (r_maxparticles * 6, sizeof (GLushort));
for (i = 0; i < r_maxparticles; i++) {
pVAindices[i * 6 + 0] = i * 4 + 0;
pVAindices[i * 6 + 1] = i * 4 + 1;
pVAindices[i * 6 + 2] = i * 4 + 2;
pVAindices[i * 6 + 3] = i * 4 + 0;
pVAindices[i * 6 + 4] = i * 4 + 2;
pVAindices[i * 6 + 5] = i * 4 + 3;
}
}
void
glsl_R_ReadPointFile_f (void)
{
const char *name;
char *mapname;
int c, r;
vec3_t org;
QFile *f;
mapname = strdup (r_worldentity.model->name);
if (!mapname)
Sys_Error ("Can't duplicate mapname!");
QFS_StripExtension (mapname, mapname);
name = va ("%s.pts", mapname);
free (mapname);
f = QFS_FOpenFile (name);
if (!f) {
Sys_Printf ("couldn't open %s\n", name);
return;
}
Sys_MaskPrintf (SYS_DEV, "Reading %s...\n", name);
c = 0;
for (;;) {
char buf[64];
Qgets (f, buf, sizeof (buf));
r = sscanf (buf, "%f %f %f\n", &org[0], &org[1], &org[2]);
if (r != 3)
break;
c++;
if (numparticles >= r_maxparticles) {
Sys_MaskPrintf (SYS_DEV, "Not enough free particles\n");
break;
} else {
particle_new (pt_static, part_tex_dot, org, 1.5, vec3_origin,
99999, (-c) & 15, 1.0, 0.0);
}
}
Qclose (f);
Sys_MaskPrintf (SYS_DEV, "%i points read\n", c);
}
static void
R_ParticleExplosion_QF (const vec3_t org)
{
// R_NewExplosion (org);
if (numparticles >= r_maxparticles)
return;
particle_new_random (pt_smokecloud, part_tex_smoke, org, 4, 30, 8,
vr_data.realtime + 5.0, (mtwist_rand (&mt) & 7) + 8,
0.5 + qfrandom (0.25), 0.0);
}
static void
R_ParticleExplosion2_QF (const vec3_t org, int colorStart, int colorLength)
{
unsigned int i, j = 512;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 16, 2, 256,
vr_data.realtime + 0.3,
colorStart + (i % colorLength), 1.0, 0.0);
}
}
static void
R_BlobExplosion_QF (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 12, 2, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 7) * 0.05,
66 + i % 6, 1.0, 0.0);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_blob2, part_tex_dot, org, 12, 2, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 7) * 0.05,
150 + i % 6, 1.0, 0.0);
}
}
static inline void
R_RunSparkEffect_QF (const vec3_t org, int count, int ofuzz)
{
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, ofuzz * 0.08,
vec3_origin, vr_data.realtime + 9, 12 + (mtwist_rand (&mt) & 3),
0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
if (count) {
int orgfuzz = ofuzz * 3 / 4;
if (orgfuzz < 1)
orgfuzz = 1;
while (count--) {
int color = mtwist_rand (&mt) & 7;
particle_new_random (pt_fallfadespark, part_tex_dot, org, orgfuzz,
0.7, 96, vr_data.realtime + 5.0, ramp1[color],
1.0, color);
}
}
}
static inline void
R_BloodPuff_QF (const vec3_t org, int count)
{
if (numparticles >= r_maxparticles)
return;
particle_new (pt_bloodcloud, part_tex_smoke, org, count / 5, vec3_origin,
vr_data.realtime + 99.0, 70 + (mtwist_rand (&mt) & 3), 0.5, 0.0);
}
static void
R_BloodPuffEffect_QF (const vec3_t org, int count)
{
R_BloodPuff_QF (org, count);
}
static void
R_GunshotEffect_QF (const vec3_t org, int count)
{
int scale = 16;
scale += count / 15;
R_RunSparkEffect_QF (org, count >> 1, scale);
}
static void
R_LightningBloodEffect_QF (const vec3_t org)
{
int count = 7;
R_BloodPuff_QF (org, 50);
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 3.0, vec3_origin,
vr_data.realtime + 9.0, 12 + (mtwist_rand (&mt) & 3),
0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_spark, org, 12, 2.0, 128,
vr_data.realtime + 5.0, 244 + (count % 3),
1.0, 0.0);
}
static void
R_RunParticleEffect_QF (const vec3_t org, const vec3_t dir, int color,
int count)
{
float scale;
int i;
vec3_t porg;
if (numparticles >= r_maxparticles)
return;
scale = pow (count, 0.23); // calculate scale before clipping to part. max
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
for (i = 0; i < count; i++) {
int rnd = mtwist_rand (&mt);
porg[0] = org[0] + scale * (((rnd >> 3) & 15) - 7.5);
porg[1] = org[1] + scale * (((rnd >> 7) & 15) - 7.5);
porg[2] = org[2] + scale * (((rnd >> 11) & 15) - 7.5);
// Note that ParseParticleEffect handles (dir * 15)
particle_new (pt_grav, part_tex_dot, porg, 1.5, dir,
vr_data.realtime + 0.1 * (i % 5),
(color & ~7) + (rnd & 7), 1.0, 0.0);
}
}
static void
R_SpikeEffect_QF (const vec3_t org)
{
R_RunSparkEffect_QF (org, 5, 8);
}
static void
R_SuperSpikeEffect_QF (const vec3_t org)
{
R_RunSparkEffect_QF (org, 10, 8);
}
static void
R_KnightSpikeEffect_QF (const vec3_t org)
{
unsigned int count = 10;
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 1.0, vec3_origin,
vr_data.realtime + 9.0, 234, 0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_dot, org, 6, 0.7, 96,
vr_data.realtime + 5.0, 234, 1.0, 0.0);
}
static void
R_WizSpikeEffect_QF (const vec3_t org)
{
unsigned int count = 15;
if (numparticles >= r_maxparticles)
return;
particle_new (pt_smokecloud, part_tex_smoke, org, 2.0, vec3_origin,
vr_data.realtime + 9.0, 63, 0.25 + qfrandom (0.125), 0.0);
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
while (count--)
particle_new_random (pt_fallfade, part_tex_dot, org, 12, 0.7, 96,
vr_data.realtime + 5.0, 63, 1.0, 0.0);
}
static void
R_LavaSplash_QF (const vec3_t org)
{
float vel;
int rnd, i, j;
int k = 256;
vec3_t dir, porg, pvel;
if (numparticles + k >= r_maxparticles) {
return;
} // else if (numparticles + k >= r_maxparticles) {
// k = r_maxparticles - numparticles;
// }
dir[2] = 256;
for (i = -128; i < 128; i += 16) {
for (j = -128; j < 128; j += 16) {
rnd = mtwist_rand (&mt);
dir[0] = j + (rnd & 7);
dir[1] = i + ((rnd >> 6) & 7);
porg[0] = org[0] + dir[0];
porg[1] = org[1] + dir[1];
porg[2] = org[2] + ((rnd >> 9) & 63);
VectorNormalize (dir);
rnd = mtwist_rand (&mt);
vel = 50.0 + 0.5 * (float) (rnd & 127);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 3, pvel,
vr_data.realtime + 2.0 + ((rnd >> 7) & 31) * 0.02,
224 + ((rnd >> 12) & 7), 0.75, 0.0);
}
}
}
static void
R_TeleportSplash_QF (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, pdir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
VectorCopy (dir, pdir);
VectorNormalize (pdir);
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (pdir, vel, pvel);
particle_new (pt_grav, part_tex_spark, porg, 0.6, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 15) * 0.01),
(7 + ((rnd >> 12) & 7)), 1.0, 0.0);
}
}
}
}
static void
R_RocketTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (1.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (1.5);
dist = (pscale + pscalenext) * 3.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
12 + (mtwist_rand (&mt) & 3),
0.5 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_GrenadeTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 6.0 + qfrandom (7.0);
while (len < maxlen) {
pscalenext = 6.0 + qfrandom (7.0);
dist = (pscale + pscalenext) * 2.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
1 + (mtwist_rand (&mt) & 3),
0.625 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_BloodTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
int j;
vec3_t old_origin, porg, pvel, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 5.0 + qfrandom (10.0);
while (len < maxlen) {
pscalenext = 5.0 + qfrandom (10.0);
dist = (pscale + pscalenext) * 1.5;
for (j = 0; j < 3; j++) {
pvel[j] = qfrandom (24.0) - 12.0;
porg[j] = old_origin[j] + qfrandom (3.0) - 1.5;
}
percent = len * origlen;
pvel[2] -= percent * 40.0;
particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
vr_data.realtime + 2.0 - percent * 2.0,
68 + (mtwist_rand (&mt) & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_SlightBloodTrail_QF (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
int j;
vec3_t old_origin, porg, pvel, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (7.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (7.5);
dist = (pscale + pscalenext) * 1.5;
for (j = 0; j < 3; j++) {
pvel[j] = (qfrandom (12.0) - 6.0);
porg[j] = old_origin[j] + qfrandom (3.0) - 1.5;
}
percent = len * origlen;
pvel[2] -= percent * 40;
particle_new (pt_grav, part_tex_smoke, porg, pscale, pvel,
vr_data.realtime + 1.5 - percent * 1.5,
68 + (mtwist_rand (&mt) & 3), 0.75, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorMultAdd (old_origin, len, vec, old_origin);
pscale = pscalenext;
}
}
static void
R_WizTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_flame, part_tex_smoke, old_origin,
2.0 + qfrandom (1.0) - percent * 2.0, pvel,
vr_data.realtime + 0.5 - percent * 0.5,
52 + (mtwist_rand (&mt) & 4), 1.0 - percent * 0.125, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_FlameTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_flame, part_tex_smoke, old_origin,
2.0 + qfrandom (1.0) - percent * 2.0, pvel,
vr_data.realtime + 0.5 - percent * 0.5, 234,
1.0 - percent * 0.125, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_VoorTrail_QF (const entity_t *ent)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
int j;
vec3_t subtract, old_origin, porg, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
percent = len * origlen;
for (j = 0; j < 3; j++)
porg[j] = old_origin[j] + qfrandom (16.0) - 8.0;
particle_new (pt_static, part_tex_dot, porg, 1.0 + qfrandom (1.0),
vec3_origin, vr_data.realtime + 0.3 - percent * 0.3,
9 * 16 + 8 + (mtwist_rand (&mt) & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_GlowTrail_QF (const entity_t *ent, int glow_color)
{
float maxlen, origlen, percent;
float dist = 3.0, len = 0.0;
int rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
VectorScale (vec, (maxlen - dist), subtract);
while (len < maxlen) {
percent = len * origlen;
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_smoke, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 0.2, glow_color,
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_ParticleExplosion_EE (const vec3_t org)
{
/*
R_NewExplosion (org);
*/
if (numparticles >= r_maxparticles)
return;
particle_new_random (pt_smokecloud, part_tex_smoke, org, 4, 30, 8,
vr_data.realtime + 5.0, mtwist_rand (&mt) & 255,
0.5 + qfrandom (0.25), 0.0);
}
static void
R_TeleportSplash_EE (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
VectorNormalize (dir);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_spark, porg, 0.6, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 15) * 0.01),
qfrandom (1.0), 1.0, 0.0);
}
}
}
}
static void
R_RocketTrail_EE (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 1.5 + qfrandom (1.5);
while (len < maxlen) {
pscalenext = 1.5 + qfrandom (1.5);
dist = (pscale + pscalenext) * 3.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
mtwist_rand (&mt) & 255,
0.5 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorScale (vec, len, subtract);
VectorAdd (old_origin, subtract, old_origin);
pscale = pscalenext;
}
}
static void
R_GrenadeTrail_EE (const entity_t *ent)
{
float dist, maxlen, origlen, percent, pscale, pscalenext;
float len = 0.0;
vec3_t old_origin, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
origlen = vr_data.frametime / maxlen;
pscale = 6.0 + qfrandom (7.0);
while (len < maxlen) {
pscalenext = 6.0 + qfrandom (7.0);
dist = (pscale + pscalenext) * 2.0;
percent = len * origlen;
particle_new (pt_smoke, part_tex_smoke, old_origin,
pscale + percent * 4.0, vec3_origin,
vr_data.realtime + 2.0 - percent * 2.0,
mtwist_rand (&mt) & 255,
0.625 + qfrandom (0.125) - percent * 0.40, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorScale (vec, len, subtract);
VectorAdd (old_origin, subtract, old_origin);
pscale = pscalenext;
}
}
static void
R_ParticleExplosion_ID (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_explode, part_tex_dot, org, 16, 1.0, 256,
vr_data.realtime + 5.0, ramp1[0], 1.0, i & 3);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_explode2, part_tex_dot, org, 16, 1.0, 256,
vr_data.realtime + 5.0, ramp1[0], 1.0, i & 3);
}
}
static void
R_BlobExplosion_ID (const vec3_t org)
{
unsigned int i;
unsigned int j = 1024;
if (numparticles >= r_maxparticles)
return;
else if (numparticles + j >= r_maxparticles)
j = r_maxparticles - numparticles;
for (i = 0; i < j >> 1; i++) {
particle_new_random (pt_blob, part_tex_dot, org, 12, 1.0, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 8) * 0.05,
66 + i % 6, 1.0, 0.0);
}
for (i = 0; i < j / 2; i++) {
particle_new_random (pt_blob2, part_tex_dot, org, 12, 1.0, 256,
vr_data.realtime + 1.0 + (mtwist_rand (&mt) & 8) * 0.05,
150 + i % 6, 1.0, 0.0);
}
}
static inline void // FIXME: inline?
R_RunParticleEffect_ID (const vec3_t org, const vec3_t dir, int color,
int count)
{
float scale;
int i;
vec3_t porg;
if (numparticles >= r_maxparticles)
return;
if (count > 130) // calculate scale before clipping to particle max
scale = 3.0;
else if (count > 20)
scale = 2.0;
else
scale = 1.0;
if (numparticles + count >= r_maxparticles)
count = r_maxparticles - numparticles;
for (i = 0; i < count; i++) {
int rnd = mtwist_rand (&mt);
porg[0] = org[0] + scale * (((rnd >> 3) & 15) - 8);
porg[1] = org[1] + scale * (((rnd >> 7) & 15) - 8);
porg[2] = org[2] + scale * (((rnd >> 11) & 15) - 8);
// Note that ParseParticleEffect handles (dir * 15)
particle_new (pt_grav, part_tex_dot, porg, 1.0, dir,
vr_data.realtime + 0.1 * (i % 5),
(color & ~7) + (rnd & 7), 1.0, 0.0);
}
}
static void
R_BloodPuffEffect_ID (const vec3_t org, int count)
{
R_RunParticleEffect_ID (org, vec3_origin, 73, count);
}
static void
R_GunshotEffect_ID (const vec3_t org, int count)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, count);
}
static void
R_LightningBloodEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 225, 50);
}
static void
R_SpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, 10);
}
static void
R_SuperSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 0, 20);
}
static void
R_KnightSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 226, 20);
}
static void
R_WizSpikeEffect_ID (const vec3_t org)
{
R_RunParticleEffect_ID (org, vec3_origin, 20, 30);
}
static void
R_LavaSplash_ID (const vec3_t org)
{
float vel;
int rnd, i, j;
int k = 256;
vec3_t dir, porg, pvel;
if (numparticles + k >= r_maxparticles) {
return;
} // else if (numparticles + k >= r_maxparticles) {
// k = r_maxparticles - numparticles;
// }
dir[2] = 256;
for (i = -128; i < 128; i += 16) {
for (j = -128; j < 128; j += 16) {
rnd = mtwist_rand (&mt);
dir[0] = j + (rnd & 7);
dir[1] = i + ((rnd >> 6) & 7);
porg[0] = org[0] + dir[0];
porg[1] = org[1] + dir[1];
porg[2] = org[2] + ((rnd >> 9) & 63);
VectorNormalize (dir);
rnd = mtwist_rand (&mt);
vel = 50 + (rnd & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 1.0, pvel,
vr_data.realtime + 2 + ((rnd >> 7) & 31) * 0.02,
224 + ((rnd >> 12) & 7), 1.0, 0.0);
}
}
}
static void
R_TeleportSplash_ID (const vec3_t org)
{
float vel;
int rnd, i, j, k;
int l = 896;
vec3_t dir, pdir, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
for (k = -24; k < 32; k += 4) {
dir[2] = k * 8;
for (i = -16; i < 16; i += 4) {
dir[1] = i * 8;
for (j = -16; j < 16; j += 4) {
dir[0] = j * 8;
VectorCopy (dir, pdir);
VectorNormalize (pdir);
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + (rnd & 3);
porg[1] = org[1] + j + ((rnd >> 2) & 3);
porg[2] = org[2] + k + ((rnd >> 4) & 3);
vel = 50 + ((rnd >> 6) & 63);
VectorScale (pdir, vel, pvel);
particle_new (pt_grav, part_tex_dot, porg, 1.0, pvel,
(vr_data.realtime + 0.2 + (mtwist_rand (&mt) & 7) * 0.02),
(7 + ((rnd >> 12) & 7)), 1.0, 0.0);
}
}
}
}
static void
R_DarkFieldParticles_ID (const entity_t *ent)
{
int i, j, k, l = 64;
unsigned int rnd;
float vel;
vec3_t dir, org, porg, pvel;
if (numparticles + l >= r_maxparticles) {
return;
} // else if (numparticles + l >= r_maxparticles) {
// l = r_maxparticles - numparticles;
// }
VectorCopy (ent->origin, org);
for (i = -16; i < 16; i += 8) {
dir [1] = i * 8;
for (j = -16; j < 16; j += 8) {
dir [0] = j * 8;
for (k = 0; k < 32; k += 8) {
dir [2] = k * 8;
rnd = mtwist_rand (&mt);
porg[0] = org[0] + i + ((rnd >> 3) & 3);
porg[1] = org[1] + j + ((rnd >> 5) & 3);
porg[2] = org[2] + k + ((rnd >> 7) & 3);
VectorNormalize (dir);
vel = 50 + ((rnd >> 9) & 63);
VectorScale (dir, vel, pvel);
particle_new (pt_slowgrav, part_tex_dot, porg, 1.5, pvel,
(vr_data.realtime + 0.2 + (rnd & 7) * 0.02),
(150 + mtwist_rand (&mt) % 6), 1.0, 0.0);
}
}
}
}
static vec3_t avelocities[NUMVERTEXNORMALS];
static void
R_EntityParticles_ID (const entity_t *ent)
{
int i, j = NUMVERTEXNORMALS;
float angle, sp, sy, cp, cy; // cr, sr
float beamlength = 16.0, dist = 64.0;
vec3_t forward, porg;
if (numparticles + j >= r_maxparticles) {
return;
} else if (numparticles + j >= r_maxparticles) {
j = r_maxparticles - numparticles;
}
for (i = 0; i < NUMVERTEXNORMALS; i++) {
int k;
for (k = 0; k < 3; k++) {
avelocities[i][k] = (mtwist_rand (&mt) & 255) * 0.01;
}
}
for (i = 0; i < j; i++) {
angle = vr_data.realtime * avelocities[i][0];
cy = cos (angle);
sy = sin (angle);
angle = vr_data.realtime * avelocities[i][1];
cp = cos (angle);
sp = sin (angle);
// Next 3 lines results aren't currently used, may be in future. --Despair
// angle = vr_data.realtime * avelocities[i][2];
// sr = sin (angle);
// cr = cos (angle);
forward[0] = cp * cy;
forward[1] = cp * sy;
forward[2] = -sp;
porg[0] = ent->origin[0] + vertex_normals[i][0] * dist +
forward[0] * beamlength;
porg[1] = ent->origin[1] + vertex_normals[i][1] * dist +
forward[1] * beamlength;
porg[2] = ent->origin[2] + vertex_normals[i][2] * dist +
forward[2] * beamlength;
particle_new (pt_explode, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 0.01, 0x6f, 1.0, 0);
}
}
static void
R_RocketTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
int ramp, rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, (maxlen - dist), subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
ramp = rnd & 3;
particle_new (pt_fire, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0, ramp3[ramp], 1.0, ramp);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_GrenadeTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int ramp, rnd;
vec3_t old_origin, org, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, ent->old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
org[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
org[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
org[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
ramp = (rnd & 3) + 2;
particle_new (pt_fire, part_tex_dot, org, 1.0, vec3_origin,
vr_data.realtime + 2.0, ramp3[ramp], 1.0, ramp);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_BloodTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, subtract, vec, porg;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
porg[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
porg[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_grav, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 2.0, 67 + (rnd & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_SlightBloodTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 6.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, porg, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 12) & 7) * (5.0/7.0) - 2.5;
porg[1] = old_origin[1] + ((rnd >> 9) & 7) * (5.0/7.0) - 2.5;
porg[2] = old_origin[2] + ((rnd >> 6) & 7) * (5.0/7.0) - 2.5;
particle_new (pt_grav, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 1.5, 67 + (rnd & 3), 1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_WizTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_static, part_tex_dot, old_origin, 1.0, pvel,
vr_data.realtime + 0.5, 52 + ((tracercount & 4) << 1),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_FlameTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
static int tracercount;
vec3_t old_origin, pvel, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
tracercount++;
if (tracercount & 1) {
pvel[0] = 30.0 * vec[1];
pvel[1] = 30.0 * -vec[0];
} else {
pvel[0] = 30.0 * -vec[1];
pvel[1] = 30.0 * vec[0];
}
pvel[2] = 0.0;
particle_new (pt_static, part_tex_dot, old_origin, 1.0, pvel,
vr_data.realtime + 0.5, 230 + ((tracercount & 4) << 1),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
R_VoorTrail_ID (const entity_t *ent)
{
float maxlen;
float dist = 3.0, len = 0.0;
unsigned int rnd;
vec3_t old_origin, porg, subtract, vec;
if (numparticles >= r_maxparticles)
return;
VectorCopy (ent->old_origin, old_origin);
VectorSubtract (ent->origin, old_origin, vec);
maxlen = VectorNormalize (vec);
VectorScale (vec, maxlen - dist, subtract);
while (len < maxlen) {
rnd = mtwist_rand (&mt);
porg[0] = old_origin[0] + ((rnd >> 3) & 15) - 7.5;
porg[1] = old_origin[1] + ((rnd >> 7) & 15) - 7.5;
porg[2] = old_origin[2] + ((rnd >> 11) & 15) - 7.5;
particle_new (pt_static, part_tex_dot, porg, 1.0, vec3_origin,
vr_data.realtime + 0.3, 9 * 16 + 8 + (rnd & 3),
1.0, 0.0);
if (numparticles >= r_maxparticles)
break;
len += dist;
VectorAdd (old_origin, subtract, old_origin);
}
}
static void
draw_qf_particles (void)
{
byte *at;
int activeparticles, maxparticle, j, vacount;
unsigned k;
float minparticledist, scale;
particle_t *part;
vec3_t up_scale, right_scale, up_right_scale, down_right_scale;
partvert_t *VA;
mat4_t vp_mat;
quat_t fog;
Mat4Mult (glsl_projection, glsl_view, vp_mat);
qfeglDepthMask (GL_FALSE);
qfeglUseProgram (quake_part.program);
qfeglEnableVertexAttribArray (quake_part.vertex.location);
qfeglEnableVertexAttribArray (quake_part.color.location);
qfeglEnableVertexAttribArray (quake_part.st.location);
glsl_Fog_GetColor (fog);
fog[3] = glsl_Fog_GetDensity () / 64.0;
qfeglUniform4fv (quake_part.fog.location, 1, fog);
qfeglUniformMatrix4fv (quake_part.mvp_matrix.location, 1, false, vp_mat);
qfeglUniform1i (quake_part.texture.location, 0);
qfeglActiveTexture (GL_TEXTURE0 + 0);
qfeglEnable (GL_TEXTURE_2D);
qfeglBindTexture (GL_TEXTURE_2D, part_tex);
// LordHavoc: particles should not affect zbuffer
qfeglDepthMask (GL_FALSE);
minparticledist = DotProduct (r_refdef.vieworg, vpn) +
r_particles_nearclip->value;
activeparticles = 0;
vacount = 0;
VA = particleVertexArray;
maxparticle = -1;
j = 0;
for (k = 0, part = particles; k < numparticles; k++, part++) {
// Don't render particles too close to us.
// Note, we must still do physics and such on them.
if (!(DotProduct (part->org, vpn) < minparticledist)) {
at = (byte *) &d_8to24table[(byte) part->color];
VA[0].color[0] = at[0];
VA[0].color[1] = at[1];
VA[0].color[2] = at[2];
VA[0].color[3] = part->alpha * 255;
memcpy (VA[1].color, VA[0].color, sizeof (VA[0].color));
memcpy (VA[2].color, VA[0].color, sizeof (VA[0].color));
memcpy (VA[3].color, VA[0].color, sizeof (VA[0].color));
switch (part->tex) {
case part_tex_dot:
VA[0].texcoord[0] = 0.0;
VA[0].texcoord[1] = 0.0;
VA[1].texcoord[0] = 0.5;
VA[1].texcoord[1] = 0.0;
VA[2].texcoord[0] = 0.5;
VA[2].texcoord[1] = 0.5;
VA[3].texcoord[0] = 0.0;
VA[3].texcoord[1] = 0.5;
break;
case part_tex_spark:
VA[0].texcoord[0] = 0.5;
VA[0].texcoord[1] = 0.0;
VA[1].texcoord[0] = 1.0;
VA[1].texcoord[1] = 0.0;
VA[2].texcoord[0] = 1.0;
VA[2].texcoord[1] = 0.5;
VA[3].texcoord[0] = 0.5;
VA[3].texcoord[1] = 0.5;
break;
case part_tex_smoke:
VA[0].texcoord[0] = 0.0;
VA[0].texcoord[1] = 0.5;
VA[1].texcoord[0] = 0.5;
VA[1].texcoord[1] = 0.5;
VA[2].texcoord[0] = 0.5;
VA[2].texcoord[1] = 1.0;
VA[3].texcoord[0] = 0.0;
VA[3].texcoord[1] = 1.0;
break;
}
scale = part->scale;
VectorScale (vup, scale, up_scale);
VectorScale (vright, scale, right_scale);
VectorAdd (right_scale, up_scale, up_right_scale);
VectorSubtract (right_scale, up_scale, down_right_scale);
VectorAdd (part->org, down_right_scale, VA[0].vertex);
VectorSubtract (part->org, up_right_scale, VA[1].vertex);
VectorSubtract (part->org, down_right_scale, VA[2].vertex);
VectorAdd (part->org, up_right_scale, VA[3].vertex);
VA += 4;
vacount += 6;
}
part->phys (part);
// LordHavoc: immediate removal of unnecessary particles (must be done
// to ensure compactor below operates properly in all cases)
if (part->die < vr_data.realtime) {
freeparticles[j++] = part;
} else {
maxparticle = k;
activeparticles++;
}
}
qfeglVertexAttribPointer (quake_part.vertex.location, 3, GL_FLOAT,
0, sizeof (partvert_t),
&particleVertexArray[0].vertex);
qfeglVertexAttribPointer (quake_part.color.location, 4, GL_UNSIGNED_BYTE,
1, sizeof (partvert_t),
&particleVertexArray[0].color);
qfeglVertexAttribPointer (quake_part.st.location, 2, GL_FLOAT,
0, sizeof (partvert_t),
&particleVertexArray[0].texcoord);
qfeglDrawElements (GL_TRIANGLES, vacount, GL_UNSIGNED_SHORT, pVAindices);
k = 0;
while (maxparticle >= activeparticles) {
*freeparticles[k++] = particles[maxparticle--];
while (maxparticle >= activeparticles &&
particles[maxparticle].die <= vr_data.realtime)
maxparticle--;
}
numparticles = activeparticles;
qfeglDepthMask (GL_TRUE);
qfeglDisableVertexAttribArray (quake_part.vertex.location);
qfeglDisableVertexAttribArray (quake_part.color.location);
qfeglDisableVertexAttribArray (quake_part.st.location);
qfeglActiveTexture (GL_TEXTURE0 + 0);
qfeglDisable (GL_TEXTURE_2D);
}
static void
draw_id_particles (void)
{
int activeparticles, maxparticle, j, vacount;
unsigned k;
float minparticledist;
particle_t *part;
partvert_t *VA;
mat4_t vp_mat;
quat_t fog;
Mat4Mult (glsl_projection, glsl_view, vp_mat);
// LordHavoc: particles should not affect zbuffer
qfeglDepthMask (GL_FALSE);
qfeglUseProgram (quake_point.program);
qfeglEnableVertexAttribArray (quake_point.vertex.location);
qfeglEnableVertexAttribArray (quake_point.color.location);
qfeglUniformMatrix4fv (quake_point.mvp_matrix.location, 1, false, vp_mat);
glsl_Fog_GetColor (fog);
fog[3] = glsl_Fog_GetDensity () / 64.0;
qfeglUniform4fv (quake_point.fog.location, 1, fog);
qfeglUniform1i (quake_point.palette.location, 0);
qfeglActiveTexture (GL_TEXTURE0 + 0);
qfeglEnable (GL_TEXTURE_2D);
qfeglBindTexture (GL_TEXTURE_2D, glsl_palette);
minparticledist = DotProduct (r_refdef.vieworg, vpn) +
r_particles_nearclip->value;
activeparticles = 0;
vacount = 0;
VA = particleVertexArray;
maxparticle = -1;
j = 0;
for (k = 0, part = particles; k < numparticles; k++, part++) {
// Don't render particles too close to us.
// Note, we must still do physics and such on them.
if (!(DotProduct (part->org, vpn) < minparticledist)) {
VA[0].color[0] = (byte) part->color;
VectorCopy (part->org, VA[0].vertex);
VA++;
vacount++;
}
part->phys (part);
// LordHavoc: immediate removal of unnecessary particles (must be done
// to ensure compactor below operates properly in all cases)
if (part->die < vr_data.realtime) {
freeparticles[j++] = part;
} else {
maxparticle = k;
activeparticles++;
}
}
qfeglVertexAttribPointer (quake_point.vertex.location, 3, GL_FLOAT,
0, sizeof (partvert_t),
&particleVertexArray[0].vertex);
qfeglVertexAttribPointer (quake_point.color.location, 1, GL_UNSIGNED_BYTE,
1, sizeof (partvert_t),
&particleVertexArray[0].color);
qfeglDrawArrays (GL_POINTS, 0, vacount);
k = 0;
while (maxparticle >= activeparticles) {
*freeparticles[k++] = particles[maxparticle--];
while (maxparticle >= activeparticles &&
particles[maxparticle].die <= vr_data.realtime)
maxparticle--;
}
numparticles = activeparticles;
qfeglDepthMask (GL_TRUE);
qfeglDisableVertexAttribArray (quake_point.vertex.location);
qfeglDisableVertexAttribArray (quake_point.color.location);
qfeglActiveTexture (GL_TEXTURE0 + 0);
qfeglDisable (GL_TEXTURE_2D);
}
void
glsl_R_DrawParticles (void)
{
if (!r_particles->int_val || !numparticles)
return;
if (r_particles_style->int_val) {
draw_qf_particles ();
} else {
draw_id_particles ();
}
}
static void
glsl_R_Particle_New (ptype_t type, int texnum, const vec3_t org, float scale,
const vec3_t vel, float die, int color, float alpha,
float ramp)
{
if (numparticles >= r_maxparticles)
return;
particle_new (type, texnum, org, scale, vel, die, color, alpha, ramp);
}
static void
glsl_R_Particle_NewRandom (ptype_t type, int texnum, const vec3_t org,
int org_fuzz, float scale, int vel_fuzz, float die,
int color, float alpha, float ramp)
{
if (numparticles >= r_maxparticles)
return;
particle_new_random (type, texnum, org, org_fuzz, scale, vel_fuzz, die,
color, alpha, ramp);
}
static vid_particle_funcs_t particles_QF = {
R_RocketTrail_QF,
R_GrenadeTrail_QF,
R_BloodTrail_QF,
R_SlightBloodTrail_QF,
R_WizTrail_QF,
R_FlameTrail_QF,
R_VoorTrail_QF,
R_GlowTrail_QF,
R_RunParticleEffect_QF,
R_BloodPuffEffect_QF,
R_GunshotEffect_QF,
R_LightningBloodEffect_QF,
R_SpikeEffect_QF,
R_KnightSpikeEffect_QF,
R_SuperSpikeEffect_QF,
R_WizSpikeEffect_QF,
R_BlobExplosion_QF,
R_ParticleExplosion_QF,
R_ParticleExplosion2_QF,
R_LavaSplash_QF,
R_TeleportSplash_QF,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_ID = {
R_RocketTrail_ID,
R_GrenadeTrail_ID,
R_BloodTrail_ID,
R_SlightBloodTrail_ID,
R_WizTrail_ID,
R_FlameTrail_ID,
R_VoorTrail_ID,
R_GlowTrail_QF,
R_RunParticleEffect_ID,
R_BloodPuffEffect_ID,
R_GunshotEffect_ID,
R_LightningBloodEffect_ID,
R_SpikeEffect_ID,
R_KnightSpikeEffect_ID,
R_SuperSpikeEffect_ID,
R_WizSpikeEffect_ID,
R_BlobExplosion_ID,
R_ParticleExplosion_ID,
R_ParticleExplosion2_QF,
R_LavaSplash_ID,
R_TeleportSplash_ID,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_QF_egg = {
R_RocketTrail_EE,
R_GrenadeTrail_EE,
R_BloodTrail_QF,
R_SlightBloodTrail_QF,
R_WizTrail_QF,
R_FlameTrail_QF,
R_VoorTrail_QF,
R_GlowTrail_QF,
R_RunParticleEffect_QF,
R_BloodPuffEffect_QF,
R_GunshotEffect_QF,
R_LightningBloodEffect_QF,
R_SpikeEffect_QF,
R_KnightSpikeEffect_QF,
R_SuperSpikeEffect_QF,
R_WizSpikeEffect_QF,
R_BlobExplosion_QF,
R_ParticleExplosion_EE,
R_ParticleExplosion2_QF,
R_LavaSplash_QF,
R_TeleportSplash_EE,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
static vid_particle_funcs_t particles_ID_egg = {
R_RocketTrail_EE,
R_GrenadeTrail_EE,
R_BloodTrail_ID,
R_SlightBloodTrail_ID,
R_WizTrail_ID,
R_FlameTrail_ID,
R_VoorTrail_ID,
R_GlowTrail_QF,
R_RunParticleEffect_ID,
R_BloodPuffEffect_ID,
R_GunshotEffect_ID,
R_LightningBloodEffect_ID,
R_SpikeEffect_ID,
R_KnightSpikeEffect_ID,
R_SuperSpikeEffect_ID,
R_WizSpikeEffect_ID,
R_BlobExplosion_ID,
R_ParticleExplosion_EE,
R_ParticleExplosion2_QF,
R_LavaSplash_ID,
R_TeleportSplash_EE,
R_DarkFieldParticles_ID,
R_EntityParticles_ID,
R_Particle_New,
R_Particle_NewRandom,
};
void
glsl_r_easter_eggs_f (cvar_t *var)
{
if (easter_eggs) {
if (easter_eggs->int_val) {
if (r_particles_style->int_val) {
glsl_vid_render_funcs.particles = &particles_QF_egg;
} else {
glsl_vid_render_funcs.particles = &particles_ID_egg;
}
} else if (r_particles_style) {
if (r_particles_style->int_val) {
glsl_vid_render_funcs.particles = &particles_QF;
} else {
glsl_vid_render_funcs.particles = &particles_ID;
}
}
}
}
void
glsl_r_particles_style_f (cvar_t *var)
{
glsl_r_easter_eggs_f (easter_eggs);
}
static void
R_ParticleFunctionInit (void)
{
glsl_r_particles_style_f (r_particles_style);
glsl_r_easter_eggs_f (easter_eggs);
}
static void
r_particles_nearclip_f (cvar_t *var)
{
Cvar_SetValue (r_particles_nearclip, bound (r_nearclip->value, var->value,
r_farclip->value));
}
static void
r_particles_f (cvar_t *var)
{
R_MaxParticlesCheck (var, r_particles_max);
}
static void
r_particles_max_f (cvar_t *var)
{
R_MaxParticlesCheck (r_particles, var);
}
void
glsl_R_Particles_Init_Cvars (void)
{
easter_eggs = Cvar_Get ("easter_eggs", "0", CVAR_NONE, r_easter_eggs_f,
"Enables easter eggs.");
r_particles = Cvar_Get ("r_particles", "1", CVAR_ARCHIVE, r_particles_f,
"Toggles drawing of particles.");
r_particles_max = Cvar_Get ("r_particles_max", "2048", CVAR_ARCHIVE,
r_particles_max_f, "Maximum amount of "
"particles to display. No maximum, minimum "
"is 0.");
r_particles_nearclip = Cvar_Get ("r_particles_nearclip", "32",
CVAR_ARCHIVE, r_particles_nearclip_f,
"Distance of the particle near clipping "
"plane from the player.");
r_particles_style = Cvar_Get ("r_particles_style", "1", CVAR_ARCHIVE,
r_particles_style_f, "Sets particle style. "
"0 for Id, 1 for QF.");
R_ParticleFunctionInit ();
}
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