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Optimize some redundant math out of the particle aging loop.

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Ragnvald Maartmann-Moe IV 2001-11-02 21:12:09 +00:00
parent 3958b4a4b3
commit 08a211385f
1 changed files with 25 additions and 13 deletions
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38
libs/video/renderer/gl/gl_dyn_part.c
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@ -678,7 +678,11 @@ R_DrawParticles (void)
{
byte i;
unsigned char *at;
float dvel, grav, fast_grav, minparticledist, scale;
float dvel, grav, fast_grav, minparticledist, scale,
bloodcloud_alpha, bloodcloud_scale, fallfadespark_alpha,
fire_alpha, fire_scale, smoke_alpha, smoke_scale,
smokecloud_alpha, smokecloud_org, smokecloud_scale;
int activeparticles, maxparticle, j, k;
particle_t *part;
vec3_t up_scale, right_scale, up_right_scale, down_right_scale;
@ -695,7 +699,15 @@ R_DrawParticles (void)
varray[3].texcoord[0] = 1; varray[3].texcoord[1] = 1;
grav = (fast_grav = r_frametime * 800) * 0.05;
dvel = 4 * r_frametime;
dvel = bloodcloud_scale = smoke_scale = r_frametime * 4;
smoke_alpha = r_frametime * 100;
smokecloud_alpha = r_frametime * 140;
smokecloud_scale = r_frametime * 50;
smokecloud_org = r_frametime * 30;
bloodcloud_alpha = r_frametime * 65;
fallfadespark_alpha = r_frametime * 256;
fire_alpha = r_frametime * 32;
fire_scale = r_frametime * 2;
minparticledist = DotProduct (r_refdef.vieworg, vpn) + 32.0f;
@ -765,38 +777,38 @@ R_DrawParticles (void)
part->vel[2] -= grav;
break;
case pt_smoke:
if ((part->alpha -= r_frametime * 100) < 1)
if ((part->alpha -= smoke_alpha) < 1)
part->die = -1;
part->scale += r_frametime * 4;
// part->org[2] += r_frametime * 30 - grav;
part->scale += smoke_scale;
// part->org[2] += smokecloud_org - grav;
break;
case pt_smokecloud:
if ((part->alpha -= r_frametime * 140) < 1)
if ((part->alpha -= smokecloud_alpha) < 1)
{
part->die = -1;
break;
}
part->scale += r_frametime * 50;
part->org[2] += r_frametime * 30;
part->scale += smokecloud_scale;
part->org[2] += smokecloud_org;
break;
case pt_bloodcloud:
if ((part->alpha -= r_frametime * 65) < 1)
if ((part->alpha -= bloodcloud_alpha) < 1)
{
part->die = -1;
break;
}
part->scale += r_frametime * 4;
part->scale += bloodcloud_scale;
part->vel[2] -= grav;
break;
case pt_fallfadespark:
if ((part->alpha -= r_frametime * 256) < 1)
if ((part->alpha -= fallfadespark_alpha) < 1)
part->die = -1;
part->vel[2] -= fast_grav;
break;
case pt_fire:
if ((part->alpha -= r_frametime * 32) < 1)
if ((part->alpha -= fire_alpha) < 1)
part->die = -1;
part->scale -= r_frametime * 2;
part->scale -= fire_scale;
break;
default:
Con_DPrintf ("unhandled particle type %d\n", part->type);