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Speedup when r_waterripple = 0, and small speedup to texture coordinate calculation.

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Ragnvald Maartmann-Moe IV 2002-07-25 14:01:36 +00:00
parent 2f57f95783
commit 4ed68266ea
1 changed files with 14 additions and 8 deletions
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22
libs/video/renderer/gl/gl_warp.c
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@ -43,7 +43,6 @@ static const char rcsid[] =
msurface_t *warpface;
void
BoundPoly (int numverts, float *verts, vec3_t mins, vec3_t maxs)
{
@ -177,6 +176,7 @@ float turbsin[] = {
};
#define TURBSCALE (256.0 / (2 * M_PI))
#define TURBFRAC (32.0 / (2 * M_PI)) // an 8th of TURBSCALE
/*
EmitWaterPolys
@ -186,24 +186,30 @@ float turbsin[] = {
void
EmitWaterPolys (msurface_t *fa)
{
float os, ot, s, t;
float os, ot, s, t, timetemp;
float *v;
int i;
glpoly_t *p;
vec3_t nv;
timetemp = r_realtime * TURBSCALE;
for (p = fa->polys; p; p = p->next) {
qfglBegin (GL_POLYGON);
for (i = 0, v = p->verts[0]; i < p->numverts; i++, v += VERTEXSIZE) {
os = turbsin[(int) ((v[3] * 0.125 + r_realtime) * TURBSCALE) & 255];
ot = turbsin[(int) ((v[4] * 0.125 + r_realtime) * TURBSCALE) & 255];
os = turbsin[(int) (v[3] * TURBFRAC + timetemp) & 255];
ot = turbsin[(int) (v[4] * TURBFRAC + timetemp) & 255];
s = (v[3] + ot) * (1.0 / 64.0);
t = (v[4] + os) * (1.0 / 64.0);
qfglTexCoord2f (s, t);
VectorCopy (v, nv);
nv[2] += r_waterripple->value * os * ot * (1.0 / 64.0);
qfglVertex3fv (nv);
if (r_waterripple->value != 0) {
vec3_t nv;
VectorCopy (v, nv);
nv[2] += r_waterripple->value * os * ot * (1.0 / 64.0);
qfglVertex3fv (nv);
} else
qfglVertex3fv (v);
}
qfglEnd ();
}