void V_CalcViewBlend(void)
{
float a2;
int j;
r_refdef.viewblend[0] = 0;
r_refdef.viewblend[1] = 0;
r_refdef.viewblend[2] = 0;
r_refdef.viewblend[3] = 0;
r_refdef.frustumscale_x = 1;
r_refdef.frustumscale_y = 1;
if (cls.state == ca_connected && cls.signon == SIGNONS)
{
// set contents color
int supercontents;
vec3_t vieworigin;
Matrix4x4_OriginFromMatrix(&r_refdef.view.matrix, vieworigin);
supercontents = CL_PointSuperContents(vieworigin);
if (supercontents & SUPERCONTENTS_LIQUIDSMASK)
{
r_refdef.frustumscale_x *= 1 - (((sin(cl.time * 4.7) + 1) * 0.015) * r_waterwarp.value);
r_refdef.frustumscale_y *= 1 - (((sin(cl.time * 3.0) + 1) * 0.015) * r_waterwarp.value);
if (supercontents & SUPERCONTENTS_LAVA)
{
cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 255;
cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
}
else if (supercontents & SUPERCONTENTS_SLIME)
{
cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 25;
cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 5;
}
else
{
cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 130;
cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 50;
}
cl.cshifts[CSHIFT_CONTENTS].percent = 150 * 0.5;
}
else
{
cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 0;
cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
cl.cshifts[CSHIFT_CONTENTS].percent = 0;
}
if (gamemode != GAME_TRANSFUSION)
{
if (cl.stats[STAT_ITEMS] & IT_QUAD)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else if (cl.stats[STAT_ITEMS] & IT_SUIT)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 20;
}
else if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
cl.cshifts[CSHIFT_POWERUP].percent = 100;
}
else if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else
cl.cshifts[CSHIFT_POWERUP].percent = 0;
}
cl.cshifts[CSHIFT_VCSHIFT].destcolor[0] = v_cshift.destcolor[0];
cl.cshifts[CSHIFT_VCSHIFT].destcolor[1] = v_cshift.destcolor[1];
cl.cshifts[CSHIFT_VCSHIFT].destcolor[2] = v_cshift.destcolor[2];
cl.cshifts[CSHIFT_VCSHIFT].percent = v_cshift.percent;
// LordHavoc: fixed V_CalcBlend
for (j = 0;j < NUM_CSHIFTS;j++)
{
a2 = bound(0.0f, cl.cshifts[j].percent * (1.0f / 255.0f), 1.0f);
if (a2 > 0)
{
VectorLerp(r_refdef.viewblend, a2, cl.cshifts[j].destcolor, r_refdef.viewblend);
r_refdef.viewblend[3] = (1 - (1 - r_refdef.viewblend[3]) * (1 - a2)); // correct alpha multiply... took a while to find it on the web
}
}
// saturate color (to avoid blending in black)
if (r_refdef.viewblend[3])
{
a2 = 1 / r_refdef.viewblend[3];
VectorScale(r_refdef.viewblend, a2, r_refdef.viewblend);
}
r_refdef.viewblend[0] = bound(0.0f, r_refdef.viewblend[0], 255.0f);
r_refdef.viewblend[1] = bound(0.0f, r_refdef.viewblend[1], 255.0f);
r_refdef.viewblend[2] = bound(0.0f, r_refdef.viewblend[2], 255.0f);
r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3] * gl_polyblend.value, 1.0f);
if (vid.sRGB3D)
{
r_refdef.viewblend[0] = Image_LinearFloatFromsRGB(r_refdef.viewblend[0]);
r_refdef.viewblend[1] = Image_LinearFloatFromsRGB(r_refdef.viewblend[1]);
r_refdef.viewblend[2] = Image_LinearFloatFromsRGB(r_refdef.viewblend[2]);
}
else
{
r_refdef.viewblend[0] *= (1.0f/256.0f);
r_refdef.viewblend[1] *= (1.0f/256.0f);
r_refdef.viewblend[2] *= (1.0f/256.0f);
}
// Samual: Ugly hack, I know. But it's the best we can do since
// there is no way to detect client states from the engine.
if (cl.stats[STAT_HEALTH] <= 0 && cl.stats[STAT_HEALTH] != -666 &&
cl.stats[STAT_HEALTH] != -2342 && cl_deathfade.value > 0)
{
cl.deathfade += cl_deathfade.value * max(0.00001, cl.time - cl.oldtime);
cl.deathfade = bound(0.0f, cl.deathfade, 0.9f);
}
else
cl.deathfade = 0.0f;
if(cl.deathfade > 0)
{
float a;
float deathfadevec[3] = {0.3f, 0.0f, 0.0f};
a = r_refdef.viewblend[3] + cl.deathfade - r_refdef.viewblend[3]*cl.deathfade;
if(a > 0)
VectorMAM(r_refdef.viewblend[3] * (1 - cl.deathfade) / a, r_refdef.viewblend, cl.deathfade / a, deathfadevec, r_refdef.viewblend);
r_refdef.viewblend[3] = a;
}
}
}
void CL_Beam_AddPolygons(const beam_t *b)
{
vec3_t beamdir, right, up, offset, start, end;
vec_t beamscroll = r_refdef.scene.time * -r_lightningbeam_scroll.value;
vec_t beamrepeatscale = 1.0f / r_lightningbeam_repeatdistance.value;
float length, t1, t2;
dp_model_t *mod;
msurface_t *surf;
if (r_lightningbeam_qmbtexture.integer && cl_beams_externaltexture.currentskinframe == NULL)
CL_Beams_SetupExternalTexture();
if (!r_lightningbeam_qmbtexture.integer && cl_beams_builtintexture.currentskinframe == NULL)
CL_Beams_SetupBuiltinTexture();
// calculate beam direction (beamdir) vector and beam length
// get difference vector
CL_Beam_CalculatePositions(b, start, end);
VectorSubtract(end, start, beamdir);
// find length of difference vector
length = sqrt(DotProduct(beamdir, beamdir));
// calculate scale to make beamdir a unit vector (normalized)
t1 = 1.0f / length;
// scale beamdir so it is now normalized
VectorScale(beamdir, t1, beamdir);
// calculate up vector such that it points toward viewer, and rotates around the beamdir
// get direction from start of beam to viewer
VectorSubtract(r_refdef.view.origin, start, up);
// remove the portion of the vector that moves along the beam
// (this leaves only a vector pointing directly away from the beam)
t1 = -DotProduct(up, beamdir);
VectorMA(up, t1, beamdir, up);
// generate right vector from forward and up, the result is unnormalized
CrossProduct(beamdir, up, right);
// now normalize the right vector and up vector
VectorNormalize(right);
VectorNormalize(up);
// calculate T coordinate scrolling (start and end texcoord along the beam)
t1 = beamscroll;
t1 = t1 - (int)t1;
t2 = t1 + beamrepeatscale * length;
// the beam is 3 polygons in this configuration:
// * 2
// * *
// 1*****
// * *
// * 3
// they are showing different portions of the beam texture, creating an
// illusion of a beam that appears to curl around in 3D space
// (and realize that the whole polygon assembly orients itself to face
// the viewer)
mod = &cl_meshentitymodels[MESH_PARTICLES];
surf = Mod_Mesh_AddSurface(mod, r_lightningbeam_qmbtexture.integer ? &cl_beams_externaltexture : &cl_beams_builtintexture, false);
// polygon 1
VectorM(r_lightningbeam_thickness.value, right, offset);
CL_Beam_AddQuad(mod, surf, start, end, offset, t1, t2);
// polygon 2
VectorMAM(r_lightningbeam_thickness.value * 0.70710681f, right, r_lightningbeam_thickness.value * 0.70710681f, up, offset);
CL_Beam_AddQuad(mod, surf, start, end, offset, t1 + 0.33f, t2 + 0.33f);
// polygon 3
VectorMAM(r_lightningbeam_thickness.value * 0.70710681f, right, r_lightningbeam_thickness.value * -0.70710681f, up, offset);
CL_Beam_AddQuad(mod, surf, start, end, offset, t1 + 0.66f, t2 + 0.66f);
}
