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point_spotlight: Optimize viewing angle alpha code a little bit

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This commit is contained in:
Marco Cawthorne 2023-09-13 12:28:58 -07:00
parent 578a3038d0
commit 9d29ad6635
Signed by: eukara
GPG key ID: CE2032F0A2882A22
1 changed files with 60 additions and 33 deletions
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93
src/gs-entbase/shared/point_spotlight.qc
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@ -66,6 +66,8 @@ public:
virtual void ReceiveEntity(float,float);
virtual float predraw(void);
nonvirtual void UpdateBeamLength(void);
nonvirtual float BeamViewDelta(vector);
nonvirtual float FlareViewDelta(float, vector);
#else
virtual void Trigger(entity, triggermode_t);
virtual void Respawn(void);
@ -87,6 +89,39 @@ point_spotlight::UpdateBeamLength(void)
m_vecBeamEnd = origin + v_forward * m_flBeamTrace;
}
float
point_spotlight::BeamViewDelta(vector cameraAngle)
{
vector v;
float upDelta;
float forwardDelta;
/* depending on whether we're looking 'up' at the spotlight,
we'll adjust the delta to reflect that */
v = normalize(origin - m_vecBeamEnd);
makevectors(cameraAngle);
upDelta = (v * v_up);
forwardDelta = (v * v_forward);
//NSLog("forwardDelta: %f\n", forwardDelta);
//NSLog("upDelta: %f (%f)\n", upDelta, 1.0 - upDelta);
if (forwardDelta < 0.0)
return upDelta * (1.0 - forwardDelta);
if (upDelta >= 0.0)
return upDelta;
else
return 0.0f;
}
float
point_spotlight::FlareViewDelta(float beamDelta, vector cameraAngle)
{
return 1.0 - beamDelta;
}
float
point_spotlight::predraw(void)
{
@ -98,40 +133,13 @@ point_spotlight::predraw(void)
{
vector vecPlayer = g_view.GetCameraOrigin();
vector vecAngle = g_view.GetCameraAngle();
float coneAlpha = 1.0f;
float coneAlpha = BeamViewDelta(vecAngle);
/* corona */
if (vecAngle[0] < 0)
coneAlpha = bound(0.0, fabs(vecAngle[0]) / 60.0f, 1.0);
else
coneAlpha = 0.0f;
if (coneAlpha > 0.0) {
vector flareOrg = origin;
makevectors(vectoangles(origin - vecPlayer));
flareOrg += v_forward * - 32.0f;
R_BeginPolygon("textures/sfx/spot_flare");
R_PolygonVertex(flareOrg + v_right * m_flBeamHalfwidth - v_up * m_flBeamHalfwidth,
[1,1], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg - v_right * m_flBeamHalfwidth - v_up * m_flBeamHalfwidth,
[0,1], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg - v_right * m_flBeamHalfwidth + v_up * m_flBeamHalfwidth,
[0,0], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg + v_right * m_flBeamHalfwidth + v_up * m_flBeamHalfwidth,
[1,0], m_vecColor * coneAlpha, 1.0f);
R_EndPolygon();
}
if (vecAngle[0] < 0)
coneAlpha = bound(0.0, fabs(vecAngle[0]) / 45.0f, 1.0);
else
coneAlpha = 0.0f;
coneAlpha = (1.0 - coneAlpha) * 0.5f;
//NSLog("coneAlpha: %f\n", coneAlpha);
/* beam */
if (coneAlpha > 0.0) {
vector finalColor = (m_vecColor * (coneAlpha * 0.5f));
#if 0
//vecPlayer[2] = origin[2];
@ -147,11 +155,11 @@ point_spotlight::predraw(void)
[1,0], m_vecColor * coneAlpha, 1.0f);
R_EndPolygon();
#else
makevectors(getproperty(VF_CL_VIEWANGLES));
makevectors(vecAngle);
setproperty(VF_ORIGIN, vecPlayer);
R_BeginPolygon("textures/sfx/spot_cone");
R_PolygonVertex(origin, [1,0], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(m_vecBeamEnd, [1,1], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(origin, [1,0], finalColor, 1.0f);
R_PolygonVertex(m_vecBeamEnd, [1,1], finalColor, 1.0f);
R_EndPolygonRibbon(m_flBeamWidth, [-1,0]);
/* debug */
@ -161,6 +169,25 @@ point_spotlight::predraw(void)
R_EndPolygon();*/
#endif
}
coneAlpha = FlareViewDelta(coneAlpha, vecAngle);
if (coneAlpha > 0.0) {
vector flareOrg = origin;
makevectors(vectoangles(origin - vecPlayer));
flareOrg += v_forward * - 16.0f;
R_BeginPolygon("textures/sfx/spot_flare");
R_PolygonVertex(flareOrg + v_right * m_flBeamHalfwidth - v_up * m_flBeamHalfwidth,
[1,1], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg - v_right * m_flBeamHalfwidth - v_up * m_flBeamHalfwidth,
[0,1], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg - v_right * m_flBeamHalfwidth + v_up * m_flBeamHalfwidth,
[0,0], m_vecColor * coneAlpha, 1.0f);
R_PolygonVertex(flareOrg + v_right * m_flBeamHalfwidth + v_up * m_flBeamHalfwidth,
[1,0], m_vecColor * coneAlpha, 1.0f);
R_EndPolygon();
}
}
/* skip dlight */