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- Added spot light support to gl_SetDynSpriteLight

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This commit is contained in:
Magnus Norddahl 2018-01-04 19:27:03 +01:00
parent f398286162
commit bae3620540
2 changed files with 26 additions and 6 deletions
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8
src/gl/dynlights/gl_dynlight1.cpp
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@ -141,10 +141,10 @@ void gl_AddLightToList(int group, ADynamicLight * light, FDynLightData &ldata)
spotOuterAngle = light->SpotOuterAngle.Cos();
DAngle negPitch = -light->Angles.Pitch;
float xyLen = negPitch.Cos();
spotDirX = -light->Angles.Yaw.Cos() * xyLen;
spotDirY = -light->Angles.Yaw.Sin() * xyLen;
spotDirZ = -negPitch.Sin();
double xzLen = negPitch.Cos();
spotDirX = -light->Angles.Yaw.Cos() * xzLen;
spotDirY = -negPitch.Sin();
spotDirZ = -light->Angles.Yaw.Sin() * xzLen;
}
float *data = &ldata.arrays[i][ldata.arrays[i].Reserve(16)];

24
src/gl/scene/gl_spritelight.cpp
View file

@ -49,6 +49,13 @@
FDynLightData modellightdata;
int modellightindex = -1;
template<class T>
T smoothstep(const T edge0, const T edge1, const T x)
{
auto t = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0);
return t * t * (3.0 - 2.0 * t);
}
//==========================================================================
//
// Sets a single light value from all dynamic lights affecting the specified location
@ -70,6 +77,7 @@ void gl_SetDynSpriteLight(AActor *self, float x, float y, float z, subsector_t *
if (light->visibletoplayer && !(light->flags2&MF2_DORMANT) && (!(light->lightflags&LF_DONTLIGHTSELF) || light->target != self) && !(light->lightflags&LF_DONTLIGHTACTORS))
{
float dist;
FVector3 L;
// This is a performance critical section of code where we cannot afford to let the compiler decide whether to inline the function or not.
// This will do the calculations explicitly rather than calling one of AActor's utility functions.
@ -80,14 +88,15 @@ void gl_SetDynSpriteLight(AActor *self, float x, float y, float z, subsector_t *
if (fromgroup == togroup || fromgroup == 0 || togroup == 0) goto direct;
DVector2 offset = Displacements.getOffset(fromgroup, togroup);
dist = FVector3(x - light->X() - offset.X, y - light->Y() - offset.Y, z - light->Z()).LengthSquared();
L = FVector3(x - light->X() - offset.X, y - light->Y() - offset.Y, z - light->Z());
}
else
{
direct:
dist = FVector3(x - light->X(), y - light->Y(), z - light->Z()).LengthSquared();
L = FVector3(x - light->X(), y - light->Y(), z - light->Z());
}
dist = L.LengthSquared();
radius = light->GetRadius();
if (dist < radius * radius)
@ -96,6 +105,17 @@ void gl_SetDynSpriteLight(AActor *self, float x, float y, float z, subsector_t *
frac = 1.0f - (dist / radius);
if (light->IsSpot())
{
DAngle negPitch = -light->Angles.Pitch;
double xzLen = negPitch.Cos();
double spotDirX = -light->Angles.Yaw.Cos() * xzLen;
double spotDirY = -negPitch.Sin();
double spotDirZ = -light->Angles.Yaw.Sin() * xzLen;
double cosDir = L.X * spotDirX + L.Y * spotDirY + L.Z * spotDirZ;
frac *= (float)smoothstep(light->SpotOuterAngle.Cos(), light->SpotInnerAngle.Cos(), cosDir);
}
if (frac > 0 && GLRenderer->mShadowMap.ShadowTest(light, { x, y, z }))
{
lr = light->GetRed() / 255.0f;