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- Fix sprite spot light calculation

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This commit is contained in:
Magnus Norddahl 2018-01-04 19:42:52 +01:00
parent bae3620540
commit 79440d7014
1 changed files with 5 additions and 4 deletions
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9
src/gl/scene/gl_spritelight.cpp
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@ -107,11 +107,12 @@ void gl_SetDynSpriteLight(AActor *self, float x, float y, float z, subsector_t *
if (light->IsSpot())
{
L *= -1.0f / dist;
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 xyLen = negPitch.Cos();
double spotDirX = -light->Angles.Yaw.Cos() * xyLen;
double spotDirY = -light->Angles.Yaw.Sin() * xyLen;
double spotDirZ = -negPitch.Sin();
double cosDir = L.X * spotDirX + L.Y * spotDirY + L.Z * spotDirZ;
frac *= (float)smoothstep(light->SpotOuterAngle.Cos(), light->SpotInnerAngle.Cos(), cosDir);
}