Allow setting a dynamic light's alpha to influence its brightness. Th…

…is brings it in parity with VKDoom
ZDoom · Dec 26, 2024 · a4e5279 · a4e5279
1 parent d3e5cf7
commit a4e5279
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 0 deletions.
diff --git a/src/rendering/hwrenderer/hw_dynlightdata.cpp b/src/rendering/hwrenderer/hw_dynlightdata.cpp
@@ -92,6 +92,9 @@ void AddLightToList(FDynLightData &dld, int group, FDynamicLight * light, bool f
 		cs = 1.0f;
 	}
 
+	if (light->target)
+		cs *= (float)light->target->Alpha;
+
 	float r = light->GetRed() / 255.0f * cs;
 	float g = light->GetGreen() / 255.0f * cs;
 	float b = light->GetBlue() / 255.0f * cs;

diff --git a/src/rendering/hwrenderer/scene/hw_spritelight.cpp b/src/rendering/hwrenderer/scene/hw_spritelight.cpp
@@ -176,6 +176,15 @@ void HWDrawInfo::GetDynSpriteLight(AActor *self, float x, float y, float z, FLig
 					lr = light->GetRed() / 255.0f;
 					lg = light->GetGreen() / 255.0f;
 					lb = light->GetBlue() / 255.0f;
+
+					if (light->target)
+					{
+						float alpha = (float)light->target->Alpha;
+						lr *= alpha;
+						lg *= alpha;
+						lb *= alpha;
+					}
+
 					if (light->IsSubtractive())
 					{
 						float bright = (float)FVector3(lr, lg, lb).Length();