- Attenuated lights support

src/polyrenderer/drawers/poly_draw_args.h

@@ -130,6 +130,9 @@ public:
 	PolyLight *Lights() const { return mLights; }
 	int NumLights() const { return mNumLights; }
 
+	const FVector3 &Normal() const { return mNormal; }
+	void SetNormal(const FVector3 &normal) { mNormal = normal; }
+
 private:
 	const TriMatrix *mObjectToClip = nullptr;
 	const TriVertex *mVertices = nullptr;
@@ -168,6 +171,7 @@ private:
 	bool mFixedLight = false;
 	PolyLight *mLights = nullptr;
 	int mNumLights = 0;
+	FVector3 mNormal;
 };
 
 class RectDrawArgs

src/polyrenderer/drawers/poly_drawer32_sse2.h

@@ -180,9 +180,10 @@ namespace TriScreenDrawerModes
 			__m128 simple_attenuation = distance_attenuation;
 
 			// The point light type
-			// diffuse = dot(N,L) * attenuation
-			__m128 dotNL = _mm_mul_ps(worldnormal, L);
+			// diffuse = max(dot(N,normalize(L)),0) * attenuation
+			__m128 dotNL = _mm_mul_ps(worldnormal, _mm_mul_ps(L, _mm_shuffle_ps(rcp_dist, rcp_dist, _MM_SHUFFLE(0, 0, 0, 0))));
 			dotNL = _mm_add_ss(dotNL, _mm_add_ss(_mm_shuffle_ps(dotNL, dotNL, _MM_SHUFFLE(0, 0, 0, 1)), _mm_shuffle_ps(dotNL, dotNL, _MM_SHUFFLE(0, 0, 0, 2))));
+			dotNL = _mm_max_ss(dotNL, _mm_setzero_ps());
 			__m128 point_attenuation = _mm_mul_ss(dotNL, distance_attenuation);
 			point_attenuation = _mm_shuffle_ps(point_attenuation, point_attenuation, _MM_SHUFFLE(0, 0, 0, 0));
 
@@ -394,7 +395,7 @@ private:
 
 		auto lights = args->uniforms->Lights();
 		auto num_lights = args->uniforms->NumLights();
-		__m128 worldnormal = _mm_setzero_ps();
+		__m128 worldnormal = _mm_setr_ps(args->uniforms->Normal().X, args->uniforms->Normal().Y, args->uniforms->Normal().Z, 0.0f);
 
 		// Calculate gradients
 		const ShadedTriVertex &v1 = *args->v1;

src/polyrenderer/scene/poly_plane.cpp

@@ -254,7 +254,7 @@ void RenderPolyPlane::Render(PolyRenderThread *thread, const TriMatrix &worldToC
 
 	if (!isSky)
 	{
-		SetDynLights(thread, args, sub);
+		SetDynLights(thread, args, sub, ceiling);
 		args.SetTexture(tex);
 		args.SetStyle(TriBlendMode::TextureOpaque);
 		args.DrawArray(thread, vertices, sub->numlines, PolyDrawMode::TriangleFan);
@@ -279,7 +279,7 @@ void RenderPolyPlane::Render(PolyRenderThread *thread, const TriMatrix &worldToC
 	}
 }
 
-void RenderPolyPlane::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub)
+void RenderPolyPlane::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub, bool ceiling)
 {
 	FLightNode *light_list = sub->lighthead;
 
@@ -315,7 +315,7 @@ void RenderPolyPlane::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args,
 	{
 		if (!(cur_node->lightsource->flags2&MF2_DORMANT))
 		{
-			//bool is_point_light = (cur_node->lightsource->lightflags & LF_ATTENUATE) != 0;
+			bool is_point_light = (cur_node->lightsource->lightflags & LF_ATTENUATE) != 0;
 
 			// To do: cull lights not touching subsector
 
@@ -329,12 +329,17 @@ void RenderPolyPlane::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args,
 			light.z = (float)cur_node->lightsource->Z();
 			light.radius = 256.0f / cur_node->lightsource->GetRadius();
 			light.color = (red << 16) | (green << 8) | blue;
+			if (is_point_light)
+				light.radius = -light.radius;
 		}
 
 		cur_node = cur_node->nextLight;
 	}
 
 	args.SetLights(dc_lights, dc_num_lights);
+
+	DVector3 normal = ceiling ? sub->sector->ceilingplane.Normal() : sub->sector->floorplane.Normal();
+	args.SetNormal({ (float)normal.X, (float)normal.Y, (float)normal.Z });
 }
 
 void RenderPolyPlane::RenderSkyWalls(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub, sector_t *frontsector, FSectorPortal *portal, PolyDrawSectorPortal *polyportal, bool ceiling, double skyHeight, const PolyPlaneUVTransform &transform)

src/polyrenderer/scene/poly_plane.h

@@ -62,7 +62,7 @@ public:
 private:
 	void Render(PolyRenderThread *thread, const TriMatrix &worldToClip, const PolyClipPlane &clipPlane, subsector_t *sub, uint32_t stencilValue, bool ceiling, double skyHeight, std::vector<std::unique_ptr<PolyDrawSectorPortal>> &sectorPortals);
 	void RenderSkyWalls(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub, sector_t *frontsector, FSectorPortal *portal, PolyDrawSectorPortal *polyportal, bool ceiling, double skyHeight, const PolyPlaneUVTransform &transform);
-	void SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub);
+	void SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args, subsector_t *sub, bool ceiling);
 };
 
 class Render3DFloorPlane

src/polyrenderer/scene/poly_wall.cpp

@@ -404,7 +404,7 @@ void RenderPolyWall::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args)
 	{
 		if (!(cur_node->lightsource->flags2&MF2_DORMANT))
 		{
-			//bool is_point_light = (cur_node->lightsource->lightflags & LF_ATTENUATE) != 0;
+			bool is_point_light = (cur_node->lightsource->lightflags & LF_ATTENUATE) != 0;
 
 			// To do: cull lights not touching wall
 
@@ -418,12 +418,25 @@ void RenderPolyWall::SetDynLights(PolyRenderThread *thread, PolyDrawArgs &args)
 			light.z = (float)cur_node->lightsource->Z();
 			light.radius = 256.0f / cur_node->lightsource->GetRadius();
 			light.color = (red << 16) | (green << 8) | blue;
+			if (is_point_light)
+				light.radius = -light.radius;
 		}
 
 		cur_node = cur_node->nextLight;
 	}
 
 	args.SetLights(dc_lights, dc_num_lights);
+
+	// Face normal:
+	float dx = (float)(v2.X - v1.X);
+	float dy = (float)(v2.Y - v1.Y);
+	float nx = dy;
+	float ny = -dx;
+	float lensqr = nx * nx + ny * ny;
+	float rcplen = 1.0f / sqrt(lensqr);
+	nx *= rcplen;
+	ny *= rcplen;
+	args.SetNormal({ nx, ny, 0.0f });
 }
 
 void RenderPolyWall::DrawStripes(PolyRenderThread *thread, PolyDrawArgs &args, TriVertex *vertices)