Plane dynlight setup

src/r_bsp.cpp

@@ -1129,6 +1129,9 @@ void R_Subsector (subsector_t *sub)
 					portal
 					) : NULL;
 
+	if (ceilingplane)
+		R_AddPlaneLights(ceilingplane, frontsector->lighthead);
+
 	if (fixedlightlev < 0 && frontsector->e && frontsector->e->XFloor.lightlist.Size())
 	{
 		light = P_GetPlaneLight(frontsector, &frontsector->floorplane, false);
@@ -1166,6 +1169,9 @@ void R_Subsector (subsector_t *sub)
 					portal
 					) : NULL;
 
+	if (floorplane)
+		R_AddPlaneLights(floorplane, frontsector->lighthead);
+
 	// kg3D - fake planes rendering
 	if (r_3dfloors && frontsector->e && frontsector->e->XFloor.ffloors.Size())
 	{
@@ -1223,6 +1229,9 @@ void R_Subsector (subsector_t *sub)
 					frontsector->sky,
 					NULL);
 
+				if (floorplane)
+					R_AddPlaneLights(floorplane, frontsector->lighthead);
+
 				R_FakeDrawLoop(sub);
 				fake3D = 0;
 				frontsector = sub->sector;
@@ -1284,6 +1293,9 @@ void R_Subsector (subsector_t *sub)
 					frontsector->sky,
 					NULL);
 
+				if (ceilingplane)
+					R_AddPlaneLights(ceilingplane, frontsector->lighthead);
+
 				R_FakeDrawLoop(sub);
 				fake3D = 0;
 				frontsector = sub->sector;

src/r_draw.cpp

@@ -63,6 +63,7 @@ namespace swrenderer
 
 	double dc_texturemid;
 	FLightNode *dc_light_list;
+	visplane_light *ds_light_list;
 
 	int ylookup[MAXHEIGHT];
 	uint8_t shadetables[NUMCOLORMAPS * 16 * 256];

src/r_draw.h

@@ -20,6 +20,7 @@ EXTERN_CVAR(Int, r_columnmethod);
 namespace swrenderer
 {
 	struct vissprite_t;
+	struct visplane_light;
 
 	struct ShadeConstants
 	{
@@ -37,6 +38,7 @@ namespace swrenderer
 
 	extern double dc_texturemid;
 	extern FLightNode *dc_light_list;
+	extern visplane_light *ds_light_list;
 
 	namespace drawerargs
 	{

src/r_plane.cpp

@@ -59,6 +59,7 @@
 #include "v_palette.h"
 #include "r_data/colormaps.h"
 #include "r_draw_rgba.h"
+#include "gl/dynlights/gl_dynlight.h"
 
 #ifdef _MSC_VER
 #pragma warning(disable:4244)
@@ -255,6 +256,50 @@ void R_MapPlane (int y, int x1)
 		R_SetDSColorMapLight(basecolormap, GlobVis * fabs(CenterY - y), planeshade);
 	}
 
+	if (r_swtruecolor)
+	{
+		// Find row position in view space
+		float zspan = (float)((CenterY - y - 0.5) * InvZtoScale / planeheight);
+		dc_viewpos.X = (float)((x1 + 0.5 - CenterX) / CenterX * zspan);
+		dc_viewpos.Y = zspan;
+		dc_viewpos.Z = (float)planeheight;
+		dc_viewpos_step.X = (float)(-zspan / InvZtoScale);
+
+		static TriLight lightbuffer[64 * 1024];
+		static int nextlightindex = 0;
+
+		// Setup lights for column
+		dc_num_lights = 0;
+		dc_lights = lightbuffer + nextlightindex;
+		visplane_light *cur_node = ds_light_list;
+		while (cur_node && nextlightindex < 64 * 1024)
+		{
+			uint32_t red = cur_node->lightsource->GetRed();
+			uint32_t green = cur_node->lightsource->GetGreen();
+			uint32_t blue = cur_node->lightsource->GetBlue();
+
+			double lightX = cur_node->lightsource->X() - ViewPos.X;
+			double lightY = cur_node->lightsource->Y() - ViewPos.Y;
+			double lightZ = cur_node->lightsource->Z() - ViewPos.Z;
+
+			nextlightindex++;
+			auto &light = dc_lights[dc_num_lights++];
+			light.x = (float)(lightX * ViewSin - lightY * ViewCos);
+			light.y = (float)(lightX * ViewTanCos + lightY * ViewTanSin) - dc_viewpos.Y;
+			light.z = (float)(lightZ - dc_viewpos.Z);
+			light.radius = 256.0f / cur_node->lightsource->GetRadius();
+			light.color = 0xff000000 | (red << 16) | (green << 8) | blue;
+
+			// Precalculate the constant part of the dot here so the drawer doesn't have to.
+			light.y = light.y * light.y + light.z * light.z;
+
+			cur_node = cur_node->next;
+		}
+
+		if (nextlightindex == 64 * 1024)
+			nextlightindex = 0;
+	}
+
 	ds_y = y;
 	ds_x1 = x1;
 	ds_x2 = x2;
@@ -284,6 +329,47 @@ void R_MapColoredPlane(int y, int x1)
 	R_DrawColoredSpan(y, x1, spanend[y]);
 }
 
+//==========================================================================
+
+namespace
+{
+	enum { max_plane_lights = 32 * 1024 };
+	visplane_light plane_lights[max_plane_lights];
+	int next_plane_light = 0;
+}
+
+void R_AddPlaneLights(visplane_t *plane, FLightNode *node)
+{
+	while (node)
+	{
+		if (!(node->lightsource->flags2&MF2_DORMANT))
+		{
+			bool found = false;
+			visplane_light *light_node = plane->lights;
+			while (light_node)
+			{
+				if (light_node->lightsource == node->lightsource)
+				{
+					found = true;
+					break;
+				}
+				light_node = light_node->next;
+			}
+			if (!found)
+			{
+				if (next_plane_light == max_plane_lights)
+					return;
+
+				visplane_light *newlight = &plane_lights[next_plane_light++];
+				newlight->next = plane->lights;
+				newlight->lightsource = node->lightsource;
+				plane->lights = newlight;
+			}
+		}
+		node = node->nextLight;
+	}
+}
+
 //==========================================================================
 //
 // R_ClearPlanes
@@ -336,6 +422,8 @@ void R_ClearPlanes (bool fullclear)
 			? (ConBottom - viewwindowy) : 0);
 
 		lastopening = 0;
+
+		next_plane_light = 0;
 	}
 }
 
@@ -363,6 +451,8 @@ static visplane_t *new_visplane (unsigned hash)
 		freehead = &freetail;
 	}
 
+	check->lights = nullptr;
+
 	check->next = visplanes[hash];
 	visplanes[hash] = check;
 	return check;
@@ -1815,6 +1905,8 @@ void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1))
 	int t2 = pl->top[x];
 	int b2 = pl->bottom[x];
 
+	ds_light_list = pl->lights;
+
 	if (b2 > t2)
 	{
 		fillshort (spanend+t2, b2-t2, x);
@@ -1861,6 +1953,8 @@ void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1))
 	{
 		mapfunc (--b2, pl->left);
 	}
+
+	ds_light_list = nullptr;
 }
 
 //==========================================================================

src/r_plane.h

@@ -26,10 +26,18 @@
 #include <stddef.h>
 
 class ASkyViewpoint;
+class ADynamicLight;
+struct FLightNode;
 
 namespace swrenderer
 {
 
+struct visplane_light
+{
+	ADynamicLight *lightsource;
+	visplane_light *next;
+};
+
 //
 // The infamous visplane
 // 
@@ -39,6 +47,7 @@ struct visplane_s
 
 	FDynamicColormap *colormap;		// [RH] Support multiple colormaps
 	FSectorPortal *portal;			// [RH] Support sky boxes
+	visplane_light *lights;
 
 	FTransform	xform;
 	secplane_t	height;
@@ -89,6 +98,8 @@ void R_InitPlanes ();
 void R_DeinitPlanes ();
 void R_ClearPlanes (bool fullclear);
 
+void R_AddPlaneLights(visplane_t *plane, FLightNode *light_head);
+
 int R_DrawPlanes ();
 void R_DrawPortals ();
 void R_DrawSkyPlane (visplane_t *pl);