Hook up portals to gl_meshcache

src/CMakeLists.txt

@@ -727,6 +727,7 @@ set( FASTMATH_SOURCES
 	rendering/hwrenderer/scene/hw_clipper.cpp
 	rendering/hwrenderer/scene/hw_flats.cpp
 	rendering/hwrenderer/scene/hw_portal.cpp
+	rendering/hwrenderer/scene/hw_meshportal.cpp
 	rendering/hwrenderer/scene/hw_renderhacks.cpp
 	rendering/hwrenderer/scene/hw_sky.cpp
 	rendering/hwrenderer/scene/hw_skyportal.cpp

src/rendering/hwrenderer/scene/hw_bsp.cpp

@@ -42,6 +42,7 @@
 #include "hw_clock.h"
 #include "flatvertices.h"
 #include "hw_vertexbuilder.h"
+#include "hw_meshportal.h"
 
 #ifdef ARCH_IA32
 #include <immintrin.h>
@@ -50,6 +51,7 @@
 CVAR(Bool, gl_multithread, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 
 EXTERN_CVAR(Float, r_actorspriteshadowdist)
+EXTERN_CVAR(Bool, gl_meshcache)
 
 thread_local bool isWorkerThread;
 ctpl::thread_pool renderPool(1);
@@ -347,6 +349,14 @@ void HWDrawInfo::AddLine (seg_t *seg, bool portalclip, FRenderState& state)
 			{
 				jobQueue.AddJob(RenderJob::WallJob, seg->Subsector, seg);
 			}
+			else if (MeshBSP)
+			{
+				SetupWall.Clock();
+				HWPortalWall portalwall;
+				portalwall.Process(this, state, seg, currentsector, backsector);
+				rendered_lines++;
+				SetupWall.Unclock();
+			}
 			else
 			{
 				HWWall wall;
@@ -737,7 +747,7 @@ void HWDrawInfo::DoSubsector(subsector_t * sub, FRenderState& state)
 					{
 						jobQueue.AddJob(RenderJob::FlatJob, sub);
 					}
-					else
+					else if (!MeshBSP)
 					{
 						HWFlat flat;
 						flat.section = sub->section;
@@ -843,7 +853,8 @@ void HWDrawInfo::RenderBSP(void *node, bool drawpsprites, FRenderState& state)
 
 	validcount++;	// used for processing sidedefs only once by the renderer.
 
-	multithread = gl_multithread;
+	MeshBSP = gl_meshcache;
+	multithread = gl_multithread && !MeshBSP;
 	if (multithread)
 	{
 		jobQueue.ReleaseAll();

src/rendering/hwrenderer/scene/hw_drawinfo.cpp

@@ -141,7 +141,7 @@ void HWDrawInfo::StartScene(FRenderViewpoint &parentvp, HWViewpointUniforms *uni
 
 HWDrawInfo *HWDrawInfo::EndDrawInfo()
 {
-	assert(this == gl_drawinfo);
+	assert(this == drawctx->gl_drawinfo);
 	for (int i = 0; i < GLDL_TYPES; i++) drawlists[i].Reset();
 	drawctx->gl_drawinfo = outer;
 	drawctx->di_list.Release(this);
@@ -395,7 +395,6 @@ void HWDrawInfo::CreateScene(bool drawpsprites, FRenderState& state)
 
 	// clip the scene and fill the drawlists
 
-	if (!gl_meshcache)
 	RenderBSP(Level->HeadNode(), drawpsprites, state);
 
 	// And now the crappy hacks that have to be done to avoid rendering anomalies.

src/rendering/hwrenderer/scene/hw_drawinfo.h

@@ -175,6 +175,7 @@ struct HWDrawInfo
 	fixed_t viewx, viewy;	// since the nodes are still fixed point, keeping the view position  also fixed point for node traversal is faster.
 	bool multithread;
 
+	bool MeshBSP = false;
 	bool MeshBuilding = false;
 
 	HWDrawInfo(HWDrawContext* drawctx) : drawctx(drawctx) { for (HWDrawList& list : drawlists) list.drawctx = drawctx; }

src/rendering/hwrenderer/scene/hw_meshportal.cpp

@@ -0,0 +1,64 @@
+
+#include "hw_meshportal.h"
+#include "p_local.h"
+#include "p_lnspec.h"
+#include "a_dynlight.h"
+#include "a_sharedglobal.h"
+#include "r_defs.h"
+#include "r_sky.h"
+#include "r_utility.h"
+#include "p_maputl.h"
+#include "doomdata.h"
+#include "g_levellocals.h"
+#include "actorinlines.h"
+#include "texturemanager.h"
+#include "hw_dynlightdata.h"
+#include "hw_material.h"
+#include "hw_cvars.h"
+#include "hw_clock.h"
+#include "hw_lighting.h"
+#include "hw_drawcontext.h"
+#include "hw_drawinfo.h"
+#include "hw_renderstate.h"
+
+void HWPortalWall::Process(HWDrawInfo* di, FRenderState& state, seg_t* seg, sector_t* frontsector, sector_t* backsector)
+{
+	// The portal code wants a HWWall struct.
+
+	if (IsPortal(di, state, seg, frontsector, backsector))
+	{
+		HWWall wall;
+		wall.sub = seg->Subsector;
+		wall.Process(di, state, seg, frontsector, backsector);
+	}
+}
+
+bool HWPortalWall::IsPortal(HWDrawInfo* di, FRenderState& state, seg_t* seg, sector_t* frontsector, sector_t* backsector)
+{
+	// Note: This is incomplete. It assumes a completely valid map. Good luck adding the full range of checks!
+
+	if (seg->linedef->special == Line_Mirror && gl_mirrors)
+		return true;
+
+	if (seg->linedef->special == Line_Horizon)
+		return true;
+
+	if (seg->linedef->isVisualPortal() && seg->sidedef == seg->linedef->sidedef[0])
+		return true;
+
+	if (seg->linedef->GetTransferredPortal())
+		return true;
+
+	for (int plane : { sector_t::floor, sector_t::ceiling })
+	{
+		FSectorPortal* sportal = frontsector->ValidatePortal(plane);
+		if (frontsector->ValidatePortal(plane) && !(sportal->mFlags & PORTSF_INSKYBOX)) // no recursions
+			return true;
+		if (frontsector->GetTexture(plane) == skyflatnum)
+			return true;
+		if (frontsector->GetReflect(plane) > 0)
+			return true;
+	}
+
+	return false;
+}

src/rendering/hwrenderer/scene/hw_meshportal.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "hw_drawstructs.h"
+
+class HWPortalWall
+{
+public:
+	static void Process(HWDrawInfo* di, FRenderState& state, seg_t* seg, sector_t* frontsector, sector_t* backsector);
+
+private:
+	static bool IsPortal(HWDrawInfo* di, FRenderState& state, seg_t* seg, sector_t* frontsector, sector_t* backsector);
+};