Consolidated isometric mode commits.

src/am_map.cpp

@@ -2822,7 +2822,7 @@ void DAutomap::drawPlayers ()
 		int numarrowlines;
 
 		double vh = players[consoleplayer].viewheight;
-		DVector2 pos = players[consoleplayer].camera->InterpolatedPosition(r_viewpoint.TicFrac).XY();
+		DVector2 pos = players[consoleplayer].mo->InterpolatedPosition(r_viewpoint.TicFrac).XY();
 		pt.x = pos.X;
 		pt.y = pos.Y;
 		if (am_rotate == 1 || (am_rotate == 2 && viewactive))
@@ -2832,7 +2832,7 @@ void DAutomap::drawPlayers ()
 		}
 		else
 		{
-			angle = players[consoleplayer].camera->InterpolatedAngles(r_viewpoint.TicFrac).Yaw;
+			angle = players[consoleplayer].mo->InterpolatedAngles(r_viewpoint.TicFrac).Yaw;
 		}
 
 		if (am_cheat != 0 && CheatMapArrow.Size() > 0)

src/common/rendering/hwrenderer/data/hw_cvars.h

@@ -54,3 +54,6 @@ EXTERN_CVAR(Bool, gl_debug_breakpoint)
 EXTERN_CVAR(Bool, gl_brightfog)
 EXTERN_CVAR(Bool, gl_lightadditivesurfaces)
 EXTERN_CVAR(Bool, gl_notexturefill)
+
+EXTERN_CVAR(Bool, r_radarclipper)
+EXTERN_CVAR(Bool, r_dithertransparency)

src/common/rendering/hwrenderer/data/hw_renderstate.h

@@ -32,6 +32,7 @@ enum ERenderEffect
 	EFF_BURN,
 	EFF_STENCIL,
 	EFF_PORTAL,
+	EFF_DITHERTRANS,
 
 	MAX_EFFECTS
 };

src/common/rendering/hwrenderer/data/hw_vrmodes.cpp

@@ -146,11 +146,27 @@ float VREyeInfo::getShift() const
 	return vr_swap_eyes ? -res : res;
 }
 
-VSMatrix VREyeInfo::GetProjection(float fov, float aspectRatio, float fovRatio) const
+VSMatrix VREyeInfo::GetProjection(float fov, float aspectRatio, float fovRatio, bool iso_ortho) const
 {
 	VSMatrix result;
 
-	if (mShiftFactor == 0)
+	if (iso_ortho) // Orthographic projection for isometric viewpoint
+	{
+		double zNear = -3.0/fovRatio; // screen->GetZNear();
+		double zFar = screen->GetZFar();
+
+		double fH = tan(DEG2RAD(fov) / 2) / fovRatio;
+		double fW = fH * aspectRatio * mScaleFactor;
+		double left = -fW;
+		double right = fW;
+		double bottom = -fH;
+		double top = fH;
+
+		VSMatrix fmat(1);
+		fmat.ortho((float)left, (float)right, (float)bottom, (float)top, (float)zNear, (float)zFar);
+		return fmat;
+	}
+	else if (mShiftFactor == 0)
 	{
 		float fovy = (float)(2 * RAD2DEG(atan(tan(DEG2RAD(fov) / 2) / fovRatio)));
 		result.perspective(fovy, aspectRatio, screen->GetZNear(), screen->GetZFar());

src/common/rendering/hwrenderer/data/hw_vrmodes.h

@@ -27,7 +27,7 @@ struct VREyeInfo
 	float mShiftFactor;
 	float mScaleFactor;
 
-	VSMatrix GetProjection(float fov, float aspectRatio, float fovRatio) const;
+	VSMatrix GetProjection(float fov, float aspectRatio, float fovRatio, bool iso_ortho) const;
 	DVector3 GetViewShift(float yaw) const;
 private:
 	float getShift() const;

src/common/rendering/vulkan/shaders/vk_shader.cpp

@@ -72,6 +72,7 @@ VkShaderProgram* VkShaderManager::Get(const VkShaderKey& key)
 			{ "burn",         "shaders/scene/frag_burn.glsl",        nullptr,                               nullptr,                                nullptr,                                "#define SIMPLE\n#define NO_ALPHATEST\n" },
 			{ "stencil",      "shaders/scene/frag_stencil.glsl",     nullptr,                               nullptr,                                nullptr,                                "#define SIMPLE\n#define NO_ALPHATEST\n" },
 			{ "portal",       "shaders/scene/frag_portal.glsl",      nullptr,                               nullptr,                                nullptr,                                "#define SIMPLE\n#define NO_ALPHATEST\n" },
+			{ "dithertrans",  "shaders/scene/frag_main.glsl",        "shaders/scene/material_default.glsl", "shaders/scene/mateffect_default.glsl", "shaders/scene/lightmodel_normal.glsl", "#define NO_ALPHATEST\n#define DITHERTRANS\n" },
 		};
 
 		const auto& desc = effectshaders[key.SpecialEffect];

src/common/utility/m_bbox.h

@@ -72,6 +72,13 @@ class FBoundingBox
 			m_Box[BOXTOP] = pos.Y;
 	}
 
+	bool CheckOverlap(const FBoundingBox &box2)
+	{
+		bool hori = (Left() > box2.Right()) || (Right() < box2.Left());
+		bool vert = (Bottom() > box2.Top()) || (Top() < box2.Bottom());
+		return !(hori || vert); // [DVR] For alternative space partition
+	}
+
 	inline double Top () const { return m_Box[BOXTOP]; }
 	inline double Bottom () const { return m_Box[BOXBOTTOM]; }
 	inline double Left () const { return m_Box[BOXLEFT]; }

src/gamedata/g_mapinfo.cpp

@@ -1823,6 +1823,7 @@ MapFlagHandlers[] =
 	{ "disableskyboxao",				MITYPE_CLRFLAG3,	LEVEL3_SKYBOXAO, 0 },
 	{ "avoidmelee",						MITYPE_SETFLAG3,	LEVEL3_AVOIDMELEE, 0 },
 	{ "attenuatelights",				MITYPE_SETFLAG3,	LEVEL3_ATTENUATE, 0 },
+	{ "nofogofwar",					MITYPE_SETFLAG3,	LEVEL3_NOFOGOFWAR, 0 },
 	{ "nousersave",						MITYPE_SETVKDFLAG,	VKDLEVELFLAG_NOUSERSAVE, 0 },
 	{ "noautomap",						MITYPE_SETVKDFLAG,	VKDLEVELFLAG_NOAUTOMAP, 0 },
 	{ "noautosaveonenter",				MITYPE_SETVKDFLAG,	VKDLEVELFLAG_NOAUTOSAVEONENTER, 0 },

src/gamedata/g_mapinfo.h

@@ -270,6 +270,7 @@ enum ELevelFlags : unsigned int
 	LEVEL3_AVOIDMELEE			= 0x00020000,	// global flag needed for proper MBF support.
 	LEVEL3_NOJUMPDOWN			= 0x00040000,	// only for MBF21. Inverse of MBF's dog_jumping flag.
 	LEVEL3_LIGHTCREATED			= 0x00080000,	// a light had been created in the last frame
+	LEVEL3_NOFOGOFWAR			= 0x00100000,	// disables effect of r_radarclipper CVAR on this map
 
 	// VKDoom custom flags
 	VKDLEVELFLAG_NOUSERSAVE			= 0x00000001,

src/gamedata/r_defs.h

@@ -303,6 +303,7 @@ struct secplane_t
 	DVector3 normal;
 	double  D, negiC;	// negative iC because that also saves a negation in all methods using this.
 public:
+	bool dithertransflag;	// Render plane with dithering transparency shader (gets reset every frame)
 	friend FSerializer &Serialize(FSerializer &arc, const char *key, secplane_t &p, secplane_t *def);
 
 	void set(double aa, double bb, double cc, double dd)
@@ -1186,6 +1187,8 @@ enum
 	WALLF_ABSLIGHTING_TOP		= WALLF_ABSLIGHTING_TIER << 0, 	// Top tier light is absolute instead of relative
 	WALLF_ABSLIGHTING_MID		= WALLF_ABSLIGHTING_TIER << 1, 	// Mid tier light is absolute instead of relative
 	WALLF_ABSLIGHTING_BOTTOM 	= WALLF_ABSLIGHTING_TIER << 2,	// Bottom tier light is absolute instead of relative
+
+	WALLF_DITHERTRANS			= 8192,	// Render with dithering transparency shader (gets reset every frame)
 };
 
 struct side_t
@@ -1664,6 +1667,7 @@ struct subsector_t
 	uint32_t	numlines;
 	uint16_t	flags;
 	short		mapsection;
+	FBoundingBox	bbox; // [DVR] For alternative space culling in orthographic projection with no fog of war
 
 	// subsector related GL data
 	int				validcount;

src/maploader/maploader.cpp

@@ -3525,4 +3525,23 @@ void MapLoader::LoadLevel(MapData *map, const char *lumpname, int position)
 	}
 
 	Level->aabbTree = new DoomLevelAABBTree(Level);
+
+	// [DVR] Populate subsector->bbox for alternative space culling in orthographic projection with no fog of war
+	subsector_t* sub = &Level->subsectors[0];
+	seg_t* seg;
+	for (unsigned int kk = 0; kk < Level->subsectors.Size(); kk++)
+	{
+		sub[kk].bbox.ClearBox();
+		unsigned int count = sub[kk].numlines;
+		seg = sub[kk].firstline;
+		while(count--)
+		{
+			if((seg->v1 != nullptr) && (seg->v2 != nullptr))
+			{
+				sub[kk].bbox.AddToBox(seg->v1->fPos());
+				sub[kk].bbox.AddToBox(seg->v2->fPos());
+			}
+			seg++;
+		}
+	}
 }

src/playsim/actor.h

@@ -502,6 +502,7 @@ enum ActorRenderFlag2
 	RF2_FLIPSPRITEOFFSETY		= 0x0020,
 	RF2_CAMFOLLOWSPLAYER		= 0x0040,	// Matches the cam's base position and angles to the main viewpoint.
 	RF2_NOMIPMAP				= 0x0080,	// [Nash] forces no mipmapping on sprites. Useful for tiny sprites that need to remain visually crisp
+	RF2_ISOMETRICSPRITES		= 0x0100,
 };
 
 // This translucency value produces the closest match to Heretic's TINTTAB.
@@ -692,8 +693,10 @@ struct FDropItem
 
 enum EViewPosFlags // [MC] Flags for SetViewPos.
 {
-	VPSF_ABSOLUTEOFFSET =	1 << 1,			// Don't include angles.
-	VPSF_ABSOLUTEPOS =		1 << 2,			// Use absolute position.
+	VPSF_ABSOLUTEOFFSET =		1 << 1,			// Don't include angles.
+	VPSF_ABSOLUTEPOS =			1 << 2,			// Use absolute position.
+	VPSF_ALLOWOUTOFBOUNDS =	1 << 3,			// Allow viewpoint to go out of bounds (hardware renderer only).
+	VPSF_ORTHOGRAPHIC =		1 << 4,			// Use orthographic projection (hardware renderer only).
 };
 
 enum EAnimOverrideFlags
@@ -1123,6 +1126,8 @@ class AActor final : public DThinker
 	DAngle			SpriteAngle;
 	DAngle			SpriteRotation;
 	DVector2		AutomapOffsets;		// Offset the actors' sprite view on the automap by these coordinates.
+	float			isoscaleY;				// Y-scale to compensate for Y-billboarding for isometric sprites
+	float			isotheta;				// Rotation angle to compensate for Y-billboarding for isometric sprites
 	DRotator		Angles;
 	DRotator		ViewAngles;			// Angle offsets for cameras
 	TObjPtr<DViewPosition*> ViewPos;			// Position offsets for cameras

src/playsim/p_map.cpp

@@ -82,6 +82,7 @@
 #include "p_blockmap.h"
 #include "p_3dmidtex.h"
 #include "vm.h"
+#include "d_main.h"
 
 #include "decallib.h"
 
@@ -5577,33 +5578,42 @@ void R_OffsetView(FRenderViewpoint& viewPoint, const DVector3& dir, const double
 {
 	const DAngle baseYaw = dir.Angle();
 	FTraceResults trace = {};
-	if (Trace(viewPoint.Pos, viewPoint.sector, dir, distance, 0u, 0u, nullptr, trace))
+	if (viewPoint.IsAllowedOoB() && V_IsHardwareRenderer())
+	{
+		viewPoint.Pos += dir * distance;
+		viewPoint.sector = viewPoint.ViewLevel->PointInRenderSubsector(viewPoint.Pos)->sector;
+	}
+	else if (Trace(viewPoint.Pos, viewPoint.sector, dir, distance, 0u, 0u, nullptr, trace))
 	{
 		viewPoint.Pos = trace.HitPos - trace.HitVector * min<double>(5.0, trace.Distance);
 		viewPoint.sector = viewPoint.ViewLevel->PointInRenderSubsector(viewPoint.Pos)->sector;
+		viewPoint.Angles.Yaw += deltaangle(baseYaw, trace.SrcAngleFromTarget);
 	}
 	else
 	{
 		viewPoint.Pos = trace.HitPos;
 		viewPoint.sector = trace.Sector;
+		viewPoint.Angles.Yaw += deltaangle(baseYaw, trace.SrcAngleFromTarget);
 	}
 
-	viewPoint.Angles.Yaw += deltaangle(baseYaw, trace.SrcAngleFromTarget);
 	// TODO: Why does this even need to be done? Please fix tracers already.
-	if (dir.Z < 0.0)
+	if (!viewPoint.IsAllowedOoB() || !V_IsHardwareRenderer())
 	{
-		while (!viewPoint.sector->PortalBlocksMovement(sector_t::floor) && viewPoint.Pos.Z < viewPoint.sector->GetPortalPlaneZ(sector_t::floor))
+		if (dir.Z < 0.0)
 		{
-			viewPoint.Pos += viewPoint.sector->GetPortalDisplacement(sector_t::floor);
-			viewPoint.sector = viewPoint.sector->GetPortal(sector_t::floor)->mDestination;
+			while (!viewPoint.sector->PortalBlocksMovement(sector_t::floor) && viewPoint.Pos.Z < viewPoint.sector->GetPortalPlaneZ(sector_t::floor))
+			{
+				viewPoint.Pos += viewPoint.sector->GetPortalDisplacement(sector_t::floor);
+				viewPoint.sector = viewPoint.sector->GetPortal(sector_t::floor)->mDestination;
+			}
 		}
-	}
-	else if (dir.Z > 0.0)
-	{
-		while (!viewPoint.sector->PortalBlocksMovement(sector_t::ceiling) && viewPoint.Pos.Z > viewPoint.sector->GetPortalPlaneZ(sector_t::ceiling))
+		else if (dir.Z > 0.0)
 		{
-			viewPoint.Pos += viewPoint.sector->GetPortalDisplacement(sector_t::ceiling);
-			viewPoint.sector = viewPoint.sector->GetPortal(sector_t::ceiling)->mDestination;
+			while (!viewPoint.sector->PortalBlocksMovement(sector_t::ceiling) && viewPoint.Pos.Z > viewPoint.sector->GetPortalPlaneZ(sector_t::ceiling))
+			{
+				viewPoint.Pos += viewPoint.sector->GetPortalDisplacement(sector_t::ceiling);
+				viewPoint.sector = viewPoint.sector->GetPortal(sector_t::ceiling)->mDestination;
+			}
 		}
 	}
 }

src/playsim/p_trace.cpp

@@ -633,6 +633,9 @@ bool FTraceInfo::LineCheck(intercept_t *in, double dist, DVector3 hit, bool spec
 		case TRACE_Stop:
 			return false;
 
+		case TRACE_ContinueOutOfBounds:
+			return true;
+
 		case TRACE_Abort:
 			Results->HitType = TRACE_HitNone;
 			return false;
@@ -732,6 +735,7 @@ bool FTraceInfo::ThingCheck(intercept_t *in, double dist, DVector3 hit)
 			switch (TraceCallback(*Results, TraceCallbackData))
 			{
 			case TRACE_Continue: return true;
+			case TRACE_ContinueOutOfBounds: return true;
 			case TRACE_Stop:	 return false;
 			case TRACE_Abort:	 Results->HitType = TRACE_HitNone; return false;
 			case TRACE_Skip:	 Results->HitType = TRACE_HitNone; return true;

src/playsim/p_trace.h

@@ -109,6 +109,7 @@ enum ETraceStatus
 	TRACE_Continue,		// continue the trace, returning this hit if there are none further along
 	TRACE_Skip,			// continue the trace; do not return this hit
 	TRACE_Abort,		// stop the trace, returning no hits
+	TRACE_ContinueOutOfBounds,	// continue the trace through walls; don't use this for railguns
 };
 
 bool Trace(const DVector3 &start, sector_t *sector, const DVector3 &direction, double maxDist,

src/rendering/hwrenderer/hw_entrypoint.cpp

@@ -165,7 +165,11 @@ sector_t* RenderViewpoint(FRenderViewpoint& mainvp, AActor* camera, IntRect* bou
 		di->Viewpoint.FieldOfView = DAngle::fromDeg(fov);	// Set the real FOV for the current scene (it's not necessarily the same as the global setting in r_viewpoint)
 
 		// Stereo mode specific perspective projection
-		di->VPUniforms.mProjectionMatrix = eye.GetProjection(fov, ratio, fovratio);
+		float inv_iso_dist = 1.0f;
+		bool iso_ortho = (camera->ViewPos != NULL) && (camera->ViewPos->Flags & VPSF_ORTHOGRAPHIC);
+		if (iso_ortho && (camera->ViewPos->Offset.Length() > 0)) inv_iso_dist = 1.0/camera->ViewPos->Offset.Length();
+		di->VPUniforms.mProjectionMatrix = eye.GetProjection(fov, ratio, fovratio * inv_iso_dist, iso_ortho);
+
 		// Stereo mode specific viewpoint adjustment
 		vp.Pos += eye.GetViewShift(vp.HWAngles.Yaw.Degrees());
 		di->SetupView(RenderState, vp.Pos.X, vp.Pos.Y, vp.Pos.Z, false, false);