- floatified vertices and removed the now redundant fx and fy members. This needs an added check for polyobject origins, though, so that such subsectors don't get rendered.

src/gl/data/gl_setup.cpp

@@ -472,22 +472,18 @@ static void InitVertexData()
 //
 //==========================================================================
 
-static void GetSideVertices(int sdnum, FVector2 *v1, FVector2 *v2)
+static void GetSideVertices(int sdnum, DVector2 *v1, DVector2 *v2)
 {
 	line_t *ln = sides[sdnum].linedef;
 	if (ln->sidedef[0] == &sides[sdnum]) 
 	{
-		v1->X = ln->v1->fx;
+		*v1 = ln->v1->fPos();
-		v1->Y = ln->v1->fy;
+		*v2 = ln->v2->fPos();
-		v2->X = ln->v2->fx;
-		v2->Y = ln->v2->fy;
 	}
 	else
 	{
-		v2->X = ln->v1->fx;
+		*v2 = ln->v1->fPos();
-		v2->Y = ln->v1->fy;
+		*v1 = ln->v2->fPos();
-		v1->X = ln->v2->fx;
-		v1->Y = ln->v2->fy;
 	}
 }
 
@@ -512,8 +508,6 @@ static void PrepareSegs()
 	// Get floatng point coordinates of vertices
 	for(int i = 0; i < numvertexes; i++)
 	{
-		vertexes[i].fx = vertexes[i].fX();
-		vertexes[i].fy = vertexes[i].fY();
 		vertexes[i].dirty = true;
 	}
 
@@ -559,7 +553,7 @@ static void PrepareSegs()
 
 		realsegs++;
 		segcount[sidenum]++;
-		FVector2 sidestart, sideend, segend(seg->v2->fx, seg->v2->fy);
+		DVector2 sidestart, sideend, segend = seg->v2->fPos();
 		GetSideVertices(sidenum, &sidestart, &sideend);
 
 		sideend -=sidestart;

src/gl/data/gl_vertexbuffer.cpp

@@ -155,11 +155,11 @@ void FFlatVertexBuffer::ImmRenderBuffer(unsigned int primtype, unsigned int offs
 
 void FFlatVertex::SetFlatVertex(vertex_t *vt, const secplane_t & plane)
 {
-	x = vt->fx;
+	x = vt->fX();
-	y = vt->fy;
+	y = vt->fY();
-	z = plane.ZatPoint(vt->fx, vt->fy); // this is the original position without polyobject translation.
+	z = plane.ZatPoint(vt);
-	u = vt->fx/64.f;
+	u = vt->fX()/64.f;
-	v = -vt->fy/64.f;
+	v = -vt->fY()/64.f;
 }
 
 //==========================================================================

src/gl/scene/gl_bsp.cpp

@@ -374,6 +374,7 @@ static void DoSubsector(subsector_t * sub)
 
 	// If the mapsections differ this subsector can't possibly be visible from the current view point
 	if (!(currentmapsection[sub->mapsection>>3] & (1 << (sub->mapsection & 7)))) return;
+	if (sub->flags & SSECF_POLYORG) return;	// never render polyobject origin subsectors because their vertices no longer are where one may expect.
 
 	if (gl_drawinfo->ss_renderflags[sub-subsectors] & SSRF_SEEN)
 	{

src/gl/scene/gl_clipper.cpp

@@ -396,7 +396,6 @@ void R_SetView()
 
 angle_t R_PointToPseudoAngle (fixed_t x, fixed_t y)
 {
-	// Note: float won't work here as it's less precise than the BAM values being passed as parameters
 	double vecx = double(x-viewx);
 	double vecy = double(y-viewy);
 	
@@ -416,6 +415,26 @@ angle_t R_PointToPseudoAngle (fixed_t x, fixed_t y)
 }
 
 
+angle_t R_PointToPseudoAngle(double x, double y)
+{
+	double vecx = x - ViewPos.X;
+	double vecy = y - ViewPos.Y;
+
+	if (vecx == 0 && vecy == 0)
+	{
+		return 0;
+	}
+	else
+	{
+		double result = vecy / (fabs(vecx) + fabs(vecy));
+		if (vecx < 0)
+		{
+			result = 2.f - result;
+		}
+		return xs_Fix<30>::ToFix(result);
+	}
+}
+
 
 
 //-----------------------------------------------------------------------------

src/gl/scene/gl_clipper.h

@@ -137,12 +137,13 @@ public:
 extern Clipper clipper;
 
 angle_t R_PointToPseudoAngle (fixed_t x, fixed_t y);
+angle_t R_PointToPseudoAngle(double x, double y);
 void R_SetView();
 
 // Used to speed up angle calculations during clipping
 inline angle_t vertex_t::GetClipAngle()
 {
-	return angletime == Clipper::anglecache? viewangle : (angletime = Clipper::anglecache, viewangle = R_PointToPseudoAngle(x,y));
+	return angletime == Clipper::anglecache? viewangle : (angletime = Clipper::anglecache, viewangle = R_PointToPseudoAngle(p.X, p.Y));
 }
 
 #endif

src/gl/scene/gl_flats.cpp

@@ -174,33 +174,16 @@ void GLFlat::SetupSubsectorLights(int pass, subsector_t * sub, int *dli)
 void GLFlat::DrawSubsector(subsector_t * sub)
 {
 	FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
-	if (plane.plane.isSlope())
-	{
 	for (unsigned int k = 0; k < sub->numlines; k++)
 	{
 		vertex_t *vt = sub->firstline[k].v1;
-			ptr->x = vt->fx;
+		ptr->x = vt->fX();
-			ptr->y = vt->fy;
+		ptr->y = vt->fY();
-			ptr->z = plane.plane.ZatPoint(vt->fx, vt->fy) + dz;
+		ptr->z = plane.plane.ZatPoint(vt) + dz;
-			ptr->u = vt->fx / 64.f;
+		ptr->u = vt->fX() / 64.f;
-			ptr->v = -vt->fy / 64.f;
+		ptr->v = -vt->fY() / 64.f;
 		ptr++;
 	}
-	}
-	else
-	{
-		float zc = FIXED2FLOAT(plane.plane.Zat0()) + dz;
-		for (unsigned int k = 0; k < sub->numlines; k++)
-		{
-			vertex_t *vt = sub->firstline[k].v1;
-			ptr->x = vt->fx;
-			ptr->y = vt->fy;
-			ptr->z = zc;
-			ptr->u = vt->fx / 64.f;
-			ptr->v = -vt->fy / 64.f;
-			ptr++;
-		}
-	}
 	GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
 
 	flatvertices += sub->numlines;

src/gl/scene/gl_vertex.cpp

@@ -82,8 +82,8 @@ void GLWall::SplitUpperEdge(texcoord * tcs, FFlatVertex *&ptr)
 
 		float fracfac = sidefrac - glseg.fracleft;
 
-		ptr->x = cseg->v2->fx;
+		ptr->x = cseg->v2->fX();
-		ptr->y = cseg->v2->fy;
+		ptr->y = cseg->v2->fY();
 		ptr->z = ztop[0] + fact * fracfac;
 		ptr->u = tcs[1].u + facu * fracfac;
 		ptr->v = tcs[1].v + facv * fracfac;
@@ -118,8 +118,8 @@ void GLWall::SplitLowerEdge(texcoord * tcs, FFlatVertex *&ptr)
 
 		float fracfac = sidefrac - glseg.fracleft;
 
-		ptr->x = cseg->v2->fx;
+		ptr->x = cseg->v2->fX();
-		ptr->y = cseg->v2->fy;
+		ptr->y = cseg->v2->fY();
 		ptr->z = zbottom[0] + facb * fracfac;
 		ptr->u = tcs[0].u + facu * fracfac;
 		ptr->v = tcs[0].v + facv * fracfac;

src/gl/utility/gl_geometric.h

@@ -33,8 +33,8 @@ public:
 
 	Vector(vertex_t * v)
 	{
-		SetX(v->fx);
+		SetX((float)v->fX());
-		SetY(v->fy);
+		SetY((float)v->fY());
 		SetZ(0);
 	}
 

src/r_defs.h

@@ -105,48 +105,48 @@ typedef double vtype;
 struct vertex_t
 {
 //private:
-	fixed_t x, y;
+	DVector2 p;
+	//fixed_t x, y;
 
 public:
 
 	void set(fixed_t x, fixed_t y)
 	{
-		this->x = x;
+		p.X = x / 65536.;
-		this->y = y;
+		p.Y = y / 65536.;
 	}
 
 	void set(double x, double y)
 	{
-		this->x = FLOAT2FIXED(x);
+		p.X = x;
-		this->y = FLOAT2FIXED(y);
+		p.Y = y;
 	}
 
 	double fX() const
 	{
-		return FIXED2DBL(x);
+		return p.X;
 	}
 
 	double fY() const
 	{
-		return FIXED2DBL(y);
+		return p.Y;
 	}
 
 	fixed_t fixX() const
 	{
-		return x;
+		return FLOAT2FIXED(p.X);
 	}
 
 	fixed_t fixY() const
 	{
-		return y;
+		return FLOAT2FIXED(p.Y);
 	}
 
 	DVector2 fPos()
 	{
-		return{ fX(), fY() };
+		return { p.X, p.Y };
 	}
 
-	float fx, fy;		// Floating point coordinates of this vertex (excluding polyoblect translation!)
 	angle_t viewangle;	// precalculated angle for clipping
 	int angletime;		// recalculation time for view angle
 	bool dirty;			// something has changed and needs to be recalculated
@@ -157,8 +157,7 @@ public:
 
 	vertex_t()
 	{
-		x = y = 0;
+		p = { 0,0 };
-		fx = fy = 0;
 		angletime = 0;
 		viewangle = 0;
 		dirty = true;
@@ -169,17 +168,17 @@ public:
 
 	bool operator== (const vertex_t &other)
 	{
-		return x == other.x && y == other.y;
+		return p == other.p;
 	}
 
 	bool operator!= (const vertex_t &other)
 	{
-		return x != other.x || y != other.y;
+		return p != other.p;
 	}
 
 	void clear()
 	{
-		x = y = 0;
+		p.Zero();
 	}
 
 	angle_t GetClipAngle();
@@ -397,12 +396,12 @@ public:
 	// This is for the software renderer
 	fixed_t ZatPointFixed(const DVector2 &pos) const
 	{
-		return xs_CRoundToInt((d + a*pos.X + b*pos.Y) * ic / (-65536.0));
+		return FLOAT2FIXED(ZatPoint(pos));
 	}
 
 	fixed_t ZatPointFixed(const vertex_t *v) const
 	{
-		return FixedMul(ic, -d - DMulScale16(a, v->fixX(), b, v->fixY()));
+		return FLOAT2FIXED(ZatPoint(v));
 	}
 
 
@@ -420,7 +419,7 @@ public:
 
 	double ZatPoint(const vertex_t *v) const
 	{
-		return FIXED2DBL(FixedMul(ic, -d - DMulScale16(a, v->fixX(), b, v->fixY())));
+		return (d + a*v->fX() + b*v->fY()) * ic / (-65536.0 * 65536.0);
 	}
 
 	double ZatPoint(const AActor *ac) const
@@ -431,7 +430,7 @@ public:
 	// Returns the value of z at vertex v if d is equal to dist
 	double ZatPointDist(const vertex_t *v, double dist)
 	{
-		return FIXED2DBL(FixedMul(ic, -FLOAT2FIXED(dist) - DMulScale16(a, v->fixX(), b, v->fixY())));
+		return (dist + a*v->fX() + b*v->fY()) * ic / (-65536.0 * 65536.0);
 	}
 	// Flips the plane's vertical orientiation, so that if it pointed up,
 	// it will point down, and vice versa.