OrdinaryMagician/vkdoom_m
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Line portal rendering

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This commit is contained in:
Magnus Norddahl 2016-11-25 23:44:55 +01:00
commit cc3ac9ea05
4 changed files with 228 additions and 10 deletions
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136
src/r_poly_portal.cpp
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@ -23,6 +23,7 @@
#include <stdlib.h>
#include "templates.h"
#include "doomdef.h"
#include "p_maputl.h"
#include "sbar.h"
#include "r_data/r_translate.h"
#include "r_poly_portal.h"
@ -32,6 +33,8 @@
CVAR(Bool, r_debug_cull, 0, 0)
EXTERN_CVAR(Int, r_portal_recursions)
extern bool r_showviewer;
/////////////////////////////////////////////////////////////////////////////
RenderPolyPortal::RenderPolyPortal()
@ -185,7 +188,7 @@ void RenderPolyPortal::RenderLine(subsector_t *sub, seg_t *line, sector_t *front
}
// Render wall, and update culling info if its an occlusion blocker
if (RenderPolyWall::RenderLine(WorldToClip, line, frontsector, subsectorDepth, StencilValue, SubsectorTranslucentWalls))
if (RenderPolyWall::RenderLine(WorldToClip, line, frontsector, subsectorDepth, StencilValue, SubsectorTranslucentWalls, LinePortals))
{
if (hasSegmentRange)
Cull.MarkSegmentCulled(sx1, sx2);
@ -362,19 +365,144 @@ void PolyDrawSectorPortal::RestoreGlobals()
/////////////////////////////////////////////////////////////////////////////
PolyDrawLinePortal::PolyDrawLinePortal(line_t *src, line_t *dest, bool mirror) : Src(src), Dest(dest)
PolyDrawLinePortal::PolyDrawLinePortal(FLinePortal *portal) : Portal(portal)
{
StencilValue = RenderPolyScene::Instance()->GetNextStencilValue();
}
PolyDrawLinePortal::PolyDrawLinePortal(line_t *mirror) : Mirror(mirror)
{
// To do: do what R_EnterPortal and PortalDrawseg does
StencilValue = RenderPolyScene::Instance()->GetNextStencilValue();
}
void PolyDrawLinePortal::Render(int portalDepth)
{
SaveGlobals();
// To do: get this information from RenderPolyScene instead of duplicating the code..
double radPitch = ViewPitch.Normalized180().Radians();
double angx = cos(radPitch);
double angy = sin(radPitch) * glset.pixelstretch;
double alen = sqrt(angx*angx + angy*angy);
float adjustedPitch = (float)asin(angy / alen);
float adjustedViewAngle = (float)(ViewAngle - 90).Radians();
float ratio = WidescreenRatio;
float fovratio = (WidescreenRatio >= 1.3f) ? 1.333333f : ratio;
float fovy = (float)(2 * DAngle::ToDegrees(atan(tan(FieldOfView.Radians() / 2) / fovratio)).Degrees);
TriMatrix worldToView =
TriMatrix::rotate(adjustedPitch, 1.0f, 0.0f, 0.0f) *
TriMatrix::rotate(adjustedViewAngle, 0.0f, -1.0f, 0.0f) *
TriMatrix::scale(1.0f, glset.pixelstretch, 1.0f) *
TriMatrix::swapYZ() *
TriMatrix::translate((float)-ViewPos.X, (float)-ViewPos.Y, (float)-ViewPos.Z);
TriMatrix worldToClip = TriMatrix::perspective(fovy, ratio, 5.0f, 65535.0f) * worldToView;
RenderPortal.SetViewpoint(worldToClip, StencilValue);
RenderPortal.Render(portalDepth);
RestoreGlobals();
}
void PolyDrawLinePortal::RenderTranslucent(int portalDepth)
{
SaveGlobals();
RenderPortal.RenderTranslucent(portalDepth);
RestoreGlobals();
}
void PolyDrawLinePortal::SaveGlobals()
{
savedextralight = extralight;
savedpos = ViewPos;
savedangle = ViewAngle;
savedcamera = camera;
savedsector = viewsector;
savedvisibility = camera ? camera->renderflags & RF_INVISIBLE : ActorRenderFlags::FromInt(0);
savedViewPath[0] = ViewPath[0];
savedViewPath[1] = ViewPath[1];
if (Mirror)
{
DAngle startang = ViewAngle;
DVector3 startpos = ViewPos;
vertex_t *v1 = Mirror->v1;
// Reflect the current view behind the mirror.
if (Mirror->Delta().X == 0)
{ // vertical mirror
ViewPos.X = v1->fX() - startpos.X + v1->fX();
}
else if (Mirror->Delta().Y == 0)
{ // horizontal mirror
ViewPos.Y = v1->fY() - startpos.Y + v1->fY();
}
else
{ // any mirror
vertex_t *v2 = Mirror->v2;
double dx = v2->fX() - v1->fX();
double dy = v2->fY() - v1->fY();
double x1 = v1->fX();
double y1 = v1->fY();
double x = startpos.X;
double y = startpos.Y;
// the above two cases catch len == 0
double r = ((x - x1)*dx + (y - y1)*dy) / (dx*dx + dy*dy);
ViewPos.X = (x1 + r * dx) * 2 - x;
ViewPos.Y = (y1 + r * dy) * 2 - y;
}
ViewAngle = Mirror->Delta().Angle() * 2 - startang;
}
else
{
auto src = Portal->mOrigin;
auto dst = Portal->mDestination;
P_TranslatePortalXY(src, ViewPos.X, ViewPos.Y);
P_TranslatePortalZ(src, ViewPos.Z);
P_TranslatePortalAngle(src, ViewAngle);
P_TranslatePortalXY(src, ViewPath[0].X, ViewPath[0].Y);
P_TranslatePortalXY(src, ViewPath[1].X, ViewPath[1].Y);
if (!r_showviewer && camera && P_PointOnLineSidePrecise(ViewPath[0], dst) != P_PointOnLineSidePrecise(ViewPath[1], dst))
{
double distp = (ViewPath[0] - ViewPath[1]).Length();
if (distp > EQUAL_EPSILON)
{
double dist1 = (ViewPos - ViewPath[0]).Length();
double dist2 = (ViewPos - ViewPath[1]).Length();
if (dist1 + dist2 < distp + 1)
{
camera->renderflags |= RF_INVISIBLE;
}
}
}
/*if (Portal->mirror)
{
if (MirrorFlags & RF_XFLIP) MirrorFlags &= ~RF_XFLIP;
else MirrorFlags |= RF_XFLIP;
}*/
}
camera = nullptr;
//viewsector = Portal->mDestination;
R_SetViewAngle();
}
void PolyDrawLinePortal::RestoreGlobals()
{
if (!savedvisibility && camera) camera->renderflags &= ~RF_INVISIBLE;
camera = savedcamera;
viewsector = savedsector;
ViewPos = savedpos;
extralight = savedextralight;
ViewAngle = savedangle;
ViewPath[0] = savedViewPath[0];
ViewPath[1] = savedViewPath[1];
R_SetViewAngle();
}