OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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Add portal plane clipping

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This commit is contained in:
Magnus Norddahl 2016-11-26 09:01:58 +01:00
commit 8bbb63e913
6 changed files with 39 additions and 8 deletions
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16
src/r_poly_portal.cpp
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@ -45,16 +45,17 @@ RenderPolyPortal::~RenderPolyPortal()
{
}
void RenderPolyPortal::SetViewpoint(const TriMatrix &worldToClip, uint32_t stencilValue)
void RenderPolyPortal::SetViewpoint(const TriMatrix &worldToClip, const Vec4f &portalPlane, uint32_t stencilValue)
{
WorldToClip = worldToClip;
StencilValue = stencilValue;
PortalPlane = portalPlane;
}
void RenderPolyPortal::Render(int portalDepth)
{
ClearBuffers();
Cull.CullScene(WorldToClip);
Cull.CullScene(WorldToClip, PortalPlane);
RenderSectors();
RenderPortals(portalDepth);
}
@ -340,7 +341,7 @@ void PolyDrawSectorPortal::Render(int portalDepth)
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.SetViewpoint(worldToClip, Vec4f(0.0f), StencilValue);
RenderPortal.Render(portalDepth);
RestoreGlobals();
@ -440,7 +441,14 @@ void PolyDrawLinePortal::Render(int portalDepth)
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);
// Calculate plane clipping
DVector2 planePos = Portal->mDestination->v1->fPos();
DVector2 planeNormal = (Portal->mDestination->v2->fPos() - Portal->mDestination->v1->fPos()).Rotated90CW();
planeNormal.MakeUnit();
double planeD = -(planeNormal | (planePos + planeNormal * 5.0));
Vec4f portalPlane((float)planeNormal.X, (float)planeNormal.Y, 0.0f, (float)planeD);
RenderPortal.SetViewpoint(worldToClip, portalPlane, StencilValue);
RenderPortal.Render(portalDepth);
RestoreGlobals();