91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/*
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** Polygon Doom software renderer
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** Copyright (c) 2016 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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#pragma once
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#include <vector>
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#include <memory>
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#include <algorithm>
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#include <functional>
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#include "doomdata.h"
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#include "r_utility.h"
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#include "polyrenderer/drawers/poly_triangle.h"
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#include "poly_playersprite.h"
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#include "poly_cull.h"
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class PolyTranslucentObject
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{
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public:
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PolyTranslucentObject(uint32_t subsectorDepth = 0, double distanceSquared = 0.0) : subsectorDepth(subsectorDepth), DistanceSquared(distanceSquared) { }
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virtual ~PolyTranslucentObject() { }
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virtual void Render(PolyRenderThread *thread, const TriMatrix &worldToClip, const PolyClipPlane &portalPlane) = 0;
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bool operator<(const PolyTranslucentObject &other) const
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{
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return subsectorDepth != other.subsectorDepth ? subsectorDepth < other.subsectorDepth : DistanceSquared < other.DistanceSquared;
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}
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uint32_t subsectorDepth;
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double DistanceSquared;
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};
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class PolyDrawSectorPortal;
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class PolyDrawLinePortal;
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class PolyPortalSegment;
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// Renders everything from a specific viewpoint
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class RenderPolyScene
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{
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public:
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RenderPolyScene();
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~RenderPolyScene();
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void SetViewpoint(const TriMatrix &worldToClip, const PolyClipPlane &portalPlane, uint32_t stencilValue);
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void Render(int portalDepth);
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void RenderTranslucent(int portalDepth);
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static const uint32_t SkySubsectorDepth = 0x7fffffff;
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line_t *LastPortalLine = nullptr;
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private:
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void RenderPortals(int portalDepth);
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void RenderSectors();
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void RenderSubsector(PolyRenderThread *thread, subsector_t *sub, uint32_t subsectorDepth);
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void RenderLine(PolyRenderThread *thread, subsector_t *sub, seg_t *line, sector_t *frontsector, uint32_t subsectorDepth);
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void RenderSprite(PolyRenderThread *thread, AActor *thing, double sortDistance, const DVector2 &left, const DVector2 &right);
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void RenderSprite(PolyRenderThread *thread, AActor *thing, double sortDistance, DVector2 left, DVector2 right, double t1, double t2, void *node);
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void RenderPolySubsector(PolyRenderThread *thread, subsector_t *sub, uint32_t subsectorDepth, sector_t *frontsector);
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void RenderPolyNode(PolyRenderThread *thread, void *node, uint32_t subsectorDepth, sector_t *frontsector);
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static int PointOnSide(const DVector2 &pos, const node_t *node);
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TriMatrix WorldToClip;
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PolyClipPlane PortalPlane;
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uint32_t StencilValue = 0;
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PolyCull Cull;
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bool PortalSegmentsAdded = false;
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std::vector<std::vector<PolyTranslucentObject *>> TranslucentObjects;
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std::vector<std::unique_ptr<PolyDrawSectorPortal>> SectorPortals;
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std::vector<std::unique_ptr<PolyDrawLinePortal>> LinePortals;
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};
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