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62 lines
2 KiB
C++
62 lines
2 KiB
C++
/*
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** Voxel rendering
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** Copyright (c) 1998-2016 Randy Heit
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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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struct kvxslab_t;
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namespace swrenderer
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{
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struct vissprite_t;
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void R_DrawVisVoxel(vissprite_t *sprite, int minZ, int maxZ, short *cliptop, short *clipbottom);
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void R_FillBox(DVector3 origin, double extentX, double extentY, int color, short *cliptop, short *clipbottom, bool viewspace, bool pixelstretch);
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kvxslab_t *R_GetSlabStart(const FVoxelMipLevel &mip, int x, int y);
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kvxslab_t *R_GetSlabEnd(const FVoxelMipLevel &mip, int x, int y);
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kvxslab_t *R_NextSlab(kvxslab_t *slab);
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void R_CheckOffscreenBuffer(int width, int height, bool spansonly);
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void R_DeinitRenderVoxel();
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// [RH] A c-buffer. Used for keeping track of offscreen voxel spans.
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struct FCoverageBuffer
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{
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struct Span
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{
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Span *NextSpan;
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short Start, Stop;
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};
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FCoverageBuffer(int size);
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~FCoverageBuffer();
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void Clear();
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void InsertSpan(int listnum, int start, int stop);
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Span *AllocSpan();
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FMemArena SpanArena;
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Span **Spans; // [0..NumLists-1] span lists
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Span *FreeSpans;
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unsigned int NumLists;
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};
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}
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