mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-14 22:41:53 +00:00
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/*
|
|
** Voxel rendering
|
|
** Copyright (c) 1998-2016 Randy Heit
|
|
** Copyright (c) 2016 Magnus Norddahl
|
|
**
|
|
** This software is provided 'as-is', without any express or implied
|
|
** warranty. In no event will the authors be held liable for any damages
|
|
** arising from the use of this software.
|
|
**
|
|
** Permission is granted to anyone to use this software for any purpose,
|
|
** including commercial applications, and to alter it and redistribute it
|
|
** freely, subject to the following restrictions:
|
|
**
|
|
** 1. The origin of this software must not be misrepresented; you must not
|
|
** claim that you wrote the original software. If you use this software
|
|
** in a product, an acknowledgment in the product documentation would be
|
|
** appreciated but is not required.
|
|
** 2. Altered source versions must be plainly marked as such, and must not be
|
|
** misrepresented as being the original software.
|
|
** 3. This notice may not be removed or altered from any source distribution.
|
|
**
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
struct kvxslab_t;
|
|
struct FVoxelMipLevel;
|
|
struct FVoxel;
|
|
|
|
namespace swrenderer
|
|
{
|
|
// [RH] A c-buffer. Used for keeping track of offscreen voxel spans.
|
|
struct FCoverageBuffer
|
|
{
|
|
struct Span
|
|
{
|
|
Span *NextSpan;
|
|
short Start, Stop;
|
|
};
|
|
|
|
FCoverageBuffer(int size);
|
|
~FCoverageBuffer();
|
|
|
|
void Clear();
|
|
void InsertSpan(int listnum, int start, int stop);
|
|
Span *AllocSpan();
|
|
|
|
FMemArena SpanArena;
|
|
Span **Spans; // [0..NumLists-1] span lists
|
|
Span *FreeSpans;
|
|
unsigned int NumLists;
|
|
};
|
|
|
|
class RenderVoxel : public VisibleSprite
|
|
{
|
|
public:
|
|
static void Project(AActor *thing, DVector3 pos, FVoxelDef *voxel, const DVector2 &spriteScale, int renderflags, WaterFakeSide fakeside, F3DFloor *fakefloor, F3DFloor *fakeceiling, sector_t *current_sector, int spriteshade, bool foggy, FDynamicColormap *basecolormap);
|
|
|
|
static void Deinit();
|
|
|
|
protected:
|
|
bool IsVoxel() const override { return true; }
|
|
void Render(short *cliptop, short *clipbottom, int minZ, int maxZ) override;
|
|
|
|
private:
|
|
struct posang
|
|
{
|
|
FVector3 vpos; // view origin
|
|
FAngle vang; // view angle
|
|
};
|
|
|
|
posang pa;
|
|
DAngle Angle;
|
|
fixed_t xscale;
|
|
FVoxel *voxel;
|
|
|
|
uint32_t Translation;
|
|
uint32_t FillColor;
|
|
|
|
enum { DVF_OFFSCREEN = 1, DVF_SPANSONLY = 2, DVF_MIRRORED = 4 };
|
|
|
|
static void FillBox(DVector3 origin, double extentX, double extentY, int color, short *cliptop, short *clipbottom, bool viewspace, bool pixelstretch);
|
|
|
|
static kvxslab_t *GetSlabStart(const FVoxelMipLevel &mip, int x, int y);
|
|
static kvxslab_t *GetSlabEnd(const FVoxelMipLevel &mip, int x, int y);
|
|
static kvxslab_t *NextSlab(kvxslab_t *slab);
|
|
|
|
static void CheckOffscreenBuffer(int width, int height, bool spansonly);
|
|
|
|
static FCoverageBuffer *OffscreenCoverageBuffer;
|
|
static int OffscreenBufferWidth;
|
|
static int OffscreenBufferHeight;
|
|
static uint8_t *OffscreenColorBuffer;
|
|
};
|
|
}
|