mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-08 14:00:43 +00:00
1f723c10ae
- Added CF_INTERPVIEW flag for players. A_SetPitch/A_SetAngle and the similar ACS APROPs set this when changing an angle. This forces the renderer to interpolate the view angles instead of updating with the latest mouse positions. The effect lasts one tick.
1104 lines
27 KiB
C++
1104 lines
27 KiB
C++
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION:
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// Rendering main loop and setup functions,
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// utility functions (BSP, geometry, trigonometry).
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// See tables.c, too.
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//
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//-----------------------------------------------------------------------------
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// HEADER FILES ------------------------------------------------------------
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#include <stdlib.h>
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#include <math.h>
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#include "templates.h"
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#include "doomdef.h"
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#include "d_net.h"
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#include "doomstat.h"
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#include "m_random.h"
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#include "m_bbox.h"
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#include "p_local.h"
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#include "r_sky.h"
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#include "st_stuff.h"
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#include "c_cvars.h"
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#include "c_dispatch.h"
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#include "v_video.h"
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#include "stats.h"
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#include "i_video.h"
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#include "i_system.h"
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#include "a_sharedglobal.h"
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#include "r_data/r_translate.h"
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#include "p_3dmidtex.h"
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#include "r_data/r_interpolate.h"
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#include "v_palette.h"
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#include "po_man.h"
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#include "p_effect.h"
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#include "st_start.h"
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#include "v_font.h"
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#include "r_renderer.h"
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#include "r_data/colormaps.h"
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#include "farchive.h"
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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extern bool DrawFSHUD; // [RH] Defined in d_main.cpp
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EXTERN_CVAR (Bool, cl_capfps)
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extern lighttable_t* fixedcolormap;
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extern FSpecialColormap*realfixedcolormap;
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// TYPES -------------------------------------------------------------------
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struct InterpolationViewer
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{
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AActor *ViewActor;
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int otic;
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fixed_t oviewx, oviewy, oviewz;
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fixed_t nviewx, nviewy, nviewz;
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int oviewpitch, nviewpitch;
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angle_t oviewangle, nviewangle;
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};
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// PRIVATE DATA DECLARATIONS -----------------------------------------------
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static TArray<InterpolationViewer> PastViewers;
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static FRandom pr_torchflicker ("TorchFlicker");
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static FRandom pr_hom;
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static bool NoInterpolateView;
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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CVAR (Bool, r_deathcamera, false, CVAR_ARCHIVE)
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CVAR (Int, r_clearbuffer, 0, 0)
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CVAR (Bool, r_drawvoxels, true, 0)
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CVAR (Bool, r_drawplayersprites, true, 0) // [RH] Draw player sprites?
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DCanvas *RenderTarget; // [RH] canvas to render to
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int viewwindowx;
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int viewwindowy;
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fixed_t viewx;
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fixed_t viewy;
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fixed_t viewz;
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int viewpitch;
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extern "C"
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{
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int viewwidth;
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int viewheight;
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int centerx;
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int centery;
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int centerxwide;
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}
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int otic;
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angle_t viewangle;
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sector_t *viewsector;
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fixed_t viewcos, viewtancos;
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fixed_t viewsin, viewtansin;
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AActor *camera; // [RH] camera to draw from. doesn't have to be a player
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fixed_t r_TicFrac; // [RH] Fractional tic to render
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DWORD r_FrameTime; // [RH] Time this frame started drawing (in ms)
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bool r_NoInterpolate;
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bool r_showviewer;
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angle_t LocalViewAngle;
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int LocalViewPitch;
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bool LocalKeyboardTurner;
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float LastFOV;
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int WidescreenRatio;
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int setblocks;
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int extralight;
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bool setsizeneeded;
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fixed_t FocalTangent;
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unsigned int R_OldBlend = ~0;
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int validcount = 1; // increment every time a check is made
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int FieldOfView = 2048; // Fineangles in the SCREENWIDTH wide window
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FCanvasTextureInfo *FCanvasTextureInfo::List;
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// CODE --------------------------------------------------------------------
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static void R_Shutdown ();
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//==========================================================================
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//
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// SlopeDiv
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//
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// Utility function, called by R_PointToAngle.
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//
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//==========================================================================
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angle_t SlopeDiv (unsigned int num, unsigned den)
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{
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unsigned int ans;
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if (den < 512)
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return (ANG45 - 1); //tantoangle[SLOPERANGE]
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ans = (num << 3) / (den >> 8);
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return ans <= SLOPERANGE ? tantoangle[ans] : (ANG45 - 1);
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}
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//==========================================================================
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//
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// R_PointToAngle
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//
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// To get a global angle from cartesian coordinates, the coordinates are
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// flipped until they are in the first octant of the coordinate system,
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// then the y (<=x) is scaled and divided by x to get a tangent (slope)
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// value which is looked up in the tantoangle[] table.
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//
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//==========================================================================
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angle_t R_PointToAngle2 (fixed_t x1, fixed_t y1, fixed_t x, fixed_t y)
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{
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x -= x1;
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y -= y1;
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if ((x | y) == 0)
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{
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return 0;
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}
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// We need to be aware of overflows here. If the values get larger than INT_MAX/4
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// this code won't work anymore.
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if (x < INT_MAX/4 && x > -INT_MAX/4 && y < INT_MAX/4 && y > -INT_MAX/4)
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{
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if (x >= 0)
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{
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if (y >= 0)
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{
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if (x > y)
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{ // octant 0
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return SlopeDiv(y, x);
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}
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else
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{ // octant 1
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return ANG90 - 1 - SlopeDiv(x, y);
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}
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}
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else // y < 0
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{
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y = -y;
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if (x > y)
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{ // octant 8
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return 0 - SlopeDiv(y, x);
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}
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else
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{ // octant 7
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return ANG270 + SlopeDiv(x, y);
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}
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}
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}
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else // x < 0
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{
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x = -x;
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if (y >= 0)
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{
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if (x > y)
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{ // octant 3
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return ANG180 - 1 - SlopeDiv(y, x);
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}
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else
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{ // octant 2
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return ANG90 + SlopeDiv(x, y);
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}
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}
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else // y < 0
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{
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y = -y;
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if (x > y)
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{ // octant 4
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return ANG180 + SlopeDiv(y, x);
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}
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else
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{ // octant 5
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return ANG270 - 1 - SlopeDiv(x, y);
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}
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}
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}
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}
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else
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{
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// we have to use the slower but more precise floating point atan2 function here.
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return xs_RoundToUInt(atan2(double(y), double(x)) * (ANGLE_180/M_PI));
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}
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}
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//==========================================================================
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//
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// R_InitPointToAngle
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//
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//==========================================================================
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void R_InitPointToAngle (void)
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{
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double f;
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int i;
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//
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// slope (tangent) to angle lookup
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//
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for (i = 0; i <= SLOPERANGE; i++)
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{
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f = atan2 ((double)i, (double)SLOPERANGE) / (6.28318530718 /* 2*pi */);
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tantoangle[i] = (angle_t)(0xffffffff*f);
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}
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}
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//==========================================================================
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//
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// R_PointToDist2
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//
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// Returns the distance from (0,0) to some other point. In a
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// floating point environment, we'd probably be better off using the
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// Pythagorean Theorem to determine the result.
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//
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// killough 5/2/98: simplified
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// [RH] Simplified further [sin (t + 90 deg) == cos (t)]
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// Not used. Should it go away?
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//
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//==========================================================================
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fixed_t R_PointToDist2 (fixed_t dx, fixed_t dy)
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{
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dx = abs (dx);
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dy = abs (dy);
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if ((dx | dy) == 0)
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{
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return 0;
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}
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if (dy > dx)
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{
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swapvalues (dx, dy);
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}
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return FixedDiv (dx, finecosine[tantoangle[FixedDiv (dy, dx) >> DBITS] >> ANGLETOFINESHIFT]);
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}
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//==========================================================================
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//
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// R_InitTables
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//
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//==========================================================================
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void R_InitTables (void)
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{
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int i;
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const double pimul = PI*2/FINEANGLES;
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// viewangle tangent table
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finetangent[0] = (fixed_t)(FRACUNIT*tan ((0.5-FINEANGLES/4)*pimul)+0.5);
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for (i = 1; i < FINEANGLES/2; i++)
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{
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finetangent[i] = (fixed_t)(FRACUNIT*tan ((i-FINEANGLES/4)*pimul)+0.5);
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}
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// finesine table
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for (i = 0; i < FINEANGLES/4; i++)
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{
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finesine[i] = (fixed_t)(FRACUNIT * sin (i*pimul));
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}
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for (i = 0; i < FINEANGLES/4; i++)
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{
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finesine[i+FINEANGLES/4] = finesine[FINEANGLES/4-1-i];
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}
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for (i = 0; i < FINEANGLES/2; i++)
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{
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finesine[i+FINEANGLES/2] = -finesine[i];
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}
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finesine[FINEANGLES/4] = FRACUNIT;
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finesine[FINEANGLES*3/4] = -FRACUNIT;
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memcpy (&finesine[FINEANGLES], &finesine[0], sizeof(angle_t)*FINEANGLES/4);
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}
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//==========================================================================
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//
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// R_SetFOV
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//
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// Changes the field of view in degrees
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//
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//==========================================================================
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void R_SetFOV (float fov)
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{
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if (fov < 5.f)
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fov = 5.f;
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else if (fov > 170.f)
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fov = 170.f;
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if (fov != LastFOV)
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{
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LastFOV = fov;
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FieldOfView = (int)(fov * (float)FINEANGLES / 360.f);
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setsizeneeded = true;
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}
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}
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//==========================================================================
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//
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// R_GetFOV
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//
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// Returns the current field of view in degrees
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//
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//==========================================================================
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float R_GetFOV ()
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{
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return LastFOV;
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}
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//==========================================================================
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//
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// R_SetViewSize
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//
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// Do not really change anything here, because it might be in the middle
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// of a refresh. The change will take effect next refresh.
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//
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//==========================================================================
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void R_SetViewSize (int blocks)
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{
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setsizeneeded = true;
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setblocks = blocks;
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}
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//==========================================================================
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//
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// R_SetWindow
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//
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//==========================================================================
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void R_SetWindow (int windowSize, int fullWidth, int fullHeight, int stHeight)
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{
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int trueratio;
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if (windowSize >= 11)
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{
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viewwidth = fullWidth;
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freelookviewheight = viewheight = fullHeight;
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}
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else if (windowSize == 10)
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{
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viewwidth = fullWidth;
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viewheight = stHeight;
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freelookviewheight = fullHeight;
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}
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else
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{
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viewwidth = ((setblocks*fullWidth)/10) & (~15);
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viewheight = ((setblocks*stHeight)/10)&~7;
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freelookviewheight = ((setblocks*fullHeight)/10)&~7;
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}
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// If the screen is approximately 16:9 or 16:10, consider it widescreen.
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WidescreenRatio = CheckRatio (fullWidth, fullHeight, &trueratio);
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DrawFSHUD = (windowSize == 11);
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// [RH] Sky height fix for screens not 200 (or 240) pixels tall
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R_InitSkyMap ();
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centery = viewheight/2;
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centerx = viewwidth/2;
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if (WidescreenRatio & 4)
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{
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centerxwide = centerx;
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}
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else
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{
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centerxwide = centerx * BaseRatioSizes[WidescreenRatio][3] / 48;
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}
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int fov = FieldOfView;
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// For widescreen displays, increase the FOV so that the middle part of the
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// screen that would be visible on a 4:3 display has the requested FOV.
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if (centerxwide != centerx)
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{ // centerxwide is what centerx would be if the display was not widescreen
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fov = int(atan(double(centerx)*tan(double(fov)*M_PI/(FINEANGLES))/double(centerxwide))*(FINEANGLES)/M_PI);
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if (fov > 170*FINEANGLES/360)
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fov = 170*FINEANGLES/360;
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}
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FocalTangent = finetangent[FINEANGLES/4+fov/2];
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Renderer->SetWindow(windowSize, fullWidth, fullHeight, stHeight, trueratio);
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}
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//==========================================================================
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//
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// R_ExecuteSetViewSize
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//
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//==========================================================================
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void R_ExecuteSetViewSize ()
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{
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setsizeneeded = false;
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V_SetBorderNeedRefresh();
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R_SetWindow (setblocks, SCREENWIDTH, SCREENHEIGHT, ST_Y);
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// Handle resize, e.g. smaller view windows with border and/or status bar.
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viewwindowx = (screen->GetWidth() - viewwidth) >> 1;
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// Same with base row offset.
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viewwindowy = (viewwidth == screen->GetWidth()) ? 0 : (ST_Y - viewheight) >> 1;
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}
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//==========================================================================
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//
|
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// CVAR screenblocks
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//
|
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// Selects the size of the visible window
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//
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//==========================================================================
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CUSTOM_CVAR (Int, screenblocks, 10, CVAR_ARCHIVE)
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{
|
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if (self > 12)
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self = 12;
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else if (self < 3)
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self = 3;
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else
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R_SetViewSize (self);
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}
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|
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//==========================================================================
|
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//
|
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// R_PointInSubsector
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//
|
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//==========================================================================
|
|
|
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subsector_t *R_PointInSubsector (fixed_t x, fixed_t y)
|
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{
|
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node_t *node;
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int side;
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|
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// single subsector is a special case
|
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if (numnodes == 0)
|
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return subsectors;
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|
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node = nodes + numnodes - 1;
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do
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{
|
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side = R_PointOnSide (x, y, node);
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node = (node_t *)node->children[side];
|
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}
|
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while (!((size_t)node & 1));
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|
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return (subsector_t *)((BYTE *)node - 1);
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}
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|
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//==========================================================================
|
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//
|
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// R_Init
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_Init ()
|
|
{
|
|
atterm (R_Shutdown);
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|
|
StartScreen->Progress();
|
|
V_InitFonts();
|
|
StartScreen->Progress();
|
|
// Colormap init moved back to InitPalette()
|
|
//R_InitColormaps ();
|
|
//StartScreen->Progress();
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|
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R_InitPointToAngle ();
|
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R_InitTables ();
|
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R_InitTranslationTables ();
|
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R_SetViewSize (screenblocks);
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Renderer->Init();
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}
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|
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//==========================================================================
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//
|
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// R_Shutdown
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//
|
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//==========================================================================
|
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|
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static void R_Shutdown ()
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{
|
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R_DeinitTranslationTables();
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R_DeinitColormaps ();
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FCanvasTextureInfo::EmptyList();
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}
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|
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//==========================================================================
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//
|
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// R_InterpolateView
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//
|
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//==========================================================================
|
|
|
|
//CVAR (Int, tf, 0, 0)
|
|
EXTERN_CVAR (Bool, cl_noprediction)
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|
|
void R_InterpolateView (player_t *player, fixed_t frac, InterpolationViewer *iview)
|
|
{
|
|
// frac = tf;
|
|
if (NoInterpolateView)
|
|
{
|
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NoInterpolateView = false;
|
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iview->oviewx = iview->nviewx;
|
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iview->oviewy = iview->nviewy;
|
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iview->oviewz = iview->nviewz;
|
|
iview->oviewpitch = iview->nviewpitch;
|
|
iview->oviewangle = iview->nviewangle;
|
|
}
|
|
viewx = iview->oviewx + FixedMul (frac, iview->nviewx - iview->oviewx);
|
|
viewy = iview->oviewy + FixedMul (frac, iview->nviewy - iview->oviewy);
|
|
viewz = iview->oviewz + FixedMul (frac, iview->nviewz - iview->oviewz);
|
|
if (player != NULL &&
|
|
!(player->cheats & CF_INTERPVIEW) &&
|
|
player - players == consoleplayer &&
|
|
camera == player->mo &&
|
|
!demoplayback &&
|
|
iview->nviewx == camera->x &&
|
|
iview->nviewy == camera->y &&
|
|
!(player->cheats & (CF_TOTALLYFROZEN|CF_FROZEN)) &&
|
|
player->playerstate == PST_LIVE &&
|
|
player->mo->reactiontime == 0 &&
|
|
!NoInterpolateView &&
|
|
!paused &&
|
|
(!netgame || !cl_noprediction) &&
|
|
!LocalKeyboardTurner)
|
|
{
|
|
viewangle = iview->nviewangle + (LocalViewAngle & 0xFFFF0000);
|
|
|
|
fixed_t delta = player->centering ? 0 : -(signed)(LocalViewPitch & 0xFFFF0000);
|
|
|
|
viewpitch = iview->nviewpitch;
|
|
if (delta > 0)
|
|
{
|
|
// Avoid overflowing viewpitch (can happen when a netgame is stalled)
|
|
if (viewpitch + delta <= viewpitch)
|
|
{
|
|
viewpitch = player->MaxPitch;
|
|
}
|
|
else
|
|
{
|
|
viewpitch = MIN(viewpitch + delta, player->MaxPitch);
|
|
}
|
|
}
|
|
else if (delta < 0)
|
|
{
|
|
// Avoid overflowing viewpitch (can happen when a netgame is stalled)
|
|
if (viewpitch + delta >= viewpitch)
|
|
{
|
|
viewpitch = player->MinPitch;
|
|
}
|
|
else
|
|
{
|
|
viewpitch = MAX(viewpitch + delta, player->MinPitch);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
viewpitch = iview->oviewpitch + FixedMul (frac, iview->nviewpitch - iview->oviewpitch);
|
|
viewangle = iview->oviewangle + FixedMul (frac, iview->nviewangle - iview->oviewangle);
|
|
}
|
|
|
|
// Due to interpolation this is not necessarily the same as the sector the camera is in.
|
|
viewsector = R_PointInSubsector(viewx, viewy)->sector;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// R_ResetViewInterpolation
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_ResetViewInterpolation ()
|
|
{
|
|
NoInterpolateView = true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// R_SetViewAngle
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_SetViewAngle ()
|
|
{
|
|
angle_t ang = viewangle >> ANGLETOFINESHIFT;
|
|
|
|
viewsin = finesine[ang];
|
|
viewcos = finecosine[ang];
|
|
|
|
viewtansin = FixedMul (FocalTangent, viewsin);
|
|
viewtancos = FixedMul (FocalTangent, viewcos);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FindPastViewer
|
|
//
|
|
//==========================================================================
|
|
|
|
static InterpolationViewer *FindPastViewer (AActor *actor)
|
|
{
|
|
for (unsigned int i = 0; i < PastViewers.Size(); ++i)
|
|
{
|
|
if (PastViewers[i].ViewActor == actor)
|
|
{
|
|
return &PastViewers[i];
|
|
}
|
|
}
|
|
|
|
// Not found, so make a new one
|
|
InterpolationViewer iview = { NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
iview.ViewActor = actor;
|
|
iview.otic = -1;
|
|
return &PastViewers[PastViewers.Push (iview)];
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// R_FreePastViewers
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_FreePastViewers ()
|
|
{
|
|
PastViewers.Clear ();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// R_ClearPastViewer
|
|
//
|
|
// If the actor changed in a non-interpolatable way, remove it.
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_ClearPastViewer (AActor *actor)
|
|
{
|
|
for (unsigned int i = 0; i < PastViewers.Size(); ++i)
|
|
{
|
|
if (PastViewers[i].ViewActor == actor)
|
|
{
|
|
// Found it, so remove it.
|
|
if (i == PastViewers.Size())
|
|
{
|
|
PastViewers.Delete (i);
|
|
}
|
|
else
|
|
{
|
|
PastViewers.Pop (PastViewers[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// R_SetupFrame
|
|
//
|
|
//==========================================================================
|
|
|
|
void R_SetupFrame (AActor *actor)
|
|
{
|
|
if (actor == NULL)
|
|
{
|
|
I_Error ("Tried to render from a NULL actor.");
|
|
}
|
|
|
|
player_t *player = actor->player;
|
|
unsigned int newblend;
|
|
InterpolationViewer *iview;
|
|
|
|
if (player != NULL && player->mo == actor)
|
|
{ // [RH] Use camera instead of viewplayer
|
|
camera = player->camera;
|
|
if (camera == NULL)
|
|
{
|
|
camera = player->camera = player->mo;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
camera = actor;
|
|
}
|
|
|
|
if (camera == NULL)
|
|
{
|
|
I_Error ("You lost your body. Bad dehacked work is likely to blame.");
|
|
}
|
|
|
|
iview = FindPastViewer (camera);
|
|
|
|
int nowtic = I_GetTime (false);
|
|
if (iview->otic != -1 && nowtic > iview->otic)
|
|
{
|
|
iview->otic = nowtic;
|
|
iview->oviewx = iview->nviewx;
|
|
iview->oviewy = iview->nviewy;
|
|
iview->oviewz = iview->nviewz;
|
|
iview->oviewpitch = iview->nviewpitch;
|
|
iview->oviewangle = iview->nviewangle;
|
|
}
|
|
|
|
if (player != NULL && gamestate != GS_TITLELEVEL &&
|
|
((player->cheats & CF_CHASECAM) || (r_deathcamera && camera->health <= 0)))
|
|
{
|
|
// [RH] Use chasecam view
|
|
P_AimCamera (camera, iview->nviewx, iview->nviewy, iview->nviewz, viewsector);
|
|
r_showviewer = true;
|
|
}
|
|
else
|
|
{
|
|
iview->nviewx = camera->x;
|
|
iview->nviewy = camera->y;
|
|
iview->nviewz = camera->player ? camera->player->viewz : camera->z + camera->GetClass()->Meta.GetMetaFixed(AMETA_CameraHeight);
|
|
viewsector = camera->Sector;
|
|
r_showviewer = false;
|
|
}
|
|
iview->nviewpitch = camera->pitch;
|
|
if (camera->player != 0)
|
|
{
|
|
player = camera->player;
|
|
}
|
|
|
|
iview->nviewangle = camera->angle;
|
|
if (iview->otic == -1 || r_NoInterpolate)
|
|
{
|
|
R_ResetViewInterpolation ();
|
|
iview->otic = nowtic;
|
|
}
|
|
|
|
r_TicFrac = I_GetTimeFrac (&r_FrameTime);
|
|
if (cl_capfps || r_NoInterpolate)
|
|
{
|
|
r_TicFrac = FRACUNIT;
|
|
}
|
|
|
|
R_InterpolateView (player, r_TicFrac, iview);
|
|
|
|
#ifdef TEST_X
|
|
viewx = TEST_X;
|
|
viewy = TEST_Y;
|
|
viewz = TEST_Z;
|
|
viewangle = TEST_ANGLE;
|
|
#endif
|
|
|
|
R_SetViewAngle ();
|
|
|
|
interpolator.DoInterpolations (r_TicFrac);
|
|
|
|
// Keep the view within the sector's floor and ceiling
|
|
fixed_t theZ = viewsector->ceilingplane.ZatPoint (viewx, viewy) - 4*FRACUNIT;
|
|
if (viewz > theZ)
|
|
{
|
|
viewz = theZ;
|
|
}
|
|
|
|
theZ = viewsector->floorplane.ZatPoint (viewx, viewy) + 4*FRACUNIT;
|
|
if (viewz < theZ)
|
|
{
|
|
viewz = theZ;
|
|
}
|
|
|
|
if (!paused)
|
|
{
|
|
int intensity = DEarthquake::StaticGetQuakeIntensity (camera);
|
|
if (intensity != 0)
|
|
{
|
|
viewx += ((pr_torchflicker() % (intensity<<2))
|
|
-(intensity<<1))<<FRACBITS;
|
|
viewy += ((pr_torchflicker() % (intensity<<2))
|
|
-(intensity<<1))<<FRACBITS;
|
|
}
|
|
}
|
|
|
|
extralight = camera->player ? camera->player->extralight : 0;
|
|
|
|
// killough 3/20/98, 4/4/98: select colormap based on player status
|
|
// [RH] Can also select a blend
|
|
newblend = 0;
|
|
|
|
TArray<lightlist_t> &lightlist = viewsector->e->XFloor.lightlist;
|
|
if (lightlist.Size() > 0)
|
|
{
|
|
for(unsigned int i = 0; i < lightlist.Size(); i++)
|
|
{
|
|
secplane_t *plane;
|
|
int viewside;
|
|
plane = (i < lightlist.Size()-1) ? &lightlist[i+1].plane : &viewsector->floorplane;
|
|
viewside = plane->PointOnSide(viewx, viewy, viewz);
|
|
// Reverse the direction of the test if the plane was downward facing.
|
|
// We want to know if the view is above it, whatever its orientation may be.
|
|
if (plane->c < 0)
|
|
viewside = -viewside;
|
|
if (viewside > 0)
|
|
{
|
|
// 3d floor 'fog' is rendered as a blending value
|
|
PalEntry blendv = lightlist[i].blend;
|
|
|
|
// If no alpha is set, use 50%
|
|
if (blendv.a==0 && blendv!=0) blendv.a=128;
|
|
newblend = blendv.d;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const sector_t *s = viewsector->GetHeightSec();
|
|
if (s != NULL)
|
|
{
|
|
newblend = s->floorplane.PointOnSide(viewx, viewy, viewz) < 0
|
|
? s->bottommap
|
|
: s->ceilingplane.PointOnSide(viewx, viewy, viewz) < 0
|
|
? s->topmap
|
|
: s->midmap;
|
|
if (APART(newblend) == 0 && newblend >= numfakecmaps)
|
|
newblend = 0;
|
|
}
|
|
}
|
|
|
|
// [RH] Don't override testblend unless entering a sector with a
|
|
// blend different from the previous sector's. Same goes with
|
|
// NormalLight's maps pointer.
|
|
if (R_OldBlend != newblend)
|
|
{
|
|
R_OldBlend = newblend;
|
|
if (APART(newblend))
|
|
{
|
|
BaseBlendR = RPART(newblend);
|
|
BaseBlendG = GPART(newblend);
|
|
BaseBlendB = BPART(newblend);
|
|
BaseBlendA = APART(newblend) / 255.f;
|
|
NormalLight.Maps = realcolormaps;
|
|
}
|
|
else
|
|
{
|
|
NormalLight.Maps = realcolormaps + NUMCOLORMAPS*256*newblend;
|
|
BaseBlendR = BaseBlendG = BaseBlendB = 0;
|
|
BaseBlendA = 0.f;
|
|
}
|
|
}
|
|
|
|
Renderer->CopyStackedViewParameters();
|
|
Renderer->SetupFrame(player);
|
|
|
|
validcount++;
|
|
|
|
if (RenderTarget == screen && r_clearbuffer != 0)
|
|
{
|
|
int color;
|
|
int hom = r_clearbuffer;
|
|
|
|
if (hom == 3)
|
|
{
|
|
hom = ((I_FPSTime() / 128) & 1) + 1;
|
|
}
|
|
if (hom == 1)
|
|
{
|
|
color = GPalette.BlackIndex;
|
|
}
|
|
else if (hom == 2)
|
|
{
|
|
color = GPalette.WhiteIndex;
|
|
}
|
|
else if (hom == 4)
|
|
{
|
|
color = (I_FPSTime() / 32) & 255;
|
|
}
|
|
else
|
|
{
|
|
color = pr_hom();
|
|
}
|
|
Renderer->ClearBuffer(color);
|
|
}
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
// FCanvasTextureInfo :: Add
|
|
//
|
|
// Assigns a camera to a canvas texture.
|
|
//
|
|
//==========================================================================
|
|
|
|
void FCanvasTextureInfo::Add (AActor *viewpoint, FTextureID picnum, int fov)
|
|
{
|
|
FCanvasTextureInfo *probe;
|
|
FCanvasTexture *texture;
|
|
|
|
if (!picnum.isValid())
|
|
{
|
|
return;
|
|
}
|
|
texture = static_cast<FCanvasTexture *>(TexMan[picnum]);
|
|
if (!texture->bHasCanvas)
|
|
{
|
|
Printf ("%s is not a valid target for a camera\n", texture->Name);
|
|
return;
|
|
}
|
|
|
|
// Is this texture already assigned to a camera?
|
|
for (probe = List; probe != NULL; probe = probe->Next)
|
|
{
|
|
if (probe->Texture == texture)
|
|
{
|
|
// Yes, change its assignment to this new camera
|
|
if (probe->Viewpoint != viewpoint || probe->FOV != fov)
|
|
{
|
|
texture->bFirstUpdate = true;
|
|
}
|
|
probe->Viewpoint = viewpoint;
|
|
probe->FOV = fov;
|
|
return;
|
|
}
|
|
}
|
|
// No, create a new assignment
|
|
probe = new FCanvasTextureInfo;
|
|
probe->Viewpoint = viewpoint;
|
|
probe->Texture = texture;
|
|
probe->PicNum = picnum;
|
|
probe->FOV = fov;
|
|
probe->Next = List;
|
|
texture->bFirstUpdate = true;
|
|
List = probe;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FCanvasTextureInfo :: UpdateAll
|
|
//
|
|
// Updates all canvas textures that were visible in the last frame.
|
|
//
|
|
//==========================================================================
|
|
|
|
void FCanvasTextureInfo::UpdateAll ()
|
|
{
|
|
FCanvasTextureInfo *probe;
|
|
|
|
// curse Doom's overuse of global variables in the renderer.
|
|
// These get clobbered by rendering to a camera texture but they need to be preserved so the final rendering can be done with the correct palette.
|
|
unsigned char *savecolormap = fixedcolormap;
|
|
FSpecialColormap *savecm = realfixedcolormap;
|
|
|
|
for (probe = List; probe != NULL; probe = probe->Next)
|
|
{
|
|
if (probe->Viewpoint != NULL && probe->Texture->bNeedsUpdate)
|
|
{
|
|
Renderer->RenderTextureView(probe->Texture, probe->Viewpoint, probe->FOV);
|
|
}
|
|
}
|
|
|
|
fixedcolormap = savecolormap;
|
|
realfixedcolormap = savecm;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FCanvasTextureInfo :: EmptyList
|
|
//
|
|
// Removes all camera->texture assignments.
|
|
//
|
|
//==========================================================================
|
|
|
|
void FCanvasTextureInfo::EmptyList ()
|
|
{
|
|
FCanvasTextureInfo *probe, *next;
|
|
|
|
for (probe = List; probe != NULL; probe = next)
|
|
{
|
|
next = probe->Next;
|
|
probe->Texture->Unload();
|
|
delete probe;
|
|
}
|
|
List = NULL;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FCanvasTextureInfo :: Serialize
|
|
//
|
|
// Reads or writes the current set of mappings in an archive.
|
|
//
|
|
//==========================================================================
|
|
|
|
void FCanvasTextureInfo::Serialize (FArchive &arc)
|
|
{
|
|
if (arc.IsStoring ())
|
|
{
|
|
FCanvasTextureInfo *probe;
|
|
|
|
for (probe = List; probe != NULL; probe = probe->Next)
|
|
{
|
|
if (probe->Texture != NULL && probe->Viewpoint != NULL)
|
|
{
|
|
arc << probe->Viewpoint << probe->FOV << probe->PicNum;
|
|
}
|
|
}
|
|
AActor *nullactor = NULL;
|
|
arc << nullactor;
|
|
}
|
|
else
|
|
{
|
|
AActor *viewpoint;
|
|
int fov;
|
|
FTextureID picnum;
|
|
|
|
EmptyList ();
|
|
while (arc << viewpoint, viewpoint != NULL)
|
|
{
|
|
arc << fov << picnum;
|
|
Add (viewpoint, picnum, fov);
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FCanvasTextureInfo :: Mark
|
|
//
|
|
// Marks all viewpoints in the list for the collector.
|
|
//
|
|
//==========================================================================
|
|
|
|
void FCanvasTextureInfo::Mark()
|
|
{
|
|
for (FCanvasTextureInfo *probe = List; probe != NULL; probe = probe->Next)
|
|
{
|
|
GC::Mark(probe->Viewpoint);
|
|
}
|
|
}
|
|
|