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Merge branch 'opengl-new-clipping-backport' into 'master'

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OpenGL new clipping backport

See merge request STJr/SRB2!315
This commit is contained in:
Monster Iestyn 2018-11-10 13:57:16 -05:00
commit c7e58b7cd5
9 changed files with 781 additions and 71 deletions
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33
SRB2.cbp
View file

@ -1174,6 +1174,39 @@ HW3SOUND for 3D hardware sound support
<Option target="Debug Mingw64/DirectX" />
<Option target="Release Mingw64/DirectX" />
</Unit>
<Unit filename="src/hardware/hw_clip.c">
<Option compilerVar="CC" />
<Option target="Debug Native/SDL" />
<Option target="Release Native/SDL" />
<Option target="Debug Mingw/SDL" />
<Option target="Release Mingw/SDL" />
<Option target="Debug Mingw/DirectX" />
<Option target="Release Mingw/DirectX" />
<Option target="Debug Any/Dummy" />
<Option target="Release Any/Dummy" />
<Option target="Debug Linux/SDL" />
<Option target="Release Linux/SDL" />
<Option target="Debug Mingw64/SDL" />
<Option target="Release Mingw64/SDL" />
<Option target="Debug Mingw64/DirectX" />
<Option target="Release Mingw64/DirectX" />
</Unit>
<Unit filename="src/hardware/hw_clip.h">
<Option target="Debug Native/SDL" />
<Option target="Release Native/SDL" />
<Option target="Debug Mingw/SDL" />
<Option target="Release Mingw/SDL" />
<Option target="Debug Mingw/DirectX" />
<Option target="Release Mingw/DirectX" />
<Option target="Debug Any/Dummy" />
<Option target="Release Any/Dummy" />
<Option target="Debug Linux/SDL" />
<Option target="Release Linux/SDL" />
<Option target="Debug Mingw64/SDL" />
<Option target="Release Mingw64/SDL" />
<Option target="Debug Mingw64/DirectX" />
<Option target="Release Mingw64/DirectX" />
</Unit>
<Unit filename="src/hardware/hw_data.h">
<Option target="Debug Native/SDL" />
<Option target="Release Native/SDL" />

2
src/CMakeLists.txt
View file

@ -350,6 +350,7 @@ if(${SRB2_CONFIG_HWRENDER})
set(SRB2_HWRENDER_SOURCES
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_bsp.c
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_cache.c
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_clip.c
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_draw.c
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_light.c
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_main.c
@ -358,6 +359,7 @@ if(${SRB2_CONFIG_HWRENDER})
)
set (SRB2_HWRENDER_HEADERS
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_clip.h
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_data.h
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_defs.h
${CMAKE_CURRENT_SOURCE_DIR}/hardware/hw_dll.h

12
src/Makefile
View file

@ -269,7 +269,7 @@ ifndef DC
endif
OPTS+=-DHWRENDER
OBJS+=$(OBJDIR)/hw_bsp.o $(OBJDIR)/hw_draw.o $(OBJDIR)/hw_light.o \
$(OBJDIR)/hw_main.o $(OBJDIR)/hw_md2.o $(OBJDIR)/hw_cache.o $(OBJDIR)/hw_trick.o
$(OBJDIR)/hw_main.o $(OBJDIR)/hw_clip.o $(OBJDIR)/hw_md2.o $(OBJDIR)/hw_cache.o $(OBJDIR)/hw_trick.o
endif
ifdef NOHS
@ -719,7 +719,7 @@ ifdef MINGW
$(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
$(CC) $(CFLAGS) $(WFLAGS) -c $< -o $@
@ -727,7 +727,7 @@ else
$(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
$(CC) $(CFLAGS) $(WFLAGS) -I/usr/X11R6/include -c $< -o $@
@ -880,7 +880,7 @@ ifndef NOHW
$(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h \
doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@
@ -888,7 +888,7 @@ $(OBJDIR)/r_opengl.o: hardware/r_opengl/r_opengl.c hardware/r_opengl/r_opengl.h
$(OBJDIR)/ogl_win.o: hardware/r_opengl/ogl_win.c hardware/r_opengl/r_opengl.h \
doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@
@ -896,7 +896,7 @@ $(OBJDIR)/ogl_win.o: hardware/r_opengl/ogl_win.c hardware/r_opengl/r_opengl.h \
$(OBJDIR)/r_minigl.o: hardware/r_minigl/r_minigl.c hardware/r_opengl/r_opengl.h \
doomdef.h doomtype.h g_state.h m_swap.h hardware/hw_drv.h screen.h \
command.h hardware/hw_data.h hardware/hw_glide.h hardware/hw_defs.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h am_map.h \
hardware/hw_md2.h hardware/hw_glob.h hardware/hw_main.h hardware/hw_clip.h am_map.h \
d_event.h d_player.h p_pspr.h m_fixed.h tables.h info.h d_think.h \
p_mobj.h doomdata.h d_ticcmd.h r_defs.h hardware/hw_dll.h
$(CC) $(CFLAGS) $(WFLAGS) -D_WINDOWS -mwindows -c $< -o $@

7
src/doomdef.h
View file

@ -502,4 +502,11 @@ extern const char *compdate, *comptime, *comprevision, *compbranch;
/// \note Required for proper collision with moving sloped surfaces that have sector specials on them.
//#define SECTORSPECIALSAFTERTHINK
/// FINALLY some real clipping that doesn't make walls dissappear AND speeds the game up
/// (that was the original comment from SRB2CB, sadly it is a lie and actually slows game down)
/// on the bright side it fixes some weird issues with translucent walls
/// \note SRB2CB port.
/// SRB2CB itself ported this from PrBoom+
#define NEWCLIP
#endif // __DOOMDEF__

465
src/hardware/hw_clip.c Normal file
View file

@ -0,0 +1,465 @@
/* Emacs style mode select -*- C++ -*-
*-----------------------------------------------------------------------------
*
*
* PrBoom: a Doom port merged with LxDoom and LSDLDoom
* based on BOOM, a modified and improved DOOM engine
* Copyright (C) 1999 by
* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
* Copyright (C) 1999-2000 by
* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
* Copyright 2005, 2006 by
* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* DESCRIPTION:
*
*---------------------------------------------------------------------
*/
/*
*
** gl_clipper.cpp
**
** Handles visibility checks.
** Loosely based on the JDoom clipper.
**
**---------------------------------------------------------------------------
** Copyright 2003 Tim Stump
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include <math.h>
#include "../v_video.h"
#include "hw_clip.h"
#include "hw_glob.h"
#include "../r_state.h"
#include "../tables.h"
#include "r_opengl/r_opengl.h"
#ifdef HAVE_SPHEREFRUSTRUM
static GLdouble viewMatrix[16];
static GLdouble projMatrix[16];
float frustum[6][4];
#endif
typedef struct clipnode_s
{
struct clipnode_s *prev, *next;
angle_t start, end;
} clipnode_t;
clipnode_t *freelist;
clipnode_t *clipnodes;
clipnode_t *cliphead;
static clipnode_t * gld_clipnode_GetNew(void);
static clipnode_t * gld_clipnode_NewRange(angle_t start, angle_t end);
static boolean gld_clipper_IsRangeVisible(angle_t startAngle, angle_t endAngle);
static void gld_clipper_AddClipRange(angle_t start, angle_t end);
static void gld_clipper_RemoveRange(clipnode_t * range);
static void gld_clipnode_Free(clipnode_t *node);
static clipnode_t * gld_clipnode_GetNew(void)
{
if (freelist)
{
clipnode_t * p = freelist;
freelist = p->next;
return p;
}
else
{
return (clipnode_t*)malloc(sizeof(clipnode_t));
}
}
static clipnode_t * gld_clipnode_NewRange(angle_t start, angle_t end)
{
clipnode_t * c = gld_clipnode_GetNew();
c->start = start;
c->end = end;
c->next = c->prev=NULL;
return c;
}
boolean gld_clipper_SafeCheckRange(angle_t startAngle, angle_t endAngle)
{
if(startAngle > endAngle)
{
return (gld_clipper_IsRangeVisible(startAngle, ANGLE_MAX) || gld_clipper_IsRangeVisible(0, endAngle));
}
return gld_clipper_IsRangeVisible(startAngle, endAngle);
}
static boolean gld_clipper_IsRangeVisible(angle_t startAngle, angle_t endAngle)
{
clipnode_t *ci;
ci = cliphead;
if (endAngle == 0 && ci && ci->start == 0)
return false;
while (ci != NULL && ci->start < endAngle)
{
if (startAngle >= ci->start && endAngle <= ci->end)
{
return false;
}
ci = ci->next;
}
return true;
}
static void gld_clipnode_Free(clipnode_t *node)
{
node->next = freelist;
freelist = node;
}
static void gld_clipper_RemoveRange(clipnode_t *range)
{
if (range == cliphead)
{
cliphead = cliphead->next;
}
else
{
if (range->prev)
{
range->prev->next = range->next;
}
if (range->next)
{
range->next->prev = range->prev;
}
}
gld_clipnode_Free(range);
}
void gld_clipper_SafeAddClipRange(angle_t startangle, angle_t endangle)
{
if(startangle > endangle)
{
// The range has to added in two parts.
gld_clipper_AddClipRange(startangle, ANGLE_MAX);
gld_clipper_AddClipRange(0, endangle);
}
else
{
// Add the range as usual.
gld_clipper_AddClipRange(startangle, endangle);
}
}
static void gld_clipper_AddClipRange(angle_t start, angle_t end)
{
clipnode_t *node, *temp, *prevNode, *node2, *delnode;
if (cliphead)
{
//check to see if range contains any old ranges
node = cliphead;
while (node != NULL && node->start < end)
{
if (node->start >= start && node->end <= end)
{
temp = node;
node = node->next;
gld_clipper_RemoveRange(temp);
}
else
{
if (node->start <= start && node->end >= end)
{
return;
}
else
{
node = node->next;
}
}
}
//check to see if range overlaps a range (or possibly 2)
node = cliphead;
while (node != NULL && node->start <= end)
{
if (node->end >= start)
{
// we found the first overlapping node
if (node->start > start)
{
// the new range overlaps with this node's start point
node->start = start;
}
if (node->end < end)
{
node->end = end;
}
node2 = node->next;
while (node2 && node2->start <= node->end)
{
if (node2->end > node->end)
{
node->end = node2->end;
}
delnode = node2;
node2 = node2->next;
gld_clipper_RemoveRange(delnode);
}
return;
}
node = node->next;
}
//just add range
node = cliphead;
prevNode = NULL;
temp = gld_clipnode_NewRange(start, end);
while (node != NULL && node->start < end)
{
prevNode = node;
node = node->next;
}
temp->next = node;
if (node == NULL)
{
temp->prev = prevNode;
if (prevNode)
{
prevNode->next = temp;
}
if (!cliphead)
{
cliphead = temp;
}
}
else
{
if (node == cliphead)
{
cliphead->prev = temp;
cliphead = temp;
}
else
{
temp->prev = prevNode;
prevNode->next = temp;
node->prev = temp;
}
}
}
else
{
temp = gld_clipnode_NewRange(start, end);
cliphead = temp;
return;
}
}
void gld_clipper_Clear(void)
{
clipnode_t *node = cliphead;
clipnode_t *temp;
while (node != NULL)
{
temp = node;
node = node->next;
gld_clipnode_Free(temp);
}
cliphead = NULL;
}
#define RMUL (1.6f/1.333333f)
angle_t gld_FrustumAngle(void)
{
double floatangle;
angle_t a1;
float tilt = (float)fabs(((double)(int)aimingangle) / ANG1);
// NEWCLIP TODO: SRB2CBTODO: make a global render_fov for this function
float render_fov = FIXED_TO_FLOAT(cv_grfov.value);
float render_fovratio = (float)BASEVIDWIDTH / (float)BASEVIDHEIGHT; // SRB2CBTODO: NEWCLIPTODO: Is this right?
float render_multiplier = 64.0f / render_fovratio / RMUL;
if (tilt > 90.0f)
{
tilt = 90.0f;
}
// If the pitch is larger than this you can look all around at a FOV of 90
if (abs((signed)aimingangle) > 46 * ANG1)
return 0xffffffff;
// ok, this is a gross hack that barely works...
// but at least it doesn't overestimate too much...
floatangle = 2.0f + (45.0f + (tilt / 1.9f)) * (float)render_fov * 48.0f / render_multiplier / 90.0f;
a1 = ANG1 * (int)floatangle;
if (a1 >= ANGLE_180)
return 0xffffffff;
return a1;
}
// SRB2CB I don't think used any of this stuff, let's disable for now since SRB2 probably doesn't want it either
// compiler complains about (p)glGetDoublev anyway, in case anyone wants this
// only r_opengl.c can use the base gl funcs as it turns out, that's a problem for whoever wants sphere frustum checks
// btw to renable define HAVE_SPHEREFRUSTRUM in hw_clip.h
#ifdef HAVE_SPHEREFRUSTRUM
//
// gld_FrustrumSetup
//
#define CALCMATRIX(a, b, c, d, e, f, g, h)\
(float)(viewMatrix[a] * projMatrix[b] + \
viewMatrix[c] * projMatrix[d] + \
viewMatrix[e] * projMatrix[f] + \
viewMatrix[g] * projMatrix[h])
#define NORMALIZE_PLANE(i)\
t = (float)sqrt(\
frustum[i][0] * frustum[i][0] + \
frustum[i][1] * frustum[i][1] + \
frustum[i][2] * frustum[i][2]); \
frustum[i][0] /= t; \
frustum[i][1] /= t; \
frustum[i][2] /= t; \
frustum[i][3] /= t
void gld_FrustrumSetup(void)
{
float t;
float clip[16];
pglGetDoublev(GL_PROJECTION_MATRIX, projMatrix);
pglGetDoublev(GL_MODELVIEW_MATRIX, viewMatrix);
clip[0] = CALCMATRIX(0, 0, 1, 4, 2, 8, 3, 12);
clip[1] = CALCMATRIX(0, 1, 1, 5, 2, 9, 3, 13);
clip[2] = CALCMATRIX(0, 2, 1, 6, 2, 10, 3, 14);
clip[3] = CALCMATRIX(0, 3, 1, 7, 2, 11, 3, 15);
clip[4] = CALCMATRIX(4, 0, 5, 4, 6, 8, 7, 12);
clip[5] = CALCMATRIX(4, 1, 5, 5, 6, 9, 7, 13);
clip[6] = CALCMATRIX(4, 2, 5, 6, 6, 10, 7, 14);
clip[7] = CALCMATRIX(4, 3, 5, 7, 6, 11, 7, 15);
clip[8] = CALCMATRIX(8, 0, 9, 4, 10, 8, 11, 12);
clip[9] = CALCMATRIX(8, 1, 9, 5, 10, 9, 11, 13);
clip[10] = CALCMATRIX(8, 2, 9, 6, 10, 10, 11, 14);
clip[11] = CALCMATRIX(8, 3, 9, 7, 10, 11, 11, 15);
clip[12] = CALCMATRIX(12, 0, 13, 4, 14, 8, 15, 12);
clip[13] = CALCMATRIX(12, 1, 13, 5, 14, 9, 15, 13);
clip[14] = CALCMATRIX(12, 2, 13, 6, 14, 10, 15, 14);
clip[15] = CALCMATRIX(12, 3, 13, 7, 14, 11, 15, 15);
// Right plane
frustum[0][0] = clip[ 3] - clip[ 0];
frustum[0][1] = clip[ 7] - clip[ 4];
frustum[0][2] = clip[11] - clip[ 8];
frustum[0][3] = clip[15] - clip[12];
NORMALIZE_PLANE(0);
// Left plane
frustum[1][0] = clip[ 3] + clip[ 0];
frustum[1][1] = clip[ 7] + clip[ 4];
frustum[1][2] = clip[11] + clip[ 8];
frustum[1][3] = clip[15] + clip[12];
NORMALIZE_PLANE(1);
// Bottom plane
frustum[2][0] = clip[ 3] + clip[ 1];
frustum[2][1] = clip[ 7] + clip[ 5];
frustum[2][2] = clip[11] + clip[ 9];
frustum[2][3] = clip[15] + clip[13];
NORMALIZE_PLANE(2);
// Top plane
frustum[3][0] = clip[ 3] - clip[ 1];
frustum[3][1] = clip[ 7] - clip[ 5];
frustum[3][2] = clip[11] - clip[ 9];
frustum[3][3] = clip[15] - clip[13];
NORMALIZE_PLANE(3);
// Far plane
frustum[4][0] = clip[ 3] - clip[ 2];
frustum[4][1] = clip[ 7] - clip[ 6];
frustum[4][2] = clip[11] - clip[10];
frustum[4][3] = clip[15] - clip[14];
NORMALIZE_PLANE(4);
// Near plane
frustum[5][0] = clip[ 3] + clip[ 2];
frustum[5][1] = clip[ 7] + clip[ 6];
frustum[5][2] = clip[11] + clip[10];
frustum[5][3] = clip[15] + clip[14];
NORMALIZE_PLANE(5);
}
boolean gld_SphereInFrustum(float x, float y, float z, float radius)
{
int p;
for (p = 0; p < 4; p++)
{
if (frustum[p][0] * x +
frustum[p][1] * y +
frustum[p][2] * z +
frustum[p][3] <= -radius)
{
return false;
}
}
return true;
}
#endif

24
src/hardware/hw_clip.h Normal file
View file

@ -0,0 +1,24 @@
/*
* hw_clip.h
* SRB2CB
*
* PrBoom's OpenGL clipping
*
*
*/
// OpenGL BSP clipping
#include "../doomdef.h"
#include "../tables.h"
#include "../doomtype.h"
//#define HAVE_SPHEREFRUSTRUM // enable if you want gld_SphereInFrustum and related code
boolean gld_clipper_SafeCheckRange(angle_t startAngle, angle_t endAngle);
void gld_clipper_SafeAddClipRange(angle_t startangle, angle_t endangle);
void gld_clipper_Clear(void);
angle_t gld_FrustumAngle(void);
#ifdef HAVE_SPHEREFRUSTRUM
void gld_FrustrumSetup(void);
boolean gld_SphereInFrustum(float x, float y, float z, float radius);
#endif

248
src/hardware/hw_main.c
View file

@ -44,6 +44,10 @@
#endif
#include "hw_md2.h"
#ifdef NEWCLIP
#include "hw_clip.h"
#endif
#define R_FAKEFLOORS
#define HWPRECIP
#define SORTING
@ -99,8 +103,9 @@ CV_PossibleValue_t granisotropicmode_cons_t[] = {{1, "MIN"}, {16, "MAX"}, {0, NU
boolean drawsky = true;
// needs fix: walls are incorrectly clipped one column less
#ifndef NEWCLIP
static consvar_t cv_grclipwalls = {"gr_clipwalls", "Off", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
#endif
//development variables for diverse uses
static consvar_t cv_gralpha = {"gr_alpha", "160", 0, CV_Unsigned, NULL, 0, NULL, NULL, 0, 0, NULL};
static consvar_t cv_grbeta = {"gr_beta", "0", 0, CV_Unsigned, NULL, 0, NULL, NULL, 0, 0, NULL};
@ -1030,6 +1035,7 @@ static void HWR_ProjectWall(wallVert3D * wallVerts,
// (in fact a clipping plane that has a constant, so can clip with simple 2d)
// with the wall segment
//
#ifndef NEWCLIP
static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
{
float num, den;
@ -1058,6 +1064,7 @@ static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
return num / den;
}
#endif
//
// HWR_SplitWall
@ -1333,7 +1340,11 @@ static void HWR_DrawSkyWall(wallVert3D *wallVerts, FSurfaceInfo *Surf, fixed_t b
// Anything between means the wall segment has been clipped with solidsegs,
// reducing wall overdraw to a minimum
//
#ifdef NEWCLIP
static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
#else
static void HWR_StoreWallRange(double startfrac, double endfrac)
#endif
{
wallVert3D wallVerts[4];
v2d_t vs, ve; // start, end vertices of 2d line (view from above)
@ -1358,8 +1369,10 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
extracolormap_t *colormap;
FSurfaceInfo Surf;
#ifndef NEWCLIP
if (startfrac > endfrac)
return;
#endif
gr_sidedef = gr_curline->sidedef;
gr_linedef = gr_curline->linedef;
@ -1408,15 +1421,19 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
// x offset the texture
fixed_t texturehpeg = gr_sidedef->textureoffset + gr_curline->offset;
#ifndef NEWCLIP
// clip texture s start/end coords with solidsegs
if (startfrac > 0.0f && startfrac < 1.0f)
cliplow = (float)(texturehpeg + (gr_curline->flength*FRACUNIT) * startfrac);
else
#endif
cliplow = (float)texturehpeg;
#ifndef NEWCLIP
if (endfrac > 0.0f && endfrac < 1.0f)
cliphigh = (float)(texturehpeg + (gr_curline->flength*FRACUNIT) * endfrac);
else
#endif
cliphigh = (float)(texturehpeg + (gr_curline->flength*FRACUNIT));
}
@ -2325,6 +2342,110 @@ static void HWR_StoreWallRange(double startfrac, double endfrac)
//Hurdler: end of 3d-floors test
}
// From PrBoom:
//
// e6y: Check whether the player can look beyond this line
//
#ifdef NEWCLIP
boolean checkforemptylines = true;
// Don't modify anything here, just check
// Kalaron: Modified for sloped linedefs
static boolean CheckClip(seg_t * seg, sector_t * afrontsector, sector_t * abacksector)
{
fixed_t frontf1,frontf2, frontc1, frontc2; // front floor/ceiling ends
fixed_t backf1, backf2, backc1, backc2; // back floor ceiling ends
// GZDoom method of sloped line clipping
#ifdef ESLOPE
if (afrontsector->f_slope || afrontsector->c_slope || abacksector->f_slope || abacksector->c_slope)
{
fixed_t v1x, v1y, v2x, v2y; // the seg's vertexes as fixed_t
v1x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->x);
v1y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv1)->y);
v2x = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->x);
v2y = FLOAT_TO_FIXED(((polyvertex_t *)gr_curline->pv2)->y);
#define SLOPEPARAMS(slope, end1, end2, normalheight) \
if (slope) { \
end1 = P_GetZAt(slope, v1x, v1y); \
end2 = P_GetZAt(slope, v2x, v2y); \
} else \
end1 = end2 = normalheight;
SLOPEPARAMS(afrontsector->f_slope, frontf1, frontf2, afrontsector->floorheight)
SLOPEPARAMS(afrontsector->c_slope, frontc1, frontc2, afrontsector->ceilingheight)
SLOPEPARAMS( abacksector->f_slope, backf1, backf2, abacksector->floorheight)
SLOPEPARAMS( abacksector->c_slope, backc1, backc2, abacksector->ceilingheight)
#undef SLOPEPARAMS
}
else
#endif
{
frontf1 = frontf2 = afrontsector->floorheight;
frontc1 = frontc2 = afrontsector->ceilingheight;
backf1 = backf2 = abacksector->floorheight;
backc1 = backc2 = abacksector->ceilingheight;
}
// now check for closed sectors!
if (backc1 <= frontf1 && backc2 <= frontf2)
{
checkforemptylines = false;
if (!seg->sidedef->toptexture)
return false;
if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
return false;
return true;
}
if (backf1 >= frontc1 && backf2 >= frontc2)
{
checkforemptylines = false;
if (!seg->sidedef->bottomtexture)
return false;
// properly render skies (consider door "open" if both floors are sky):
if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
return false;
return true;
}
if (backc1 <= backf1 && backc2 <= backf2)
{
checkforemptylines = false;
// preserve a kind of transparent door/lift special effect:
if (backc1 < frontc1 || backc2 < frontc2)
{
if (!seg->sidedef->toptexture)
return false;
}
if (backf1 > frontf1 || backf2 > frontf2)
{
if (!seg->sidedef->bottomtexture)
return false;
}
if (abacksector->ceilingpic == skyflatnum && afrontsector->ceilingpic == skyflatnum)
return false;
if (abacksector->floorpic == skyflatnum && afrontsector->floorpic == skyflatnum)
return false;
return true;
}
if (backc1 != frontc1 || backc2 != frontc2
|| backf1 != frontf1 || backf2 != frontf2)
{
checkforemptylines = false;
return false;
}
return false;
}
#else
//Hurdler: just like in r_bsp.c
#if 1
#define MAXSEGS MAXVIDWIDTH/2+1
@ -2610,6 +2731,7 @@ static void HWR_ClearClipSegs(void)
gr_solidsegs[1].last = 0x7fffffff;
hw_newend = gr_solidsegs+2;
}
#endif // NEWCLIP
// -----------------+
// HWR_AddLine : Clips the given segment and adds any visible pieces to the line list.
@ -2618,17 +2740,20 @@ static void HWR_ClearClipSegs(void)
// -----------------+
static void HWR_AddLine(seg_t * line)
{
INT32 x1, x2;
angle_t angle1, angle2;
#ifndef NEWCLIP
INT32 x1, x2;
angle_t span, tspan;
#endif
// SoM: Backsector needs to be run through R_FakeFlat
static sector_t tempsec;
fixed_t v1x, v1y, v2x, v2y; // the seg's vertexes as fixed_t
#ifdef POLYOBJECTS
if (line->polyseg && !(line->polyseg->flags & POF_RENDERSIDES))
return;
#endif
gr_curline = line;
@ -2641,6 +2766,20 @@ static void HWR_AddLine(seg_t * line)
angle1 = R_PointToAngle(v1x, v1y);
angle2 = R_PointToAngle(v2x, v2y);
#ifdef NEWCLIP
// PrBoom: Back side, i.e. backface culling - read: endAngle >= startAngle!
if (angle2 - angle1 < ANGLE_180)
return;
// PrBoom: use REAL clipping math YAYYYYYYY!!!
if (!gld_clipper_SafeCheckRange(angle2, angle1))
{
return;
}
checkforemptylines = true;
#else
// Clip to view edges.
span = angle1 - angle2;
@ -2719,8 +2858,34 @@ static void HWR_AddLine(seg_t * line)
return;
}
*/
#endif
gr_backsector = line->backsector;
#ifdef NEWCLIP
if (!line->backsector)
{
gld_clipper_SafeAddClipRange(angle2, angle1);
}
else
{
gr_backsector = R_FakeFlat(gr_backsector, &tempsec, NULL, NULL, true);
if (CheckClip(line, gr_frontsector, gr_backsector))
{
gld_clipper_SafeAddClipRange(angle2, angle1);
checkforemptylines = false;
}
// Reject empty lines used for triggers and special events.
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (checkforemptylines && R_IsEmptyLine(line, gr_frontsector, gr_backsector))
return;
}
HWR_ProcessSeg(); // Doesn't need arguments because they're defined globally :D
return;
#else
// Single sided line?
if (!gr_backsector)
goto clipsolid;
@ -2792,38 +2957,8 @@ static void HWR_AddLine(seg_t * line)
// Identical floor and ceiling on both sides,
// identical light levels on both sides,
// and no middle texture.
if (
#ifdef POLYOBJECTS
!line->polyseg &&
#endif
gr_backsector->ceilingpic == gr_frontsector->ceilingpic
&& gr_backsector->floorpic == gr_frontsector->floorpic
#ifdef ESLOPE
&& gr_backsector->f_slope == gr_frontsector->f_slope
&& gr_backsector->c_slope == gr_frontsector->c_slope
#endif
&& gr_backsector->lightlevel == gr_frontsector->lightlevel
&& !gr_curline->sidedef->midtexture
// Check offsets too!
&& gr_backsector->floor_xoffs == gr_frontsector->floor_xoffs
&& gr_backsector->floor_yoffs == gr_frontsector->floor_yoffs
&& gr_backsector->floorpic_angle == gr_frontsector->floorpic_angle
&& gr_backsector->ceiling_xoffs == gr_frontsector->ceiling_xoffs
&& gr_backsector->ceiling_yoffs == gr_frontsector->ceiling_yoffs
&& gr_backsector->ceilingpic_angle == gr_frontsector->ceilingpic_angle
// Consider altered lighting.
&& gr_backsector->floorlightsec == gr_frontsector->floorlightsec
&& gr_backsector->ceilinglightsec == gr_frontsector->ceilinglightsec
// Consider colormaps
&& gr_backsector->extra_colormap == gr_frontsector->extra_colormap
&& ((!gr_frontsector->ffloors && !gr_backsector->ffloors)
|| gr_frontsector->tag == gr_backsector->tag))
// SoM: For 3D sides... Boris, would you like to take a
// crack at rendering 3D sides? You would need to add the
// above check and add code to HWR_StoreWallRange...
{
if (R_IsEmptyLine(gr_curline, gr_frontsector, gr_backsector))
return;
}
clippass:
if (x1 == x2)
@ -2835,6 +2970,7 @@ clipsolid:
if (x1 == x2)
goto clippass;
HWR_ClipSolidWallSegment(x1, x2-1);
#endif
}
// HWR_CheckBBox
@ -2846,9 +2982,13 @@ clipsolid:
static boolean HWR_CheckBBox(fixed_t *bspcoord)
{
INT32 boxpos, sx1, sx2;
INT32 boxpos;
fixed_t px1, py1, px2, py2;
angle_t angle1, angle2, span, tspan;
angle_t angle1, angle2;
#ifndef NEWCLIP
INT32 sx1, sx2;
angle_t span, tspan;
#endif
// Find the corners of the box
// that define the edges from current viewpoint.
@ -2874,6 +3014,11 @@ static boolean HWR_CheckBBox(fixed_t *bspcoord)
px2 = bspcoord[checkcoord[boxpos][2]];
py2 = bspcoord[checkcoord[boxpos][3]];
#ifdef NEWCLIP
angle1 = R_PointToAngle(px1, py1);
angle2 = R_PointToAngle(px2, py2);
return gld_clipper_SafeCheckRange(angle2, angle1);
#else
// check clip list for an open space
angle1 = R_PointToAngle2(dup_viewx>>1, dup_viewy>>1, px1>>1, py1>>1) - dup_viewangle;
angle2 = R_PointToAngle2(dup_viewx>>1, dup_viewy>>1, px2>>1, py2>>1) - dup_viewangle;
@ -2921,6 +3066,7 @@ static boolean HWR_CheckBBox(fixed_t *bspcoord)
return false;
return HWR_ClipToSolidSegs(sx1, sx2 - 1);
#endif
}
#ifdef POLYOBJECTS
@ -5694,7 +5840,19 @@ if (0)
#ifdef SORTING
drawcount = 0;
#endif
#ifdef NEWCLIP
if (rendermode == render_opengl)
{
angle_t a1 = gld_FrustumAngle();
gld_clipper_Clear();
gld_clipper_SafeAddClipRange(viewangle + a1, viewangle - a1);
#ifdef HAVE_SPHEREFRUSTRUM
gld_FrustrumSetup();
#endif
}
#else
HWR_ClearClipSegs();
#endif
//04/01/2000: Hurdler: added for T&L
// Actually it only works on Walls and Planes
@ -5704,6 +5862,7 @@ if (0)
HWR_RenderBSPNode((INT32)numnodes-1);
#ifndef NEWCLIP
// Make a viewangle int so we can render things based on mouselook
if (player == &players[consoleplayer])
viewangle = localaiming;
@ -5730,6 +5889,7 @@ if (0)
dup_viewangle += ANGLE_90;
}
#endif
// Check for new console commands.
NetUpdate();
@ -5901,7 +6061,19 @@ if (0)
#ifdef SORTING
drawcount = 0;
#endif
#ifdef NEWCLIP
if (rendermode == render_opengl)
{
angle_t a1 = gld_FrustumAngle();
gld_clipper_Clear();
gld_clipper_SafeAddClipRange(viewangle + a1, viewangle - a1);
#ifdef HAVE_SPHEREFRUSTRUM
gld_FrustrumSetup();
#endif
}
#else
HWR_ClearClipSegs();
#endif
//04/01/2000: Hurdler: added for T&L
// Actually it only works on Walls and Planes
@ -5911,6 +6083,7 @@ if (0)
HWR_RenderBSPNode((INT32)numnodes-1);
#ifndef NEWCLIP
// Make a viewangle int so we can render things based on mouselook
if (player == &players[consoleplayer])
viewangle = localaiming;
@ -5937,6 +6110,7 @@ if (0)
dup_viewangle += ANGLE_90;
}
#endif
// Check for new console commands.
NetUpdate();
@ -6079,7 +6253,9 @@ static inline void HWR_AddEngineCommands(void)
{
// engine state variables
//CV_RegisterVar(&cv_grzbuffer);
#ifndef NEWCLIP
CV_RegisterVar(&cv_grclipwalls);
#endif
// engine development mode variables
// - usage may vary from version to version..

60
src/r_bsp.c
View file

@ -365,6 +365,36 @@ sector_t *R_FakeFlat(sector_t *sec, sector_t *tempsec, INT32 *floorlightlevel,
return sec;
}
boolean R_IsEmptyLine(seg_t *line, sector_t *front, sector_t *back)
{
return (
#ifdef POLYOBJECTS
!line->polyseg &&
#endif
back->ceilingpic == front->ceilingpic
&& back->floorpic == front->floorpic
#ifdef ESLOPE
&& back->f_slope == front->f_slope
&& back->c_slope == front->c_slope
#endif
&& back->lightlevel == front->lightlevel
&& !line->sidedef->midtexture
// Check offsets too!
&& back->floor_xoffs == front->floor_xoffs
&& back->floor_yoffs == front->floor_yoffs
&& back->floorpic_angle == front->floorpic_angle
&& back->ceiling_xoffs == front->ceiling_xoffs
&& back->ceiling_yoffs == front->ceiling_yoffs
&& back->ceilingpic_angle == front->ceilingpic_angle
// Consider altered lighting.
&& back->floorlightsec == front->floorlightsec
&& back->ceilinglightsec == front->ceilinglightsec
// Consider colormaps
&& back->extra_colormap == front->extra_colormap
&& ((!front->ffloors && !back->ffloors)
|| front->tag == back->tag));
}
//
// R_AddLine
// Clips the given segment and adds any visible pieces to the line list.
@ -526,36 +556,8 @@ static void R_AddLine(seg_t *line)
// Identical floor and ceiling on both sides, identical light levels on both sides,
// and no middle texture.
if (
#ifdef POLYOBJECTS
!line->polyseg &&
#endif
backsector->ceilingpic == frontsector->ceilingpic
&& backsector->floorpic == frontsector->floorpic
#ifdef ESLOPE
&& backsector->f_slope == frontsector->f_slope
&& backsector->c_slope == frontsector->c_slope
#endif
&& backsector->lightlevel == frontsector->lightlevel
&& !curline->sidedef->midtexture
// Check offsets too!
&& backsector->floor_xoffs == frontsector->floor_xoffs
&& backsector->floor_yoffs == frontsector->floor_yoffs
&& backsector->floorpic_angle == frontsector->floorpic_angle
&& backsector->ceiling_xoffs == frontsector->ceiling_xoffs
&& backsector->ceiling_yoffs == frontsector->ceiling_yoffs
&& backsector->ceilingpic_angle == frontsector->ceilingpic_angle
// Consider altered lighting.
&& backsector->floorlightsec == frontsector->floorlightsec
&& backsector->ceilinglightsec == frontsector->ceilinglightsec
// Consider colormaps
&& backsector->extra_colormap == frontsector->extra_colormap
&& ((!frontsector->ffloors && !backsector->ffloors)
|| frontsector->tag == backsector->tag))
{
if (R_IsEmptyLine(line, frontsector, backsector))
return;
}
clippass:
R_ClipPassWallSegment(x1, x2 - 1);

1
src/r_bsp.h
View file

@ -50,6 +50,7 @@ extern polyobj_t **po_ptrs; // temp ptr array to sort polyobject pointers
sector_t *R_FakeFlat(sector_t *sec, sector_t *tempsec, INT32 *floorlightlevel,
INT32 *ceilinglightlevel, boolean back);
boolean R_IsEmptyLine(seg_t *line, sector_t *front, sector_t *back);
INT32 R_GetPlaneLight(sector_t *sector, fixed_t planeheight, boolean underside);
void R_Prep3DFloors(sector_t *sector);