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Move flat and slope plane drawing to their own files, isolate and privatize their working variables

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This commit is contained in:
Magnus Norddahl 2016-12-31 11:42:49 +01:00
parent 447b162534
commit f354cc8c67
9 changed files with 590 additions and 495 deletions
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2
src/CMakeLists.txt
View file

@ -832,6 +832,8 @@ set( FASTMATH_PCH_SOURCES
swrenderer/scene/r_wallsprite.cpp
swrenderer/scene/r_decal.cpp
swrenderer/scene/r_skyplane.cpp
swrenderer/scene/r_flatplane.cpp
swrenderer/scene/r_slopeplane.cpp
polyrenderer/poly_renderer.cpp
polyrenderer/scene/poly_scene.cpp
polyrenderer/scene/poly_portal.cpp

41
src/swrenderer/r_main.cpp
View file

@ -38,6 +38,7 @@
#include "scene/r_things.h"
#include "drawers/r_draw.h"
#include "scene/r_plane.h"
#include "scene/r_flatplane.h"
#include "scene/r_bsp.h"
#include "scene/r_draw_segment.h"
#include "scene/r_portal_segment.h"
@ -491,45 +492,7 @@ void R_SetupFreelook()
globaluclip = -CenterY / InvZtoScale;
globaldclip = (viewheight - CenterY) / InvZtoScale;
//centeryfrac &= 0xffff0000;
int e, i;
i = 0;
e = viewheight;
float focus = float(FocalLengthY);
float den;
float cy = float(CenterY);
if (i < centery)
{
den = cy - i - 0.5f;
if (e <= centery)
{
do {
yslope[i] = focus / den;
den -= 1;
} while (++i < e);
}
else
{
do {
yslope[i] = focus / den;
den -= 1;
} while (++i < centery);
den = i - cy + 0.5f;
do {
yslope[i] = focus / den;
den += 1;
} while (++i < e);
}
}
else
{
den = i - cy + 0.5f;
do {
yslope[i] = focus / den;
den += 1;
} while (++i < e);
}
R_SetupPlaneSlope();
}
//==========================================================================

359
src/swrenderer/scene/r_flatplane.cpp Normal file
View file

@ -0,0 +1,359 @@
#include <stdlib.h>
#include <float.h>
#include "templates.h"
#include "i_system.h"
#include "w_wad.h"
#include "doomdef.h"
#include "doomstat.h"
#include "swrenderer/r_main.h"
#include "swrenderer/scene/r_things.h"
#include "r_sky.h"
#include "stats.h"
#include "v_video.h"
#include "a_sharedglobal.h"
#include "c_console.h"
#include "cmdlib.h"
#include "d_net.h"
#include "g_level.h"
#include "r_bsp.h"
#include "r_flatplane.h"
#include "r_segs.h"
#include "r_3dfloors.h"
#include "v_palette.h"
#include "r_data/colormaps.h"
#include "swrenderer/drawers/r_draw_rgba.h"
#include "gl/dynlights/gl_dynlight.h"
#include "r_walldraw.h"
#include "r_clip_segment.h"
#include "r_draw_segment.h"
#include "r_portal.h"
#include "r_plane.h"
#include "swrenderer/r_memory.h"
namespace swrenderer
{
namespace
{
double planeheight;
bool plane_shade;
int planeshade;
fixed_t pviewx, pviewy;
float yslope[MAXHEIGHT];
fixed_t xscale, yscale;
double xstepscale, ystepscale;
double basexfrac, baseyfrac;
}
void R_DrawNormalPlane(visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked)
{
using namespace drawerargs;
if (alpha <= 0)
{
return;
}
double planeang = (pl->xform.Angle + pl->xform.baseAngle).Radians();
double xstep, ystep, leftxfrac, leftyfrac, rightxfrac, rightyfrac;
double x;
xscale = xs_ToFixed(32 - ds_xbits, _xscale);
yscale = xs_ToFixed(32 - ds_ybits, _yscale);
if (planeang != 0)
{
double cosine = cos(planeang), sine = sin(planeang);
pviewx = FLOAT2FIXED(pl->xform.xOffs + ViewPos.X * cosine - ViewPos.Y * sine);
pviewy = FLOAT2FIXED(pl->xform.yOffs - ViewPos.X * sine - ViewPos.Y * cosine);
}
else
{
pviewx = FLOAT2FIXED(pl->xform.xOffs + ViewPos.X);
pviewy = FLOAT2FIXED(pl->xform.yOffs - ViewPos.Y);
}
pviewx = FixedMul(xscale, pviewx);
pviewy = FixedMul(yscale, pviewy);
// left to right mapping
planeang += (ViewAngle - 90).Radians();
// Scale will be unit scale at FocalLengthX (normally SCREENWIDTH/2) distance
xstep = cos(planeang) / FocalLengthX;
ystep = -sin(planeang) / FocalLengthX;
// [RH] flip for mirrors
if (MirrorFlags & RF_XFLIP)
{
xstep = -xstep;
ystep = -ystep;
}
planeang += M_PI / 2;
double cosine = cos(planeang), sine = -sin(planeang);
x = pl->right - centerx - 0.5;
rightxfrac = _xscale * (cosine + x * xstep);
rightyfrac = _yscale * (sine + x * ystep);
x = pl->left - centerx - 0.5;
leftxfrac = _xscale * (cosine + x * xstep);
leftyfrac = _yscale * (sine + x * ystep);
basexfrac = rightxfrac;
baseyfrac = rightyfrac;
xstepscale = (rightxfrac - leftxfrac) / (pl->right - pl->left);
ystepscale = (rightyfrac - leftyfrac) / (pl->right - pl->left);
planeheight = fabs(pl->height.Zat0() - ViewPos.Z);
GlobVis = r_FloorVisibility / planeheight;
ds_light = 0;
if (fixedlightlev >= 0)
{
R_SetDSColorMapLight(basecolormap, 0, FIXEDLIGHT2SHADE(fixedlightlev));
plane_shade = false;
}
else if (fixedcolormap)
{
R_SetDSColorMapLight(fixedcolormap, 0, 0);
plane_shade = false;
}
else
{
plane_shade = true;
planeshade = LIGHT2SHADE(pl->lightlevel);
}
if (spanfunc != &SWPixelFormatDrawers::FillSpan)
{
if (masked)
{
if (alpha < OPAQUE || additive)
{
if (!additive)
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMaskedTranslucent;
dc_srcblend = Col2RGB8[alpha >> 10];
dc_destblend = Col2RGB8[(OPAQUE - alpha) >> 10];
dc_srcalpha = alpha;
dc_destalpha = OPAQUE - alpha;
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMaskedAddClamp;
dc_srcblend = Col2RGB8_LessPrecision[alpha >> 10];
dc_destblend = Col2RGB8_LessPrecision[FRACUNIT >> 10];
dc_srcalpha = alpha;
dc_destalpha = FRACUNIT;
}
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMasked;
}
}
else
{
if (alpha < OPAQUE || additive)
{
if (!additive)
{
spanfunc = &SWPixelFormatDrawers::DrawSpanTranslucent;
dc_srcblend = Col2RGB8[alpha >> 10];
dc_destblend = Col2RGB8[(OPAQUE - alpha) >> 10];
dc_srcalpha = alpha;
dc_destalpha = OPAQUE - alpha;
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanAddClamp;
dc_srcblend = Col2RGB8_LessPrecision[alpha >> 10];
dc_destblend = Col2RGB8_LessPrecision[FRACUNIT >> 10];
dc_srcalpha = alpha;
dc_destalpha = FRACUNIT;
}
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpan;
}
}
}
R_MapVisPlane(pl, R_MapPlane, R_StepPlane);
}
void R_StepPlane()
{
basexfrac -= xstepscale;
baseyfrac -= ystepscale;
}
void R_MapPlane(int y, int x1, int x2)
{
using namespace drawerargs;
double distance;
#ifdef RANGECHECK
if (x2 < x1 || x1<0 || x2 >= viewwidth || (unsigned)y >= (unsigned)viewheight)
{
I_FatalError("R_MapPlane: %i, %i at %i", x1, x2, y);
}
#endif
// [RH] Notice that I dumped the caching scheme used by Doom.
// It did not offer any appreciable speedup.
distance = planeheight * yslope[y];
if (ds_xbits != 0)
{
ds_xstep = xs_ToFixed(32 - ds_xbits, distance * xstepscale);
ds_xfrac = xs_ToFixed(32 - ds_xbits, distance * basexfrac) + pviewx;
}
else
{
ds_xstep = 0;
ds_xfrac = 0;
}
if (ds_ybits != 0)
{
ds_ystep = xs_ToFixed(32 - ds_ybits, distance * ystepscale);
ds_yfrac = xs_ToFixed(32 - ds_ybits, distance * baseyfrac) + pviewy;
}
else
{
ds_ystep = 0;
ds_yfrac = 0;
}
if (r_swtruecolor)
{
double distance2 = planeheight * yslope[(y + 1 < viewheight) ? y + 1 : y - 1];
double xmagnitude = fabs(ystepscale * (distance2 - distance) * FocalLengthX);
double ymagnitude = fabs(xstepscale * (distance2 - distance) * FocalLengthX);
double magnitude = MAX(ymagnitude, xmagnitude);
double min_lod = -1000.0;
ds_lod = MAX(log2(magnitude) + r_lod_bias, min_lod);
}
if (plane_shade)
{
// Determine lighting based on the span's distance from the viewer.
R_SetDSColorMapLight(basecolormap, (float)(GlobVis * fabs(CenterY - y)), planeshade);
}
if (r_dynlights)
{
// Find row position in view space
float zspan = (float)(planeheight / (fabs(y + 0.5 - CenterY) / InvZtoScale));
dc_viewpos.X = (float)((x1 + 0.5 - CenterX) / CenterX * zspan);
dc_viewpos.Y = zspan;
dc_viewpos.Z = (float)((CenterY - y - 0.5) / InvZtoScale * zspan);
dc_viewpos_step.X = (float)(zspan / CenterX);
static TriLight lightbuffer[64 * 1024];
static int nextlightindex = 0;
// Setup lights for column
dc_num_lights = 0;
dc_lights = lightbuffer + nextlightindex;
visplane_light *cur_node = ds_light_list;
while (cur_node && nextlightindex < 64 * 1024)
{
double lightX = cur_node->lightsource->X() - ViewPos.X;
double lightY = cur_node->lightsource->Y() - ViewPos.Y;
double lightZ = cur_node->lightsource->Z() - ViewPos.Z;
float lx = (float)(lightX * ViewSin - lightY * ViewCos);
float ly = (float)(lightX * ViewTanCos + lightY * ViewTanSin) - dc_viewpos.Y;
float lz = (float)lightZ - dc_viewpos.Z;
// Precalculate the constant part of the dot here so the drawer doesn't have to.
float lconstant = ly * ly + lz * lz;
// Include light only if it touches this row
float radius = cur_node->lightsource->GetRadius();
if (radius * radius >= lconstant)
{
uint32_t red = cur_node->lightsource->GetRed();
uint32_t green = cur_node->lightsource->GetGreen();
uint32_t blue = cur_node->lightsource->GetBlue();
nextlightindex++;
auto &light = dc_lights[dc_num_lights++];
light.x = lx;
light.y = lconstant;
light.radius = 256.0f / radius;
light.color = (red << 16) | (green << 8) | blue;
}
cur_node = cur_node->next;
}
if (nextlightindex == 64 * 1024)
nextlightindex = 0;
}
else
{
dc_num_lights = 0;
}
ds_y = y;
ds_x1 = x1;
ds_x2 = x2;
(R_Drawers()->*spanfunc)();
}
void R_DrawColoredPlane(visplane_t *pl)
{
R_MapVisPlane(pl, R_MapColoredPlane, nullptr);
}
void R_MapColoredPlane(int y, int x1, int x2)
{
R_Drawers()->DrawColoredSpan(y, x1, x2);
}
void R_SetupPlaneSlope()
{
int e, i;
i = 0;
e = viewheight;
float focus = float(FocalLengthY);
float den;
float cy = float(CenterY);
if (i < centery)
{
den = cy - i - 0.5f;
if (e <= centery)
{
do {
yslope[i] = focus / den;
den -= 1;
} while (++i < e);
}
else
{
do {
yslope[i] = focus / den;
den -= 1;
} while (++i < centery);
den = i - cy + 0.5f;
do {
yslope[i] = focus / den;
den += 1;
} while (++i < e);
}
}
else
{
den = i - cy + 0.5f;
do {
yslope[i] = focus / den;
den += 1;
} while (++i < e);
}
}
}

16
src/swrenderer/scene/r_flatplane.h Normal file
View file

@ -0,0 +1,16 @@
#pragma once
#include "r_visible_plane.h"
namespace swrenderer
{
void R_SetupPlaneSlope();
void R_DrawNormalPlane(visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked);
void R_MapPlane(int y, int x1, int x2);
void R_StepPlane();
void R_DrawColoredPlane(visplane_t *pl);
void R_MapColoredPlane(int y, int x1, int x2);
}

461
src/swrenderer/scene/r_plane.cpp
View file

@ -66,6 +66,8 @@
#include "r_draw_segment.h"
#include "r_portal.h"
#include "r_skyplane.h"
#include "r_flatplane.h"
#include "r_slopeplane.h"
#include "swrenderer/r_memory.h"
#ifdef _MSC_VER
@ -109,176 +111,10 @@ short ceilingclip[MAXWIDTH];
// texture mapping
//
static double planeheight;
extern "C" {
//
// spanend holds the end of a plane span in each screen row
//
short spanend[MAXHEIGHT];
int planeshade;
FVector3 plane_sz, plane_su, plane_sv;
float planelightfloat;
bool plane_shade;
fixed_t pviewx, pviewy;
}
float yslope[MAXHEIGHT];
static fixed_t xscale, yscale;
static double xstepscale, ystepscale;
static double basexfrac, baseyfrac;
void R_DrawSinglePlane (visplane_t *, fixed_t alpha, bool additive, bool masked);
//==========================================================================
//
// R_MapPlane
//
// Globals used: planeheight, ds_source, basexscale, baseyscale,
// pviewx, pviewy, xoffs, yoffs, basecolormap, xscale, yscale.
//
//==========================================================================
void R_MapPlane (int y, int x1)
{
int x2 = spanend[y];
double distance;
#ifdef RANGECHECK
if (x2 < x1 || x1<0 || x2>=viewwidth || (unsigned)y>=(unsigned)viewheight)
{
I_FatalError ("R_MapPlane: %i, %i at %i", x1, x2, y);
}
#endif
// [RH] Notice that I dumped the caching scheme used by Doom.
// It did not offer any appreciable speedup.
distance = planeheight * yslope[y];
if (ds_xbits != 0)
{
ds_xstep = xs_ToFixed(32 - ds_xbits, distance * xstepscale);
ds_xfrac = xs_ToFixed(32 - ds_xbits, distance * basexfrac) + pviewx;
}
else
{
ds_xstep = 0;
ds_xfrac = 0;
}
if (ds_ybits != 0)
{
ds_ystep = xs_ToFixed(32 - ds_ybits, distance * ystepscale);
ds_yfrac = xs_ToFixed(32 - ds_ybits, distance * baseyfrac) + pviewy;
}
else
{
ds_ystep = 0;
ds_yfrac = 0;
}
if (r_swtruecolor)
{
double distance2 = planeheight * yslope[(y + 1 < viewheight) ? y + 1 : y - 1];
double xmagnitude = fabs(ystepscale * (distance2 - distance) * FocalLengthX);
double ymagnitude = fabs(xstepscale * (distance2 - distance) * FocalLengthX);
double magnitude = MAX(ymagnitude, xmagnitude);
double min_lod = -1000.0;
ds_lod = MAX(log2(magnitude) + r_lod_bias, min_lod);
}
if (plane_shade)
{
// Determine lighting based on the span's distance from the viewer.
R_SetDSColorMapLight(basecolormap, GlobVis * fabs(CenterY - y), planeshade);
}
if (r_dynlights)
{
// Find row position in view space
float zspan = planeheight / (fabs(y + 0.5 - CenterY) / InvZtoScale);
dc_viewpos.X = (float)((x1 + 0.5 - CenterX) / CenterX * zspan);
dc_viewpos.Y = zspan;
dc_viewpos.Z = (float)((CenterY - y - 0.5) / InvZtoScale * zspan);
dc_viewpos_step.X = (float)(zspan / CenterX);
static TriLight lightbuffer[64 * 1024];
static int nextlightindex = 0;
// Setup lights for column
dc_num_lights = 0;
dc_lights = lightbuffer + nextlightindex;
visplane_light *cur_node = ds_light_list;
while (cur_node && nextlightindex < 64 * 1024)
{
double lightX = cur_node->lightsource->X() - ViewPos.X;
double lightY = cur_node->lightsource->Y() - ViewPos.Y;
double lightZ = cur_node->lightsource->Z() - ViewPos.Z;
float lx = (float)(lightX * ViewSin - lightY * ViewCos);
float ly = (float)(lightX * ViewTanCos + lightY * ViewTanSin) - dc_viewpos.Y;
float lz = (float)lightZ - dc_viewpos.Z;
// Precalculate the constant part of the dot here so the drawer doesn't have to.
float lconstant = ly * ly + lz * lz;
// Include light only if it touches this row
float radius = cur_node->lightsource->GetRadius();
if (radius * radius >= lconstant)
{
uint32_t red = cur_node->lightsource->GetRed();
uint32_t green = cur_node->lightsource->GetGreen();
uint32_t blue = cur_node->lightsource->GetBlue();
nextlightindex++;
auto &light = dc_lights[dc_num_lights++];
light.x = lx;
light.y = lconstant;
light.radius = 256.0f / radius;
light.color = (red << 16) | (green << 8) | blue;
}
cur_node = cur_node->next;
}
if (nextlightindex == 64 * 1024)
nextlightindex = 0;
}
else
{
dc_num_lights = 0;
}
ds_y = y;
ds_x1 = x1;
ds_x2 = x2;
(R_Drawers()->*spanfunc)();
}
//==========================================================================
//
// R_MapTiltedPlane
//
//==========================================================================
void R_MapTiltedPlane (int y, int x1)
{
R_Drawers()->DrawTiltedSpan(y, x1, spanend[y], plane_sz, plane_su, plane_sv, plane_shade, planeshade, planelightfloat, pviewx, pviewy);
}
//==========================================================================
//
// R_MapColoredPlane
//
//==========================================================================
void R_MapColoredPlane(int y, int x1)
{
R_Drawers()->DrawColoredSpan(y, x1, spanend[y]);
}
void R_DrawFogBoundarySection(int y, int y2, int x1)
{
for (; y < y2; ++y)
@ -790,7 +626,7 @@ void R_DrawSinglePlane (visplane_t *pl, fixed_t alpha, bool additive, bool maske
if (r_drawflat)
{ // [RH] no texture mapping
ds_color += 4;
R_MapVisPlane (pl, R_MapColoredPlane);
R_DrawColoredPlane(pl);
}
else if (pl->picnum == skyflatnum)
{ // sky flat
@ -818,7 +654,6 @@ void R_DrawSinglePlane (visplane_t *pl, fixed_t alpha, bool additive, bool maske
double yscale = pl->xform.yScale * tex->Scale.Y;
basecolormap = pl->colormap;
planeshade = LIGHT2SHADE(pl->lightlevel);
if (r_drawflat || (!pl->height.isSlope() && !tilt))
{
@ -832,277 +667,6 @@ void R_DrawSinglePlane (visplane_t *pl, fixed_t alpha, bool additive, bool maske
NetUpdate ();
}
//==========================================================================
//
// R_DrawNormalPlane
//
//==========================================================================
void R_DrawNormalPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked)
{
if (alpha <= 0)
{
return;
}
double planeang = (pl->xform.Angle + pl->xform.baseAngle).Radians();
double xstep, ystep, leftxfrac, leftyfrac, rightxfrac, rightyfrac;
double x;
xscale = xs_ToFixed(32 - ds_xbits, _xscale);
yscale = xs_ToFixed(32 - ds_ybits, _yscale);
if (planeang != 0)
{
double cosine = cos(planeang), sine = sin(planeang);
pviewx = FLOAT2FIXED(pl->xform.xOffs + ViewPos.X * cosine - ViewPos.Y * sine);
pviewy = FLOAT2FIXED(pl->xform.yOffs - ViewPos.X * sine - ViewPos.Y * cosine);
}
else
{
pviewx = FLOAT2FIXED(pl->xform.xOffs + ViewPos.X);
pviewy = FLOAT2FIXED(pl->xform.yOffs - ViewPos.Y);
}
pviewx = FixedMul (xscale, pviewx);
pviewy = FixedMul (yscale, pviewy);
// left to right mapping
planeang += (ViewAngle - 90).Radians();
// Scale will be unit scale at FocalLengthX (normally SCREENWIDTH/2) distance
xstep = cos(planeang) / FocalLengthX;
ystep = -sin(planeang) / FocalLengthX;
// [RH] flip for mirrors
if (MirrorFlags & RF_XFLIP)
{
xstep = -xstep;
ystep = -ystep;
}
planeang += M_PI/2;
double cosine = cos(planeang), sine = -sin(planeang);
x = pl->right - centerx - 0.5;
rightxfrac = _xscale * (cosine + x * xstep);
rightyfrac = _yscale * (sine + x * ystep);
x = pl->left - centerx - 0.5;
leftxfrac = _xscale * (cosine + x * xstep);
leftyfrac = _yscale * (sine + x * ystep);
basexfrac = rightxfrac;
baseyfrac = rightyfrac;
xstepscale = (rightxfrac - leftxfrac) / (pl->right - pl->left);
ystepscale = (rightyfrac - leftyfrac) / (pl->right - pl->left);
planeheight = fabs(pl->height.Zat0() - ViewPos.Z);
GlobVis = r_FloorVisibility / planeheight;
ds_light = 0;
if (fixedlightlev >= 0)
{
R_SetDSColorMapLight(basecolormap, 0, FIXEDLIGHT2SHADE(fixedlightlev));
plane_shade = false;
}
else if (fixedcolormap)
{
R_SetDSColorMapLight(fixedcolormap, 0, 0);
plane_shade = false;
}
else
{
plane_shade = true;
}
if (spanfunc != &SWPixelFormatDrawers::FillSpan)
{
if (masked)
{
if (alpha < OPAQUE || additive)
{
if (!additive)
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMaskedTranslucent;
dc_srcblend = Col2RGB8[alpha>>10];
dc_destblend = Col2RGB8[(OPAQUE-alpha)>>10];
dc_srcalpha = alpha;
dc_destalpha = OPAQUE - alpha;
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMaskedAddClamp;
dc_srcblend = Col2RGB8_LessPrecision[alpha>>10];
dc_destblend = Col2RGB8_LessPrecision[FRACUNIT>>10];
dc_srcalpha = alpha;
dc_destalpha = FRACUNIT;
}
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanMasked;
}
}
else
{
if (alpha < OPAQUE || additive)
{
if (!additive)
{
spanfunc = &SWPixelFormatDrawers::DrawSpanTranslucent;
dc_srcblend = Col2RGB8[alpha>>10];
dc_destblend = Col2RGB8[(OPAQUE-alpha)>>10];
dc_srcalpha = alpha;
dc_destalpha = OPAQUE - alpha;
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpanAddClamp;
dc_srcblend = Col2RGB8_LessPrecision[alpha>>10];
dc_destblend = Col2RGB8_LessPrecision[FRACUNIT>>10];
dc_srcalpha = alpha;
dc_destalpha = FRACUNIT;
}
}
else
{
spanfunc = &SWPixelFormatDrawers::DrawSpan;
}
}
}
R_MapVisPlane (pl, R_MapPlane);
}
//==========================================================================
//
// R_DrawTiltedPlane
//
//==========================================================================
void R_DrawTiltedPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked)
{
static const float ifloatpow2[16] =
{
// ifloatpow2[i] = 1 / (1 << i)
64.f, 32.f, 16.f, 8.f, 4.f, 2.f, 1.f, 0.5f,
0.25f, 0.125f, 0.0625f, 0.03125f, 0.015625f, 0.0078125f,
0.00390625f, 0.001953125f
/*, 0.0009765625f, 0.00048828125f, 0.000244140625f,
1.220703125e-4f, 6.103515625e-5, 3.0517578125e-5*/
};
double lxscale, lyscale;
double xscale, yscale;
FVector3 p, m, n;
double ang, planeang, cosine, sine;
double zeroheight;
if (alpha <= 0)
{
return;
}
lxscale = _xscale * ifloatpow2[ds_xbits];
lyscale = _yscale * ifloatpow2[ds_ybits];
xscale = 64.f / lxscale;
yscale = 64.f / lyscale;
zeroheight = pl->height.ZatPoint(ViewPos);
pviewx = xs_ToFixed(32 - ds_xbits, pl->xform.xOffs * pl->xform.xScale);
pviewy = xs_ToFixed(32 - ds_ybits, pl->xform.yOffs * pl->xform.yScale);
planeang = (pl->xform.Angle + pl->xform.baseAngle).Radians();
// p is the texture origin in view space
// Don't add in the offsets at this stage, because doing so can result in
// errors if the flat is rotated.
ang = M_PI*3/2 - ViewAngle.Radians();
cosine = cos(ang), sine = sin(ang);
p[0] = ViewPos.X * cosine - ViewPos.Y * sine;
p[2] = ViewPos.X * sine + ViewPos.Y * cosine;
p[1] = pl->height.ZatPoint(0.0, 0.0) - ViewPos.Z;
// m is the v direction vector in view space
ang = ang - M_PI / 2 - planeang;
cosine = cos(ang), sine = sin(ang);
m[0] = yscale * cosine;
m[2] = yscale * sine;
// m[1] = pl->height.ZatPointF (0, iyscale) - pl->height.ZatPointF (0,0));
// VectorScale2 (m, 64.f/VectorLength(m));
// n is the u direction vector in view space
#if 0
//let's use the sin/cosine we already know instead of computing new ones
ang += M_PI/2
n[0] = -xscale * cos(ang);
n[2] = -xscale * sin(ang);
#else
n[0] = xscale * sine;
n[2] = -xscale * cosine;
#endif
// n[1] = pl->height.ZatPointF (ixscale, 0) - pl->height.ZatPointF (0,0));
// VectorScale2 (n, 64.f/VectorLength(n));
// This code keeps the texture coordinates constant across the x,y plane no matter
// how much you slope the surface. Use the commented-out code above instead to keep
// the textures a constant size across the surface's plane instead.
cosine = cos(planeang), sine = sin(planeang);
m[1] = pl->height.ZatPoint(ViewPos.X + yscale * sine, ViewPos.Y + yscale * cosine) - zeroheight;
n[1] = -(pl->height.ZatPoint(ViewPos.X - xscale * cosine, ViewPos.Y + xscale * sine) - zeroheight);
plane_su = p ^ m;
plane_sv = p ^ n;
plane_sz = m ^ n;
plane_su.Z *= FocalLengthX;
plane_sv.Z *= FocalLengthX;
plane_sz.Z *= FocalLengthX;
plane_su.Y *= IYaspectMul;
plane_sv.Y *= IYaspectMul;
plane_sz.Y *= IYaspectMul;
// Premultiply the texture vectors with the scale factors
plane_su *= 4294967296.f;
plane_sv *= 4294967296.f;
if (MirrorFlags & RF_XFLIP)
{
plane_su[0] = -plane_su[0];
plane_sv[0] = -plane_sv[0];
plane_sz[0] = -plane_sz[0];
}
planelightfloat = (r_TiltVisibility * lxscale * lyscale) / (fabs(pl->height.ZatPoint(ViewPos) - ViewPos.Z)) / 65536.f;
if (pl->height.fC() > 0)
planelightfloat = -planelightfloat;
if (fixedlightlev >= 0)
{
R_SetDSColorMapLight(basecolormap, 0, FIXEDLIGHT2SHADE(fixedlightlev));
plane_shade = false;
}
else if (fixedcolormap)
{
R_SetDSColorMapLight(fixedcolormap, 0, 0);
plane_shade = false;
}
else
{
R_SetDSColorMapLight(basecolormap, 0, 0);
plane_shade = true;
}
// Hack in support for 1 x Z and Z x 1 texture sizes
if (ds_ybits == 0)
{
plane_sv[2] = plane_sv[1] = plane_sv[0] = 0;
}
if (ds_xbits == 0)
{
plane_su[2] = plane_su[1] = plane_su[0] = 0;
}
R_MapVisPlane (pl, R_MapTiltedPlane);
}
//==========================================================================
//
// R_MapVisPlane
@ -1113,7 +677,7 @@ void R_DrawTiltedPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t
//
//==========================================================================
void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1))
void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1, int x2), void(*stepfunc)())
{
int x = pl->right - 1;
int t2 = pl->top[x];
@ -1137,12 +701,16 @@ void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1))
stop = MIN (t1, b2);
while (t2 < stop)
{
mapfunc (t2++, xr);
int y = t2++;
int x2 = spanend[y];
mapfunc (y, xr, x2);
}
stop = MAX (b1, t2);
while (b2 > stop)
{
mapfunc (--b2, xr);
int y = --b2;
int x2 = spanend[y];
mapfunc (y, xr, x2);
}
// Mark any spans that have just opened
@ -1159,13 +727,16 @@ void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1))
t2 = pl->top[x];
b2 = pl->bottom[x];
basexfrac -= xstepscale;
baseyfrac -= ystepscale;
if (stepfunc)
stepfunc();
}
// Draw any spans that are still open
while (t2 < b2)
{
mapfunc (--b2, pl->left);
int y = --b2;
int x2 = spanend[y];
mapfunc (y, pl->left, x2);
}
ds_light_list = nullptr;

9
src/swrenderer/scene/r_plane.h
View file

@ -36,20 +36,13 @@ extern planefunction_t ceilingfunc_t;
extern short floorclip[MAXWIDTH];
extern short ceilingclip[MAXWIDTH];
extern float yslope[MAXHEIGHT];
void R_ClearPlanes (bool fullclear);
void R_AddPlaneLights(visplane_t *plane, FLightNode *light_head);
int R_DrawPlanes ();
void R_DrawSinglePlane(visplane_t *pl, fixed_t alpha, bool additive, bool masked);
void R_DrawNormalPlane (visplane_t *pl, double xscale, double yscale, fixed_t alpha, bool additive, bool masked);
void R_DrawTiltedPlane (visplane_t *pl, double xscale, double yscale, fixed_t alpha, bool additive, bool masked);
void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1));
void R_MapTiltedPlane(int y, int x1);
void R_MapColoredPlane(int y, int x1);
void R_MapVisPlane (visplane_t *pl, void (*mapfunc)(int y, int x1, int x2), void (*stepfunc)());
void R_DrawFogBoundary(int x1, int x2, short *uclip, short *dclip);

183
src/swrenderer/scene/r_slopeplane.cpp Normal file
View file

@ -0,0 +1,183 @@
#include <stdlib.h>
#include <float.h>
#include "templates.h"
#include "i_system.h"
#include "w_wad.h"
#include "doomdef.h"
#include "doomstat.h"
#include "swrenderer/r_main.h"
#include "swrenderer/scene/r_things.h"
#include "r_sky.h"
#include "stats.h"
#include "v_video.h"
#include "a_sharedglobal.h"
#include "c_console.h"
#include "cmdlib.h"
#include "d_net.h"
#include "g_level.h"
#include "r_bsp.h"
#include "r_slopeplane.h"
#include "r_segs.h"
#include "r_3dfloors.h"
#include "v_palette.h"
#include "r_data/colormaps.h"
#include "swrenderer/drawers/r_draw_rgba.h"
#include "gl/dynlights/gl_dynlight.h"
#include "r_walldraw.h"
#include "r_clip_segment.h"
#include "r_draw_segment.h"
#include "r_portal.h"
#include "r_plane.h"
#include "swrenderer/r_memory.h"
#ifdef _MSC_VER
#pragma warning(disable:4244)
#endif
namespace swrenderer
{
namespace
{
FVector3 plane_sz, plane_su, plane_sv;
float planelightfloat;
bool plane_shade;
int planeshade;
fixed_t pviewx, pviewy;
fixed_t xscale, yscale;
}
void R_DrawTiltedPlane(visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked)
{
using namespace drawerargs;
static const float ifloatpow2[16] =
{
// ifloatpow2[i] = 1 / (1 << i)
64.f, 32.f, 16.f, 8.f, 4.f, 2.f, 1.f, 0.5f,
0.25f, 0.125f, 0.0625f, 0.03125f, 0.015625f, 0.0078125f,
0.00390625f, 0.001953125f
/*, 0.0009765625f, 0.00048828125f, 0.000244140625f,
1.220703125e-4f, 6.103515625e-5, 3.0517578125e-5*/
};
double lxscale, lyscale;
double xscale, yscale;
FVector3 p, m, n;
double ang, planeang, cosine, sine;
double zeroheight;
if (alpha <= 0)
{
return;
}
lxscale = _xscale * ifloatpow2[ds_xbits];
lyscale = _yscale * ifloatpow2[ds_ybits];
xscale = 64.f / lxscale;
yscale = 64.f / lyscale;
zeroheight = pl->height.ZatPoint(ViewPos);
pviewx = xs_ToFixed(32 - ds_xbits, pl->xform.xOffs * pl->xform.xScale);
pviewy = xs_ToFixed(32 - ds_ybits, pl->xform.yOffs * pl->xform.yScale);
planeang = (pl->xform.Angle + pl->xform.baseAngle).Radians();
// p is the texture origin in view space
// Don't add in the offsets at this stage, because doing so can result in
// errors if the flat is rotated.
ang = M_PI * 3 / 2 - ViewAngle.Radians();
cosine = cos(ang), sine = sin(ang);
p[0] = ViewPos.X * cosine - ViewPos.Y * sine;
p[2] = ViewPos.X * sine + ViewPos.Y * cosine;
p[1] = pl->height.ZatPoint(0.0, 0.0) - ViewPos.Z;
// m is the v direction vector in view space
ang = ang - M_PI / 2 - planeang;
cosine = cos(ang), sine = sin(ang);
m[0] = yscale * cosine;
m[2] = yscale * sine;
// m[1] = pl->height.ZatPointF (0, iyscale) - pl->height.ZatPointF (0,0));
// VectorScale2 (m, 64.f/VectorLength(m));
// n is the u direction vector in view space
#if 0
//let's use the sin/cosine we already know instead of computing new ones
ang += M_PI / 2
n[0] = -xscale * cos(ang);
n[2] = -xscale * sin(ang);
#else
n[0] = xscale * sine;
n[2] = -xscale * cosine;
#endif
// n[1] = pl->height.ZatPointF (ixscale, 0) - pl->height.ZatPointF (0,0));
// VectorScale2 (n, 64.f/VectorLength(n));
// This code keeps the texture coordinates constant across the x,y plane no matter
// how much you slope the surface. Use the commented-out code above instead to keep
// the textures a constant size across the surface's plane instead.
cosine = cos(planeang), sine = sin(planeang);
m[1] = pl->height.ZatPoint(ViewPos.X + yscale * sine, ViewPos.Y + yscale * cosine) - zeroheight;
n[1] = -(pl->height.ZatPoint(ViewPos.X - xscale * cosine, ViewPos.Y + xscale * sine) - zeroheight);
plane_su = p ^ m;
plane_sv = p ^ n;
plane_sz = m ^ n;
plane_su.Z *= FocalLengthX;
plane_sv.Z *= FocalLengthX;
plane_sz.Z *= FocalLengthX;
plane_su.Y *= IYaspectMul;
plane_sv.Y *= IYaspectMul;
plane_sz.Y *= IYaspectMul;
// Premultiply the texture vectors with the scale factors
plane_su *= 4294967296.f;
plane_sv *= 4294967296.f;
if (MirrorFlags & RF_XFLIP)
{
plane_su[0] = -plane_su[0];
plane_sv[0] = -plane_sv[0];
plane_sz[0] = -plane_sz[0];
}
planelightfloat = (r_TiltVisibility * lxscale * lyscale) / (fabs(pl->height.ZatPoint(ViewPos) - ViewPos.Z)) / 65536.f;
if (pl->height.fC() > 0)
planelightfloat = -planelightfloat;
if (fixedlightlev >= 0)
{
R_SetDSColorMapLight(basecolormap, 0, FIXEDLIGHT2SHADE(fixedlightlev));
plane_shade = false;
}
else if (fixedcolormap)
{
R_SetDSColorMapLight(fixedcolormap, 0, 0);
plane_shade = false;
}
else
{
R_SetDSColorMapLight(basecolormap, 0, 0);
plane_shade = true;
planeshade = LIGHT2SHADE(pl->lightlevel);
}
// Hack in support for 1 x Z and Z x 1 texture sizes
if (ds_ybits == 0)
{
plane_sv[2] = plane_sv[1] = plane_sv[0] = 0;
}
if (ds_xbits == 0)
{
plane_su[2] = plane_su[1] = plane_su[0] = 0;
}
R_MapVisPlane(pl, R_MapTiltedPlane, nullptr);
}
void R_MapTiltedPlane(int y, int x1, int x2)
{
R_Drawers()->DrawTiltedSpan(y, x1, x2, plane_sz, plane_su, plane_sv, plane_shade, planeshade, planelightfloat, pviewx, pviewy);
}
}

10
src/swrenderer/scene/r_slopeplane.h Normal file
View file

@ -0,0 +1,10 @@
#pragma once
#include "r_visible_plane.h"
namespace swrenderer
{
void R_DrawTiltedPlane(visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked);
void R_MapTiltedPlane(int y, int x1, int x2);
}

4
src/v_draw.cpp
View file

@ -82,9 +82,6 @@ int CleanWidth, CleanHeight;
// Above minus 1 (or 1, if they are already 1)
int CleanXfac_1, CleanYfac_1, CleanWidth_1, CleanHeight_1;
// FillSimplePoly uses this
extern "C" short spanend[MAXHEIGHT];
CVAR (Bool, hud_scale, true, CVAR_ARCHIVE);
// For routines that take RGB colors, cache the previous lookup in case there
@ -1406,6 +1403,7 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
}
// Travel down the right edge and create an outline of that edge.
static short spanend[MAXHEIGHT];
pt1 = toppt;
pt2 = toppt + 1; if (pt2 > npoints) pt2 = 0;
y1 = xs_RoundToInt(points[pt1].Y + 0.5f);