Add tilted plane drawer

This commit is contained in:
Magnus Norddahl 2016-12-06 19:44:28 +01:00
parent bec5d39ca8
commit 30ddcfbc8f
4 changed files with 266 additions and 272 deletions

View File

@ -2266,11 +2266,249 @@ namespace swrenderer
/////////////////////////////////////////////////////////////////////////
DrawTiltedSpanPalCommand::DrawTiltedSpanPalCommand(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy)
: y(y), x1(x1), x2(x2), plane_sz(plane_sz), plane_su(plane_su), plane_sv(plane_sv), plane_shade(plane_shade), planeshade(planeshade), planelightfloat(planelightfloat), pviewx(pviewx), pviewy(pviewy)
{
using namespace drawerargs;
_colormap = ds_colormap;
_destorg = dc_destorg;
_ybits = ds_ybits;
_xbits = ds_xbits;
_source = ds_source;
basecolormapdata = basecolormap->Maps;
}
void DrawTiltedSpanPalCommand::Execute(DrawerThread *thread)
{
if (thread->line_skipped_by_thread(y))
return;
const uint8_t **tiltlighting = thread->tiltlighting;
int width = x2 - x1;
double iz, uz, vz;
uint8_t *fb;
uint32_t u, v;
int i;
iz = plane_sz[2] + plane_sz[1] * (centery - y) + plane_sz[0] * (x1 - centerx);
// Lighting is simple. It's just linear interpolation from start to end
if (plane_shade)
{
uz = (iz + plane_sz[0] * width) * planelightfloat;
vz = iz * planelightfloat;
CalcTiltedLighting(vz, uz, width, thread);
}
else
{
for (int i = 0; i < width; ++i)
{
tiltlighting[i] = _colormap;
}
}
uz = plane_su[2] + plane_su[1] * (centery - y) + plane_su[0] * (x1 - centerx);
vz = plane_sv[2] + plane_sv[1] * (centery - y) + plane_sv[0] * (x1 - centerx);
fb = ylookup[y] + x1 + _destorg;
uint8_t vshift = 32 - _ybits;
uint8_t ushift = vshift - _xbits;
int umask = ((1 << _xbits) - 1) << _ybits;
#if 0
// The "perfect" reference version of this routine. Pretty slow.
// Use it only to see how things are supposed to look.
i = 0;
do
{
double z = 1.f / iz;
u = int64_t(uz*z) + pviewx;
v = int64_t(vz*z) + pviewy;
R_SetDSColorMapLight(tiltlighting[i], 0, 0);
fb[i++] = ds_colormap[ds_source[(v >> vshift) | ((u >> ushift) & umask)]];
iz += plane_sz[0];
uz += plane_su[0];
vz += plane_sv[0];
} while (--width >= 0);
#else
//#define SPANSIZE 32
//#define INVSPAN 0.03125f
//#define SPANSIZE 8
//#define INVSPAN 0.125f
#define SPANSIZE 16
#define INVSPAN 0.0625f
double startz = 1.f / iz;
double startu = uz*startz;
double startv = vz*startz;
double izstep, uzstep, vzstep;
izstep = plane_sz[0] * SPANSIZE;
uzstep = plane_su[0] * SPANSIZE;
vzstep = plane_sv[0] * SPANSIZE;
x1 = 0;
width++;
while (width >= SPANSIZE)
{
iz += izstep;
uz += uzstep;
vz += vzstep;
double endz = 1.f / iz;
double endu = uz*endz;
double endv = vz*endz;
uint32_t stepu = (uint32_t)int64_t((endu - startu) * INVSPAN);
uint32_t stepv = (uint32_t)int64_t((endv - startv) * INVSPAN);
u = (uint32_t)(int64_t(startu) + pviewx);
v = (uint32_t)(int64_t(startv) + pviewy);
for (i = SPANSIZE - 1; i >= 0; i--)
{
fb[x1] = *(tiltlighting[x1] + _source[(v >> vshift) | ((u >> ushift) & umask)]);
x1++;
u += stepu;
v += stepv;
}
startu = endu;
startv = endv;
width -= SPANSIZE;
}
if (width > 0)
{
if (width == 1)
{
u = (uint32_t)int64_t(startu);
v = (uint32_t)int64_t(startv);
fb[x1] = *(tiltlighting[x1] + _source[(v >> vshift) | ((u >> ushift) & umask)]);
}
else
{
double left = width;
iz += plane_sz[0] * left;
uz += plane_su[0] * left;
vz += plane_sv[0] * left;
double endz = 1.f / iz;
double endu = uz*endz;
double endv = vz*endz;
left = 1.f / left;
uint32_t stepu = (uint32_t)int64_t((endu - startu) * left);
uint32_t stepv = (uint32_t)int64_t((endv - startv) * left);
u = (uint32_t)(int64_t(startu) + pviewx);
v = (uint32_t)(int64_t(startv) + pviewy);
for (; width != 0; width--)
{
fb[x1] = *(tiltlighting[x1] + _source[(v >> vshift) | ((u >> ushift) & umask)]);
x1++;
u += stepu;
v += stepv;
}
}
}
#endif
}
// Calculates the lighting for one row of a tilted plane. If the definition
// of GETPALOOKUP changes, this needs to change, too.
void DrawTiltedSpanPalCommand::CalcTiltedLighting(double lval, double lend, int width, DrawerThread *thread)
{
const uint8_t **tiltlighting = thread->tiltlighting;
double lstep;
uint8_t *lightfiller;
int i = 0;
if (width == 0 || lval == lend)
{ // Constant lighting
lightfiller = basecolormapdata + (GETPALOOKUP(lval, planeshade) << COLORMAPSHIFT);
}
else
{
lstep = (lend - lval) / width;
if (lval >= MAXLIGHTVIS)
{ // lval starts "too bright".
lightfiller = basecolormapdata + (GETPALOOKUP(lval, planeshade) << COLORMAPSHIFT);
for (; i <= width && lval >= MAXLIGHTVIS; ++i)
{
tiltlighting[i] = lightfiller;
lval += lstep;
}
}
if (lend >= MAXLIGHTVIS)
{ // lend ends "too bright".
lightfiller = basecolormapdata + (GETPALOOKUP(lend, planeshade) << COLORMAPSHIFT);
for (; width > i && lend >= MAXLIGHTVIS; --width)
{
tiltlighting[width] = lightfiller;
lend -= lstep;
}
}
if (width > 0)
{
lval = FIXED2DBL(planeshade) - lval;
lend = FIXED2DBL(planeshade) - lend;
lstep = (lend - lval) / width;
if (lstep < 0)
{ // Going from dark to light
if (lval < 1.)
{ // All bright
lightfiller = basecolormapdata;
}
else
{
if (lval >= NUMCOLORMAPS)
{ // Starts beyond the dark end
uint8_t *clight = basecolormapdata + ((NUMCOLORMAPS - 1) << COLORMAPSHIFT);
while (lval >= NUMCOLORMAPS && i <= width)
{
tiltlighting[i++] = clight;
lval += lstep;
}
if (i > width)
return;
}
while (i <= width && lval >= 0)
{
tiltlighting[i++] = basecolormapdata + (xs_ToInt(lval) << COLORMAPSHIFT);
lval += lstep;
}
lightfiller = basecolormapdata;
}
}
else
{ // Going from light to dark
if (lval >= (NUMCOLORMAPS - 1))
{ // All dark
lightfiller = basecolormapdata + ((NUMCOLORMAPS - 1) << COLORMAPSHIFT);
}
else
{
while (lval < 0 && i <= width)
{
tiltlighting[i++] = basecolormapdata;
lval += lstep;
}
if (i > width)
return;
while (i <= width && lval < (NUMCOLORMAPS - 1))
{
tiltlighting[i++] = basecolormapdata + (xs_ToInt(lval) << COLORMAPSHIFT);
lval += lstep;
}
lightfiller = basecolormapdata + ((NUMCOLORMAPS - 1) << COLORMAPSHIFT);
}
}
}
}
for (; i <= width; i++)
{
tiltlighting[i] = lightfiller;
}
}
/////////////////////////////////////////////////////////////////////////

View File

@ -180,6 +180,28 @@ namespace swrenderer
DrawTiltedSpanPalCommand(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy);
void Execute(DrawerThread *thread) override;
FString DebugInfo() override { return "DrawTiltedSpanPalCommand"; }
private:
void CalcTiltedLighting(double lval, double lend, int width, DrawerThread *thread);
int y;
int x1;
int x2;
FVector3 plane_sz;
FVector3 plane_su;
FVector3 plane_sv;
bool plane_shade;
int planeshade;
float planelightfloat;
fixed_t pviewx;
fixed_t pviewy;
const uint8_t *_colormap;
uint8_t *_destorg;
int _ybits;
int _xbits;
const uint8_t *_source;
uint8_t *basecolormapdata;
};
class DrawColoredSpanPalCommand : public PalSpanCommand

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@ -138,15 +138,12 @@ extern "C" {
// spanend holds the end of a plane span in each screen row
//
short spanend[MAXHEIGHT];
BYTE *tiltlighting[MAXWIDTH];
int planeshade;
FVector3 plane_sz, plane_su, plane_sv;
float planelightfloat;
bool plane_shade;
fixed_t pviewx, pviewy;
void R_DrawTiltedPlane_ASM (int y, int x1);
}
float yslope[MAXHEIGHT];
@ -154,13 +151,6 @@ static fixed_t xscale, yscale;
static double xstepscale, ystepscale;
static double basexfrac, baseyfrac;
#ifdef X86_ASM
extern "C" void R_SetSpanSource_ASM (const BYTE *flat);
extern "C" void R_SetSpanSize_ASM (int xbits, int ybits);
extern "C" void R_SetSpanColormap_ASM (BYTE *colormap);
extern "C" void R_SetTiltedSpanSource_ASM (const BYTE *flat);
extern "C" BYTE *ds_curcolormap, *ds_cursource, *ds_curtiltedsource;
#endif
void R_DrawSinglePlane (visplane_t *, fixed_t alpha, bool additive, bool masked);
//==========================================================================
@ -264,11 +254,6 @@ void R_MapPlane (int y, int x1)
R_SetDSColorMapLight(basecolormap, GlobVis * fabs(CenterY - y), planeshade);
}
#ifdef X86_ASM
if (!r_swtruecolor && ds_colormap != ds_curcolormap)
R_SetSpanColormap_ASM (ds_colormap);
#endif
ds_y = y;
ds_x1 = x1;
ds_x2 = x2;
@ -276,241 +261,12 @@ void R_MapPlane (int y, int x1)
spanfunc ();
}
//==========================================================================
//
// R_CalcTiltedLighting
//
// Calculates the lighting for one row of a tilted plane. If the definition
// of GETPALOOKUP changes, this needs to change, too.
//
//==========================================================================
extern "C" {
void R_CalcTiltedLighting (double lval, double lend, int width)
{
double lstep;
BYTE *lightfiller;
BYTE *basecolormapdata = basecolormap->Maps;
int i = 0;
if (width == 0 || lval == lend)
{ // Constant lighting
lightfiller = basecolormapdata + (GETPALOOKUP(lval, planeshade) << COLORMAPSHIFT);
}
else
{
lstep = (lend - lval) / width;
if (lval >= MAXLIGHTVIS)
{ // lval starts "too bright".
lightfiller = basecolormapdata + (GETPALOOKUP(lval, planeshade) << COLORMAPSHIFT);
for (; i <= width && lval >= MAXLIGHTVIS; ++i)
{
tiltlighting[i] = lightfiller;
lval += lstep;
}
}
if (lend >= MAXLIGHTVIS)
{ // lend ends "too bright".
lightfiller = basecolormapdata + (GETPALOOKUP(lend, planeshade) << COLORMAPSHIFT);
for (; width > i && lend >= MAXLIGHTVIS; --width)
{
tiltlighting[width] = lightfiller;
lend -= lstep;
}
}
if (width > 0)
{
lval = FIXED2DBL(planeshade) - lval;
lend = FIXED2DBL(planeshade) - lend;
lstep = (lend - lval) / width;
if (lstep < 0)
{ // Going from dark to light
if (lval < 1.)
{ // All bright
lightfiller = basecolormapdata;
}
else
{
if (lval >= NUMCOLORMAPS)
{ // Starts beyond the dark end
BYTE *clight = basecolormapdata + ((NUMCOLORMAPS-1) << COLORMAPSHIFT);
while (lval >= NUMCOLORMAPS && i <= width)
{
tiltlighting[i++] = clight;
lval += lstep;
}
if (i > width)
return;
}
while (i <= width && lval >= 0)
{
tiltlighting[i++] = basecolormapdata + (xs_ToInt(lval) << COLORMAPSHIFT);
lval += lstep;
}
lightfiller = basecolormapdata;
}
}
else
{ // Going from light to dark
if (lval >= (NUMCOLORMAPS-1))
{ // All dark
lightfiller = basecolormapdata + ((NUMCOLORMAPS-1) << COLORMAPSHIFT);
}
else
{
while (lval < 0 && i <= width)
{
tiltlighting[i++] = basecolormapdata;
lval += lstep;
}
if (i > width)
return;
while (i <= width && lval < (NUMCOLORMAPS-1))
{
tiltlighting[i++] = basecolormapdata + (xs_ToInt(lval) << COLORMAPSHIFT);
lval += lstep;
}
lightfiller = basecolormapdata + ((NUMCOLORMAPS-1) << COLORMAPSHIFT);
}
}
}
}
for (; i <= width; i++)
{
tiltlighting[i] = lightfiller;
}
}
} // extern "C"
//==========================================================================
//
// R_MapTiltedPlane
//
//==========================================================================
void R_MapTiltedPlane_C (int y, int x1)
{
int x2 = spanend[y];
int width = x2 - x1;
double iz, uz, vz;
BYTE *fb;
DWORD u, v;
int i;
iz = plane_sz[2] + plane_sz[1] * (centery - y) + plane_sz[0] * (x1 - centerx);
// Lighting is simple. It's just linear interpolation from start to end
if (plane_shade)
{
uz = (iz + plane_sz[0] * width) * planelightfloat;
vz = iz * planelightfloat;
R_CalcTiltedLighting(vz, uz, width);
}
uz = plane_su[2] + plane_su[1] * (centery - y) + plane_su[0] * (x1 - centerx);
vz = plane_sv[2] + plane_sv[1] * (centery - y) + plane_sv[0] * (x1 - centerx);
fb = ylookup[y] + x1 + dc_destorg;
BYTE vshift = 32 - ds_ybits;
BYTE ushift = vshift - ds_xbits;
int umask = ((1 << ds_xbits) - 1) << ds_ybits;
#if 0 // The "perfect" reference version of this routine. Pretty slow.
// Use it only to see how things are supposed to look.
i = 0;
do
{
double z = 1.f/iz;
u = SQWORD(uz*z) + pviewx;
v = SQWORD(vz*z) + pviewy;
R_SetDSColorMapLight(tiltlighting[i], 0, 0);
fb[i++] = ds_colormap[ds_source[(v >> vshift) | ((u >> ushift) & umask)]];
iz += plane_sz[0];
uz += plane_su[0];
vz += plane_sv[0];
} while (--width >= 0);
#else
//#define SPANSIZE 32
//#define INVSPAN 0.03125f
//#define SPANSIZE 8
//#define INVSPAN 0.125f
#define SPANSIZE 16
#define INVSPAN 0.0625f
double startz = 1.f/iz;
double startu = uz*startz;
double startv = vz*startz;
double izstep, uzstep, vzstep;
izstep = plane_sz[0] * SPANSIZE;
uzstep = plane_su[0] * SPANSIZE;
vzstep = plane_sv[0] * SPANSIZE;
x1 = 0;
width++;
while (width >= SPANSIZE)
{
iz += izstep;
uz += uzstep;
vz += vzstep;
double endz = 1.f/iz;
double endu = uz*endz;
double endv = vz*endz;
DWORD stepu = SQWORD((endu - startu) * INVSPAN);
DWORD stepv = SQWORD((endv - startv) * INVSPAN);
u = SQWORD(startu) + pviewx;
v = SQWORD(startv) + pviewy;
for (i = SPANSIZE-1; i >= 0; i--)
{
fb[x1] = *(tiltlighting[x1] + ds_source[(v >> vshift) | ((u >> ushift) & umask)]);
x1++;
u += stepu;
v += stepv;
}
startu = endu;
startv = endv;
width -= SPANSIZE;
}
if (width > 0)
{
if (width == 1)
{
u = SQWORD(startu);
v = SQWORD(startv);
fb[x1] = *(tiltlighting[x1] + ds_source[(v >> vshift) | ((u >> ushift) & umask)]);
}
else
{
double left = width;
iz += plane_sz[0] * left;
uz += plane_su[0] * left;
vz += plane_sv[0] * left;
double endz = 1.f/iz;
double endu = uz*endz;
double endv = vz*endz;
left = 1.f/left;
DWORD stepu = SQWORD((endu - startu) * left);
DWORD stepv = SQWORD((endv - startv) * left);
u = SQWORD(startu) + pviewx;
v = SQWORD(startv) + pviewy;
for (; width != 0; width--)
{
fb[x1] = *(tiltlighting[x1] + ds_source[(v >> vshift) | ((u >> ushift) & umask)]);
x1++;
u += stepu;
v += stepv;
}
}
}
#endif
}
void R_MapTiltedPlane (int y, int x1)
{
R_DrawTiltedSpan(y, x1, spanend[y], plane_sz, plane_su, plane_sv, plane_shade, planeshade, planelightfloat, pviewx, pviewy);
@ -1779,13 +1535,6 @@ void R_DrawSkyPlane (visplane_t *pl)
void R_DrawNormalPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t alpha, bool additive, bool masked)
{
#ifdef X86_ASM
if (!r_swtruecolor && ds_source != ds_cursource)
{
R_SetSpanSource_ASM (ds_source);
}
#endif
if (alpha <= 0)
{
return;
@ -2036,14 +1785,6 @@ void R_DrawTiltedPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t
plane_shade = true;
}
if (!plane_shade)
{
for (int i = 0; i < viewwidth; ++i)
{
tiltlighting[i] = ds_colormap;
}
}
// Hack in support for 1 x Z and Z x 1 texture sizes
if (ds_ybits == 0)
{
@ -2053,20 +1794,8 @@ void R_DrawTiltedPlane (visplane_t *pl, double _xscale, double _yscale, fixed_t
{
plane_su[2] = plane_su[1] = plane_su[0] = 0;
}
#if defined(X86_ASM)
if (!r_swtruecolor)
{
if (ds_source != ds_curtiltedsource)
R_SetTiltedSpanSource_ASM(ds_source);
R_MapVisPlane(pl, R_DrawTiltedPlane_ASM);
}
else
{
R_MapVisPlane(pl, R_MapTiltedPlane);
}
#else
R_MapVisPlane (pl, R_MapTiltedPlane);
#endif
}
//==========================================================================

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@ -54,12 +54,17 @@ public:
int pass_start_y = 0;
int pass_end_y = MAXHEIGHT;
// Working buffer used by Rt drawers
uint8_t dc_temp_buff[MAXHEIGHT * 4];
uint8_t *dc_temp = nullptr;
// Working buffer used by Rt drawers, true color edition
uint32_t dc_temp_rgbabuff_rgba[MAXHEIGHT * 4];
uint32_t *dc_temp_rgba = nullptr;
// Working buffer used by the tilted (sloped) span drawer
const uint8_t *tiltlighting[MAXWIDTH];
// Checks if a line is rendered by this thread
bool line_skipped_by_thread(int line)
{