void GL_RecalcLowerWall(seg_t *seg, sector_t *frontSector, gl_poly_t *poly)
{
FTexture *tex = TexMan(seg->sidedef->bottomtexture);
float txScale, tyScale, yOffset, xOffset, dist, texHeight;
float v1[5], v2[5], v3[5], v4[5];
float upperHeight, lowerHeight;
texcoord_t ll, ul, lr, ur;
sector_t *backSector, ts2;
vertex_t *vert1, *vert2;
fixed_t h1, h2;
if (!poly->initialized) GL_InitPolygon(poly);
poly->lastUpdate = frameStartMS;
poly->initialized = true;
vert1 = seg->v1;
vert2 = seg->v2;
dist = seg->length;
backSector = R_FakeFlat(seg->backsector, &ts2, NULL, NULL, false);
h1 = (backSector->floorplane.ZatPoint(vert1) - frontSector->floorplane.ZatPoint(vert1));
h2 = (backSector->floorplane.ZatPoint(vert2) - frontSector->floorplane.ZatPoint(vert2));
v1[0] = v3[0] = -vert1->x * MAP_SCALE;
v1[2] = v3[2] = vert1->y * MAP_SCALE;
v2[0] = v4[0] = -vert2->x * MAP_SCALE;
v2[2] = v4[2] = vert2->y * MAP_SCALE;
v1[1] = (float)frontSector->floorplane.ZatPoint(vert1);
v2[1] = (float)frontSector->floorplane.ZatPoint(vert2);
v3[1] = v1[1] + h1;
v4[1] = v2[1] + h2;
// texscale: 8 = 1.0, 16 = 2.0, 4 = 0.5
txScale = tex->ScaleX ? tex->ScaleX / 8.f : 1.f;
tyScale = tex->ScaleY ? tex->ScaleY / 8.f : 1.f;
xOffset = (seg->offset * txScale) * INV_FRACUNIT;
ll.x = xOffset / tex->GetWidth();
ul.x = ll.x;
lr.x = ll.x + (dist / tex->GetWidth() * txScale);
ur.x = lr.x;
ul.y = ur.y = 1.f;
ll.y = lr.y = 0.f;
if (tex)
{
texHeight = tex->GetHeight() / tyScale;
lowerHeight = frontSector->floortexz * INV_FRACUNIT;
upperHeight = backSector->floortexz * INV_FRACUNIT;
if (seg->linedef->flags & ML_DONTPEGBOTTOM)
{
yOffset = (frontSector->ceilingtexz - backSector->floortexz) * INV_FRACUNIT;
}
else
{
yOffset = 0.f;
}
ul.y = ur.y = (yOffset + upperHeight - lowerHeight) / texHeight;
ll.y = lr.y = yOffset / texHeight;
// scale the coordinates
//ul.y *= tyScale;
//ur.y *= tyScale;
//ll.y *= tyScale;
//lr.y *= tyScale;
// adjust for slopes
ul.y -= ((v1[1] * INV_FRACUNIT) - lowerHeight) / texHeight;
ur.y -= ((v2[1] * INV_FRACUNIT) - lowerHeight) / texHeight;
ll.y += (upperHeight - (v3[1] * INV_FRACUNIT)) / texHeight;
lr.y += (upperHeight - (v4[1] * INV_FRACUNIT)) / texHeight;
}
v1[1] *= MAP_SCALE;
v2[1] *= MAP_SCALE;
v3[1] *= MAP_SCALE;
v4[1] *= MAP_SCALE;
v1[3] = ul.x; v1[4] = ul.y;
v2[3] = ur.x; v2[4] = ur.y;
v3[3] = ll.x; v3[4] = ll.y;
v4[3] = lr.x; v4[4] = lr.y;
memcpy(poly->vertices + (0 * 3), v3, sizeof(float) * 3);
memcpy(poly->vertices + (1 * 3), v1, sizeof(float) * 3);
memcpy(poly->vertices + (2 * 3), v2, sizeof(float) * 3);
memcpy(poly->vertices + (3 * 3), v4, sizeof(float) * 3);
memcpy(poly->texCoords + (0 * 2), v3 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (1 * 2), v1 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (2 * 2), v2 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (3 * 2), v4 + 3, sizeof(float) * 2);
}
void RenderPolyWallSprite::Render(const TriMatrix &worldToClip, const PolyClipPlane &clipPlane, AActor *thing, subsector_t *sub, uint32_t subsectorDepth, uint32_t stencilValue)
{
if (RenderPolySprite::IsThingCulled(thing))
return;
const auto &viewpoint = PolyRenderer::Instance()->Viewpoint;
DVector3 pos = thing->InterpolatedPosition(viewpoint.TicFrac);
pos.Z += thing->GetBobOffset(viewpoint.TicFrac);
bool flipTextureX = false;
FTexture *tex = RenderPolySprite::GetSpriteTexture(thing, flipTextureX);
if (tex == nullptr || tex->UseType == FTexture::TEX_Null)
return;
DVector2 spriteScale = thing->Scale;
double thingxscalemul = spriteScale.X / tex->Scale.X;
double thingyscalemul = spriteScale.Y / tex->Scale.Y;
double spriteHeight = thingyscalemul * tex->GetHeight();
DAngle ang = thing->Angles.Yaw + 90;
double angcos = ang.Cos();
double angsin = ang.Sin();
// Determine left and right edges of sprite. The sprite's angle is its normal,
// so the edges are 90 degrees each side of it.
double x2 = tex->GetScaledWidth() * spriteScale.X;
double x1 = tex->GetScaledLeftOffset() * spriteScale.X;
DVector2 left, right;
left.X = pos.X - x1 * angcos;
left.Y = pos.Y - x1 * angsin;
right.X = left.X + x2 * angcos;
right.Y = left.Y + x2 * angsin;
//int scaled_to = tex->GetScaledTopOffset();
//int scaled_bo = scaled_to - tex->GetScaledHeight();
//gzt = pos.Z + scale.Y * scaled_to;
//gzb = pos.Z + scale.Y * scaled_bo;
DVector2 points[2] = { left, right };
TriVertex *vertices = PolyRenderer::Instance()->FrameMemory.AllocMemory<TriVertex>(4);
bool foggy = false;
int actualextralight = foggy ? 0 : viewpoint.extralight << 4;
std::pair<float, float> offsets[4] =
{
{ 0.0f, 1.0f },
{ 1.0f, 1.0f },
{ 1.0f, 0.0f },
{ 0.0f, 0.0f },
};
for (int i = 0; i < 4; i++)
{
auto &p = (i == 0 || i == 3) ? points[0] : points[1];
vertices[i].x = (float)p.X;
vertices[i].y = (float)p.Y;
vertices[i].z = (float)(pos.Z + spriteHeight * offsets[i].second);
vertices[i].w = 1.0f;
vertices[i].u = (float)(offsets[i].first * tex->Scale.X);
vertices[i].v = (float)((1.0f - offsets[i].second) * tex->Scale.Y);
if (flipTextureX)
vertices[i].u = 1.0f - vertices[i].u;
}
bool fullbrightSprite = ((thing->renderflags & RF_FULLBRIGHT) || (thing->flags5 & MF5_BRIGHT));
int lightlevel = fullbrightSprite ? 255 : thing->Sector->lightlevel + actualextralight;
PolyDrawArgs args;
args.SetLight(GetColorTable(sub->sector->Colormap, sub->sector->SpecialColors[sector_t::sprites], true), lightlevel, PolyRenderer::Instance()->Light.WallGlobVis(foggy), fullbrightSprite);
args.SetTransform(&worldToClip);
args.SetFaceCullCCW(true);
args.SetStencilTestValue(stencilValue);
args.SetTexture(tex);
args.SetClipPlane(clipPlane);
args.SetSubsectorDepthTest(true);
args.SetWriteSubsectorDepth(false);
args.SetWriteStencil(false);
args.SetStyle(TriBlendMode::TextureMasked);
args.DrawArray(vertices, 4, PolyDrawMode::TriangleFan);
}
void GL_RecalcMidWall(seg_t *seg, sector_t *frontSector, gl_poly_t *poly)
{
float height1, height2, v1[5], v2[5], v3[5], v4[5], txScale, tyScale;
float yOffset1, yOffset2, yOffset, xOffset;
float upperHeight, lowerHeight;
float tmpOffset = seg->sidedef->rowoffset * INV_FRACUNIT;
long offset = 0;
int texHeight;
FTexture *tex = NULL;
texcoord_t ll, ul, lr, ur;
sector_t *backSector, ts2;
vertex_t *vert1, *vert2;
if (!poly->initialized) GL_InitPolygon(poly);
poly->lastUpdate = frameStartMS;
poly->initialized = true;
tex = TexMan(seg->sidedef->midtexture);
vert1 = seg->v1;
vert2 = seg->v2;
backSector = R_FakeFlat(seg->backsector, &ts2, NULL, NULL, false);
v1[0] = -vert1->x * MAP_SCALE;
v1[2] = vert1->y * MAP_SCALE;
v2[0] = -vert2->x * MAP_SCALE;
v2[2] = vert2->y * MAP_SCALE;
v1[1] = (float)frontSector->floorplane.ZatPoint(seg->v1);
v2[1] = (float)frontSector->floorplane.ZatPoint(seg->v2);
if ((seg->linedef->special == Line_Mirror && seg->backsector == NULL) || tex == NULL)
{
if (backSector)
{
height1 = (float)backSector->ceilingplane.ZatPoint(vert1);
height2 = (float)backSector->ceilingplane.ZatPoint(vert2);
}
else
{
height1 = (float)frontSector->ceilingplane.ZatPoint(vert1);
height2 = (float)frontSector->ceilingplane.ZatPoint(vert2);
}
}
else
{
//yOffset = seg->sidedef->rowoffset * INV_FRACUNIT;
yOffset = 0.f;
tmpOffset = 0.f;
offset = seg->sidedef->rowoffset;
yOffset1 = yOffset2 = yOffset;
// texscale: 8 = 1.0, 16 = 2.0, 4 = 0.5
txScale = tex->ScaleX ? tex->ScaleX / 8.f : 1.f;
tyScale = tex->ScaleY ? tex->ScaleY / 8.f : 1.f;
xOffset = (seg->offset * txScale) * INV_FRACUNIT;
texHeight = (int)(tex->GetHeight() / tyScale);
textureList.GetTexture(seg->sidedef->midtexture, true);
ll.x = xOffset / tex->GetWidth();
ul.x = ll.x;
lr.x = ll.x + (seg->length / tex->GetWidth() * txScale);
ur.x = lr.x;
if (backSector)
{
height1 = (float)MIN(frontSector->ceilingplane.ZatPoint(vert1), backSector->ceilingplane.ZatPoint(vert1));
height2 = (float)MIN(frontSector->ceilingplane.ZatPoint(vert2), backSector->ceilingplane.ZatPoint(vert2));
}
else
{
height1 = (float)frontSector->ceilingplane.ZatPoint(vert1);
height2 = (float)frontSector->ceilingplane.ZatPoint(vert2);
}
if (backSector && (textureList.IsTransparent() || seg->linedef->flags & ML_TWOSIDED))
{
int h = texHeight;
#if 0
if (seg->linedef->flags & ML_DONTPEGBOTTOM)
{
if (backSector)
{
v1[1] = MAX (frontSector->floortexz, backSector->floortexz) + offset;
v2[1] = MAX (frontSector->floortexz, backSector->floortexz) + offset;
}
else
{
v1[1] = frontSector->floortexz + offset;
v2[1] = frontSector->floortexz + offset;
}
}
else
{
if (backSector)
{
v1[1] = MIN (frontSector->ceilingtexz, backSector->ceilingtexz) + offset - (h << FRACBITS);
v2[1] = MIN (frontSector->ceilingtexz, backSector->ceilingtexz) + offset - (h << FRACBITS);
}
else
{
v1[1] = frontSector->ceilingtexz + offset - (h << FRACBITS);
v2[1] = frontSector->ceilingtexz + offset - (h << FRACBITS);
}
}
height1 = (h << FRACBITS) + v1[1];
height2 = (h << FRACBITS) + v2[1];
#else
float rbceil = (float)backSector->ceilingtexz,
rbfloor = (float)backSector->floortexz,
rfceil = (float)frontSector->ceilingtexz,
rffloor = (float)frontSector->floortexz;
float gaptop, gapbottom;
yOffset = (float)seg->sidedef->rowoffset;
height1 = gaptop = MIN(rbceil, rfceil);
v1[1] = gapbottom = MAX(rbfloor, rffloor);
if (seg->linedef->flags & ML_DONTPEGBOTTOM)
{
v1[1] += yOffset;
height1 = v1[1] + (tex->GetHeight() * FRACUNIT);
}
else
{
height1 += yOffset;
v1[1] = height1 - (tex->GetHeight() * FRACUNIT);
}
height2 = height1;
v2[1] = v1[1];
#endif
}
}
// make sure to clip the geometry to the back sector...
if (backSector)
{
if (seg->sidedef->bottomtexture)
{
v1[1] = MAX(v1[1], backSector->floorplane.ZatPoint(seg->v1));
v2[1] = MAX(v2[1], backSector->floorplane.ZatPoint(seg->v2));
}
if (seg->sidedef->toptexture)
{
height1 = MIN(height1, backSector->ceilingplane.ZatPoint(seg->v1));
height2 = MIN(height2, backSector->ceilingplane.ZatPoint(seg->v2));
}
}
memcpy(v3, v1, sizeof(float) * 3);
memcpy(v4, v2, sizeof(float) * 3);
ul.y = ur.y = 1.f;
ll.y = lr.y = 0.f;
if (tex)
{
yOffset = 0.f;
// code borrowed from Legacy ;)
// damn pegged/unpegged/two sided lines!
if (backSector)
{
float worldHigh = backSector->ceilingtexz * INV_FRACUNIT;
float worldLow = backSector->floortexz * INV_FRACUNIT;
float polyBottom, polyTop;
lowerHeight = frontSector->floortexz * INV_FRACUNIT;
upperHeight = frontSector->ceilingtexz * INV_FRACUNIT;
float openTop = upperHeight < worldHigh ? upperHeight : worldHigh;
float openBottom = lowerHeight > worldLow ? lowerHeight : worldLow;
if (seg->linedef->flags & ML_DONTPEGBOTTOM)
{
polyBottom = openBottom + seg->sidedef->rowoffset * INV_FRACUNIT;
polyTop = polyBottom + texHeight;
upperHeight = MIN(openTop, polyTop);
lowerHeight = MAX(openBottom, polyBottom);
yOffset = lowerHeight + texHeight - upperHeight + polyBottom - lowerHeight;
}
else
{
polyTop = openTop + seg->sidedef->rowoffset * INV_FRACUNIT;
polyBottom = polyTop - texHeight;
yOffset = polyTop - upperHeight;
}
}
else
{
lowerHeight = frontSector->floortexz * INV_FRACUNIT;
upperHeight = frontSector->ceilingtexz * INV_FRACUNIT;
yOffset = 0.f;
if (seg->linedef->flags & ML_DONTPEGBOTTOM)
{
yOffset += lowerHeight + texHeight - upperHeight;
}
}
ll.y = lr.y = yOffset / texHeight;
ul.y = ur.y = ll.y + ((upperHeight - lowerHeight) / texHeight);
// scale the coordinates
//ul.y *= tyScale;
//ur.y *= tyScale;
//ll.y *= tyScale;
//lr.y *= tyScale;
// clip to slopes
ul.y -= ((v1[1] * INV_FRACUNIT) - lowerHeight) / texHeight;
ur.y -= ((v2[1] * INV_FRACUNIT) - lowerHeight) / texHeight;
ll.y += (upperHeight - (height1 * INV_FRACUNIT)) / texHeight;
lr.y += (upperHeight - (height2 * INV_FRACUNIT)) / texHeight;
}
v1[1] *= MAP_SCALE;
v2[1] *= MAP_SCALE;
v3[1] = height1 * MAP_SCALE;
v4[1] = height2 * MAP_SCALE;
v1[3] = ul.x; v1[4] = ul.y;
v2[3] = ur.x; v2[4] = ur.y;
v3[3] = ll.x; v3[4] = ll.y;
v4[3] = lr.x; v4[4] = lr.y;
memcpy(poly->vertices + (0 * 3), v3, sizeof(float) * 3);
memcpy(poly->vertices + (1 * 3), v1, sizeof(float) * 3);
memcpy(poly->vertices + (2 * 3), v2, sizeof(float) * 3);
memcpy(poly->vertices + (3 * 3), v4, sizeof(float) * 3);
memcpy(poly->texCoords + (0 * 2), v3 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (1 * 2), v1 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (2 * 2), v2 + 3, sizeof(float) * 2);
memcpy(poly->texCoords + (3 * 2), v4 + 3, sizeof(float) * 2);
}
void GL_DrawSky()
{
float angle;
FTexture *tex;
bool drawBoth = false;
int sky1tex, sky2tex;
int s1p, s2p;
drawBoth = !((level.flags & LEVEL_SWAPSKIES) || (sky2texture == sky1texture));
if ((level.flags & LEVEL_SWAPSKIES) || (sky2texture == sky1texture))
{
sky1tex = sky2texture;
s1p = sky2pos;
sky2tex = sky1texture;
s2p = sky1pos;
}
else
{
sky1tex = sky1texture;
s1p = sky1pos;
sky2tex = sky2texture;
s2p = sky2pos;
}
glDepthMask(GL_FALSE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_FOG);
glDisable(GL_ALPHA_TEST);
glPushMatrix();
angle = s2p * 1.f / (FRACUNIT * 2.f);
glRotatef(-angle, 0.f, 1.f, 0.f);
textureList.BindTexture(sky2tex, true);
tex = TexMan(sky2tex);
texw = tex->GetWidth();
texh = tex->GetHeight();
tx = ty = 1.f;
yMult = 1.f;
GL_RenderSkyHemisphere(SKYHEMI_UPPER);
GL_RenderSkyHemisphere(SKYHEMI_LOWER);
if (drawBoth)
{
angle = (s1p * 1.f / (FRACUNIT * 2.f)) - angle;
glRotatef(-angle, 0.f, 1.f, 0.f);
tex = TexMan(sky1tex);
textureList.BindTexture(sky1tex, true);
texw = tex->GetWidth();
texh = tex->GetHeight();
if (level.flags & LEVEL_DOUBLESKY && texh <= 128)
{
yMult = 2.f;
}
tx = ty = 1.f;
GL_RenderSkyHemisphere(SKYHEMI_UPPER);
GL_RenderSkyHemisphere(SKYHEMI_LOWER);
}
glPopMatrix();
glEnable(GL_DEPTH_TEST);
glEnable(GL_ALPHA_TEST);
glFogf(GL_FOG_MODE, GL_EXP);
glDepthMask(GL_TRUE);
if (gl_depthfog && !Player->fixedcolormap)
{
glEnable(GL_FOG);
}
}
void RenderDecal::Render(RenderThread *thread, side_t *wall, DBaseDecal *decal, DrawSegment *clipper, int wallshade, float lightleft, float lightstep, seg_t *curline, const FWallCoords &savecoord, bool foggy, FDynamicColormap *basecolormap, const short *walltop, const short *wallbottom, bool drawsegPass)
{
DVector2 decal_left, decal_right, decal_pos;
int x1, x2;
double yscale;
uint8_t flipx;
double zpos;
int needrepeat = 0;
sector_t *back;
bool calclighting;
bool rereadcolormap;
FDynamicColormap *usecolormap;
float light = 0;
const short *mfloorclip;
const short *mceilingclip;
if (decal->RenderFlags & RF_INVISIBLE || !viewactive || !decal->PicNum.isValid())
return;
// Determine actor z
zpos = decal->Z;
back = (curline->backsector != NULL) ? curline->backsector : curline->frontsector;
// for 3d-floor segments use the model sector as reference
sector_t *front;
if ((decal->RenderFlags&RF_CLIPMASK) == RF_CLIPMID) front = decal->Sector;
else front = curline->frontsector;
switch (decal->RenderFlags & RF_RELMASK)
{
default:
zpos = decal->Z;
break;
case RF_RELUPPER:
if (curline->linedef->flags & ML_DONTPEGTOP)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + back->GetPlaneTexZ(sector_t::ceiling);
}
break;
case RF_RELLOWER:
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + back->GetPlaneTexZ(sector_t::floor);
}
break;
case RF_RELMID:
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::floor);
}
else
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
}
FTexture *WallSpriteTile = TexMan(decal->PicNum, true);
flipx = (uint8_t)(decal->RenderFlags & RF_XFLIP);
if (WallSpriteTile == NULL || WallSpriteTile->UseType == ETextureType::Null)
{
return;
}
// Determine left and right edges of sprite. Since this sprite is bound
// to a wall, we use the wall's angle instead of the decal's. This is
// pretty much the same as what R_AddLine() does.
double edge_right = WallSpriteTile->GetWidth();
double edge_left = WallSpriteTile->GetLeftOffset(0); // decals should not use renderer-specific offsets.
edge_right = (edge_right - edge_left) * decal->ScaleX;
edge_left *= decal->ScaleX;
double dcx, dcy;
decal->GetXY(wall, dcx, dcy);
decal_pos = { dcx, dcy };
DVector2 angvec = (curline->v2->fPos() - curline->v1->fPos()).Unit();
float maskedScaleY;
decal_left = decal_pos - edge_left * angvec - thread->Viewport->viewpoint.Pos;
decal_right = decal_pos + edge_right * angvec - thread->Viewport->viewpoint.Pos;
CameraLight *cameraLight;
double texturemid;
FWallCoords WallC;
if (WallC.Init(thread, decal_left, decal_right, TOO_CLOSE_Z))
return;
x1 = WallC.sx1;
x2 = WallC.sx2;
if (x1 >= clipper->x2 || x2 <= clipper->x1)
return;
FWallTmapVals WallT;
WallT.InitFromWallCoords(thread, &WallC);
if (drawsegPass)
{
uint32_t clipMode = decal->RenderFlags & RF_CLIPMASK;
if (clipMode != RF_CLIPMID && clipMode != RF_CLIPFULL)
return;
// Clip decal to stay within the draw segment wall
mceilingclip = walltop;
mfloorclip = wallbottom;
// Rumor has it that if RT_CLIPMASK is specified then the decal should be clipped according
// to the full drawsegment visibility, as implemented in the remarked section below.
//
// This is problematic because not all 3d floors may have been drawn yet at this point. The
// code below might work ok for cases where there is only one 3d floor.
/*if (clipMode == RF_CLIPFULL)
{
mceilingclip = clipper->sprtopclip - clipper->x1;
mfloorclip = clipper->sprbottomclip - clipper->x1;
}*/
}
else
{
// Get the top and bottom clipping arrays
switch (decal->RenderFlags & RF_CLIPMASK)
{
default:
// keep GCC quiet.
return;
case RF_CLIPFULL:
if (curline->backsector == NULL)
{
mceilingclip = walltop;
mfloorclip = wallbottom;
}
else
{
mceilingclip = walltop;
mfloorclip = thread->OpaquePass->ceilingclip;
needrepeat = 1;
}
break;
case RF_CLIPUPPER:
mceilingclip = walltop;
mfloorclip = thread->OpaquePass->ceilingclip;
break;
case RF_CLIPMID:
return;
case RF_CLIPLOWER:
mceilingclip = thread->OpaquePass->floorclip;
mfloorclip = wallbottom;
break;
}
}
yscale = decal->ScaleY;
texturemid = WallSpriteTile->GetTopOffset(0) + (zpos - thread->Viewport->viewpoint.Pos.Z) / yscale;
// Clip sprite to drawseg
x1 = MAX<int>(clipper->x1, x1);
x2 = MIN<int>(clipper->x2, x2);
if (x1 >= x2)
{
return;
}
ProjectedWallTexcoords walltexcoords;
walltexcoords.Project(thread->Viewport.get(), WallSpriteTile->GetWidth(), x1, x2, WallT);
if (flipx)
{
int i;
int right = (WallSpriteTile->GetWidth() << FRACBITS) - 1;
for (i = x1; i < x2; i++)
{
walltexcoords.UPos[i] = right - walltexcoords.UPos[i];
}
}
// Prepare lighting
calclighting = false;
usecolormap = basecolormap;
rereadcolormap = true;
// Decals that are added to the scene must fade to black.
if (decal->RenderStyle == LegacyRenderStyles[STYLE_Add] && usecolormap->Fade != 0)
{
usecolormap = GetSpecialLights(usecolormap->Color, 0, usecolormap->Desaturate);
rereadcolormap = false;
}
light = lightleft + (x1 - savecoord.sx1) * lightstep;
cameraLight = CameraLight::Instance();
// Draw it
bool sprflipvert;
if (decal->RenderFlags & RF_YFLIP)
{
sprflipvert = true;
yscale = -yscale;
texturemid -= WallSpriteTile->GetHeight();
}
else
{
sprflipvert = false;
}
maskedScaleY = float(1 / yscale);
do
{
int x = x1;
SpriteDrawerArgs drawerargs;
if (cameraLight->FixedLightLevel() >= 0)
drawerargs.SetLight((r_fullbrightignoresectorcolor) ? &FullNormalLight : usecolormap, 0, cameraLight->FixedLightLevelShade());
else if (cameraLight->FixedColormap() != NULL)
drawerargs.SetLight(cameraLight->FixedColormap(), 0, 0);
else if (!foggy && (decal->RenderFlags & RF_FULLBRIGHT))
drawerargs.SetLight((r_fullbrightignoresectorcolor) ? &FullNormalLight : usecolormap, 0, 0);
else
calclighting = true;
bool visible = drawerargs.SetStyle(thread->Viewport.get(), decal->RenderStyle, (float)decal->Alpha, decal->Translation, decal->AlphaColor, basecolormap);
// R_SetPatchStyle can modify basecolormap.
if (rereadcolormap)
{
usecolormap = basecolormap;
}
if (visible)
{
thread->PrepareTexture(WallSpriteTile, decal->RenderStyle);
while (x < x2)
{
if (calclighting)
{ // calculate lighting
drawerargs.SetLight(usecolormap, light, wallshade);
}
DrawColumn(thread, drawerargs, x, WallSpriteTile, walltexcoords, texturemid, maskedScaleY, sprflipvert, mfloorclip, mceilingclip, decal->RenderStyle);
light += lightstep;
x++;
}
}
// If this sprite is RF_CLIPFULL on a two-sided line, needrepeat will
// be set 1 if we need to draw on the lower wall. In all other cases,
// needrepeat will be 0, and the while will fail.
mceilingclip = thread->OpaquePass->floorclip;
mfloorclip = wallbottom;
} while (needrepeat--);
}
void RenderPolySprite::Render(PolyRenderThread *thread, AActor *thing, subsector_t *sub, uint32_t stencilValue, float t1, float t2)
{
if (r_modelscene)
{
const auto &viewpoint = PolyRenderer::Instance()->Viewpoint;
int spritenum = thing->sprite;
bool isPicnumOverride = thing->picnum.isValid();
FSpriteModelFrame *modelframe = isPicnumOverride ? nullptr : FindModelFrame(thing->GetClass(), spritenum, thing->frame, !!(thing->flags & MF_DROPPED));
if (modelframe && (thing->Pos() - viewpoint.Pos).LengthSquared() < model_distance_cull)
{
DVector3 pos = thing->InterpolatedPosition(viewpoint.TicFrac);
PolyRenderModel(thread, PolyRenderer::Instance()->Scene.CurrentViewpoint->WorldToClip, stencilValue, (float)pos.X, (float)pos.Y, (float)pos.Z, modelframe, thing);
return;
}
}
DVector2 line[2];
if (!GetLine(thing, line[0], line[1]))
return;
const auto &viewpoint = PolyRenderer::Instance()->Viewpoint;
DVector3 thingpos = thing->InterpolatedPosition(viewpoint.TicFrac);
double posZ = thingpos.Z;
uint32_t spritetype = (thing->renderflags & RF_SPRITETYPEMASK);
if (spritetype == RF_FACESPRITE)
posZ -= thing->Floorclip;
if (thing->flags2 & MF2_FLOATBOB)
posZ += thing->GetBobOffset(viewpoint.TicFrac);
bool flipTextureX = false;
FTexture *tex = GetSpriteTexture(thing, flipTextureX);
if (tex == nullptr || tex->UseType == ETextureType::Null)
return;
double thingyscalemul = thing->Scale.Y / tex->Scale.Y;
double spriteHeight = thingyscalemul * tex->GetHeight();
posZ -= (tex->GetHeight() - tex->GetTopOffsetPo()) * thingyscalemul;
posZ = PerformSpriteClipAdjustment(thing, thingpos, spriteHeight, posZ);
//double depth = 1.0;
//visstyle_t visstyle = GetSpriteVisStyle(thing, depth);
// Rumor has it that AlterWeaponSprite needs to be called with visstyle passed in somewhere around here..
//R_SetColorMapLight(visstyle.BaseColormap, 0, visstyle.ColormapNum << FRACBITS);
TriVertex *vertices = thread->FrameMemory->AllocMemory<TriVertex>(4);
bool foggy = false;
int actualextralight = foggy ? 0 : viewpoint.extralight << 4;
std::pair<float, float> offsets[4] =
{
{ t1, 1.0f },
{ t2, 1.0f },
{ t2, 0.0f },
{ t1, 0.0f },
};
DVector2 points[2] =
{
line[0] * (1.0 - t1) + line[1] * t1,
line[0] * (1.0 - t2) + line[1] * t2
};
for (int i = 0; i < 4; i++)
{
auto &p = (i == 0 || i == 3) ? points[0] : points[1];
vertices[i].x = (float)p.X;
vertices[i].y = (float)p.Y;
vertices[i].z = (float)(posZ + spriteHeight * offsets[i].second);
vertices[i].w = 1.0f;
vertices[i].u = (float)(offsets[i].first * tex->Scale.X);
vertices[i].v = (float)((1.0f - offsets[i].second) * tex->Scale.Y);
if (flipTextureX)
vertices[i].u = 1.0f - vertices[i].u;
}
bool fullbrightSprite = ((thing->renderflags & RF_FULLBRIGHT) || (thing->flags5 & MF5_BRIGHT));
int lightlevel = fullbrightSprite ? 255 : thing->Sector->lightlevel + actualextralight;
PolyDrawArgs args;
SetDynlight(thing, args);
args.SetLight(GetColorTable(sub->sector->Colormap, sub->sector->SpecialColors[sector_t::sprites], true), lightlevel, PolyRenderer::Instance()->Light.SpriteGlobVis(foggy), fullbrightSprite);
args.SetStencilTestValue(stencilValue);
if ((thing->renderflags & RF_ZDOOMTRANS) && r_UseVanillaTransparency)
args.SetStyle(LegacyRenderStyles[STYLE_Normal], 1.0f, thing->fillcolor, thing->Translation, tex, fullbrightSprite);
else
args.SetStyle(thing->RenderStyle, thing->Alpha, thing->fillcolor, thing->Translation, tex, fullbrightSprite);
args.SetDepthTest(true);
args.SetWriteDepth(false);
args.SetWriteStencil(false);
PolyTriangleDrawer::DrawArray(thread->DrawQueue, args, vertices, 4, PolyDrawMode::TriangleFan);
}
void RenderPolyWallSprite::Render(const TriMatrix &worldToClip, AActor *thing, subsector_t *sub, uint32_t subsectorDepth)
{
if (RenderPolySprite::IsThingCulled(thing))
return;
DVector3 pos = thing->InterpolatedPosition(r_TicFracF);
pos.Z += thing->GetBobOffset(r_TicFracF);
bool flipTextureX = false;
FTexture *tex = RenderPolySprite::GetSpriteTexture(thing, flipTextureX);
if (tex == nullptr)
return;
DVector2 spriteScale = thing->Scale;
double thingxscalemul = spriteScale.X / tex->Scale.X;
double thingyscalemul = spriteScale.Y / tex->Scale.Y;
double spriteHeight = thingyscalemul * tex->GetHeight();
DAngle ang = thing->Angles.Yaw + 90;
double angcos = ang.Cos();
double angsin = ang.Sin();
// Determine left and right edges of sprite. The sprite's angle is its normal,
// so the edges are 90 degrees each side of it.
double x2 = tex->GetScaledWidth() * spriteScale.X;
double x1 = tex->GetScaledLeftOffset() * spriteScale.X;
DVector2 left, right;
left.X = pos.X - x1 * angcos;
left.Y = pos.Y - x1 * angsin;
right.X = left.X + x2 * angcos;
right.Y = right.Y + x2 * angsin;
//int scaled_to = tex->GetScaledTopOffset();
//int scaled_bo = scaled_to - tex->GetScaledHeight();
//gzt = pos.Z + scale.Y * scaled_to;
//gzb = pos.Z + scale.Y * scaled_bo;
DVector2 points[2] = { left, right };
TriVertex *vertices = PolyVertexBuffer::GetVertices(4);
if (!vertices)
return;
bool foggy = false;
int actualextralight = foggy ? 0 : extralight << 4;
std::pair<float, float> offsets[4] =
{
{ 0.0f, 1.0f },
{ 1.0f, 1.0f },
{ 1.0f, 0.0f },
{ 0.0f, 0.0f },
};
for (int i = 0; i < 4; i++)
{
auto &p = (i == 0 || i == 3) ? points[0] : points[1];
vertices[i].x = (float)p.X;
vertices[i].y = (float)p.Y;
vertices[i].z = (float)(pos.Z + spriteHeight * offsets[i].second);
vertices[i].w = 1.0f;
vertices[i].varying[0] = (float)(offsets[i].first * tex->Scale.X);
vertices[i].varying[1] = (float)((1.0f - offsets[i].second) * tex->Scale.Y);
if (flipTextureX)
vertices[i].varying[0] = 1.0f - vertices[i].varying[0];
}
bool fullbrightSprite = ((thing->renderflags & RF_FULLBRIGHT) || (thing->flags5 & MF5_BRIGHT));
TriUniforms uniforms;
if (fullbrightSprite || fixedlightlev >= 0 || fixedcolormap)
{
uniforms.light = 256;
uniforms.flags = TriUniforms::fixed_light;
}
else
{
uniforms.light = (uint32_t)((thing->Sector->lightlevel + actualextralight) / 255.0f * 256.0f);
uniforms.flags = 0;
}
uniforms.subsectorDepth = subsectorDepth;
PolyDrawArgs args;
args.uniforms = uniforms;
args.objectToClip = &worldToClip;
args.vinput = vertices;
args.vcount = 4;
args.mode = TriangleDrawMode::Fan;
args.ccw = true;
args.stenciltestvalue = 0;
args.stencilwritevalue = 1;
args.SetTexture(tex);
args.SetColormap(sub->sector->ColorMap);
PolyTriangleDrawer::draw(args, TriDrawVariant::DrawSubsector, TriBlendMode::AlphaBlend);
}