void FDrawInfo::ClearFloodStencil(wallseg * ws)
{
int recursion = GLPortal::GetRecursion();
glStencilOp(GL_KEEP,GL_KEEP,GL_DECR);
gl_RenderState.EnableTexture(false);
{
// Use revertible color mask, to avoid stomping on anaglyph 3D state
ScopedColorMask colorMask(0, 0, 0, 0); // glColorMask(0,0,0,0); // don't write to the graphics buffer
gl_RenderState.ResetColor();
gl_RenderState.Apply();
FQuadDrawer qd;
qd.Set(0, ws->x1, ws->z1, ws->y1, 0, 0);
qd.Set(1, ws->x1, ws->z2, ws->y1, 0, 0);
qd.Set(2, ws->x2, ws->z2, ws->y2, 0, 0);
qd.Set(3, ws->x2, ws->z1, ws->y2, 0, 0);
qd.Render(GL_TRIANGLE_FAN);
// restore old stencil op.
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glStencilFunc(GL_EQUAL, recursion, ~0);
gl_RenderState.EnableTexture(true);
} // glColorMask(1, 1, 1, 1);
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
}
void FDrawInfo::SetupFloodStencil(wallseg * ws)
{
int recursion = GLPortal::GetRecursion();
// Create stencil
glStencilFunc(GL_EQUAL, recursion, ~0); // create stencil
glStencilOp(GL_KEEP, GL_KEEP, GL_INCR); // increment stencil of valid pixels
{
// Use revertible color mask, to avoid stomping on anaglyph 3D state
ScopedColorMask colorMask(0, 0, 0, 0); // glColorMask(0, 0, 0, 0); // don't write to the graphics buffer
gl_RenderState.EnableTexture(false);
gl_RenderState.ResetColor();
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
gl_RenderState.Apply();
FQuadDrawer qd;
qd.Set(0, ws->x1, ws->z1, ws->y1, 0, 0);
qd.Set(1, ws->x1, ws->z2, ws->y1, 0, 0);
qd.Set(2, ws->x2, ws->z2, ws->y2, 0, 0);
qd.Set(3, ws->x2, ws->z1, ws->y2, 0, 0);
qd.Render(GL_TRIANGLE_FAN);
glStencilFunc(GL_EQUAL, recursion + 1, ~0); // draw sky into stencil
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); // this stage doesn't modify the stencil
} // glColorMask(1, 1, 1, 1); // don't write to the graphics buffer
gl_RenderState.EnableTexture(true);
glDisable(GL_DEPTH_TEST);
glDepthMask(false);
}
void GLWall::RenderWall(int textured)
{
gl_RenderState.Apply();
gl_RenderState.ApplyLightIndex(dynlightindex);
if (gl.buffermethod != BM_DEFERRED)
{
MakeVertices(!(textured&RWF_NOSPLIT));
}
else if (vertcount == 0)
{
// This should never happen but in case it actually does, use the quad drawer as fallback (without edge splitting.)
// This way it at least gets drawn.
FQuadDrawer qd;
qd.Set(0, glseg.x1, zbottom[0], glseg.y1, tcs[LOLFT].u, tcs[LOLFT].v);
qd.Set(1, glseg.x1, ztop[0], glseg.y1, tcs[UPLFT].u, tcs[UPLFT].v);
qd.Set(2, glseg.x2, ztop[1], glseg.y2, tcs[UPRGT].u, tcs[UPRGT].v);
qd.Set(3, glseg.x2, zbottom[1], glseg.y2, tcs[LORGT].u, tcs[LORGT].v);
qd.Render(GL_TRIANGLE_FAN);
vertexcount += 4;
return;
}
GLRenderer->mVBO->RenderArray(GL_TRIANGLE_FAN, vertindex, vertcount);
vertexcount += vertcount;
}
//==========================================================================
//
// Draw the plane segment into the gap
//
//==========================================================================
void FDrawInfo::DrawFloodedPlane(wallseg * ws, float planez, sector_t * sec, bool ceiling)
{
GLSectorPlane plane;
int lightlevel;
FColormap Colormap;
FMaterial * gltexture;
plane.GetFromSector(sec, ceiling);
gltexture=FMaterial::ValidateTexture(plane.texture, false, true);
if (!gltexture) return;
if (gl_fixedcolormap)
{
Colormap.Clear();
lightlevel=255;
}
else
{
Colormap=sec->ColorMap;
if (gltexture->tex->isFullbright())
{
Colormap.LightColor.r = Colormap.LightColor.g = Colormap.LightColor.b = 0xff;
lightlevel=255;
}
else lightlevel=abs(ceiling? sec->GetCeilingLight() : sec->GetFloorLight());
}
int rel = getExtraLight();
gl_SetColor(lightlevel, rel, Colormap, 1.0f);
gl_SetFog(lightlevel, rel, &Colormap, false);
gl_RenderState.SetMaterial(gltexture, CLAMP_NONE, 0, -1, false);
float fviewx = ViewPos.X;
float fviewy = ViewPos.Y;
float fviewz = ViewPos.Z;
gl_SetPlaneTextureRotation(&plane, gltexture);
gl_RenderState.Apply();
float prj_fac1 = (planez-fviewz)/(ws->z1-fviewz);
float prj_fac2 = (planez-fviewz)/(ws->z2-fviewz);
float px1 = fviewx + prj_fac1 * (ws->x1-fviewx);
float py1 = fviewy + prj_fac1 * (ws->y1-fviewy);
float px2 = fviewx + prj_fac2 * (ws->x1-fviewx);
float py2 = fviewy + prj_fac2 * (ws->y1-fviewy);
float px3 = fviewx + prj_fac2 * (ws->x2-fviewx);
float py3 = fviewy + prj_fac2 * (ws->y2-fviewy);
float px4 = fviewx + prj_fac1 * (ws->x2-fviewx);
float py4 = fviewy + prj_fac1 * (ws->y2-fviewy);
FQuadDrawer qd;
qd.Set(0, px1, planez, py1, px1 / 64, -py1 / 64);
qd.Set(1, px2, planez, py2, px2 / 64, -py2 / 64);
qd.Set(2, px3, planez, py3, px3 / 64, -py3 / 64);
qd.Set(3, px4, planez, py4, px4 / 64, -py4 / 64);
qd.Render(GL_TRIANGLE_FAN);
gl_RenderState.EnableTextureMatrix(false);
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::DrawDecal(DBaseDecal *decal)
{
line_t * line=seg->linedef;
side_t * side=seg->sidedef;
int i;
float zpos;
int light;
int rel;
float a;
bool flipx, flipy;
DecalVertex dv[4];
FTextureID decalTile;
if (decal->RenderFlags & RF_INVISIBLE) return;
if (type==RENDERWALL_FFBLOCK && gltexture->isMasked()) return; // No decals on 3D floors with transparent textures.
//if (decal->sprite != 0xffff)
{
decalTile = decal->PicNum;
flipx = !!(decal->RenderFlags & RF_XFLIP);
flipy = !!(decal->RenderFlags & RF_YFLIP);
}
/*
else
{
decalTile = SpriteFrames[sprites[decal->sprite].spriteframes + decal->frame].lump[0];
flipx = SpriteFrames[sprites[decal->sprite].spriteframes + decal->frame].flip & 1;
}
*/
FTexture *texture = TexMan[decalTile];
if (texture == NULL) return;
FMaterial *tex;
tex = FMaterial::ValidateTexture(texture, true);
// the sectors are only used for their texture origin coordinates
// so we don't need the fake sectors for deep water etc.
// As this is a completely split wall fragment no further splits are
// necessary for the decal.
sector_t *frontsector;
// for 3d-floor segments use the model sector as reference
if ((decal->RenderFlags&RF_CLIPMASK)==RF_CLIPMID) frontsector=decal->Sector;
else frontsector=seg->frontsector;
switch (decal->RenderFlags & RF_RELMASK)
{
default:
// No valid decal can have this type. If one is encountered anyway
// it is in some way invalid so skip it.
return;
//zpos = decal->z;
//break;
case RF_RELUPPER:
if (type!=RENDERWALL_TOP) return;
if (line->flags & ML_DONTPEGTOP)
{
zpos = decal->Z + frontsector->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + seg->backsector->GetPlaneTexZ(sector_t::ceiling);
}
break;
case RF_RELLOWER:
if (type!=RENDERWALL_BOTTOM) return;
if (line->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + frontsector->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + seg->backsector->GetPlaneTexZ(sector_t::floor);
}
break;
case RF_RELMID:
if (type==RENDERWALL_TOP || type==RENDERWALL_BOTTOM) return;
if (line->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + frontsector->GetPlaneTexZ(sector_t::floor);
}
else
{
zpos = decal->Z + frontsector->GetPlaneTexZ(sector_t::ceiling);
}
}
if (decal->RenderFlags & RF_FULLBRIGHT)
{
light = 255;
rel = 0;
}
else
{
light = lightlevel;
rel = rellight + getExtraLight();
}
FColormap p = Colormap;
if (glset.nocoloredspritelighting)
{
p.Decolorize();
}
a = decal->Alpha;
// now clip the decal to the actual polygon
float decalwidth = tex->TextureWidth() * decal->ScaleX;
float decalheight= tex->TextureHeight() * decal->ScaleY;
float decallefto = tex->GetLeftOffset() * decal->ScaleX;
float decaltopo = tex->GetTopOffset() * decal->ScaleY;
float leftedge = glseg.fracleft * side->TexelLength;
float linelength = glseg.fracright * side->TexelLength - leftedge;
// texel index of the decal's left edge
float decalpixpos = (float)side->TexelLength * decal->LeftDistance - (flipx? decalwidth-decallefto : decallefto) - leftedge;
float left,right;
float lefttex,righttex;
// decal is off the left edge
if (decalpixpos < 0)
{
left = 0;
lefttex = -decalpixpos;
}
else
{
left = decalpixpos;
lefttex = 0;
}
// decal is off the right edge
if (decalpixpos + decalwidth > linelength)
{
right = linelength;
righttex = right - decalpixpos;
}
else
{
right = decalpixpos + decalwidth;
righttex = decalwidth;
}
if (right<=left) return; // nothing to draw
// one texture unit on the wall as vector
float vx=(glseg.x2-glseg.x1)/linelength;
float vy=(glseg.y2-glseg.y1)/linelength;
dv[1].x=dv[0].x=glseg.x1+vx*left;
dv[1].y=dv[0].y=glseg.y1+vy*left;
dv[3].x=dv[2].x=glseg.x1+vx*right;
dv[3].y=dv[2].y=glseg.y1+vy*right;
zpos+= (flipy? decalheight-decaltopo : decaltopo);
dv[1].z=dv[2].z = zpos;
dv[0].z=dv[3].z = dv[1].z - decalheight;
dv[1].v=dv[2].v = tex->GetVT();
dv[1].u=dv[0].u = tex->GetU(lefttex / decal->ScaleX);
dv[3].u=dv[2].u = tex->GetU(righttex / decal->ScaleX);
dv[0].v=dv[3].v = tex->GetVB();
// now clip to the top plane
float vzt=(ztop[1]-ztop[0])/linelength;
float topleft=this->ztop[0]+vzt*left;
float topright=this->ztop[0]+vzt*right;
// completely below the wall
if (topleft<dv[0].z && topright<dv[3].z)
return;
if (topleft<dv[1].z || topright<dv[2].z)
{
// decal has to be clipped at the top
// let texture clamping handle all extreme cases
dv[1].v=(dv[1].z-topleft)/(dv[1].z-dv[0].z)*dv[0].v;
dv[2].v=(dv[2].z-topright)/(dv[2].z-dv[3].z)*dv[3].v;
dv[1].z=topleft;
dv[2].z=topright;
}
// now clip to the bottom plane
float vzb=(zbottom[1]-zbottom[0])/linelength;
float bottomleft=this->zbottom[0]+vzb*left;
float bottomright=this->zbottom[0]+vzb*right;
// completely above the wall
if (bottomleft>dv[1].z && bottomright>dv[2].z)
return;
if (bottomleft>dv[0].z || bottomright>dv[3].z)
{
// decal has to be clipped at the bottom
// let texture clamping handle all extreme cases
dv[0].v=(dv[1].z-bottomleft)/(dv[1].z-dv[0].z)*(dv[0].v-dv[1].v) + dv[1].v;
dv[3].v=(dv[2].z-bottomright)/(dv[2].z-dv[3].z)*(dv[3].v-dv[2].v) + dv[2].v;
dv[0].z=bottomleft;
dv[3].z=bottomright;
}
if (flipx)
{
float ur = tex->GetUR();
for(i=0;i<4;i++) dv[i].u=ur-dv[i].u;
}
if (flipy)
{
float vb = tex->GetVB();
for(i=0;i<4;i++) dv[i].v=vb-dv[i].v;
}
// calculate dynamic light effect.
if (gl_lights && GLRenderer->mLightCount && !gl_fixedcolormap && gl_light_sprites)
{
// Note: This should be replaced with proper shader based lighting.
double x, y;
decal->GetXY(seg->sidedef, x, y);
gl_SetDynSpriteLight(NULL, x, y, zpos, sub);
}
// alpha color only has an effect when using an alpha texture.
if (decal->RenderStyle.Flags & STYLEF_RedIsAlpha)
{
gl_RenderState.SetObjectColor(decal->AlphaColor|0xff000000);
}
gl_SetRenderStyle(decal->RenderStyle, false, false);
gl_RenderState.SetMaterial(tex, CLAMP_XY, decal->Translation, 0, !!(decal->RenderStyle.Flags & STYLEF_RedIsAlpha));
// If srcalpha is one it looks better with a higher alpha threshold
if (decal->RenderStyle.SrcAlpha == STYLEALPHA_One) gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_sprite_threshold);
else gl_RenderState.AlphaFunc(GL_GREATER, 0.f);
gl_SetColor(light, rel, p, a);
// for additively drawn decals we must temporarily set the fog color to black.
PalEntry fc = gl_RenderState.GetFogColor();
if (decal->RenderStyle.BlendOp == STYLEOP_Add && decal->RenderStyle.DestAlpha == STYLEALPHA_One)
{
gl_RenderState.SetFog(0,-1);
}
FQuadDrawer qd;
for (i = 0; i < 4; i++)
{
qd.Set(i, dv[i].x, dv[i].z, dv[i].y, dv[i].u, dv[i].v);
}
if (lightlist == NULL)
{
gl_RenderState.Apply();
qd.Render(GL_TRIANGLE_FAN);
}
else
{
for (unsigned k = 0; k < lightlist->Size(); k++)
{
secplane_t &lowplane = k == (*lightlist).Size() - 1 ? bottomplane : (*lightlist)[k + 1].plane;
float low1 = lowplane.ZatPoint(dv[1].x, dv[1].y);
float low2 = lowplane.ZatPoint(dv[2].x, dv[2].y);
if (low1 < dv[1].z || low2 < dv[2].z)
{
int thisll = (*lightlist)[k].caster != NULL ? gl_ClampLight(*(*lightlist)[k].p_lightlevel) : lightlevel;
FColormap thiscm;
thiscm.FadeColor = Colormap.FadeColor;
thiscm.CopyFrom3DLight(&(*lightlist)[k]);
gl_SetColor(thisll, rel, thiscm, a);
if (glset.nocoloredspritelighting) thiscm.Decolorize();
gl_SetFog(thisll, rel, &thiscm, RenderStyle == STYLE_Add);
gl_RenderState.SetSplitPlanes((*lightlist)[k].plane, lowplane);
gl_RenderState.Apply();
qd.Render(GL_TRIANGLE_FAN);
}
if (low1 <= dv[0].z && low2 <= dv[3].z) break;
}
}
rendered_decals++;
gl_RenderState.SetTextureMode(TM_MODULATE);
gl_RenderState.SetObjectColor(0xffffffff);
gl_RenderState.SetFog(fc,-1);
gl_RenderState.SetDynLight(0,0,0);
}
void GLWall::RenderWall(int textured)
{
gl_RenderState.Apply();
gl_RenderState.ApplyLightIndex(dynlightindex);
#ifdef NO_VBO
bool nosplit = !!(textured&RWF_NOSPLIT);
bool split = (gl_seamless && !nosplit && seg->sidedef != NULL && !(seg->sidedef->Flags & WALLF_POLYOBJ) && !(flags & GLWF_NOSPLIT));
#if 1 // A bit quicker due to batching, still not very fast..
glBegin(GL_TRIANGLE_FAN);
// lower left corner
if (textured&1) glTexCoord2f(tcs[0].u,tcs[0].v);
glVertex3f(glseg.x1,zbottom[0],glseg.y1);
//if (split && glseg.fracleft==0) SplitLeftEdge(tcs);
// upper left corner
if (textured&1) glTexCoord2f(tcs[1].u,tcs[1].v);
glVertex3f(glseg.x1,ztop[0],glseg.y1);
//if (split && !(flags & GLWF_NOSPLITUPPER)) SplitUpperEdge(tcs);
// color for right side
//if (color2) glColor4fv(color2);
// upper right corner
if (textured&1) glTexCoord2f(tcs[2].u,tcs[2].v);
glVertex3f(glseg.x2,ztop[1],glseg.y2);
//if (split && glseg.fracright==1) SplitRightEdge(tcs);
// lower right corner
if (textured&1) glTexCoord2f(tcs[3].u,tcs[3].v);
glVertex3f(glseg.x2,zbottom[1],glseg.y2);
//if (split && !(flags & GLWF_NOSPLITLOWER)) SplitLowerEdge(tcs);
glEnd();
vertexcount+=4;
#else
static FFlatVertex vtx[100]; // Yes this is static. It's only used once, and I think it's faster as the address doesn't keep changing
FFlatVertex *ptr = &vtx[0];
ptr->Set(glseg.x1, zbottom[0], glseg.y1, tcs[LOLFT].u, tcs[LOLFT].v);
ptr++;
if (split && glseg.fracleft == 0) SplitLeftEdge(ptr);
ptr->Set(glseg.x1, ztop[0], glseg.y1, tcs[UPLFT].u, tcs[UPLFT].v);
ptr++;
if (split && !(flags & GLWF_NOSPLITUPPER)) SplitUpperEdge(ptr);
ptr->Set(glseg.x2, ztop[1], glseg.y2, tcs[UPRGT].u, tcs[UPRGT].v);
ptr++;
if (split && glseg.fracright == 1) SplitRightEdge(ptr);
ptr->Set(glseg.x2, zbottom[1], glseg.y2, tcs[LORGT].u, tcs[LORGT].v);
ptr++;
if (split && !(flags & GLWF_NOSPLITLOWER)) SplitLowerEdge(ptr);
// We can workout how many from the difference in pointers
vertcount = (ptr - &vtx[0]);
glTexCoordPointer(2,GL_FLOAT, sizeof(FFlatVertex),&vtx[0].u);
glVertexPointer (3,GL_FLOAT, sizeof(FFlatVertex),&vtx[0].x);
glEnableClientState (GL_VERTEX_ARRAY);
glEnableClientState (GL_TEXTURE_COORD_ARRAY);
glDisableClientState (GL_COLOR_ARRAY);
glBindBuffer (GL_ARRAY_BUFFER, 0); // NO VBO
glDrawArrays (GL_TRIANGLE_FAN, 0, vertcount);
vertexcount += vertcount;
#endif
#else
if (gl.buffermethod != BM_DEFERRED)
{
MakeVertices(!!(textured&RWF_NOSPLIT));
}
else if (vertcount == 0)
{
// This should never happen but in case it actually does, use the quad drawer as fallback (without edge splitting.)
// This way it at least gets drawn.
FQuadDrawer qd;
qd.Set(0, glseg.x1, zbottom[0], glseg.y1, tcs[LOLFT].u, tcs[LOLFT].v);
qd.Set(1, glseg.x1, ztop[0], glseg.y1, tcs[UPLFT].u, tcs[UPLFT].v);
qd.Set(2, glseg.x2, ztop[1], glseg.y2, tcs[UPRGT].u, tcs[UPRGT].v);
qd.Set(3, glseg.x2, zbottom[1], glseg.y2, tcs[LORGT].u, tcs[LORGT].v);
qd.Render(GL_TRIANGLE_FAN);
vertexcount += 4;
return;
}
GLRenderer->mVBO->RenderArray(GL_TRIANGLE_FAN, vertindex, vertcount);
vertexcount += vertcount;
#endif
}
void FGLRenderer::DrawPSprite (player_t * player,DPSprite *psp, float sx, float sy, bool hudModelStep, int OverrideShader, bool alphatexture)
{
float fU1,fV1;
float fU2,fV2;
float tx;
float x1,y1,x2,y2;
float scale;
float scalex;
float ftexturemid;
// [BB] In the HUD model step we just render the model and break out.
if ( hudModelStep )
{
gl_RenderHUDModel(psp, sx, sy);
return;
}
// decide which patch to use
bool mirror;
FTextureID lump = gl_GetSpriteFrame(psp->GetSprite(), psp->GetFrame(), 0, 0, &mirror);
if (!lump.isValid()) return;
FMaterial * tex = FMaterial::ValidateTexture(lump, true, false);
if (!tex) return;
gl_RenderState.SetMaterial(tex, CLAMP_XY_NOMIP, 0, OverrideShader, alphatexture);
float vw = (float)viewwidth;
float vh = (float)viewheight;
FloatRect r;
tex->GetSpriteRect(&r);
// calculate edges of the shape
scalex = (320.0f / (240.0f * WidescreenRatio)) * vw / 320;
tx = sx - (160 - r.left);
x1 = tx * scalex + vw/2;
if (x1 > vw) return; // off the right side
x1 += viewwindowx;
tx += r.width;
x2 = tx * scalex + vw / 2;
if (x2 < 0) return; // off the left side
x2 += viewwindowx;
// killough 12/98: fix psprite positioning problem
ftexturemid = 100.f - sy - r.top;
AWeapon * wi=player->ReadyWeapon;
if (wi && wi->YAdjust != 0)
{
float fYAd = wi->YAdjust;
if (screenblocks >= 11)
{
ftexturemid -= fYAd;
}
else if (!st_scale)
{
ftexturemid -= StatusBar->GetDisplacement () * fYAd;
}
}
scale = (SCREENHEIGHT*vw) / (SCREENWIDTH * 200.0f);
y1 = viewwindowy + vh / 2 - (ftexturemid * scale);
y2 = y1 + (r.height * scale) + 1;
if (!(mirror) != !(psp->Flags & PSPF_FLIP))
{
fU2 = tex->GetSpriteUL();
fV1 = tex->GetSpriteVT();
fU1 = tex->GetSpriteUR();
fV2 = tex->GetSpriteVB();
}
else
{
fU1 = tex->GetSpriteUL();
fV1 = tex->GetSpriteVT();
fU2 = tex->GetSpriteUR();
fV2 = tex->GetSpriteVB();
}
if (tex->GetTransparent() || OverrideShader != -1)
{
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
}
gl_RenderState.Apply();
FQuadDrawer qd;
qd.Set(0, x1, y1, 0, fU1, fV1);
qd.Set(1, x1, y2, 0, fU1, fV2);
qd.Set(2, x2, y1, 0, fU2, fV1);
qd.Set(3, x2, y2, 0, fU2, fV2);
qd.Render(GL_TRIANGLE_STRIP);
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.5f);
}