void gl_SetPlaneTextureRotation(const GLSectorPlane * secplane, FMaterial * gltexture)
{
// only manipulate the texture matrix if needed.
if (secplane->xoffs != 0 || secplane->yoffs != 0 ||
secplane->xscale != FRACUNIT || secplane->yscale != FRACUNIT ||
secplane->angle != 0 ||
gltexture->TextureWidth() != 64 ||
gltexture->TextureHeight() != 64)
{
float uoffs = FIXED2FLOAT(secplane->xoffs) / gltexture->TextureWidth();
float voffs = FIXED2FLOAT(secplane->yoffs) / gltexture->TextureHeight();
float xscale1=FIXED2FLOAT(secplane->xscale);
float yscale1=FIXED2FLOAT(secplane->yscale);
if (gltexture->tex->bHasCanvas)
{
yscale1 = 0 - yscale1;
}
float angle=-ANGLE_TO_FLOAT(secplane->angle);
float xscale2=64.f/gltexture->TextureWidth();
float yscale2=64.f/gltexture->TextureHeight();
gl_RenderState.mTextureMatrix.loadIdentity();
gl_RenderState.mTextureMatrix.scale(xscale1 ,yscale1,1.0f);
gl_RenderState.mTextureMatrix.translate(uoffs,voffs,0.0f);
gl_RenderState.mTextureMatrix.scale(xscale2 ,yscale2,1.0f);
gl_RenderState.mTextureMatrix.rotate(angle,0.0f,0.0f,1.0f);
gl_RenderState.EnableTextureMatrix(true);
}
}
// construct a new ViewShifter, to temporarily shift camera viewpoint
ViewShifter(EyeView eyeView, player_t * player, FGLRenderer& renderer_param) {
renderer = &renderer_param;
saved_viewx = viewx;
saved_viewy = viewy;
float xf = FIXED2FLOAT(viewx);
float yf = FIXED2FLOAT(viewy);
float yaw = DEG2RAD( ANGLE_TO_FLOAT(viewangle) );
float eyeShift = vr_ipd / 2.0;
if (eyeView == EYE_VIEW_LEFT)
eyeShift = -eyeShift;
float vh = 41.0;
if (player != NULL)
vh = FIXED2FLOAT(player->mo->ViewHeight);
float mapunits_per_meter = vh/(0.95 * vr_player_height_meters);
float eyeShift_mapunits = eyeShift * mapunits_per_meter;
xf += sin(yaw) * eyeShift_mapunits;
yf -= cos(yaw) * eyeShift_mapunits;
// Printf("eyeShift_mapunits (ViewShifter) = %.1f\n", eyeShift_mapunits);
viewx = FLOAT2FIXED(xf);
viewy = FLOAT2FIXED(yf);
renderer->SetCameraPos(viewx, viewy, viewz, viewangle);
renderer->SetViewMatrix(false, false);
}
void Plane::Set(secplane_t &plane)
{
float a, b, c, d;
a = FIXED2FLOAT(plane.a);
b = FIXED2FLOAT(plane.b);
c = FIXED2FLOAT(plane.c);
d = FIXED2FLOAT(plane.d);
m_normal.Set(a, c, b);
//m_normal.Normalize(); the vector is already normalized
m_d = d;
}
void gl_RenderHUDModel(pspdef_t *psp, fixed_t ofsx, fixed_t ofsy, int cm)
{
AActor * playermo=players[consoleplayer].camera;
FSpriteModelFrame *smf = gl_FindModelFrame(playermo->player->ReadyWeapon->GetClass(), psp->state->sprite, psp->state->GetFrame());
// [BB] No model found for this sprite, so we can't render anything.
if ( smf == NULL )
return;
// [BB] The model has to be drawn independtly from the position of the player,
// so we have to reset the GL_MODELVIEW matrix.
gl.MatrixMode(GL_MODELVIEW);
gl.PushMatrix();
gl.LoadIdentity();
gl.DepthFunc(GL_LEQUAL);
// [BB] In case the model should be rendered translucent, do back face culling.
// This solves a few of the problems caused by the lack of depth sorting.
// TO-DO: Implement proper depth sorting.
if (!( playermo->RenderStyle == LegacyRenderStyles[STYLE_Normal] ))
{
gl.Enable(GL_CULL_FACE);
glFrontFace(GL_CCW);
}
// Scaling and model space offset.
gl.Scalef(
smf->xscale,
smf->zscale, // y scale for a sprite means height, i.e. z in the world!
smf->yscale);
// [BB] Apply zoffset here, needs to be scaled by 1 / smf->zscale, so that zoffset doesn't depend on the z-scaling.
gl.Translatef(0., smf->zoffset / smf->zscale, 0.);
// [BB] Weapon bob, very similar to the normal Doom weapon bob.
gl.Rotatef(FIXED2FLOAT(ofsx)/4, 0, 1, 0);
gl.Rotatef(-FIXED2FLOAT(ofsy-WEAPONTOP)/4, 1, 0, 0);
// [BB] For some reason the jDoom models need to be rotated.
gl.Rotatef(90., 0, 1, 0);
gl_RenderFrameModels( smf, psp->state, psp->tics, playermo->player->ReadyWeapon->GetClass(), cm, NULL, NULL, 0 );
gl.MatrixMode(GL_MODELVIEW);
gl.PopMatrix();
gl.DepthFunc(GL_LESS);
if (!( playermo->RenderStyle == LegacyRenderStyles[STYLE_Normal] ))
gl.Disable(GL_CULL_FACE);
}
void GLPlaneMirrorPortal::DrawContents()
{
if (renderdepth>r_mirror_recursions)
{
ClearScreen();
return;
}
int old_pm=PlaneMirrorMode;
fixed_t planez = origin->ZatPoint(viewx, viewy);
viewz = 2*planez - viewz;
GLRenderer->mViewActor = NULL;
PlaneMirrorMode = ksgn(origin->c);
validcount++;
PlaneMirrorFlag++;
GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
ClearClipper();
glEnable(GL_CLIP_PLANE0+renderdepth);
// This only works properly for non-sloped planes so don't bother with the math.
//double d[4]={origin->a/65536., origin->c/65536., origin->b/65536., FIXED2FLOAT(origin->d)};
double d[4]={0, static_cast<double>(PlaneMirrorMode), 0, FIXED2FLOAT(origin->d)};
glClipPlane(GL_CLIP_PLANE0+renderdepth, d);
GLRenderer->DrawScene();
glDisable(GL_CLIP_PLANE0+renderdepth);
PlaneMirrorFlag--;
PlaneMirrorMode=old_pm;
}
void GLFlat::DrawSubsector(subsector_t * sub)
{
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
if (plane.plane.a | plane.plane.b)
{
for (unsigned int k = 0; k < sub->numlines; k++)
{
vertex_t *vt = sub->firstline[k].v1;
ptr->x = vt->fx;
ptr->y = vt->fy;
ptr->z = plane.plane.ZatPoint(vt->fx, vt->fy) + dz;
ptr->u = vt->fx / 64.f;
ptr->v = -vt->fy / 64.f;
ptr++;
}
}
else
{
float zc = FIXED2FLOAT(plane.plane.Zat0()) + dz;
for (unsigned int k = 0; k < sub->numlines; k++)
{
vertex_t *vt = sub->firstline[k].v1;
ptr->x = vt->fx;
ptr->y = vt->fy;
ptr->z = zc;
ptr->u = vt->fx / 64.f;
ptr->v = -vt->fy / 64.f;
ptr++;
}
}
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
flatvertices += sub->numlines;
flatprimitives++;
}
static boolean RB_GenerateDecal(vtxlist_t *vl, int *drawcount)
{
vtx_t *v;
rbDecal_t *decal;
float offset;
int count;
int i;
v = &drawVertex[*drawcount];
decal = (rbDecal_t*)vl->data;
count = *drawcount;
for(i = 0; i < decal->numpoints - 2; ++i)
{
RB_AddTriangle(count, count + 1 + i, count + 2 + i);
}
offset = 0;
if(decal->type == DCT_UPPERWALL || decal->type == DCT_CEILING)
{
offset = FIXED2FLOAT(decal->initialStickZ - decal->stickSector->ceilingheight);
}
else if(decal->type == DCT_LOWERWALL || decal->type == DCT_FLOOR)
{
offset = FIXED2FLOAT(decal->initialStickZ - decal->stickSector->floorheight);
}
for(i = 0; i < decal->numpoints; ++i)
{
v[i].x = decal->points[i].x;
v[i].y = decal->points[i].y;
v[i].z = decal->points[i].z - offset;
v[i].tu = decal->points[i].tu;
v[i].tv = decal->points[i].tv;
v[i].r =
v[i].g =
v[i].b =
v[i].a = (byte)(decal->alpha * 255.0f);
}
*drawcount += decal->numpoints;
return true;
}
static void SkyVertex(int r, int c)
{
angle_t topAngle= (angle_t)(c / (float)columns * ANGLE_MAX);
angle_t sideAngle = maxSideAngle * (rows - r) / rows;
fixed_t height = finesine[sideAngle>>ANGLETOFINESHIFT];
fixed_t realRadius = FixedMul(scale, finecosine[sideAngle>>ANGLETOFINESHIFT]);
fixed_t x = FixedMul(realRadius, finecosine[topAngle>>ANGLETOFINESHIFT]);
fixed_t y = (!yflip) ? FixedMul(scale, height) : FixedMul(scale, height) * -1;
fixed_t z = FixedMul(realRadius, finesine[topAngle>>ANGLETOFINESHIFT]);
float fx, fy, fz;
float color = r * 1.f / rows;
float u, v;
float timesRepeat;
timesRepeat = (short)(4 * (256.f / texw));
if (timesRepeat == 0.f) timesRepeat = 1.f;
if (!foglayer)
{
gl_SetColor(255, 0, NULL, r==0? 0.0f : 1.0f);
// And the texture coordinates.
if(!yflip) // Flipped Y is for the lower hemisphere.
{
u = (-timesRepeat * c / (float)columns) ;
v = (r / (float)rows) + yAdd;
}
else
{
u = (-timesRepeat * c / (float)columns) ;
v = 1.0f + ((rows-r)/(float)rows) + yAdd;
}
glTexCoord2f(skymirror? -u:u, v);
}
if (r != 4) y+=FRACUNIT*300;
// And finally the vertex.
fx =-FIXED2FLOAT(x); // Doom mirrors the sky vertically!
fy = FIXED2FLOAT(y);
fz = FIXED2FLOAT(z);
glVertex3f(fx, fy - 1.f, fz);
}
void ADynamicLight::LinkLight()
{
// mark the old light nodes
FLightNode * node;
node = touching_sides;
while (node)
{
node->lightsource = NULL;
node = node->nextTarget;
}
node = touching_subsectors;
while (node)
{
node->lightsource = NULL;
node = node->nextTarget;
}
if (radius>0)
{
// passing in radius*radius allows us to do a distance check without any calls to sqrtf
::validcount++;
subsector_t * subSec = R_PointInSubsector(x, y);
if (subSec)
{
float fradius = FIXED2FLOAT(radius);
CollectWithinRadius(subSec, fradius*fradius);
}
}
// Now delete any nodes that won't be used. These are the ones where
// m_thing is still NULL.
node = touching_sides;
while (node)
{
if (node->lightsource == NULL)
{
node = DeleteLightNode(node);
}
else
node = node->nextTarget;
}
node = touching_subsectors;
while (node)
{
if (node->lightsource == NULL)
{
node = DeleteLightNode(node);
}
else
node = node->nextTarget;
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::SortWallIntoPlane(SortNode * head,SortNode * sort)
{
GLFlat * fh=&flats[drawitems[head->itemindex].index];
GLWall * ws=&walls[drawitems[sort->itemindex].index];
GLWall * ws1;
bool ceiling = fh->z > FIXED2FLOAT(viewz);
if (ws->ztop[0]>fh->z && ws->zbottom[0]<fh->z)
{
// We have to split this wall!
// WARNING: NEVER EVER push a member of an array onto the array itself.
// Bad things will happen if the memory must be reallocated!
GLWall w=*ws;
AddWall(&w);
ws1=&walls[walls.Size()-1];
ws=&walls[drawitems[sort->itemindex].index]; // may have been reallocated!
float newtexv = ws->uplft.v + ((ws->lolft.v - ws->uplft.v) / (ws->zbottom[0] - ws->ztop[0])) * (fh->z - ws->ztop[0]);
// I make the very big assumption here that translucent walls in sloped sectors
// and 3D-floors never coexist in the same level. If that were the case this
// code would become extremely more complicated.
if (!ceiling)
{
ws->ztop[1] = ws1->zbottom[1] = ws->ztop[0] = ws1->zbottom[0] = fh->z;
ws->uprgt.v = ws1->lorgt.v = ws->uplft.v = ws1->lolft.v = newtexv;
}
else
{
ws1->ztop[1] = ws->zbottom[1] = ws1->ztop[0] = ws->zbottom[0] = fh->z;
ws1->uplft.v = ws->lolft.v = ws1->uprgt.v = ws->lorgt.v=newtexv;
}
SortNode * sort2=SortNodes.GetNew();
memset(sort2,0,sizeof(SortNode));
sort2->itemindex=drawitems.Size()-1;
head->AddToLeft(sort);
head->AddToRight(sort2);
}
else if ((ws->zbottom[0]<fh->z && !ceiling) || (ws->ztop[0]>fh->z && ceiling)) // completely on the left side
{
head->AddToLeft(sort);
}
else
{
head->AddToRight(sort);
}
}
void FSkyVertexBuffer::SkyVertex(int r, int c, bool yflip)
{
static const angle_t maxSideAngle = ANGLE_180 / 3;
static const fixed_t scale = 10000 << FRACBITS;
angle_t topAngle= (angle_t)(c / (float)mColumns * ANGLE_MAX);
angle_t sideAngle = maxSideAngle * (mRows - r) / mRows;
fixed_t height = finesine[sideAngle>>ANGLETOFINESHIFT];
fixed_t realRadius = FixedMul(scale, finecosine[sideAngle>>ANGLETOFINESHIFT]);
fixed_t x = FixedMul(realRadius, finecosine[topAngle>>ANGLETOFINESHIFT]);
fixed_t y = (!yflip) ? FixedMul(scale, height) : FixedMul(scale, height) * -1;
fixed_t z = FixedMul(realRadius, finesine[topAngle>>ANGLETOFINESHIFT]);
FSkyVertex vert;
vert.color = r == 0 ? 0xffffff : 0xffffffff;
// And the texture coordinates.
if(!yflip) // Flipped Y is for the lower hemisphere.
{
vert.u = (-c / (float)mColumns) ;
vert.v = (r / (float)mRows);
}
else
{
vert.u = (-c / (float)mColumns);
vert.v = 1.0f + ((mRows - r) / (float)mRows);
}
if (r != 4) y+=FRACUNIT*300;
// And finally the vertex.
vert.x =-FIXED2FLOAT(x); // Doom mirrors the sky vertically!
vert.y = FIXED2FLOAT(y) - 1.f;
vert.z = FIXED2FLOAT(z);
mVertices.Push(vert);
}
//==========================================================================
//
//
//
//==========================================================================
void GLSprite::SplitSprite(sector_t * frontsector, bool translucent)
{
GLSprite copySprite;
fixed_t lightbottom;
float maplightbottom;
unsigned int i;
bool put=false;
TArray<lightlist_t> & lightlist=frontsector->e->XFloor.lightlist;
//y1+=y;
//y2+=y;
//y=0;
for(i=0; i<lightlist.Size(); i++)
{
// Particles don't go through here so we can safely assume that actor is not NULL
if (i<lightlist.Size()-1) lightbottom=lightlist[i+1].plane.ZatPoint(actor->x,actor->y);
else lightbottom=frontsector->floorplane.ZatPoint(actor->x,actor->y);
//maplighttop=FIXED2FLOAT(lightlist[i].height);
maplightbottom=FIXED2FLOAT(lightbottom);
if (maplightbottom<z2) maplightbottom=z2;
if (maplightbottom<z1)
{
copySprite=*this;
copySprite.lightlevel=*lightlist[i].p_lightlevel;
copySprite.Colormap.CopyLightColor(*lightlist[i].p_extra_colormap);
if (glset.nocoloredspritelighting)
{
int v = (copySprite.Colormap.LightColor.r + copySprite.Colormap.LightColor.g + copySprite.Colormap.LightColor.b )/3;
copySprite.Colormap.LightColor.r=
copySprite.Colormap.LightColor.g=
copySprite.Colormap.LightColor.b=(255+v+v)/3;
}
if (!gl_isWhite(ThingColor))
{
copySprite.Colormap.LightColor.r=(copySprite.Colormap.LightColor.r*ThingColor.r)>>8;
copySprite.Colormap.LightColor.g=(copySprite.Colormap.LightColor.g*ThingColor.g)>>8;
copySprite.Colormap.LightColor.b=(copySprite.Colormap.LightColor.b*ThingColor.b)>>8;
}
z1=copySprite.z2=maplightbottom;
vt=copySprite.vb=copySprite.vt+
(maplightbottom-copySprite.z1)*(copySprite.vb-copySprite.vt)/(z2-copySprite.z1);
copySprite.PutSprite(translucent);
put=true;
}
//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::SortSpriteIntoPlane(SortNode * head,SortNode * sort)
{
GLFlat * fh=&flats[drawitems[head->itemindex].index];
GLSprite * ss=&sprites[drawitems[sort->itemindex].index];
GLSprite * ss1;
bool ceiling = fh->z > FIXED2FLOAT(viewz);
if (ss->z1>fh->z && ss->z2<fh->z)
{
// We have to split this sprite!
GLSprite s=*ss;
AddSprite(&s);
ss1=&sprites[sprites.Size()-1];
ss=&sprites[drawitems[sort->itemindex].index]; // may have been reallocated!
float newtexv=ss->vt + ((ss->vb-ss->vt)/(ss->z2-ss->z1))*(fh->z-ss->z1);
if (!ceiling)
{
ss->z1=ss1->z2=fh->z;
ss->vt=ss1->vb=newtexv;
}
else
{
ss1->z1=ss->z2=fh->z;
ss1->vt=ss->vb=newtexv;
}
SortNode * sort2=SortNodes.GetNew();
memset(sort2,0,sizeof(SortNode));
sort2->itemindex=drawitems.Size()-1;
head->AddToLeft(sort);
head->AddToRight(sort2);
}
else if ((ss->z2<fh->z && !ceiling) || (ss->z1>fh->z && ceiling)) // completely on the left side
{
head->AddToLeft(sort);
}
else
{
head->AddToRight(sort);
}
}
float ADynamicLight::DistToSeg(seg_t *seg)
{
float u, px, py;
float seg_dx = FIXED2FLOAT(seg->v2->x - seg->v1->x);
float seg_dy = FIXED2FLOAT(seg->v2->y - seg->v1->y);
float seg_length_sq = seg_dx * seg_dx + seg_dy * seg_dy;
u = ( FIXED2FLOAT(x - seg->v1->x) * seg_dx + FIXED2FLOAT(y - seg->v1->y) * seg_dy) / seg_length_sq;
if (u < 0.f) u = 0.f; // clamp the test point to the line segment
if (u > 1.f) u = 1.f;
px = FIXED2FLOAT(seg->v1->x) + (u * seg_dx);
py = FIXED2FLOAT(seg->v1->y) + (u * seg_dy);
px -= FIXED2FLOAT(x);
py -= FIXED2FLOAT(y);
return (px*px) + (py*py);
}
void RenderAutomap()
{
size_t i;
glDisable(GL_TEXTURE_2D);
glColor4f(0.2,0.2,0,1);
DrawQuad(0,0,1,1);
glColor4f(1,1,1,1);
glPushMatrix();
glTranslatef(0.5, 0.5, 0);
glScalef(-0.001, 0.001, 0.001);
AActor *mo = consoleplayer().mo;
if(mo)
glTranslatef(FIXED2FLOAT(mo->x), FIXED2FLOAT(mo->y), 0);
glRotatef(180, 0, 0, 1);
glBegin(GL_LINES);
// grid
// walls
for(i = 0; i < numlines; i++)
{
if (!(lines[i].flags & ML_MAPPED))
continue;
glVertex2f(FIXED2FLOAT(lines[i].v1->x), FIXED2FLOAT(lines[i].v1->y));
glVertex2f(FIXED2FLOAT(lines[i].v2->x), FIXED2FLOAT(lines[i].v2->y));
}
// players
for (i = 0; i < players.size(); i++)
{
}
// things
glEnd();
glPopMatrix();
}
void FDrawInfo::FloodLowerGap(seg_t * seg)
{
wallseg ws;
sector_t ffake, bfake;
sector_t * fakefsector = gl_FakeFlat(seg->frontsector, &ffake, true);
sector_t * fakebsector = gl_FakeFlat(seg->backsector, &bfake, false);
vertex_t * v1, * v2;
// Although the plane can be sloped this code will only be called
// when the edge itself is not.
fixed_t backz = fakebsector->floorplane.ZatPoint(seg->v1);
fixed_t frontz = fakefsector->floorplane.ZatPoint(seg->v1);
if (fakebsector->GetTexture(sector_t::floor) == skyflatnum) return;
if (fakebsector->GetPlaneTexZ(sector_t::floor) > viewz) return;
if (seg->sidedef == seg->linedef->sidedef[0])
{
v1=seg->linedef->v1;
v2=seg->linedef->v2;
}
else
{
v1=seg->linedef->v2;
v2=seg->linedef->v1;
}
ws.x1= FIXED2FLOAT(v1->x);
ws.y1= FIXED2FLOAT(v1->y);
ws.x2= FIXED2FLOAT(v2->x);
ws.y2= FIXED2FLOAT(v2->y);
ws.z2= FIXED2FLOAT(frontz);
ws.z1= FIXED2FLOAT(backz);
// Step1: Draw a stencil into the gap
SetupFloodStencil(&ws);
// Step2: Project the ceiling plane into the gap
DrawFloodedPlane(&ws, ws.z1, fakebsector, false);
// Step3: Delete the stencil
ClearFloodStencil(&ws);
}
//==========================================================================
//
// 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, 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);
gltexture->Bind();
float fviewx = FIXED2FLOAT(viewx);
float fviewy = FIXED2FLOAT(viewy);
float fviewz = FIXED2FLOAT(viewz);
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);
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(px1, planez, py1, px1 / 64, -py1 / 64);
ptr++;
ptr->Set(px2, planez, py2, px2 / 64, -py2 / 64);
ptr++;
ptr->Set(px3, planez, py3, px3 / 64, -py3 / 64);
ptr++;
ptr->Set(px4, planez, py4, px4 / 64, -py4 / 64);
ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
gl_RenderState.EnableTextureMatrix(false);
}
void GLWall::SetupLights()
{
float vtx[]={glseg.x1,zbottom[0],glseg.y1, glseg.x1,ztop[0],glseg.y1, glseg.x2,ztop[1],glseg.y2, glseg.x2,zbottom[1],glseg.y2};
Plane p;
lightdata.Clear();
p.Init(vtx,4);
if (!p.ValidNormal())
{
return;
}
for(int i=0;i<2;i++)
{
FLightNode *node;
if (!seg->bPolySeg)
{
// Iterate through all dynamic lights which touch this wall and render them
if (seg->sidedef)
{
node = seg->sidedef->lighthead[i];
}
else node = NULL;
}
else if (sub)
{
// To avoid constant rechecking for polyobjects use the subsector's lightlist instead
node = sub->lighthead[i];
}
else node = NULL;
while (node)
{
if (!(node->lightsource->flags2&MF2_DORMANT))
{
iter_dlight++;
Vector fn, pos;
float x = FIXED2FLOAT(node->lightsource->x);
float y = FIXED2FLOAT(node->lightsource->y);
float z = FIXED2FLOAT(node->lightsource->z);
float dist = fabsf(p.DistToPoint(x, z, y));
float radius = (node->lightsource->GetRadius() * gl_lights_size);
float scale = 1.0f / ((2.f * radius) - dist);
if (radius > 0.f && dist < radius)
{
Vector nearPt, up, right;
pos.Set(x,z,y);
fn=p.Normal();
fn.GetRightUp(right, up);
Vector tmpVec = fn * dist;
nearPt = pos + tmpVec;
Vector t1;
int outcnt[4]={0,0,0,0};
texcoord tcs[4];
// do a quick check whether the light touches this polygon
for(int i=0;i<4;i++)
{
t1.Set(&vtx[i*3]);
Vector nearToVert = t1 - nearPt;
tcs[i].u = (nearToVert.Dot(right) * scale) + 0.5f;
tcs[i].v = (nearToVert.Dot(up) * scale) + 0.5f;
if (tcs[i].u<0) outcnt[0]++;
if (tcs[i].u>1) outcnt[1]++;
if (tcs[i].v<0) outcnt[2]++;
if (tcs[i].v>1) outcnt[3]++;
}
if (outcnt[0]!=4 && outcnt[1]!=4 && outcnt[2]!=4 && outcnt[3]!=4)
{
gl_GetLight(p, node->lightsource, Colormap.colormap, true, false, lightdata);
}
}
}
node = node->nextLight;
}
}
int numlights[3];
lightdata.Combine(numlights, gl.MaxLights());
if (numlights[2] > 0)
{
draw_dlight+=numlights[2]/2;
gl_RenderState.EnableLight(true);
gl_RenderState.SetLights(numlights, &lightdata.arrays[0][0]);
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//
//
// Horizon Portal
//
// This simply draws the area in medium sized squares. Drawing it as a whole
// polygon creates visible inaccuracies.
//
// Originally I tried to minimize the amount of data to be drawn but there
// are 2 problems with it:
//
// 1. Setting this up completely negates any performance gains.
// 2. It doesn't work with a 360° field of view (as when you are looking up.)
//
//
// So the brute force mechanism is just as good.
//
//
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//
// GLHorizonPortal::DrawContents
//
//-----------------------------------------------------------------------------
void GLHorizonPortal::DrawContents()
{
PortalAll.Clock();
GLSectorPlane * sp=&origin->plane;
FMaterial * gltexture;
PalEntry color;
float z;
player_t * player=&players[consoleplayer];
gltexture=FMaterial::ValidateTexture(sp->texture, true);
if (!gltexture)
{
ClearScreen();
PortalAll.Unclock();
return;
}
z=FIXED2FLOAT(sp->texheight);
if (gltexture && gltexture->tex->isFullbright())
{
// glowing textures are always drawn full bright without color
gl_SetColor(255, 0, NULL, 1.f);
gl_SetFog(255, 0, &origin->colormap, false);
}
else
{
int rel = getExtraLight();
gl_SetColor(origin->lightlevel, rel, &origin->colormap, 1.0f);
gl_SetFog(origin->lightlevel, rel, &origin->colormap, false);
}
gltexture->Bind(origin->colormap.colormap);
gl_RenderState.EnableAlphaTest(false);
gl_RenderState.BlendFunc(GL_ONE,GL_ZERO);
gl_RenderState.Apply();
bool pushed = gl_SetPlaneTextureRotation(sp, gltexture);
float vx=FIXED2FLOAT(viewx);
float vy=FIXED2FLOAT(viewy);
// Draw to some far away boundary
for(float x=-32768+vx; x<32768+vx; x+=4096)
{
for(float y=-32768+vy; y<32768+vy;y+=4096)
{
glBegin(GL_TRIANGLE_FAN);
glTexCoord2f(x/64, -y/64);
glVertex3f(x, z, y);
glTexCoord2f(x/64 + 64, -y/64);
glVertex3f(x + 4096, z, y);
glTexCoord2f(x/64 + 64, -y/64 - 64);
glVertex3f(x + 4096, z, y + 4096);
glTexCoord2f(x/64, -y/64 - 64);
glVertex3f(x, z, y + 4096);
glEnd();
}
}
float vz=FIXED2FLOAT(viewz);
float tz=(z-vz);///64.0f;
// fill the gap between the polygon and the true horizon
// Since I can't draw into infinity there can always be a
// small gap
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(512.f, 0);
glVertex3f(-32768+vx, z, -32768+vy);
glTexCoord2f(512.f, tz);
glVertex3f(-32768+vx, vz, -32768+vy);
glTexCoord2f(-512.f, 0);
glVertex3f(-32768+vx, z, 32768+vy);
glTexCoord2f(-512.f, tz);
glVertex3f(-32768+vx, vz, 32768+vy);
glTexCoord2f(512.f, 0);
glVertex3f( 32768+vx, z, 32768+vy);
glTexCoord2f(512.f, tz);
glVertex3f( 32768+vx, vz, 32768+vy);
glTexCoord2f(-512.f, 0);
glVertex3f( 32768+vx, z, -32768+vy);
glTexCoord2f(-512.f, tz);
glVertex3f( 32768+vx, vz, -32768+vy);
glTexCoord2f(512.f, 0);
glVertex3f(-32768+vx, z, -32768+vy);
glTexCoord2f(512.f, tz);
glVertex3f(-32768+vx, vz, -32768+vy);
glEnd();
if (pushed)
{
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
PortalAll.Unclock();
}
void FNodeBuilder::ExtractMini (FMiniBSP *bsp)
{
unsigned int i;
bsp->bDirty = false;
bsp->Verts.Resize(Vertices.Size());
for (i = 0; i < Vertices.Size(); ++i)
{
bsp->Verts[i].set(Vertices[i].x, Vertices[i].y);
}
bsp->Subsectors.Resize(Subsectors.Size());
memset(&bsp->Subsectors[0], 0, Subsectors.Size() * sizeof(subsector_t));
bsp->Nodes.Resize(Nodes.Size());
memcpy(&bsp->Nodes[0], &Nodes[0], Nodes.Size()*sizeof(node_t));
for (i = 0; i < Nodes.Size(); ++i)
{
D(Printf(PRINT_LOG, "Node %d:\n", i));
// Go backwards because on 64-bit systems, both of the intchildren are
// inside the first in-game child.
for (int j = 1; j >= 0; --j)
{
if (bsp->Nodes[i].intchildren[j] & 0x80000000)
{
D(Printf(PRINT_LOG, " subsector %d\n", bsp->Nodes[i].intchildren[j] & 0x7FFFFFFF));
bsp->Nodes[i].children[j] = (uint8_t *)&bsp->Subsectors[bsp->Nodes[i].intchildren[j] & 0x7fffffff] + 1;
}
else
{
D(Printf(PRINT_LOG, " node %d\n", bsp->Nodes[i].intchildren[j]));
bsp->Nodes[i].children[j] = &bsp->Nodes[bsp->Nodes[i].intchildren[j]];
}
}
for (int j = 0; j < 2; ++j)
{
for (int k = 0; k < 4; ++k)
{
bsp->Nodes[i].bbox[j][k] = FIXED2FLOAT(bsp->Nodes[i].nb_bbox[j][k]);
}
}
}
if (GLNodes)
{
TArray<glseg_t> glsegs;
for (i = 0; i < Subsectors.Size(); ++i)
{
uint32_t numsegs = CloseSubsector (glsegs, i, &bsp->Verts[0]);
bsp->Subsectors[i].numlines = numsegs;
bsp->Subsectors[i].firstline = &bsp->Segs[bsp->Segs.Size() - numsegs];
}
bsp->Segs.Resize(glsegs.Size());
for (i = 0; i < glsegs.Size(); ++i)
{
bsp->Segs[i] = *(seg_t *)&glsegs[i];
}
}
else
{
memcpy(&bsp->Subsectors[0], &Subsectors[0], Subsectors.Size()*sizeof(subsector_t));
bsp->Segs.Resize(Segs.Size());
for (i = 0; i < Segs.Size(); ++i)
{
const FPrivSeg *org = &Segs[SegList[i].SegNum];
seg_t *out = &bsp->Segs[i];
D(Printf(PRINT_LOG, "Seg %d: v1(%d) -> v2(%d)\n", i, org->v1, org->v2));
out->v1 = &bsp->Verts[org->v1];
out->v2 = &bsp->Verts[org->v2];
out->backsector = org->backsector;
out->frontsector = org->frontsector;
if (org->sidedef != int(NO_SIDE))
{
out->linedef = Level.Lines + org->linedef;
out->sidedef = Level.Sides + org->sidedef;
}
else // part of a miniseg
{
out->linedef = NULL;
out->sidedef = NULL;
}
}
for (i = 0; i < bsp->Subsectors.Size(); ++i)
{
bsp->Subsectors[i].firstline = &bsp->Segs[(size_t)bsp->Subsectors[i].firstline];
}
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::DrawDecal(DBaseDecal *decal)
{
line_t * line=seg->linedef;
side_t * side=seg->sidedef;
int i;
fixed_t zpos;
int light;
int rel;
float a;
bool flipx, flipy, loadAlpha;
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;
if (texture->UseType == FTexture::TEX_MiscPatch)
{
// We need to create a clone of this texture where we can force the
// texture filtering offset in.
if (texture->gl_info.DecalTexture == NULL)
{
texture->gl_info.DecalTexture = new FCloneTexture(texture, FTexture::TEX_Decal);
}
tex = FMaterial::ValidateTexture(texture->gl_info.DecalTexture);
}
else tex = FMaterial::ValidateTexture(texture);
// 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();
}
int r = RPART(decal->AlphaColor);
int g = GPART(decal->AlphaColor);
int b = BPART(decal->AlphaColor);
FColormap p = Colormap;
if (glset.nocoloredspritelighting)
{
int v = (Colormap.LightColor.r * 77 + Colormap.LightColor.g*143 + Colormap.LightColor.b*35)/255;
p.LightColor = PalEntry(p.colormap, v, v, v);
}
float red, green, blue;
if (decal->RenderStyle.Flags & STYLEF_RedIsAlpha)
{
loadAlpha = true;
p.colormap=CM_SHADE;
if (glset.lightmode != 8)
{
gl_GetLightColor(light, rel, &p, &red, &green, &blue);
}
else
{
gl_GetLightColor(lightlevel, rellight, &p, &red, &green, &blue);
}
if (gl_lights && GLRenderer->mLightCount && !gl_fixedcolormap && gl_light_sprites)
{
float result[3];
fixed_t x, y;
decal->GetXY(seg->sidedef, x, y);
gl_GetSpriteLight(NULL, x, y, zpos, sub, Colormap.colormap-CM_DESAT0, result, line, side == line->sidedef[0]? 0:1);
if (glset.lightmode != 8)
{
red = clamp<float>(result[0]+red, 0, 1.0f);
green = clamp<float>(result[1]+green, 0, 1.0f);
blue = clamp<float>(result[2]+blue, 0, 1.0f);
}
else
{
gl_RenderState.SetDynLight(result[0], result[1], result[2]);
}
}
BYTE R = xs_RoundToInt(r * red);
BYTE G = xs_RoundToInt(g * green);
BYTE B = xs_RoundToInt(b * blue);
gl_ModifyColor(R,G,B, Colormap.colormap);
red = R/255.f;
green = G/255.f;
blue = B/255.f;
}
else
{
loadAlpha = false;
red = 1.f;
green = 1.f;
blue = 1.f;
}
a = FIXED2FLOAT(decal->Alpha);
// now clip the decal to the actual polygon
float decalwidth = tex->TextureWidth(GLUSE_PATCH) * FIXED2FLOAT(decal->ScaleX);
float decalheight= tex->TextureHeight(GLUSE_PATCH) * FIXED2FLOAT(decal->ScaleY);
float decallefto = tex->GetLeftOffset(GLUSE_PATCH) * FIXED2FLOAT(decal->ScaleX);
float decaltopo = tex->GetTopOffset(GLUSE_PATCH) * FIXED2FLOAT(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 / (1<<30) - (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+= FRACUNIT*(flipy? decalheight-decaltopo : decaltopo);
tex->BindPatch(p.colormap, decal->Translation);
dv[1].z=dv[2].z = FIXED2FLOAT(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 / FIXED2FLOAT(decal->ScaleX));
dv[3].u=dv[2].u = tex->GetU(righttex / FIXED2FLOAT(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;
}
// fog is set once per wall in the calling function and not per decal!
if (loadAlpha)
{
glColor4f(red, green, blue, a);
if (glset.lightmode == 8)
{
if (gl_fixedcolormap)
glVertexAttrib1f(VATTR_LIGHTLEVEL, 1.0);
else
glVertexAttrib1f(VATTR_LIGHTLEVEL, gl_CalcLightLevel(light, rel, false) / 255.0);
}
}
else
{
if (glset.lightmode == 8)
{
gl_SetColor(light, rel, &p, a, extralight); // Korshun.
}
else
{
gl_SetColor(light, rel, &p, a);
}
}
PalEntry fc = gl_RenderState.GetFogColor();
if (decal->RenderStyle.BlendOp == STYLEOP_Add && decal->RenderStyle.DestAlpha == STYLEALPHA_One)
{
gl_RenderState.SetFog(0,-1);
}
gl_SetRenderStyle(decal->RenderStyle, false, false);
// 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_threshold);
else gl_RenderState.AlphaFunc(GL_GREATER, 0.f);
gl_RenderState.Apply();
glBegin(GL_TRIANGLE_FAN);
for(i=0;i<4;i++)
{
glTexCoord2f(dv[i].u,dv[i].v);
glVertex3f(dv[i].x,dv[i].z,dv[i].y);
}
glEnd();
rendered_decals++;
gl_RenderState.SetFog(fc,-1);
gl_RenderState.SetDynLight(0,0,0);
}
bool gl_GetSpriteLight(AActor *self, fixed_t x, fixed_t y, fixed_t z, subsector_t * subsec, int desaturation, float * out, line_t *line, int side)
{
ADynamicLight *light;
float frac, lr, lg, lb;
float radius;
bool changed = false;
out[0]=out[1]=out[2]=0;
for(int j=0;j<2;j++)
{
// Go through both light lists
FLightNode * node = subsec->lighthead[j];
while (node)
{
light=node->lightsource;
//if (!light->owned || light->target == NULL || light->target->IsVisibleToPlayer())
{
if (!(light->flags2&MF2_DORMANT) &&
(!(light->flags4&MF4_DONTLIGHTSELF) || light->target != self))
{
float dist = FVector3(FIXED2FLOAT(x - light->x), FIXED2FLOAT(y - light->y), FIXED2FLOAT(z - light->z)).Length();
radius = light->GetRadius() * gl_lights_size;
if (dist < radius)
{
frac = 1.0f - (dist / radius);
if (frac > 0)
{
if (line != NULL)
{
if (P_PointOnLineSide(light->x, light->y, line) != side)
{
node = node->nextLight;
continue;
}
}
lr = light->GetRed() / 255.0f * gl_lights_intensity;
lg = light->GetGreen() / 255.0f * gl_lights_intensity;
lb = light->GetBlue() / 255.0f * gl_lights_intensity;
if (light->IsSubtractive())
{
float bright = FVector3(lr, lg, lb).Length();
FVector3 lightColor(lr, lg, lb);
lr = (bright - lr) * -1;
lg = (bright - lg) * -1;
lb = (bright - lb) * -1;
}
out[0] += lr * frac;
out[1] += lg * frac;
out[2] += lb * frac;
changed = true;
}
}
}
}
node = node->nextLight;
}
}
// Desaturate dynamic lighting if applicable
if (desaturation>0 && desaturation<=CM_DESAT31)
{
float gray=(out[0]*77 + out[1]*143 + out[2]*37)/257;
out[0]= (out[0]*(31-desaturation)+ gray*desaturation)/31;
out[1]= (out[1]*(31-desaturation)+ gray*desaturation)/31;
out[2]= (out[2]*(31-desaturation)+ gray*desaturation)/31;
}
return changed;
}
void GLWall::SkyBottom(seg_t * seg,sector_t * fs,sector_t * bs,vertex_t * v1,vertex_t * v2)
{
if (fs->GetTexture(sector_t::floor)==skyflatnum)
{
if ((bs->special&0xff) == NoSkyDraw) return;
FTexture * tex = TexMan(seg->sidedef->GetTexture(side_t::bottom));
// For lower skies the normal logic only applies to walls with no lower texture!
if (tex->UseType==FTexture::TEX_Null)
{
if (bs->GetTexture(sector_t::floor)==skyflatnum)
{
// if the back sector is closed the sky must be drawn!
if (bs->ceilingplane.ZatPoint(v1) > bs->floorplane.ZatPoint(v1) ||
bs->ceilingplane.ZatPoint(v2) > bs->floorplane.ZatPoint(v2))
return;
}
else
{
// Special hack for Vrack2b
if (bs->floorplane.ZatPoint(FIXED2FLOAT(viewx), FIXED2FLOAT(viewy)) > FIXED2FLOAT(viewz)) return;
}
}
zbottom[0]=zbottom[1]=-32768.0f;
if ((tex && tex->UseType!=FTexture::TEX_Null) || bs->GetTexture(sector_t::floor)!=skyflatnum)
{
ztop[0]=zfloor[0];
ztop[1]=zfloor[1];
}
else
{
ztop[0]=FIXED2FLOAT(bs->floorplane.ZatPoint(v1));
ztop[1]=FIXED2FLOAT(bs->floorplane.ZatPoint(v2));
flags|=GLWF_SKYHACK; // mid textures on such lines need special treatment!
}
}
else
{
FPortal *pfront = fs->portals[sector_t::floor];
FPortal *pback = bs->portals[sector_t::floor];
float frontreflect = fs->GetReflect(sector_t::floor);
if (frontreflect > 0)
{
float backreflect = bs->GetReflect(sector_t::floor);
if (backreflect > 0 && bs->floorplane.d == fs->floorplane.d)
{
// Don't add intra-portal line to the portal.
return;
}
}
else if (pfront == NULL || pfront == pback)
{
return;
}
// stacked sectors
fixed_t fsc1=fs->floorplane.ZatPoint(v1);
fixed_t fsc2=fs->floorplane.ZatPoint(v2);
zbottom[0]=zbottom[1]=-32768.0f;
ztop[0]=FIXED2FLOAT(fsc1);
ztop[1]=FIXED2FLOAT(fsc2);
}
SkyPlane(fs, sector_t::floor, true);
}
void GLWall::SkyTop(seg_t * seg,sector_t * fs,sector_t * bs,vertex_t * v1,vertex_t * v2)
{
if (fs->GetTexture(sector_t::ceiling)==skyflatnum)
{
if ((bs->special&0xff) == NoSkyDraw) return;
if (bs->GetTexture(sector_t::ceiling)==skyflatnum)
{
// if the back sector is closed the sky must be drawn!
if (bs->ceilingplane.ZatPoint(v1) > bs->floorplane.ZatPoint(v1) ||
bs->ceilingplane.ZatPoint(v2) > bs->floorplane.ZatPoint(v2) || bs->transdoor)
return;
// one more check for some ugly transparent door hacks
if (bs->floorplane.a==0 && bs->floorplane.b==0 && fs->floorplane.a==0 && fs->floorplane.b==0)
{
if (bs->GetPlaneTexZ(sector_t::floor)==fs->GetPlaneTexZ(sector_t::floor)+FRACUNIT)
{
FTexture * tex = TexMan(seg->sidedef->GetTexture(side_t::bottom));
if (!tex || tex->UseType==FTexture::TEX_Null) return;
// very, very, very ugly special case (See Icarus MAP14)
// It is VERY important that this is only done for a floor height difference of 1
// or it will cause glitches elsewhere.
tex = TexMan(seg->sidedef->GetTexture(side_t::mid));
if (tex != NULL && !(seg->linedef->flags & ML_DONTPEGTOP) &&
seg->sidedef->GetTextureYOffset(side_t::mid) > 0)
{
ztop[0]=ztop[1]=32768.0f;
zbottom[0]=zbottom[1]=
FIXED2FLOAT(bs->ceilingplane.ZatPoint(v2) + seg->sidedef->GetTextureYOffset(side_t::mid));
SkyPlane(fs, sector_t::ceiling, false);
return;
}
}
}
}
ztop[0]=ztop[1]=32768.0f;
FTexture * tex = TexMan(seg->sidedef->GetTexture(side_t::top));
if (bs->GetTexture(sector_t::ceiling) != skyflatnum)
{
zbottom[0]=zceil[0];
zbottom[1]=zceil[1];
}
else
{
zbottom[0]=FIXED2FLOAT(bs->ceilingplane.ZatPoint(v1));
zbottom[1]=FIXED2FLOAT(bs->ceilingplane.ZatPoint(v2));
flags|=GLWF_SKYHACK; // mid textures on such lines need special treatment!
}
}
else
{
FPortal *pfront = fs->portals[sector_t::ceiling];
FPortal *pback = bs->portals[sector_t::ceiling];
float frontreflect = fs->GetReflect(sector_t::ceiling);
if (frontreflect > 0)
{
float backreflect = bs->GetReflect(sector_t::ceiling);
if (backreflect > 0 && bs->ceilingplane.d == fs->ceilingplane.d)
{
// Don't add intra-portal line to the portal.
return;
}
}
else if (pfront == NULL || pfront == pback)
{
return;
}
// stacked sectors
fixed_t fsc1=fs->ceilingplane.ZatPoint(v1);
fixed_t fsc2=fs->ceilingplane.ZatPoint(v2);
ztop[0]=ztop[1]=32768.0f;
zbottom[0]=FIXED2FLOAT(fsc1);
zbottom[1]=FIXED2FLOAT(fsc2);
}
SkyPlane(fs, sector_t::ceiling, true);
}
//-----------------------------------------------------------------------------
//
// R_EnterMirror
//
//-----------------------------------------------------------------------------
void GLMirrorPortal::DrawContents()
{
if (renderdepth>r_mirror_recursions)
{
ClearScreen();
return;
}
GLRenderer->mCurrentPortal = this;
angle_t startang = viewangle;
fixed_t startx = viewx;
fixed_t starty = viewy;
vertex_t *v1 = linedef->v1;
vertex_t *v2 = linedef->v2;
// Reflect the current view behind the mirror.
if (linedef->dx == 0)
{
// vertical mirror
viewx = v1->x - startx + v1->x;
// Compensation for reendering inaccuracies
if (startx<v1->x) viewx -= FRACUNIT/2;
else viewx += FRACUNIT/2;
}
else if (linedef->dy == 0)
{
// horizontal mirror
viewy = v1->y - starty + v1->y;
// Compensation for reendering inaccuracies
if (starty<v1->y) viewy -= FRACUNIT/2;
else viewy += FRACUNIT/2;
}
else
{
// any mirror--use floats to avoid integer overflow.
// Use doubles to avoid losing precision which is very important here.
double dx = FIXED2FLOAT(v2->x - v1->x);
double dy = FIXED2FLOAT(v2->y - v1->y);
double x1 = FIXED2FLOAT(v1->x);
double y1 = FIXED2FLOAT(v1->y);
double x = FIXED2FLOAT(startx);
double y = FIXED2FLOAT(starty);
// the above two cases catch len == 0
double r = ((x - x1)*dx + (y - y1)*dy) / (dx*dx + dy*dy);
viewx = FLOAT2FIXED((x1 + r * dx)*2 - x);
viewy = FLOAT2FIXED((y1 + r * dy)*2 - y);
// Compensation for reendering inaccuracies
FVector2 v(-dx, dy);
v.MakeUnit();
viewx+= FLOAT2FIXED(v[1] * renderdepth / 2);
viewy+= FLOAT2FIXED(v[0] * renderdepth / 2);
}
// we cannot afford any imprecisions caused by R_PointToAngle2 here. They'd be visible as seams around the mirror.
viewangle = 2*R_PointToAnglePrecise (linedef->v1->x, linedef->v1->y,
linedef->v2->x, linedef->v2->y) - startang;
GLRenderer->mViewActor = NULL;
validcount++;
MirrorFlag++;
GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
clipper.Clear();
angle_t af = GLRenderer->FrustumAngle();
if (af<ANGLE_180) clipper.SafeAddClipRangeRealAngles(viewangle+af, viewangle-af);
angle_t a2 = linedef->v1->GetClipAngle();
angle_t a1 = linedef->v2->GetClipAngle();
clipper.SafeAddClipRange(a1,a2);
GLRenderer->DrawScene();
MirrorFlag--;
}
void FNodeBuilder::Extract (FLevelLocals &level)
{
int i;
auto &outVerts = level.vertexes;
int vertCount = Vertices.Size ();
outVerts.Alloc(vertCount);
for (i = 0; i < vertCount; ++i)
{
outVerts[i].set(Vertices[i].x, Vertices[i].y);
}
auto &outSubs = level.subsectors;
auto subCount = Subsectors.Size();
outSubs.Alloc(subCount);
memset(&outSubs[0], 0, subCount * sizeof(subsector_t));
auto &outNodes = level.nodes;
auto nodeCount = Nodes.Size ();
outNodes.Alloc(nodeCount);
memcpy (&outNodes[0], &Nodes[0], nodeCount*sizeof(node_t));
for (unsigned i = 0; i < nodeCount; ++i)
{
D(Printf(PRINT_LOG, "Node %d: Splitter[%08x,%08x] [%08x,%08x]\n", i,
outNodes[i].x, outNodes[i].y, outNodes[i].dx, outNodes[i].dy));
// Go backwards because on 64-bit systems, both of the intchildren are
// inside the first in-game child.
for (int j = 1; j >= 0; --j)
{
if (outNodes[i].intchildren[j] & 0x80000000)
{
D(Printf(PRINT_LOG, " subsector %d\n", outNodes[i].intchildren[j] & 0x7FFFFFFF));
outNodes[i].children[j] = (uint8_t *)(&outSubs[(outNodes[i].intchildren[j] & 0x7fffffff)]) + 1;
}
else
{
D(Printf(PRINT_LOG, " node %d\n", outNodes[i].intchildren[j]));
outNodes[i].children[j] = &outNodes[outNodes[i].intchildren[j]];
}
}
for (int j = 0; j < 2; ++j)
{
for (int k = 0; k < 4; ++k)
{
outNodes[i].bbox[j][k] = FIXED2FLOAT(outNodes[i].nb_bbox[j][k]);
}
}
}
auto &outSegs = level.segs;
if (GLNodes)
{
TArray<glseg_t> segs (Segs.Size()*5/4);
for (unsigned i = 0; i < subCount; ++i)
{
uint32_t numsegs = CloseSubsector (segs, i, &outVerts[0]);
outSubs[i].numlines = numsegs;
outSubs[i].firstline = (seg_t *)(size_t)(segs.Size() - numsegs);
}
auto segCount = segs.Size ();
outSegs.Alloc(segCount);
for (unsigned i = 0; i < segCount; ++i)
{
outSegs[i] = *(seg_t *)&segs[i];
if (segs[i].Partner != DWORD_MAX)
{
const uint32_t storedseg = Segs[segs[i].Partner].storedseg;
outSegs[i].PartnerSeg = DWORD_MAX == storedseg ? nullptr : &outSegs[storedseg];
}
else
{
outSegs[i].PartnerSeg = nullptr;
}
}
}
else
{
memcpy (&outSubs[0], &Subsectors[0], subCount*sizeof(subsector_t));
auto segCount = Segs.Size ();
outSegs.Alloc(segCount);
for (unsigned i = 0; i < segCount; ++i)
{
const FPrivSeg *org = &Segs[SegList[i].SegNum];
seg_t *out = &outSegs[i];
D(Printf(PRINT_LOG, "Seg %d: v1(%d) -> v2(%d)\n", i, org->v1, org->v2));
out->v1 = &outVerts[org->v1];
out->v2 = &outVerts[org->v2];
out->backsector = org->backsector;
out->frontsector = org->frontsector;
out->linedef = Level.Lines + org->linedef;
out->sidedef = Level.Sides + org->sidedef;
out->PartnerSeg = nullptr;
}
}
for (unsigned i = 0; i < subCount; ++i)
{
outSubs[i].firstline = &outSegs[(size_t)outSubs[i].firstline];
}
D(Printf("%i segs, %i nodes, %i subsectors\n", segCount, nodeCount, subCount));
for (i = 0; i < Level.NumLines; ++i)
{
Level.Lines[i].v1 = &outVerts[(size_t)Level.Lines[i].v1];
Level.Lines[i].v2 = &outVerts[(size_t)Level.Lines[i].v2];
}
}
//==========================================================================
//
// 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, true);
if (!gltexture) return;
if (gl_fixedcolormap)
{
Colormap.GetFixedColormap();
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);
gltexture->Bind(Colormap.colormap);
float fviewx = FIXED2FLOAT(viewx);
float fviewy = FIXED2FLOAT(viewy);
float fviewz = FIXED2FLOAT(viewz);
gl_RenderState.Apply();
bool pushed = gl_SetPlaneTextureRotation(&plane, gltexture);
glBegin(GL_TRIANGLE_FAN);
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);
glTexCoord2f(px1 / 64, -py1 / 64);
glVertex3f(px1, planez, py1);
glTexCoord2f(px2 / 64, -py2 / 64);
glVertex3f(px2, planez, py2);
glTexCoord2f(px3 / 64, -py3 / 64);
glVertex3f(px3, planez, py3);
glTexCoord2f(px4 / 64, -py4 / 64);
glVertex3f(px4, planez, py4);
glEnd();
if (pushed)
{
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
}
//==========================================================================
//
// Calculate sky texture
//
//==========================================================================
void GLWall::SkyPlane(sector_t *sector, int plane, bool allowreflect)
{
FPortal *portal = sector->portals[plane];
if (portal != NULL)
{
if (GLPortal::instack[1-plane]) return;
type=RENDERWALL_SECTORSTACK;
this->portal = portal;
}
else if (sector->GetTexture(plane)==skyflatnum)
{
GLSkyInfo skyinfo;
ASkyViewpoint * skyboxx = sector->GetSkyBox(plane);
// JUSTHIT is used as an indicator that a skybox is in use.
// This is to avoid recursion
if (!gl_noskyboxes && skyboxx && GLRenderer->mViewActor!=skyboxx && !(skyboxx->flags&MF_JUSTHIT))
{
type=RENDERWALL_SKYBOX;
skybox=skyboxx;
}
else
{
int sky1 = sector->sky;
memset(&skyinfo, 0, sizeof(skyinfo));
if ((sky1 & PL_SKYFLAT) && (sky1 & (PL_SKYFLAT-1)))
{
const line_t *l = &lines[(sky1&(PL_SKYFLAT-1))-1];
const side_t *s = l->sidedef[0];
int pos;
if (level.flags & LEVEL_SWAPSKIES && s->GetTexture(side_t::bottom).isValid())
{
pos = side_t::bottom;
}
else
{
pos = side_t::top;
}
FTextureID texno = s->GetTexture(pos);
skyinfo.texture[0] = FMaterial::ValidateTexture(texno, false, true);
if (!skyinfo.texture[0] || skyinfo.texture[0]->tex->UseType == FTexture::TEX_Null) goto normalsky;
skyinfo.skytexno1 = texno;
skyinfo.x_offset[0] = ANGLE_TO_FLOAT(s->GetTextureXOffset(pos));
skyinfo.y_offset = FIXED2FLOAT(s->GetTextureYOffset(pos));
skyinfo.mirrored = !l->args[2];
}
else
{
normalsky:
if (level.flags&LEVEL_DOUBLESKY)
{
skyinfo.texture[1]=FMaterial::ValidateTexture(sky1texture, false, true);
skyinfo.x_offset[1] = GLRenderer->mSky1Pos;
skyinfo.doublesky = true;
}
if ((level.flags&LEVEL_SWAPSKIES || (sky1==PL_SKYFLAT) || (level.flags&LEVEL_DOUBLESKY)) &&
sky2texture!=sky1texture) // If both skies are equal use the scroll offset of the first!
{
skyinfo.texture[0]=FMaterial::ValidateTexture(sky2texture, false, true);
skyinfo.skytexno1=sky2texture;
skyinfo.sky2 = true;
skyinfo.x_offset[0] = GLRenderer->mSky2Pos;
}
else
{
skyinfo.texture[0]=FMaterial::ValidateTexture(sky1texture, false, true);
skyinfo.skytexno1=sky1texture;
skyinfo.x_offset[0] = GLRenderer->mSky1Pos;
}
}
if (skyfog>0)
{
skyinfo.fadecolor=Colormap.FadeColor;
skyinfo.fadecolor.a=0;
}
else skyinfo.fadecolor=0;
type=RENDERWALL_SKY;
sky=UniqueSkies.Get(&skyinfo);
}
}
else if (allowreflect && sector->GetReflect(plane) > 0)
{
if ((plane == sector_t::ceiling && viewz > sector->ceilingplane.d) ||
(plane == sector_t::floor && viewz < -sector->floorplane.d)) return;
type=RENDERWALL_PLANEMIRROR;
planemirror = plane == sector_t::ceiling? §or->ceilingplane : §or->floorplane;
}
else return;
PutWall(0);
}
bool APathFollower::Interpolate ()
{
fixed_t dx = 0, dy = 0, dz = 0;
if ((args[2] & 8) && Time > 0.f)
{
dx = x;
dy = y;
dz = z;
}
if (CurrNode->Next==NULL) return false;
UnlinkFromWorld ();
if (args[2] & 1)
{ // linear
x = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->x), FIXED2FLOAT(CurrNode->Next->x)));
y = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->y), FIXED2FLOAT(CurrNode->Next->y)));
z = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->z), FIXED2FLOAT(CurrNode->Next->z)));
}
else
{ // spline
if (CurrNode->Next->Next==NULL) return false;
x = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->x), FIXED2FLOAT(CurrNode->x),
FIXED2FLOAT(CurrNode->Next->x), FIXED2FLOAT(CurrNode->Next->Next->x)));
y = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->y), FIXED2FLOAT(CurrNode->y),
FIXED2FLOAT(CurrNode->Next->y), FIXED2FLOAT(CurrNode->Next->Next->y)));
z = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->z), FIXED2FLOAT(CurrNode->z),
FIXED2FLOAT(CurrNode->Next->z), FIXED2FLOAT(CurrNode->Next->Next->z)));
}
LinkToWorld ();
if (args[2] & 6)
{
if (args[2] & 8)
{
if (args[2] & 1)
{ // linear
dx = CurrNode->Next->x - CurrNode->x;
dy = CurrNode->Next->y - CurrNode->y;
dz = CurrNode->Next->z - CurrNode->z;
}
else if (Time > 0.f)
{ // spline
dx = x - dx;
dy = y - dy;
dz = z - dz;
}
else
{
int realarg = args[2];
args[2] &= ~(2|4|8);
Time += 0.1f;
dx = x;
dy = y;
dz = z;
Interpolate ();
Time -= 0.1f;
args[2] = realarg;
dx = x - dx;
dy = y - dy;
dz = z - dz;
x -= dx;
y -= dy;
z -= dz;
}
if (args[2] & 2)
{ // adjust yaw
angle = R_PointToAngle2 (0, 0, dx, dy);
}
if (args[2] & 4)
{ // adjust pitch; use floats for precision
float fdx = FIXED2FLOAT(dx);
float fdy = FIXED2FLOAT(dy);
float fdz = FIXED2FLOAT(-dz);
float dist = (float)sqrt (fdx*fdx + fdy*fdy);
float ang = dist != 0.f ? (float)atan2 (fdz, dist) : 0;
pitch = (angle_t)(ang * 2147483648.f / PI);
}
}
else
{
if (args[2] & 2)
{ // interpolate angle
float angle1 = (float)CurrNode->angle;
float angle2 = (float)CurrNode->Next->angle;
if (angle2 - angle1 <= -2147483648.f)
{
float lerped = Lerp (angle1, angle2 + 4294967296.f);
if (lerped >= 4294967296.f)
{
angle = (angle_t)(lerped - 4294967296.f);
}
else
{
angle = (angle_t)lerped;
}
}
else if (angle2 - angle1 >= 2147483648.f)
{
float lerped = Lerp (angle1, angle2 - 4294967296.f);
if (lerped < 0.f)
{
angle = (angle_t)(lerped + 4294967296.f);
}
else
{
angle = (angle_t)lerped;
}
}
else
{
angle = (angle_t)Lerp (angle1, angle2);
}
}
if (args[2] & 1)
{ // linear
if (args[2] & 4)
{ // interpolate pitch
pitch = FLOAT2FIXED(Lerp (FIXED2FLOAT(CurrNode->pitch), FIXED2FLOAT(CurrNode->Next->pitch)));
}
}
else
{ // spline
if (args[2] & 4)
{ // interpolate pitch
pitch = FLOAT2FIXED(Splerp (FIXED2FLOAT(PrevNode->pitch), FIXED2FLOAT(CurrNode->pitch),
FIXED2FLOAT(CurrNode->Next->pitch), FIXED2FLOAT(CurrNode->Next->Next->pitch)));
}
}
}
}
return true;
}
void FGLRenderer::DrawTexture(FTexture *img, DCanvas::DrawParms &parms)
{
double xscale = parms.destwidth / parms.texwidth;
double yscale = parms.destheight / parms.texheight;
double x = parms.x - parms.left * xscale;
double y = parms.y - parms.top * yscale;
double w = parms.destwidth;
double h = parms.destheight;
float u1, v1, u2, v2, r, g, b;
float light = 1.f;
FMaterial * gltex = FMaterial::ValidateTexture(img);
const PatchTextureInfo * pti;
if (parms.colorOverlay)
{
// Right now there's only black. Should be implemented properly later
light = 1.f - APART(parms.colorOverlay)/255.f;
}
if (!img->bHasCanvas)
{
if (!parms.alphaChannel)
{
int translation = 0;
if (parms.remap != NULL && !parms.remap->Inactive)
{
GLTranslationPalette * pal = static_cast<GLTranslationPalette*>(parms.remap->GetNative());
if (pal) translation = -pal->GetIndex();
}
pti = gltex->BindPatch(CM_DEFAULT, translation);
}
else
{
// This is an alpha texture
pti = gltex->BindPatch(CM_SHADE, 0);
}
if (!pti) return;
u1 = pti->GetUL();
v1 = pti->GetVT();
u2 = pti->GetUR();
v2 = pti->GetVB();
}
else
{
gltex->Bind(CM_DEFAULT, 0, 0);
u2=1.f;
v2=-1.f;
u1 = v1 = 0.f;
gl_RenderState.SetTextureMode(TM_OPAQUE);
}
if (parms.flipX)
{
float temp = u1;
u1 = u2;
u2 = temp;
}
if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
{
x += parms.windowleft * xscale;
w -= (parms.texwidth - parms.windowright + parms.windowleft) * xscale;
u1 = float(u1 + parms.windowleft / parms.texwidth);
u2 = float(u2 - (parms.texwidth - parms.windowright) / parms.texwidth);
}
if (parms.style.Flags & STYLEF_ColorIsFixed)
{
r = RPART(parms.fillcolor)/255.0f;
g = GPART(parms.fillcolor)/255.0f;
b = BPART(parms.fillcolor)/255.0f;
}
else
{
r = g = b = light;
}
// scissor test doesn't use the current viewport for the coordinates, so use real screen coordinates
int btm = (SCREENHEIGHT - screen->GetHeight()) / 2;
btm = SCREENHEIGHT - btm;
gl.Enable(GL_SCISSOR_TEST);
int space = (static_cast<OpenGLFrameBuffer*>(screen)->GetTrueHeight()-screen->GetHeight())/2;
gl.Scissor(parms.lclip, btm - parms.dclip + space, parms.rclip - parms.lclip, parms.dclip - parms.uclip);
gl_SetRenderStyle(parms.style, !parms.masked, false);
if (img->bHasCanvas)
{
gl_RenderState.SetTextureMode(TM_OPAQUE);
}
gl.Color4f(r, g, b, FIXED2FLOAT(parms.alpha));
gl_RenderState.EnableAlphaTest(false);
gl_RenderState.Apply();
gl.Begin(GL_TRIANGLE_STRIP);
gl.TexCoord2f(u1, v1);
glVertex2d(x, y);
gl.TexCoord2f(u1, v2);
glVertex2d(x, y + h);
gl.TexCoord2f(u2, v1);
glVertex2d(x + w, y);
gl.TexCoord2f(u2, v2);
glVertex2d(x + w, y + h);
gl.End();
gl_RenderState.EnableAlphaTest(true);
gl.Scissor(0, 0, screen->GetWidth(), screen->GetHeight());
gl.Disable(GL_SCISSOR_TEST);
gl_RenderState.SetTextureMode(TM_MODULATE);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
}
