void GLWall::RenderTextured(int rflags)
{
int tmode = gl_RenderState.GetTextureMode();
int rel = rellight + getExtraLight();
if (flags & GLWF_GLOW)
{
gl_RenderState.EnableGlow(true);
gl_RenderState.SetGlowPlanes(topplane, bottomplane);
gl_RenderState.SetGlowParams(topglowcolor, bottomglowcolor);
}
gl_RenderState.SetMaterial(gltexture, flags & 3, 0, -1, false);
if (type == RENDERWALL_M2SNF)
{
if (flags & GLT_CLAMPY)
{
if (tmode == TM_MODULATE) gl_RenderState.SetTextureMode(TM_CLAMPY);
}
gl_SetFog(255, 0, NULL, false);
}
float absalpha = fabsf(alpha);
if (lightlist == NULL)
{
gl_SetColor(lightlevel, rel, Colormap, absalpha);
if (type != RENDERWALL_M2SNF) gl_SetFog(lightlevel, rel, &Colormap, RenderStyle == STYLE_Add);
RenderWall(rflags);
}
else
{
gl_RenderState.EnableSplit(true);
for (unsigned i = 0; i < lightlist->Size(); i++)
{
secplane_t &lowplane = i == (*lightlist).Size() - 1 ? bottomplane : (*lightlist)[i + 1].plane;
// this must use the exact same calculation method as GLWall::Process etc.
float low1 = lowplane.ZatPoint(vertexes[0]);
float low2 = lowplane.ZatPoint(vertexes[1]);
if (low1 < ztop[0] || low2 < ztop[1])
{
int thisll = (*lightlist)[i].caster != NULL ? gl_ClampLight(*(*lightlist)[i].p_lightlevel) : lightlevel;
FColormap thiscm;
thiscm.FadeColor = Colormap.FadeColor;
thiscm.CopyFrom3DLight(&(*lightlist)[i]);
gl_SetColor(thisll, rel, thiscm, absalpha);
if (type != RENDERWALL_M2SNF) gl_SetFog(thisll, rel, &thiscm, RenderStyle == STYLE_Add);
gl_RenderState.SetSplitPlanes((*lightlist)[i].plane, lowplane);
RenderWall(rflags);
}
if (low1 <= zbottom[0] && low2 <= zbottom[1]) break;
}
gl_RenderState.EnableSplit(false);
}
gl_RenderState.SetTextureMode(tmode);
gl_RenderState.EnableGlow(false);
}
void GLWall::RenderTranslucentWall()
{
bool transparent = gltexture? gltexture->GetTransparent() : false;
// currently the only modes possible are solid, additive or translucent
// and until that changes I won't fix this code for the new blending modes!
bool isadditive = RenderStyle == STYLE_Add;
if (gl_fixedcolormap == CM_DEFAULT && gl_lights && (gl.flags & RFL_BUFFER_STORAGE))
{
SetupLights();
}
if (!transparent) gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_threshold);
else gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
if (isadditive) gl_RenderState.BlendFunc(GL_SRC_ALPHA,GL_ONE);
int extra;
if (gltexture)
{
gl_RenderState.EnableGlow(!!(flags & GLWF_GLOW));
gl_RenderState.SetMaterial(gltexture, flags & 3, 0, -1, false);
extra = getExtraLight();
}
else
{
gl_RenderState.EnableTexture(false);
extra = 0;
}
int tmode = gl_RenderState.GetTextureMode();
gl_SetColor(lightlevel, extra, Colormap, fabsf(alpha));
if (type!=RENDERWALL_M2SNF) gl_SetFog(lightlevel, extra, &Colormap, isadditive);
else
{
if (flags & GLT_CLAMPY)
{
if (tmode == TM_MODULATE) gl_RenderState.SetTextureMode(TM_CLAMPY);
}
gl_SetFog(255, 0, NULL, false);
}
RenderWall(RWF_TEXTURED|RWF_NOSPLIT);
// restore default settings
if (isadditive) gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (!gltexture)
{
gl_RenderState.EnableTexture(true);
}
gl_RenderState.EnableGlow(false);
gl_RenderState.SetTextureMode(tmode);
}
//==========================================================================
//
//
//
//==========================================================================
void GLFlat::Draw(int pass, bool trans) // trans only has meaning for GLPASS_LIGHTSONLY
{
int rel = getExtraLight();
#ifdef _DEBUG
if (sector->sectornum == gl_breaksec)
{
int a = 0;
}
#endif
switch (pass)
{
case GLPASS_PLAIN: // Single-pass rendering
case GLPASS_ALL:
gl_SetColor(lightlevel, rel, Colormap,1.0f);
gl_SetFog(lightlevel, rel, &Colormap, false);
gl_RenderState.SetMaterial(gltexture, CLAMP_NONE, 0, -1, false);
gl_SetPlaneTextureRotation(&plane, gltexture);
DrawSubsectors(pass, (pass == GLPASS_ALL || dynlightindex > -1), false);
gl_RenderState.EnableTextureMatrix(false);
break;
case GLPASS_LIGHTSONLY:
if (!trans || gltexture)
{
ProcessLights(trans);
}
break;
case GLPASS_TRANSLUCENT:
if (renderstyle==STYLE_Add) gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE);
gl_SetColor(lightlevel, rel, Colormap, alpha);
gl_SetFog(lightlevel, rel, &Colormap, false);
gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_threshold);
if (!gltexture)
{
gl_RenderState.EnableTexture(false);
DrawSubsectors(pass, false, true);
gl_RenderState.EnableTexture(true);
}
else
{
gl_RenderState.SetMaterial(gltexture, CLAMP_NONE, 0, -1, false);
gl_SetPlaneTextureRotation(&plane, gltexture);
DrawSubsectors(pass, true, true);
gl_RenderState.EnableTextureMatrix(false);
}
if (renderstyle==STYLE_Add) gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::DoDrawDecals()
{
if (seg->sidedef && seg->sidedef->AttachedDecals)
{
if (lightlist != NULL)
{
gl_RenderState.EnableSplit(true);
}
else
{
gl_SetFog(lightlevel, rellight + getExtraLight(), &Colormap, false);
}
DBaseDecal *decal = seg->sidedef->AttachedDecals;
while (decal)
{
DrawDecal(decal);
decal = decal->WallNext;
}
if (lightlist != NULL)
{
gl_RenderState.EnableSplit(false);
}
}
}
void GLWall::RenderFogBoundary()
{
if (gl_fogmode && gl_fixedcolormap == 0)
{
if (!gl.legacyMode)
{
int rel = rellight + getExtraLight();
gl_SetFog(lightlevel, rel, &Colormap, false);
gl_RenderState.EnableDrawBuffers(1);
gl_RenderState.SetEffect(EFF_FOGBOUNDARY);
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(-1.0f, -128.0f);
RenderWall(RWF_BLANK);
glPolygonOffset(0.0f, 0.0f);
glDisable(GL_POLYGON_OFFSET_FILL);
gl_RenderState.SetEffect(EFF_NONE);
gl_RenderState.EnableDrawBuffers(gl_RenderState.GetPassDrawBufferCount());
}
else
{
RenderFogBoundaryCompat();
}
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::RenderMirrorSurface()
{
if (GLRenderer->mirrortexture == NULL) return;
// For the sphere map effect we need a normal of the mirror surface,
FVector3 v = glseg.Normal();
if (!gl.legacyMode)
{
// we use texture coordinates and texture matrix to pass the normal stuff to the shader so that the default vertex buffer format can be used as is.
tcs[LOLFT].u = tcs[LORGT].u = tcs[UPLFT].u = tcs[UPRGT].u = v.X;
tcs[LOLFT].v = tcs[LORGT].v = tcs[UPLFT].v = tcs[UPRGT].v = v.Z;
gl_RenderState.EnableTextureMatrix(true);
gl_RenderState.mTextureMatrix.computeNormalMatrix(gl_RenderState.mViewMatrix);
}
else
{
glNormal3fv(&v[0]);
}
// Use sphere mapping for this
gl_RenderState.SetEffect(EFF_SPHEREMAP);
gl_SetColor(lightlevel, 0, Colormap ,0.1f);
gl_SetFog(lightlevel, 0, &Colormap, true);
gl_RenderState.BlendFunc(GL_SRC_ALPHA,GL_ONE);
gl_RenderState.AlphaFunc(GL_GREATER,0);
glDepthFunc(GL_LEQUAL);
FMaterial * pat=FMaterial::ValidateTexture(GLRenderer->mirrortexture, false);
gl_RenderState.SetMaterial(pat, CLAMP_NONE, 0, -1, false);
flags &= ~GLWF_GLOW;
RenderWall(RWF_BLANK);
gl_RenderState.EnableTextureMatrix(false);
gl_RenderState.SetEffect(EFF_NONE);
// Restore the defaults for the translucent pass
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_sprite_threshold);
glDepthFunc(GL_LESS);
// This is drawn in the translucent pass which is done after the decal pass
// As a result the decals have to be drawn here.
if (seg->sidedef->AttachedDecals)
{
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(-1.0f, -128.0f);
glDepthMask(false);
DoDrawDecals();
glDepthMask(true);
glPolygonOffset(0.0f, 0.0f);
glDisable(GL_POLYGON_OFFSET_FILL);
gl_RenderState.SetTextureMode(TM_MODULATE);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
}
void GLWall::RenderTranslucentWall()
{
if (gltexture)
{
if (gl_fixedcolormap == CM_DEFAULT && gl_lights && gl.lightmethod == LM_DIRECT)
{
SetupLights();
}
if (!gltexture->GetTransparent()) gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_threshold);
else gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
if (RenderStyle == STYLE_Add) gl_RenderState.BlendFunc(GL_SRC_ALPHA,GL_ONE);
RenderTextured(RWF_TEXTURED | RWF_NOSPLIT);
if (RenderStyle == STYLE_Add) gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
else
{
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
gl_SetColor(lightlevel, 0, Colormap, fabsf(alpha));
gl_SetFog(lightlevel, 0, &Colormap, RenderStyle == STYLE_Add);
gl_RenderState.EnableTexture(false);
RenderWall(RWF_NOSPLIT);
gl_RenderState.EnableTexture(true);
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//
//
// 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();
}
//==========================================================================
//
// 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);
}
//==========================================================================
//
// 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);
}
}
//==========================================================================
//
// 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);
}
//==========================================================================
//
// Draw the plane segment into the gap
//
//==========================================================================
void GLDrawInfo::DrawFloodedPlane(wallseg * ws, float planez, sector_t * sec, bool ceiling)
{
GLSectorPlane plane;
int lightlevel;
FColormap Colormap;
FGLTexture * gltexture;
plane.GetFromSector(sec, ceiling);
gltexture=FGLTexture::ValidateTexture(plane.texture);
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? GetCeilingLight(sec) : GetFloorLight(sec));
}
int rel = extralight * gl_weaponlight;
gl_SetColor(lightlevel, rel, &Colormap, 1.0f);
gl_SetFog(lightlevel, rel, &Colormap, false);
gltexture->Bind(Colormap.LightColor.a);
gl_SetPlaneTextureRotation(&plane, gltexture);
float fviewx = TO_GL(viewx);
float fviewy = TO_GL(viewy);
float fviewz = TO_GL(viewz);
gl_ApplyShader();
gl.Begin(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);
gl.TexCoord2f(px1 / 64, -py1 / 64);
gl.Vertex3f(px1, planez, py1);
gl.TexCoord2f(px2 / 64, -py2 / 64);
gl.Vertex3f(px2, planez, py2);
gl.TexCoord2f(px3 / 64, -py3 / 64);
gl.Vertex3f(px3, planez, py3);
gl.TexCoord2f(px4 / 64, -py4 / 64);
gl.Vertex3f(px4, planez, py4);
gl.End();
gl.MatrixMode(GL_TEXTURE);
gl.PopMatrix();
gl.MatrixMode(GL_MODELVIEW);
}
//==========================================================================
//
//
//
//==========================================================================
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::Draw(int pass)
{
int rel;
int tmode;
#ifdef _DEBUG
if (seg->linedef-lines==879)
{
int a = 0;
}
#endif
switch (pass)
{
case GLPASS_LIGHTSONLY:
SetupLights();
break;
case GLPASS_ALL:
SetupLights();
// fall through
case GLPASS_PLAIN:
rel = rellight + getExtraLight();
gl_SetColor(lightlevel, rel, Colormap,1.0f);
tmode = gl_RenderState.GetTextureMode();
if (type!=RENDERWALL_M2SNF) gl_SetFog(lightlevel, rel, &Colormap, false);
else
{
if (flags & GLT_CLAMPY)
{
if (tmode == TM_MODULATE) gl_RenderState.SetTextureMode(TM_CLAMPY);
}
gl_SetFog(255, 0, NULL, false);
}
gl_RenderState.EnableGlow(!!(flags & GLWF_GLOW));
gl_RenderState.SetMaterial(gltexture, flags & 3, false, -1, false);
RenderWall(RWF_TEXTURED|RWF_GLOW);
gl_RenderState.EnableGlow(false);
gl_RenderState.SetTextureMode(tmode);
break;
case GLPASS_TRANSLUCENT:
switch (type)
{
case RENDERWALL_MIRRORSURFACE:
RenderMirrorSurface();
break;
case RENDERWALL_FOGBOUNDARY:
RenderFogBoundary();
break;
case RENDERWALL_COLORLAYER:
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(-1.0f, -128.0f);
RenderTranslucentWall();
glDisable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(0, 0);
default:
RenderTranslucentWall();
break;
}
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLSprite::Draw(int pass)
{
if (pass!=GLPASS_PLAIN && pass != GLPASS_ALL && pass!=GLPASS_TRANSLUCENT) return;
bool additivefog = false;
int rel = extralight*gl_weaponlight;
if (pass==GLPASS_TRANSLUCENT)
{
// The translucent pass requires special setup for the various modes.
// Brightmaps will only be used when doing regular drawing ops and having no fog
if (!gl_isBlack(Colormap.FadeColor) || level.flags&LEVEL_HASFADETABLE ||
RenderStyle.BlendOp != STYLEOP_Add)
{
gl_RenderState.EnableBrightmap(false);
}
gl_SetRenderStyle(RenderStyle, false,
// The rest of the needed checks are done inside gl_SetRenderStyle
trans > 1.f - FLT_EPSILON && gl_usecolorblending && gl_fixedcolormap < CM_FIRSTSPECIALCOLORMAP && actor &&
fullbright && gltexture && !gltexture->GetTransparent());
if (hw_styleflags == STYLEHW_NoAlphaTest)
{
gl_RenderState.EnableAlphaTest(false);
}
else
{
gl_RenderState.AlphaFunc(GL_GEQUAL,trans*gl_mask_sprite_threshold);
}
if (RenderStyle.BlendOp == STYLEOP_Fuzz)
{
float fuzzalpha=0.44f;
float minalpha=0.1f;
// fog + fuzz don't work well without some fiddling with the alpha value!
if (!gl_isBlack(Colormap.FadeColor))
{
float xcamera=FIXED2FLOAT(viewx);
float ycamera=FIXED2FLOAT(viewy);
float dist=Dist2(xcamera,ycamera, x,y);
if (!Colormap.FadeColor.a) Colormap.FadeColor.a=clamp<int>(255-lightlevel,60,255);
// this value was determined by trial and error and is scale dependent!
float factor=0.05f+exp(-Colormap.FadeColor.a*dist/62500.f);
fuzzalpha*=factor;
minalpha*=factor;
}
gl_RenderState.AlphaFunc(GL_GEQUAL,minalpha*gl_mask_sprite_threshold);
gl.Color4f(0.2f,0.2f,0.2f,fuzzalpha);
additivefog = true;
}
else if (RenderStyle.BlendOp == STYLEOP_Add && RenderStyle.DestAlpha == STYLEALPHA_One)
{
additivefog = true;
}
}
if (RenderStyle.BlendOp!=STYLEOP_Fuzz)
{
if (actor)
{
lightlevel = gl_SetSpriteLighting(RenderStyle, actor, lightlevel, rel, &Colormap, ThingColor, trans,
fullbright || gl_fixedcolormap >= CM_FIRSTSPECIALCOLORMAP, false);
}
else if (particle)
{
if (gl_light_particles)
{
lightlevel = gl_SetSpriteLight(particle, lightlevel, rel, &Colormap, trans, ThingColor);
}
else
{
gl_SetColor(lightlevel, rel, &Colormap, trans, ThingColor);
}
}
else return;
}
if (gl_isBlack(Colormap.FadeColor)) foglevel=lightlevel;
if (RenderStyle.Flags & STYLEF_FadeToBlack)
{
Colormap.FadeColor=0;
additivefog = true;
}
if (RenderStyle.Flags & STYLEF_InvertOverlay)
{
Colormap.FadeColor = Colormap.FadeColor.InverseColor();
additivefog=false;
}
gl_SetFog(foglevel, rel, &Colormap, additivefog);
if (gltexture) gltexture->BindPatch(Colormap.colormap,translation);
else if (!modelframe) gl_RenderState.EnableTexture(false);
if (!modelframe)
{
// [BB] Billboard stuff
const bool drawWithXYBillboard = ( !(actor && actor->renderflags & RF_FORCEYBILLBOARD)
//&& GLRenderer->mViewActor != NULL
&& (gl_billboard_mode == 1 || (actor && actor->renderflags & RF_FORCEXYBILLBOARD )) );
gl_RenderState.Apply();
gl.Begin(GL_TRIANGLE_STRIP);
if ( drawWithXYBillboard )
{
// Rotate the sprite about the vector starting at the center of the sprite
// triangle strip and with direction orthogonal to where the player is looking
// in the x/y plane.
float xcenter = (x1+x2)*0.5;
float ycenter = (y1+y2)*0.5;
float zcenter = (z1+z2)*0.5;
float angleRad = DEG2RAD(270. - float(GLRenderer->mAngles.Yaw));
Matrix3x4 mat;
mat.MakeIdentity();
mat.Translate( xcenter, zcenter, ycenter);
mat.Rotate(-sin(angleRad), 0, cos(angleRad), -GLRenderer->mAngles.Pitch);
mat.Translate( -xcenter, -zcenter, -ycenter);
Vector v1 = mat * Vector(x1,z1,y1);
Vector v2 = mat * Vector(x2,z1,y2);
Vector v3 = mat * Vector(x1,z2,y1);
Vector v4 = mat * Vector(x2,z2,y2);
if (gltexture)
{
gl.TexCoord2f(ul, vt);
gl.Vertex3fv(&v1[0]);
gl.TexCoord2f(ur, vt);
gl.Vertex3fv(&v2[0]);
gl.TexCoord2f(ul, vb);
gl.Vertex3fv(&v3[0]);
gl.TexCoord2f(ur, vb);
gl.Vertex3fv(&v4[0]);
}
else // Particle
{
gl.Vertex3fv(&v1[0]);
gl.Vertex3fv(&v2[0]);
gl.Vertex3fv(&v3[0]);
gl.Vertex3fv(&v4[0]);
}
}
else
{
if (gltexture)
{
gl.TexCoord2f(ul, vt);
gl.Vertex3f(x1, z1, y1);
gl.TexCoord2f(ur, vt);
gl.Vertex3f(x2, z1, y2);
gl.TexCoord2f(ul, vb);
gl.Vertex3f(x1, z2, y1);
gl.TexCoord2f(ur, vb);
gl.Vertex3f(x2, z2, y2);
}
else // Particle
{
gl.Vertex3f(x1, z1, y1);
gl.Vertex3f(x2, z1, y2);
gl.Vertex3f(x1, z2, y1);
gl.Vertex3f(x2, z2, y2);
}
}
gl.End();
}
else
{
gl_RenderModel(this, Colormap.colormap);
}
if (pass==GLPASS_TRANSLUCENT)
{
gl_RenderState.EnableBrightmap(true);
gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
gl_RenderState.SetTextureMode(TM_MODULATE);
// [BB] Restore the alpha test after drawing a smooth particle.
if (hw_styleflags == STYLEHW_NoAlphaTest)
{
gl_RenderState.EnableAlphaTest(true);
}
else
{
gl_RenderState.AlphaFunc(GL_GEQUAL,gl_mask_sprite_threshold);
}
}
gl_RenderState.EnableTexture(true);
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//
//
// 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, false, true);
if (!gltexture)
{
ClearScreen();
PortalAll.Unclock();
return;
}
gl_RenderState.SetCameraPos(ViewPos.X, ViewPos.Y, ViewPos.Z);
z=sp->Texheight;
if (gltexture && gltexture->tex->isFullbright())
{
// glowing textures are always drawn full bright without color
gl_SetColor(255, 0, origin->colormap, 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);
}
gl_RenderState.SetMaterial(gltexture, CLAMP_NONE, 0, -1, false);
gl_SetPlaneTextureRotation(sp, gltexture);
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
gl_RenderState.BlendFunc(GL_ONE,GL_ZERO);
gl_RenderState.Apply();
float vx= ViewPos.X;
float vy= ViewPos.Y;
// Draw to some far away boundary
// This is not drawn as larher strips because it causes visual glitches.
for(float x=-32768+vx; x<32768+vx; x+=4096)
{
for(float y=-32768+vy; y<32768+vy;y+=4096)
{
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(x, z, y, x / 64, -y / 64);
ptr++;
ptr->Set(x + 4096, z, y, x / 64 + 64, -y / 64);
ptr++;
ptr->Set(x, z, y + 4096, x / 64, -y / 64 - 64);
ptr++;
ptr->Set(x + 4096, z, y + 4096, x / 64 + 64, -y / 64 - 64);
ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
}
}
float vz= ViewPos.Z;
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
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
ptr->Set(-32768 + vx, z, -32768 + vy, 512.f, 0);
ptr++;
ptr->Set(-32768 + vx, vz, -32768 + vy, 512.f, tz);
ptr++;
ptr->Set(-32768 + vx, z, 32768 + vy, -512.f, 0);
ptr++;
ptr->Set(-32768 + vx, vz, 32768 + vy, -512.f, tz);
ptr++;
ptr->Set(32768 + vx, z, 32768 + vy, 512.f, 0);
ptr++;
ptr->Set(32768 + vx, vz, 32768 + vy, 512.f, tz);
ptr++;
ptr->Set(32768 + vx, z, -32768 + vy, -512.f, 0);
ptr++;
ptr->Set(32768 + vx, vz, -32768 + vy, -512.f, tz);
ptr++;
ptr->Set(-32768 + vx, z, -32768 + vy, 512.f, 0);
ptr++;
ptr->Set(-32768 + vx, vz, -32768 + vy, 512.f, tz);
ptr++;
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
gl_RenderState.EnableTextureMatrix(false);
PortalAll.Unclock();
}