void FGLInterface::RenderTextureView (FCanvasTexture *tex, AActor *Viewpoint, int FOV)
{
FMaterial * gltex = FMaterial::ValidateTexture(tex, false);
int width = gltex->TextureWidth();
int height = gltex->TextureHeight();
gl_fixedcolormap=CM_DEFAULT;
gl_RenderState.SetFixedColormap(CM_DEFAULT);
if (gl.legacyMode)
{
// In legacy mode, fail if the requested texture is too large.
if (gltex->GetWidth() > screen->GetWidth() || gltex->GetHeight() > screen->GetHeight()) return;
glFlush();
}
else
{
GLRenderer->StartOffscreen();
gltex->BindToFrameBuffer();
}
GL_IRECT bounds;
bounds.left=bounds.top=0;
bounds.width=FHardwareTexture::GetTexDimension(gltex->GetWidth());
bounds.height=FHardwareTexture::GetTexDimension(gltex->GetHeight());
GLRenderer->RenderViewpoint(Viewpoint, &bounds, FOV, (float)width/height, (float)width/height, false, false);
if (gl.legacyMode)
{
glFlush();
gl_RenderState.SetMaterial(gltex, 0, 0, -1, false);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, bounds.width, bounds.height);
}
else
{
GLRenderer->EndOffscreen();
}
tex->SetUpdated();
camtexcount++;
}
void FGLRenderer::RenderTextureView(FCanvasTexture *tex, AActor *Viewpoint, double FOV)
{
// This doesn't need to clear the fake flat cache. It can be shared between camera textures and the main view of a scene.
FMaterial * gltex = FMaterial::ValidateTexture(tex, false);
int width = gltex->TextureWidth();
int height = gltex->TextureHeight();
StartOffscreen();
BindToFrameBuffer(gltex);
IntRect bounds;
bounds.left = bounds.top = 0;
bounds.width = FHardwareTexture::GetTexDimension(gltex->GetWidth());
bounds.height = FHardwareTexture::GetTexDimension(gltex->GetHeight());
FRenderViewpoint texvp;
RenderViewpoint(texvp, Viewpoint, &bounds, FOV, (float)width / height, (float)width / height, false, false);
EndOffscreen();
tex->SetUpdated(true);
static_cast<OpenGLFrameBuffer*>(screen)->camtexcount++;
}
//==========================================================================
//
//
//
//==========================================================================
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);
}
//==========================================================================
//
//
//
//==========================================================================
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);
}