void gl_RenderBSPNode (void *node)
{
if (numnodes == 0)
{
DoSubsector (subsectors);
return;
}
while (!((size_t)node & 1)) // Keep going until found a subsector
{
node_t *bsp = (node_t *)node;
// Decide which side the view point is on.
int side = R_PointOnSide(viewx, viewy, bsp);
// Recursively divide front space (toward the viewer).
gl_RenderBSPNode (bsp->children[side]);
// Possibly divide back space (away from the viewer).
side ^= 1;
if (!clipper.CheckBox(bsp->bbox[side]))
{
return;
}
node = bsp->children[side];
}
DoSubsector ((subsector_t *)((BYTE *)node - 1));
}
void FGLRenderer::CreateScene()
{
// reset the portal manager
GLPortal::StartFrame();
PO_LinkToSubsectors();
ProcessAll.Clock();
// clip the scene and fill the drawlists
for(unsigned i=0;i<portals.Size(); i++) portals[i]->glportal = NULL;
gl_spriteindex=0;
Bsp.Clock();
GLRenderer->mVBO->Map();
R_SetView();
validcount++; // used for processing sidedefs only once by the renderer.
gl_RenderBSPNode (nodes + numnodes - 1);
if (GLRenderer->mCurrentPortal != NULL) GLRenderer->mCurrentPortal->RenderAttached();
Bsp.Unclock();
// And now the crappy hacks that have to be done to avoid rendering anomalies:
gl_drawinfo->HandleMissingTextures(); // Missing upper/lower textures
gl_drawinfo->HandleHackedSubsectors(); // open sector hacks for deep water
gl_drawinfo->ProcessSectorStacks(); // merge visplanes of sector stacks
GLRenderer->mVBO->Unmap();
ProcessAll.Unclock();
}
