//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::DoDrawSorted(SortNode * head)
{
float clipsplit[2];
int relation = 0;
float z = 0.f;
gl_RenderState.GetClipSplit(clipsplit);
if (drawitems[head->itemindex].rendertype == GLDIT_FLAT)
{
z = flats[drawitems[head->itemindex].index].z;
relation = z > ViewPos.Z ? 1 : -1;
}
// left is further away, i.e. for stuff above viewz its z coordinate higher, for stuff below viewz its z coordinate is lower
if (head->left)
{
if (relation == -1)
{
gl_RenderState.SetClipSplit(clipsplit[0], z); // render below: set flat as top clip plane
}
else if (relation == 1)
{
gl_RenderState.SetClipSplit(z, clipsplit[1]); // render above: set flat as bottom clip plane
}
DoDrawSorted(head->left);
gl_RenderState.SetClipSplit(clipsplit);
}
DoDraw(GLPASS_TRANSLUCENT, head->itemindex, true);
if (head->equal)
{
SortNode * ehead=head->equal;
while (ehead)
{
DoDraw(GLPASS_TRANSLUCENT, ehead->itemindex, true);
ehead=ehead->equal;
}
}
// right is closer, i.e. for stuff above viewz its z coordinate is lower, for stuff below viewz its z coordinate is higher
if (head->right)
{
if (relation == 1)
{
gl_RenderState.SetClipSplit(clipsplit[0], z); // render below: set flat as top clip plane
}
else if (relation == -1)
{
gl_RenderState.SetClipSplit(z, clipsplit[1]); // render above: set flat as bottom clip plane
}
DoDrawSorted(head->right);
gl_RenderState.SetClipSplit(clipsplit);
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::DrawSorted()
{
if (drawitems.Size()==0) return;
if (!sorted)
{
GLRenderer->mVBO->Map();
MakeSortList();
sorted=DoSort(SortNodes[SortNodeStart]);
GLRenderer->mVBO->Unmap();
}
gl_RenderState.ClearClipSplit();
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
glEnable(GL_CLIP_DISTANCE1);
glEnable(GL_CLIP_DISTANCE2);
}
DoDrawSorted(sorted);
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
glDisable(GL_CLIP_DISTANCE1);
glDisable(GL_CLIP_DISTANCE2);
}
gl_RenderState.ClearClipSplit();
}
//==========================================================================
//
//
//
//==========================================================================
void FDrawInfo::DrawSorted(int listindex)
{
HWDrawList *dl = &drawlists[listindex];
if (dl->drawitems.Size()==0) return;
if (!dl->sorted)
{
GLRenderer->mVBO->Map();
dl->Sort(this);
GLRenderer->mVBO->Unmap();
}
gl_RenderState.ClearClipSplit();
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
glEnable(GL_CLIP_DISTANCE1);
glEnable(GL_CLIP_DISTANCE2);
}
DoDrawSorted(dl, dl->sorted);
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
glDisable(GL_CLIP_DISTANCE1);
glDisable(GL_CLIP_DISTANCE2);
}
gl_RenderState.ClearClipSplit();
}
//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::DrawSorted()
{
if (drawitems.Size()==0) return;
if (!sorted)
{
MakeSortList();
sorted=DoSort(SortNodes[SortNodeStart]);
}
DoDrawSorted(sorted);
}
//==========================================================================
//
//
//
//==========================================================================
void GLDrawList::DoDrawSorted(SortNode * head)
{
do
{
if (head->left)
{
DoDrawSorted(head->left);
}
DoDraw(GLPASS_TRANSLUCENT, head->itemindex);
if (head->equal)
{
SortNode * ehead=head->equal;
while (ehead)
{
DoDraw(GLPASS_TRANSLUCENT, ehead->itemindex);
ehead=ehead->equal;
}
}
}
while ((head=head->right));
}
