void RAS_BucketManager::OrderBuckets(const MT_Transform& cameratrans, BucketList& buckets, vector<sortedmeshslot>& slots, bool alpha)
{
BucketList::iterator bit;
list<RAS_MeshSlot>::iterator mit;
size_t size = 0, i = 0;
/* Camera's near plane equation: pnorm.dot(point) + pval,
* but we leave out pval since it's constant anyway */
const MT_Vector3 pnorm(cameratrans.getBasis()[2]);
for (bit = buckets.begin(); bit != buckets.end(); ++bit)
{
SG_DList::iterator<RAS_MeshSlot> mit((*bit)->GetActiveMeshSlots());
for(mit.begin(); !mit.end(); ++mit)
size++;
}
slots.resize(size);
for (bit = buckets.begin(); bit != buckets.end(); ++bit)
{
RAS_MaterialBucket* bucket = *bit;
RAS_MeshSlot* ms;
// remove the mesh slot form the list, it culls them automatically for next frame
while((ms = bucket->GetNextActiveMeshSlot())) {
slots[i++].set(ms, bucket, pnorm);
}
}
if(alpha)
sort(slots.begin(), slots.end(), backtofront());
else
sort(slots.begin(), slots.end(), fronttoback());
}
void RAS_BucketManager::RenderSolidBuckets(
const MT_Transform& cameratrans, RAS_IRasterizer* rasty, RAS_IRenderTools* rendertools)
{
BucketList::iterator bit;
rasty->SetDepthMask(RAS_IRasterizer::KX_DEPTHMASK_ENABLED);
for (bit = m_SolidBuckets.begin(); bit != m_SolidBuckets.end(); ++bit) {
#if 1
RAS_MaterialBucket* bucket = *bit;
RAS_MeshSlot* ms;
// remove the mesh slot form the list, it culls them automatically for next frame
while((ms = bucket->GetNextActiveMeshSlot()))
{
rendertools->SetClientObject(rasty, ms->m_clientObj);
while (bucket->ActivateMaterial(cameratrans, rasty, rendertools))
bucket->RenderMeshSlot(cameratrans, rasty, rendertools, *ms);
// make this mesh slot culled automatically for next frame
// it will be culled out by frustrum culling
ms->SetCulled(true);
}
#else
list<RAS_MeshSlot>::iterator mit;
for (mit = (*bit)->msBegin(); mit != (*bit)->msEnd(); ++mit) {
if (mit->IsCulled())
continue;
rendertools->SetClientObject(rasty, mit->m_clientObj);
while ((*bit)->ActivateMaterial(cameratrans, rasty, rendertools))
(*bit)->RenderMeshSlot(cameratrans, rasty, rendertools, *mit);
// make this mesh slot culled automatically for next frame
// it will be culled out by frustrum culling
mit->SetCulled(true);
}
#endif
}
/* this code draws meshes order front-to-back instead to reduce overdraw.
* it turned out slower due to much material state switching, a more clever
* algorithm might do better. */
#if 0
vector<sortedmeshslot> slots;
vector<sortedmeshslot>::iterator sit;
OrderBuckets(cameratrans, m_SolidBuckets, slots, false);
for(sit=slots.begin(); sit!=slots.end(); ++sit) {
rendertools->SetClientObject(rasty, sit->m_ms->m_clientObj);
while(sit->m_bucket->ActivateMaterial(cameratrans, rasty, rendertools))
sit->m_bucket->RenderMeshSlot(cameratrans, rasty, rendertools, *(sit->m_ms));
}
#endif
}