ilikecats/stk-code_catmod
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Factorize culling code.

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This commit is contained in:
vlj 2014-09-06 15:03:24 +02:00
parent d625bb23cc
commit 4f60c1b753
1 changed files with 46 additions and 6 deletions
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52
src/graphics/stkscenemanager.cpp
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@ -16,6 +16,7 @@
#include "lod_node.hpp"
#include "utils/profiler.hpp"
#include <unordered_map>
#include <SViewFrustum.h>
static void
FillInstances_impl(std::vector<std::pair<GLMesh *, scene::ISceneNode *> > InstanceList, InstanceData * InstanceBuffer, DrawElementsIndirectCommand *CommandBuffer,
@ -128,6 +129,48 @@ static std::vector <STKMeshCommon *> DeferredUpdate;
static core::vector3df windDir;
// From irrlicht code
static
bool isBoxInFrontOfPlane(const core::plane3df &plane, const core::vector3df edges[8])
{
for (u32 j = 0; j<8; ++j)
if (plane.classifyPointRelation(edges[j]) != core::ISREL3D_FRONT)
return true;
return false;
}
static
bool isCulled(const scene::ICameraSceneNode *cam, const scene::ISceneNode *node)
{
// can be seen by a bounding box ?
if (node->getAutomaticCulling() & scene::EAC_BOX)
{
core::aabbox3d<f32> tbox = node->getBoundingBox();
node->getAbsoluteTransformation().transformBoxEx(tbox);
return !(tbox.intersectsWithBox(cam->getViewFrustum()->getBoundingBox()));
}
// can be seen by cam pyramid planes ?
if (node->getAutomaticCulling() & scene::EAC_FRUSTUM_BOX)
{
scene::SViewFrustum frust = *cam->getViewFrustum();
//transform the frustum to the node's current absolute transformation
core::matrix4 invTrans(node->getAbsoluteTransformation(), core::matrix4::EM4CONST_INVERSE);
//invTrans.makeInverse();
frust.transform(invTrans);
core::vector3df edges[8];
node->getBoundingBox().getEdges(edges);
for (s32 i = 0; i < scene::SViewFrustum::VF_PLANE_COUNT; ++i)
if (isBoxInFrontOfPlane(frust.planes[i], edges))
return true;
return false;
}
return false;
}
static void
handleSTKCommon(scene::ISceneNode *Node, std::vector<scene::ISceneNode *> *ImmediateDraw, bool IsCulledForSolid, bool IsCulledForShadow[4], bool IsCulledForRSM)
{
@ -359,16 +402,13 @@ parseSceneManager(core::list<scene::ISceneNode*> List, std::vector<scene::IScene
continue;
(*I)->updateAbsolutePosition();
core::aabbox3d<f32> tbox = (*I)->getBoundingBox();
(*I)->getAbsoluteTransformation().transformBoxEx(tbox);
bool IsCulledForSolid = !(tbox.intersectsWithBox(cam->getViewFrustum()->getBoundingBox()));
bool IsCulledForSolid = isCulled(cam, *I);
bool IsCulledForShadow[4];
for (unsigned i = 0; i < 4; ++i)
IsCulledForShadow[i] = !(tbox.intersectsWithBox(shadowCams[i]->getViewFrustum()->getBoundingBox()));
IsCulledForShadow[i] = isCulled(shadowCams[i], *I);
bool IsCulledForRSM = !(tbox.intersectsWithBox(RSM_cam->getViewFrustum()->getBoundingBox()));
bool IsCulledForRSM = isCulled(RSM_cam, *I);
if (!IsCulledForSolid)
{