本文整理汇总了C++中Patch::GenerateIndices方法的典型用法代码示例。如果您正苦于以下问题：C++ Patch::GenerateIndices方法的具体用法？C++ Patch::GenerateIndices怎么用？C++ Patch::GenerateIndices使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Patch的用法示例。
在下文中一共展示了Patch::GenerateIndices方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Update
/**
* Retessellates the current terrain
*/
void CRoamMeshDrawer::Update()
{
//FIXME this retessellates with the current camera frustum, shadow pass and others don't have to see the same patches!
//const CCamera* cam = (inShadowPass)? camera: cam2;
CCamera* cam = cam2;
// Update Patch visibility
Patch::UpdateVisibility(cam, m_Patches, numPatchesX);
// Check if a retessellation is needed
#define RETESSELLATE_MODE 1
bool retessellate = false;
{ //SCOPED_TIMER("ROAM::ComputeVariance");
for (int i = 0; i < (numPatchesX * numPatchesY); ++i) {
Patch& p = m_Patches[i];
#if (RETESSELLATE_MODE == 2)
if (p.IsVisible()) {
if (!visibilitygrid[i]) {
visibilitygrid[i] = true;
retessellate = true;
}
if (p.IsDirty()) {
//FIXME don't retessellate on small heightmap changes?
p.ComputeVariance();
retessellate = true;
}
} else {
visibilitygrid[i] = false;
}
#else
if (p.IsVisible() != visibilitygrid[i]) {
visibilitygrid[i] = p.IsVisible();
retessellate = true;
}
if (p.IsVisible() && p.IsDirty()) {
//FIXME don't retessellate on small heightmap changes?
p.ComputeVariance();
retessellate = true;
}
#endif
}
}
// Further conditions that can cause a retessellation
#if (RETESSELLATE_MODE == 2)
static const float maxCamDeltaDistSq = 500.0f * 500.0f;
retessellate |= ((cam->pos - lastCamPos).SqLength() > maxCamDeltaDistSq);
#endif
retessellate |= forceRetessellate;
retessellate |= (lastGroundDetail != smfGroundDrawer->GetGroundDetail());
// Retessellate
if (retessellate) {
{ //SCOPED_TIMER("ROAM::Tessellate");
//FIXME this tessellates with current camera + viewRadius
// so it doesn't retessellate patches that are e.g. only vis. in the shadow frustum
Reset();
Tessellate(cam->pos, smfGroundDrawer->GetGroundDetail());
}
{ //SCOPED_TIMER("ROAM::GenerateIndexArray");
#pragma omp parallel for
for (int i = m_Patches.size() - 1; i >= 0; --i) {
Patch* it = &m_Patches[i];
if (it->IsVisible()) {
it->GenerateIndices();
}
}
}
{ //SCOPED_TIMER("ROAM::Upload");
for (std::vector<Patch>::iterator it = m_Patches.begin(); it != m_Patches.end(); ++it) {
if (it->IsVisible()) {
it->Upload();
}
}
}
/*{
int tricount = 0;
for (std::vector<Patch>::iterator it = m_Patches.begin(); it != m_Patches.end(); it++) {
if (it->IsVisible()) {
tricount += it->GetTriCount();
}
}
LOG_L(L_DEBUG, "ROAM dbg: Framechange, fram=%i tris=%i, viewrad=%i, cd=%f, camera=(%5.0f, %5.0f, %5.0f) camera2= (%5.0f, %5.0f, %5.0f)",
globalRendering->drawFrame,
tricount,
smfGroundDrawer->viewRadius,
(cam->pos - lastCamPos).SqLength();,
camera->pos.x,
camera->pos.y,
camera->pos.z,
cam2->pos.x,
cam2->pos.y,
//.........这里部分代码省略.........