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Ensure the LOD multiplier is applied before the quality limiter

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Alayan 2024-05-13 22:31:05 +02:00
parent 10943ac0ff
commit 91d3bceb03
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2 changed files with 12 additions and 10 deletions
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19
src/graphics/lod_node.cpp
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@ -52,6 +52,7 @@ LODNode::LODNode(std::string group_name, scene::ISceneNode* parent,
m_current_level = -1;
m_current_level_dirty = true;
m_lod_distances_updated = false;
m_min_switch_distance = 0;
}
LODNode::~LODNode()
@ -99,7 +100,12 @@ int LODNode::getLevel()
// The LoD levels are ordered from highest quality to lowest
for (unsigned int n=0; n<m_detail.size(); n++)
{
if (squared_dist < m_detail[n])
// Display this level if close enough.
// If a high-level of detail would only be triggered from too close,
// and there are lower levels available, skip it completely.
// It's better to display a low level than to have the high-level pop suddenly.
if (squared_dist < m_detail[n] &&
((n + 1 >= m_detail.size()) || (m_min_switch_distance < m_detail[n])))
{
m_current_level = n;
return n;
@ -220,7 +226,7 @@ void LODNode::autoComputeLevel(float scale)
float max_draw = p4_ratio * p4_component + (1.0f - p4_ratio) * p2_component;
float max_quality_switch_dist = 90;
float m_min_switch_dist = 90;
// Step 2 - Distance multiplier based on the user's input
float aggressivity = 1.0;
@ -237,7 +243,7 @@ void LODNode::autoComputeLevel(float scale)
// we compare the distance saved in the LoD node with the square of the distance
// between the camera and the object. Therefore, we apply squaring here.
max_draw *= max_draw;
max_quality_switch_dist *= max_quality_switch_dist;
m_min_switch_dist *= m_min_switch_dist;
int step = (int) (max_draw) / m_detail.size();
int biais = m_detail.size();
@ -251,13 +257,6 @@ void LODNode::autoComputeLevel(float scale)
// TODO - investigate a better division scheme
m_detail[i] = ((step / biais) * (i + 1));
biais--;
// Step 5 - If a high-level of detail would only be triggered from too close,
// and there are lower levels available, skip it completely.
// It's better to display a low level than to have the high-level pop
// suddenly when already quite close.
if(m_detail[i] < max_quality_switch_dist && (i + 1) < m_detail.size())
m_detail[i] = -1.0f;
}
const size_t max_level = m_detail.size() - 1;

3
src/graphics/lod_node.hpp
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@ -66,6 +66,9 @@ private:
int m_current_level;
bool m_current_level_dirty;
// Distance below which switching between two levels of detail is avoided
int m_min_switch_distance;
// Area of the bounding box (for autoLOD computation)
float m_area;