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Optimized closest lights handling 

Former-commit-id: 9db6300cb2a48907e4d558e721a5f63d0c9e967c
This commit is contained in:
Lynix 2013-07-31 14:19:20 +02:00
parent efd6185f56
commit 8dba8599d2
1 changed files with 11 additions and 9 deletions
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20
src/Nazara/Graphics/ForwardRenderTechnique.cpp
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@ -25,7 +25,7 @@ namespace
LightManager() = default; LightManager() = default;
~LightManager() = default; ~LightManager() = default;
unsigned int FindClosestLights(const NzLight** lights, unsigned int lightCount, const NzSpheref& object) unsigned int FindClosestLights(const NzLight** lights, unsigned int lightCount, const NzVector3f& position, float squaredRadius)
{ {
for (Light& light : m_lights) for (Light& light : m_lights)
{ {
@ -46,21 +46,23 @@ namespace
case nzLightType_Point: case nzLightType_Point:
{ {
NzSpheref lightSphere(light->GetPosition(), light->GetRadius()); float lightRadius = light->GetRadius();
if (lightSphere.Intersect(object)) float squaredDistance = position.SquaredDistance(light->GetPosition());
score = static_cast<unsigned int>(light->GetPosition().SquaredDistance(object.GetPosition())*1000.f); if (squaredDistance - squaredRadius <= lightRadius*lightRadius)
score = static_cast<unsigned int>(squaredDistance*1000.f);
break; break;
} }
case nzLightType_Spot: case nzLightType_Spot:
{ {
NzSpheref lightSphere(light->GetPosition(), light->GetRadius()); float lightRadius = light->GetRadius();
///TODO: Attribuer bonus/malus selon l'angle du spot ? ///TODO: Attribuer bonus/malus selon l'angle du spot ?
if (lightSphere.Intersect(object)) float squaredDistance = position.SquaredDistance(light->GetPosition());
score = static_cast<unsigned int>(light->GetPosition().SquaredDistance(object.GetPosition())*1000.f); if (squaredDistance - squaredRadius <= lightRadius*lightRadius)
score = static_cast<unsigned int>(squaredDistance*1000.f);
break; break;
} }
@ -217,7 +219,7 @@ void NzForwardRenderTechnique::Draw(const NzScene* scene)
// Calcul des lumières les plus proches // Calcul des lumières les plus proches
if (lightCount < m_maxLightsPerObject && !m_renderQueue.lights.empty()) if (lightCount < m_maxLightsPerObject && !m_renderQueue.lights.empty())
{ {
unsigned int count = lightManager.FindClosestLights(&m_renderQueue.lights[0], m_renderQueue.lights.size(), data.aabb.GetBoundingSphere()); unsigned int count = lightManager.FindClosestLights(&m_renderQueue.lights[0], m_renderQueue.lights.size(), data.aabb.GetCenter(), data.aabb.GetSquaredRadius());
count -= lightCount; count -= lightCount;
for (unsigned int i = 0; i < count; ++i) for (unsigned int i = 0; i < count; ++i)
@ -300,7 +302,7 @@ void NzForwardRenderTechnique::Draw(const NzScene* scene)
// Calcul des lumières les plus proches // Calcul des lumières les plus proches
if (lightCount < m_maxLightsPerObject && !m_renderQueue.lights.empty()) if (lightCount < m_maxLightsPerObject && !m_renderQueue.lights.empty())
{ {
unsigned int count = lightManager.FindClosestLights(&m_renderQueue.lights[0], m_renderQueue.lights.size(), staticModel.aabb.GetBoundingSphere()); unsigned int count = lightManager.FindClosestLights(&m_renderQueue.lights[0], m_renderQueue.lights.size(), staticModel.aabb.GetCenter(), staticModel.aabb.GetSquaredRadius());
count -= lightCount; count -= lightCount;
for (unsigned int i = 0; i < count; ++i) for (unsigned int i = 0; i < count; ++i)