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LightOptim
Author | SHA1 | Date | |
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0934373fca | ||
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5aa342ba30 |
@ -40,6 +40,7 @@ LightNode::LightNode(scene::ISceneManager* mgr, scene::ISceneNode* parent, float
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m_energy = e;
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m_radius = d;
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m_energy_multiplier = 1.0f;
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m_radius_multiplier = 1.0f;
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m_color[0] = r;
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m_color[1] = g;
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m_color[2] = b;
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@ -55,7 +55,7 @@ public:
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virtual u32 getMaterialCount() const OVERRIDE { return 1; }
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virtual bool isPointLight() { return true; }
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float getRadius() const { return m_radius; }
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float getRadius() const { return m_radius * m_radius_multiplier; }
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float getEnergy() const { return m_energy; }
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float getEffectiveEnergy() const { return m_energy_multiplier * m_energy; }
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core::vector3df getColor() const { return core::vector3df(m_color[0], m_color[1], m_color[2]); }
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@ -64,6 +64,10 @@ public:
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float getEnergyMultiplier() const { return m_energy_multiplier; }
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void setEnergyMultiplier(float newval) { m_energy_multiplier = newval; }
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float getRadiusMultiplier() const { return m_radius_multiplier; }
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void setRadiusMultiplier(float newval) { m_radius_multiplier = newval; }
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// For the debug menu
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void setEnergy(float energy) { m_energy = energy; }
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void setRadius(float radius) { m_radius = radius; }
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@ -77,6 +81,8 @@ protected:
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/// The energy multiplier is in range [0, 1] and is used to fade in lights when they come in range
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float m_energy_multiplier;
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float m_radius_multiplier;
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};
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#endif
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@ -335,6 +335,8 @@ unsigned IrrDriver::updateLightsInfo(scene::ICameraSceneNode * const camnode,
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{
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const u32 lightcount = (u32)m_lights.size();
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const core::vector3df &campos = camnode->getAbsolutePosition();
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const core::vector3df cam_heading = (camnode->getTarget() - campos).normalize();
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//Vec3 heading(sin(m_kart->getHeading()), 0.0f, cos(m_kart->getHeading()));
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std::vector<LightNode *> BucketedLN[15];
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for (unsigned int i = 0; i < lightcount; i++)
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@ -347,12 +349,97 @@ unsigned IrrDriver::updateLightsInfo(scene::ICameraSceneNode * const camnode,
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m_lights[i]->render();
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continue;
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}
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const core::vector3df &lightpos =
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core::vector3df light_cam_vector =
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(m_lights[i]->getAbsolutePosition() - campos);
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unsigned idx = (unsigned)(lightpos.getLength() / 10);
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float length = light_cam_vector.getLength();
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light_cam_vector.normalize();
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float dotProduct = light_cam_vector.dotProduct(cam_heading);
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unsigned idx = (unsigned)(length / 12);
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float target_radius_multiplier = 1.0f;
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// Lights behind the camera or to the side should be moved to further buckets,
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// lights straight ahead of the camera deserve a better chance of being in
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// the first buckets
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// Lights that are completely behind the kart should be fully culled, unless they are
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// very close (then they could still have visible effects nearby)
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// TODO: all of these numbers are very, very arbitrary and approximate, find a cleaner way?
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if (length > 150.0f)
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{
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if (dotProduct < 0.5f)
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continue; // light is behind kart or to the side, ignore
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else
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target_radius_multiplier = 0.2f;
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}
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else if (length > 40.0f)
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{
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if (dotProduct < -0.2f)
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{
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continue; // light is behind kart or to the side, ignore
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}
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else if (dotProduct < 0.0f)
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{
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idx += 2;
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target_radius_multiplier = 0.5f;
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}
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else if (dotProduct < 0.25f)
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{
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idx += 1; // light is a bit to the side, move back in render priorities
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target_radius_multiplier = 0.5f;
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}
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}
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else
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{
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if (dotProduct < 0.1f)
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{
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idx += 1; // light is a bit to the side or behind, move back in render priorities
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target_radius_multiplier = 0.5f;
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}
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}
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if (dotProduct > 0.8f && idx > 0)
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{
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if (idx > 0)
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idx = 0;
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}
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else if (dotProduct > 0.6f)
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{
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if (idx > 0)
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idx -= 1;
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}
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if (length < 50.0f && dotProduct > -0.2f)
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{
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if (idx > 0)
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idx -= 1;
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}
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if (length > 200.0f && target_radius_multiplier > 0.2f)
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{
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target_radius_multiplier = 0.2f;
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}
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else if (length > 100.0f && target_radius_multiplier > 0.5f)
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{
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target_radius_multiplier = 0.5f;
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}
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if (idx > 14)
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idx = 14;
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BucketedLN[idx].push_back(m_lights[i]);
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float curr_multiplier = m_lights[i]->getRadiusMultiplier();
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if (curr_multiplier < target_radius_multiplier)
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{
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m_lights[i]->setRadiusMultiplier(std::min(curr_multiplier + dt, target_radius_multiplier));
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}
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else if (curr_multiplier > target_radius_multiplier)
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{
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m_lights[i]->setRadiusMultiplier(std::max(curr_multiplier - dt, target_radius_multiplier));
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}
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//m_lights[i]->setRadiusMultiplier(target_radius_multiplier);
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}
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unsigned lightnum = 0;
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@ -362,14 +449,31 @@ unsigned IrrDriver::updateLightsInfo(scene::ICameraSceneNode * const camnode,
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{
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for (unsigned j = 0; j < BucketedLN[i].size(); j++)
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{
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LightNode* light_node = BucketedLN[i].at(j);
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/*
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if (i == 0)
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light_node->setColor(1.0f, 0.0f, 0.0f);
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else if (i == 1)
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light_node->setColor(1.0f, 0.0f, 1.0f);
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else if (i == 2)
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light_node->setColor(0.0f, 0.0f, 1.0f);
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else if (i == 3)
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light_node->setColor(0.0f, 1.0f, 1.0f);
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else if (i == 4)
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light_node->setColor(0.0f, 1.0f, 0.0f);
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else
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light_node->setColor(1.0f, 1.0f, 0.0f);
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*/
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if (++lightnum >= LightBaseClass::MAXLIGHT)
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{
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LightNode* light_node = BucketedLN[i].at(j);
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//LightNode* light_node = BucketedLN[i].at(j);
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light_node->setEnergyMultiplier(0.0f);
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}
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else
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{
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LightNode* light_node = BucketedLN[i].at(j);
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//LightNode* light_node = BucketedLN[i].at(j);
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float em = light_node->getEnergyMultiplier();
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if (em < 1.0f)
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@ -395,8 +499,8 @@ unsigned IrrDriver::updateLightsInfo(scene::ICameraSceneNode * const camnode,
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m_point_lights_info[lightnum].green = col.Y;
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m_point_lights_info[lightnum].blue = col.Z;
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// Light radius
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m_point_lights_info[lightnum].radius = light_node->getRadius();
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float radius = light_node->getRadius();
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m_point_lights_info[lightnum].radius = radius;
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}
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}
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if (lightnum > LightBaseClass::MAXLIGHT)
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