void LightManager::updateLights(bool const cullVisible)
{
std::vector<LightSource*> visibleLights;
getVisibleLights(visibleLights, cullVisible);
buildGPUBuffer(static_cast<uint32_t>(visibleLights.size())); // Builds a new buffer if current is NULL or too small
fillGPUBuffer(visibleLights); // Also performs the binding operation
m_PrevNumVisible = static_cast<uint32_t>(visibleLights.size());
}
void LightManager::loadLights()
{
const std::vector<Light *> &lights = getVisibleLights();
for(unsigned int i=0;i<maxLights; ++i)
{
if(lights.size()>i)
{
const Light *light = lights[i];
glUniform1i(lightsInfo[i].isExistLoc, true);
glUniform1i(lightsInfo[i].produceShadowLoc, light->isProduceShadow());
glUniform1i(lightsInfo[i].hasParallelBeamsLoc, light->hasParallelBeams());
if(lights[i]->getLightType()==Light::SUN)
{
const SunLight *sunLight = static_cast<const SunLight *>(light);
glUniform3fv(lightsInfo[i].positionOrDirectionLoc, 1, (const float *)sunLight->getDirections()[0]);
}else if(lights[i]->getLightType()==Light::OMNIDIRECTIONAL)
{
const OmnidirectionalLight *omnidirectionalLight = static_cast<const OmnidirectionalLight *>(light);
glUniform3fv(lightsInfo[i].positionOrDirectionLoc, 1, (const float *)omnidirectionalLight->getPosition());
glUniform1f(lightsInfo[i].exponentialAttLoc, omnidirectionalLight->getExponentialAttenuation());
}else
{
throw std::invalid_argument("Unknown light type to load uniform: " + light->getLightType());
}
glUniform3fv(lightsInfo[i].lightAmbientLoc, 1, (const float *)light->getAmbientColor());
}else
{
glUniform1i(lightsInfo[i].isExistLoc, false);
break;
}
}
glUniform4fv(globalAmbientColorLoc, 1, (const float *)getGlobalAmbientColor());
}
