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Sort drawing based on nodes surface area

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This commit is contained in:
Benau 2022-07-28 15:48:06 +08:00
parent e9d3152c1a
commit c2c8468fa8
1 changed files with 36 additions and 1 deletions
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37
lib/graphics_engine/src/ge_vulkan_draw_call.cpp
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@ -16,6 +16,7 @@
#include "ge_vulkan_texture_descriptor.hpp"
#include <algorithm>
#include <limits>
namespace GE
{
@ -137,8 +138,42 @@ void GEVulkanDrawCall::generate()
m_skinning_data_padded_size += bone_size;
}
unsigned accumulated_instance = 0;
using Nodes = std::pair<GESPMBuffer*, std::unordered_map<
std::string, std::vector<std::pair<irr::scene::ISceneNode*, unsigned
> > > >;
std::vector<Nodes> visible_nodes;
for (auto& p : m_visible_nodes)
visible_nodes.emplace_back(p.first, std::move(p.second));
std::unordered_map<GESPMBuffer*, float> nodes_area;
for (auto& p : visible_nodes)
{
if (p.second.empty())
{
nodes_area[p.first] = std::numeric_limits<float>::max();
continue;
}
for (auto& q : p.second)
{
if (q.second.empty())
{
nodes_area[p.first] = std::numeric_limits<float>::max();
continue;
}
irr::core::aabbox3df bb = p.first->getBoundingBox();
q.second[0].first->getAbsoluteTransformation().transformBoxEx(bb);
nodes_area[p.first] = bb.getArea() * (float)q.second.size();
break;
}
}
std::sort(visible_nodes.begin(), visible_nodes.end(),
[&nodes_area](const Nodes& a, const Nodes& b)
{
return nodes_area.at(a.first) < nodes_area.at(b.first) ;
});
unsigned accumulated_instance = 0;
for (auto& p : visible_nodes)
{
irr::video::SMaterial& m = p.first->getMaterial();
std::array<const irr::video::ITexture*, 8> textures =