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#include "chunk.hpp"
namespace Magnum::Examples {
chunk_sampler_array::chunk_sampler_array()
{
samplers.reserve(MAX_SAMPLERS);
samplers.push_back(nullptr);
}
void chunk_sampler_array::ensure_sampler(std::size_t tile_id, const shared_sampler& x)
{
CORRADE_INTERNAL_ASSERT(x != nullptr);
CORRADE_INTERNAL_ASSERT(tile_id < TILE_COUNT);
if (std::size_t id = sampler_map[tile_id]; id != 0)
{
const shared_sampler& old_sampler = samplers[id];
if (x == old_sampler)
return;
}
CORRADE_INTERNAL_ASSERT(samplers.size() < MAX_SAMPLERS);
const auto id = (std::uint8_t)samplers.size();
samplers.push_back(x);
sampler_map[tile_id] = id;
}
void chunk_sampler_array::clear()
{
Magnum::GL::AbstractTexture::unbindImages(0, samplers.size());
samplers.clear();
samplers.push_back(nullptr);
sampler_map = {};
}
void chunk_sampler_array::bind()
{
Magnum::GL::AbstractTexture::unbindImages(0, MAX_SAMPLERS);
for (std::size_t i = 1; i < samplers.size(); i++)
samplers[i]->texture().bind((int)i);
}
std::shared_ptr<tile_atlas> chunk_sampler_array::operator[](std::size_t tile_id) const
{
CORRADE_INTERNAL_ASSERT(tile_id < TILE_COUNT);
std::size_t sampler_id = sampler_map[tile_id];
CORRADE_INTERNAL_ASSERT(sampler_id != 0);
CORRADE_INTERNAL_ASSERT(sampler_id < samplers.size());
const auto& sampler = samplers[sampler_id];
CORRADE_INTERNAL_ASSERT(sampler != nullptr);
return sampler;
}
} // namespace Magnum::Examples
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