Method get_variant

libraries/lib-engine/src/shader.cpp:120–136

}

std::shared_ptr<shader_variant> gl_shader_asset::get_variant(const std::vector<std::string> defines)
{
    // Hash the defines
    uint64_t theHash = hash(defines);

    // Lookup if exists
    auto itr = shaders.find(theHash);
    if (itr != shaders.end()) return itr->second;

    // Create if not
    auto newVariant = std::make_shared<shader_variant>();
    newVariant->shader = std::move(compile_variant(defines));
    newVariant->defines = defines;
    newVariant->hash = theHash;
    shaders[theHash] = newVariant;
    return newVariant;
}

gl_shader & gl_shader_asset::get()
{