Function replace_all

src/visualization/shader.cpp:36–44

namespace {

void replace_all(std::string& text,
                 const std::string_view from,
                 const std::string_view to) {
    auto pos = std::size_t{0};
    while ((pos = text.find(from, pos)) != std::string::npos) {
        text.replace(pos, from.size(), to);
        pos += to.size();
    }
}

std::string adapt_shader_source_for_gles(const GLuint type,
                                         std::string source) {