bool RocketRenderingInterface::LoadTexture(TextureHandle& texture_handle, Vector2i& texture_dimensions,
const String& source)
{
GR_DEBUG_SCOPE("libRocket::LoadTexture");
SCP_string filename;
int dir_type;
if (!RocketFileInterface::getCFilePath(source, filename, dir_type)) {
return false;
}
auto period_pos = filename.rfind('.');
if (period_pos != SCP_string::npos) {
filename = filename.substr(0, period_pos);
}
auto id = bm_load_either(filename.c_str(), nullptr, nullptr, nullptr, false, dir_type);
if (id < 0) {
return false;
}
int w, h;
bm_get_info(id, &w, &h);
texture_dimensions.x = w;
texture_dimensions.y = h;
auto* tex = new Texture();
tex->handle = id;
texture_handle = get_texture_handle(tex);
return true;
}
static void handle_includes_impl(SCP_vector<SCP_string>& include_stack,
SCP_stringstream& output,
int& include_counter,
const SCP_string& filename,
const SCP_string& original) {
include_stack.emplace_back(filename);
auto current_source_number = include_counter + 1;
const char* INCLUDE_STRING = "#include";
SCP_stringstream input(original);
int line_num = 1;
for (SCP_string line; std::getline(input, line);) {
auto include_start = line.find(INCLUDE_STRING);
if (include_start != SCP_string::npos) {
auto first_quote = line.find('"', include_start + strlen(INCLUDE_STRING));
auto second_quote = line.find('"', first_quote + 1);
if (first_quote == SCP_string::npos || second_quote == SCP_string::npos) {
Error(LOCATION,
"Shader %s:%d: Malformed include line. Could not find both quote charaters.",
filename.c_str(),
line_num);
}
auto file_name = line.substr(first_quote + 1, second_quote - first_quote - 1);
auto existing_name = std::find_if(include_stack.begin(), include_stack.end(), [&file_name](const SCP_string& str) {
return str == file_name;
});
if (existing_name != include_stack.end()) {
SCP_stringstream stack_string;
for (auto& name : include_stack) {
stack_string << "\t" << name << "\n";
}
Error(LOCATION,
"Shader %s:%d: Detected cyclic include! Previous includes (top level file first):\n%s",
filename.c_str(),
line_num,
stack_string.str().c_str());
}
++include_counter;
// The second parameter defines which source string we are currently working with. We keep track of how many
// excludes have been in the file so far to specify this
output << "#line 1 " << include_counter + 1 << "\n";
handle_includes_impl(include_stack,
output,
include_counter,
file_name,
opengl_load_shader(file_name.c_str()));
// We are done with the include file so now we can return to the original file
output << "#line " << line_num + 1 << " " << current_source_number << "\n";
} else {
output << line << "\n";
}
++line_num;
}
include_stack.pop_back();
}
