Method end_function_scope

libs/SPIRVCross/spirv_cross.cpp:2403–2448

}

bool Compiler::CombinedImageSamplerHandler::end_function_scope(const uint32_t *args, uint32_t length)
{
	if (length < 3)
		return false;

	auto &callee = compiler.get<SPIRFunction>(args[2]);
	args += 3;

	// There are two types of cases we have to handle,
	// a callee might call sampler2D(texture2D, sampler) directly where
	// one or more parameters originate from parameters.
	// Alternatively, we need to provide combined image samplers to our callees,
	// and in this case we need to add those as well.

	pop_remap_parameters();

	// Our callee has now been processed at least once.
	// No point in doing it again.
	callee.do_combined_parameters = false;

	auto &params = functions.top()->combined_parameters;
	functions.pop();
	if (functions.empty())
		return true;

	auto &caller = *functions.top();
	if (caller.do_combined_parameters)
	{
		for (auto &param : params)
		{
			VariableID image_id = param.global_image ? param.image_id : VariableID(args[param.image_id]);
			VariableID sampler_id = param.global_sampler ? param.sampler_id : VariableID(args[param.sampler_id]);

			auto *i = compiler.maybe_get_backing_variable(image_id);
			auto *s = compiler.maybe_get_backing_variable(sampler_id);
			if (i)
				image_id = i->self;
			if (s)
				sampler_id = s->self;

			register_combined_image_sampler(caller, 0, image_id, sampler_id, param.depth);
		}
	}

	return true;
}

void Compiler::CombinedImageSamplerHandler::register_combined_image_sampler(SPIRFunction &caller,
                                                                            VariableID combined_module_id,