write() [7/12]

void MayaFlux::Portal::Forma::Bridge::write	(	uint32_t	id,
		const std::shared_ptr< Buffers::VKBuffer > &	target_buffer,
		const std::string &	shader_path,
		const std::string &	descriptor_name,
		uint32_t	binding_index,
		uint32_t	set,
		Portal::Graphics::DescriptorRole	role = Portal::Graphics::DescriptorRole::UNIFORM
	)

Route element value to a descriptor binding on target_buffer.

Creates a FormaBindingsProcessor if one does not yet exist for this element and attaches it to target_buffer. If a processor already exists from a prior write() call, target_buffer must be the same buffer — a second attachment is not made.

Parameters

id	Element id.
target_buffer	Buffer whose pipeline context receives the descriptor update.
shader_path	Shader path used to construct FormaBindingsProcessor if needed.
descriptor_name	Descriptor name in the shader config.
binding_index	Vulkan binding index.
set	Descriptor set index.
role	UNIFORM or STORAGE.

Definition at line 120 of file Bridge.cpp.

{
    auto it = m_records.find(id);
    if (it == m_records.end()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Init,
            "Bridge::write: unknown element id {}", id);
        return;
    }
 
    auto& rec = it->second;
    if (!rec.bindings) {
        rec.bindings = std::make_shared<Buffers::FormaBindingsProcessor>(shader_path);
        m_buffer_manager.add_processor(rec.bindings, target_buffer,
            Buffers::ProcessingToken::GRAPHICS_BACKEND);
    }
 
    rec.bindings->bind_descriptor(
        descriptor_name + "_" + std::to_string(id),
        rec.reader,
        descriptor_name,
        binding_index, set, role);
}

References MayaFlux::Buffers::BufferManager::add_processor(), MayaFlux::Buffers::GRAPHICS_BACKEND, MayaFlux::Journal::Init, m_buffer_manager, m_records, MF_ERROR, and MayaFlux::Journal::Portal.

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