ensure_shared_buffer()

void MayaFlux::Yantra::GpuResourceManager::ensure_shared_buffer	(	uint32_t	set,
		size_t	binding_index,
		size_t	element_count,
		GpuBufferBinding::ElementType	element_type,
		Portal::Graphics::BufferUsageHint	usage_hint = Portal::Graphics::BufferUsageHint::COMPUTE_STORAGE
	)

Definition at line 437 of file GpuResourceManager.cpp.

{
    const size_t width = Portal::Graphics::element_type_bytes(element_type);
    if (width == 0) {
        error<std::runtime_error>(
            Journal::Component::Yantra,
            Journal::Context::BufferProcessing,
            std::source_location::current(),
            "GpuResourceManager: ensure_shared_buffer requires a sized element_type");
    }
 
    auto& slot = m_shared->slots[{ set, binding_index }];
    const size_t required_bytes = element_count * width;
    if (slot.allocated_bytes >= required_bytes)
        return;
 
    auto& foundry = Portal::Graphics::get_shader_foundry();
    const bool gpu_resident = usage_hint == Portal::Graphics::BufferUsageHint::DEVICE
        || usage_hint == Portal::Graphics::BufferUsageHint::COMPUTE;
    allocate_slot(foundry.get_device(), foundry.get_physical_device(),
        slot, required_bytes, Portal::Graphics::to_buffer_usage_flags(usage_hint), gpu_resident);
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Portal::Graphics::COMPUTE, MayaFlux::Portal::Graphics::DEVICE, MayaFlux::Portal::Graphics::element_type_bytes(), MayaFlux::Portal::Graphics::get_shader_foundry(), m_shared, MayaFlux::Portal::Graphics::to_buffer_usage_flags(), width, and MayaFlux::Journal::Yantra.

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