flush_push_constant()

void MayaFlux::Buffers::FormaBindingsProcessor::flush_push_constant ( const std::string &  name, float  value, const PushConstantTarget &  pc, const std::shared_ptr< VKBuffer > &  buffer  )

private

Definition at line 240 of file FormaBindingsProcessor.cpp.

{
    auto& entries = buffer->get_pipeline_context().push_constant_bindings;
 
    auto it = std::ranges::find_if(entries, [&](const auto& e) {
        return e.offset == pc.offset;
    });
 
    if (it == entries.end()) {
        entries.push_back(Portal::Graphics::PushConstantBindingInfo {
            .offset = pc.offset,
            .data = std::vector<uint8_t>(pc.size),
            .name = name });
        it = std::prev(entries.end());
    }
 
    if (pc.format) {
        const bool packed = Kakshya::pack_gpu_value(*pc.format, value,
            std::span<std::byte>(reinterpret_cast<std::byte*>(it->data.data()), it->data.size()));
        if (!packed) {
            MF_RT_WARN(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                "FormaBindingsProcessor: binding '{}' does not fit its push constant slot", name);
        }
    } else if (pc.size == sizeof(float)) {
        std::memcpy(it->data.data(), &value, sizeof(float));
    } else if (pc.size == sizeof(double)) {
        auto promoted = static_cast<double>(value);
        std::memcpy(it->data.data(), &promoted, sizeof(double));
    }
 
    MF_RT_DEBUG(Journal::Component::Buffers, Journal::Context::BufferProcessing,
        "FormaBindingsProcessor: PC write offset={} value={}", pc.offset, value);
}

References buffer, MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, MayaFlux::Buffers::FormaBindingsProcessor::PushConstantTarget::format, MF_RT_DEBUG, MF_RT_WARN, name, MayaFlux::Buffers::FormaBindingsProcessor::PushConstantTarget::offset, MayaFlux::Portal::Graphics::PushConstantBindingInfo::offset, MayaFlux::Kakshya::pack_gpu_value(), MayaFlux::Buffers::FormaBindingsProcessor::PushConstantTarget::size, and value.

Referenced by execute_shader().

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