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graphics: streamline staging-buffer writes

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nmzik
2026-10-07 22:27:36 +04:00
parent 006875ed4f
commit 4d10ea17a0
2 changed files with 103 additions and 2 deletions
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src/graphics/host_gpu/renderer/cache/bufferCache.cpp
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+29 -2
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@@ -34,9 +34,36 @@ void BufferCache::WriteDataBuffer(Buffer& buffer, uint64_t address, const void*
auto* bytes = static_cast<const uint8_t*>(source);
while (size != 0) {
const auto chunk = std::min(size, m_staging_buffer.Size());
// Copy waits for ring reuse and flushes the fresh host data before submission.
const auto offset = m_staging_buffer.Copy(bytes, chunk, 4);
buffer.CopyFrom(m_scheduler.Current(), m_staging_buffer, offset, buffer.Offset(address),
chunk, vk::AccessFlagBits::eHostWrite);
const auto destination_offset = buffer.Offset(address);
EXIT_IF(destination_offset > buffer.Size() || chunk > buffer.Size() - destination_offset);
m_scheduler.EndRendering();
const auto command = m_scheduler.Current().Handle();
vk::BufferMemoryBarrier2 before {};
before.srcStageMask = vk::PipelineStageFlagBits2::eAllCommands;
before.srcAccessMask = vk::AccessFlagBits2::eMemoryRead | vk::AccessFlagBits2::eMemoryWrite;
before.dstStageMask = vk::PipelineStageFlagBits2::eTransfer;
before.dstAccessMask = vk::AccessFlagBits2::eTransferWrite;
before.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
before.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
before.buffer = buffer.Handle();
before.offset = destination_offset;
before.size = chunk;
vk::DependencyInfo dependency {};
dependency.dependencyFlags = vk::DependencyFlagBits::eByRegion;
dependency.bufferMemoryBarrierCount = 1;
dependency.pBufferMemoryBarriers = &before;
command.pipelineBarrier2(dependency);
const vk::BufferCopy copy {offset, destination_offset, chunk};
command.copyBuffer(m_staging_buffer.Handle(), buffer.Handle(), 1, &copy);
auto after = before;
after.srcStageMask = vk::PipelineStageFlagBits2::eTransfer;
after.srcAccessMask = vk::AccessFlagBits2::eTransferWrite;
after.dstStageMask = vk::PipelineStageFlagBits2::eAllCommands;
after.dstAccessMask = vk::AccessFlagBits2::eMemoryRead | vk::AccessFlagBits2::eMemoryWrite;
dependency.pBufferMemoryBarriers = &after;
command.pipelineBarrier2(dependency);
bytes += chunk;
address += chunk;
size -= chunk;