-
Bug
-
Resolution: Fixed
-
P2: Important
-
6.7.3, 6.9.1
-
None
-
macOS,
Windows
-
5860933a6 (dev), dc73b80e2 (6.10), 35bf60eff (6.9)
updating a QRhiBuffer via QRhiResourceUpdateBatch::updateDynamicBuffer
std::unique_ptr<QRhiBuffer> buffer(rhi->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 1024)); for (int k = 0; k < 10000000; k++) { auto ru = renderer.resourceUpdateBatch(); for (int i = 0; i < 10; i++) { ru->updateDynamicBuffer(buffer.get(), 0, sizeof(int), &i); ru->updateDynamicBuffer(buffer.get(), 256, sizeof(int), &i); ru->updateDynamicBuffer(buffer.get(), 512, sizeof(int), &i); } renderer.enqueueResourceUpdateBatch(); }
and then submitting these updates via `beginOffscreenFrame`
void Renderer::enqueueResourceUpdateBatch() {
QRhiCommandBuffer* cb;
rhi->beginOffscreenFrame(&cb);
cb->resourceUpdate(m_currentResourceUpdateBatch);
rhi->endOffscreenFrame();
}
Leads to a memory leak.
The problem seems to come from `QRhiResourceUpdateBatchPrivate::BufferOp::changeToDynamicUpdate` which call `op->data.assign` where `d->ref == 3`. I don't know what is keep some refs which cause this memory leak !