diff options
| -rw-r--r-- | src/gui/rhi/qrhimetal.mm | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/gui/rhi/qrhimetal.mm b/src/gui/rhi/qrhimetal.mm index ffb2283ae7..b7cc1da3fe 100644 --- a/src/gui/rhi/qrhimetal.mm +++ b/src/gui/rhi/qrhimetal.mm @@ -1986,9 +1986,11 @@ bool QMetalBuffer::build() } #endif - // Immutable and Static only has buf[0] and pendingUpdates[0] in use. - // Dynamic uses all. - d->slotted = m_type == Dynamic; + // Have QMTL_FRAMES_IN_FLIGHT versions regardless of the type, for now. + // This is because writing to a Managed buffer (which is what Immutable and + // Static maps to on macOS) is not safe when another frame reading from the + // same buffer is still in flight. + d->slotted = !m_usage.testFlag(QRhiBuffer::StorageBuffer); // except for SSBOs written in the shader QRHI_RES_RHI(QRhiMetal); for (int i = 0; i < QMTL_FRAMES_IN_FLIGHT; ++i) { |