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d3d12memory: Fix staging buffer alignment

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Not all GPUs can support arbitrary offset of
D3D12_PLACED_SUBRESOURCE_FOOTPRINT when copying GPU memory between
texture and buffer. Instead of calculating size/offset per plane,
calculate the entire size and offsets at once.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6973>
This commit is contained in:
Seungha Yang 2024-05-30 01:30:58 +09:00 committed by Backport Bot
parent c305fe7a35
commit 5118e657b6
2 changed files with 16 additions and 16 deletions
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15
subprojects/gst-plugins-bad/sys/d3d12/gstd3d12bufferpool.cpp
View file

@ -194,14 +194,17 @@ gst_d3d12_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
D3D12_RESOURCE_STATE_COMMON, nullptr);
auto num_planes = D3D12GetFormatPlaneCount (device,
params->d3d12_format.dxgi_format);
for (guint i = 0; i < num_planes; i++) {
UINT64 mem_size;
device->GetCopyableFootprints (&desc[0], i, 1, 0,
&layout[i], nullptr, nullptr, &mem_size);
auto single_array_desc = desc[0];
single_array_desc.DepthOrArraySize = 1;
UINT64 mem_size;
device->GetCopyableFootprints (&single_array_desc, 0, num_planes, 0,
layout, nullptr, nullptr, &mem_size);
total_mem_size = mem_size;
for (guint i = 0; i < num_planes; i++) {
priv->stride[i] = layout[i].Footprint.RowPitch;
priv->offset[i] = total_mem_size;
total_mem_size += mem_size;
priv->offset[i] = layout[i].Offset;
}
priv->alloc[0] = alloc;

17
subprojects/gst-plugins-bad/sys/d3d12/gstd3d12memory.cpp
View file

@ -733,10 +733,7 @@ gst_d3d12_allocator_alloc_wrapped (GstD3D12Allocator * allocator,
mem->device = (GstD3D12Device *) gst_object_ref (device);
mem->priv->size = 0;
for (guint i = 0; i < num_subresources; i++) {
UINT64 size;
/* One notable difference between D3D12/D3D11 is that, D3D12 introduced
* *PLANE* slice concept. That means, Each plane of YUV format
* (e.g, DXGI_FORMAT_NV12) can be accessible in D3D12 but that wasn't
@ -753,15 +750,15 @@ gst_d3d12_allocator_alloc_wrapped (GstD3D12Allocator * allocator,
*/
mem->priv->subresource_index[i] = D3D12CalcSubresource (0,
array_slice, i, 1, desc.DepthOrArraySize);
device_handle->GetCopyableFootprints (&desc, priv->subresource_index[i],
1, 0, &priv->layout[i], nullptr, nullptr, &size);
/* Update offset manually */
priv->layout[i].Offset = priv->size;
priv->size += size;
}
/* Then calculate staging memory size and copyable layout */
UINT64 size;
desc.DepthOrArraySize = 1;
device_handle->GetCopyableFootprints (&desc, 0,
num_subresources, 0, priv->layout, nullptr, nullptr, &size);
priv->size = size;
priv->subresource_rect[0].left = 0;
priv->subresource_rect[0].top = 0;
priv->subresource_rect[0].right = (LONG) desc.Width;