Do not take a transfer and do the memcpy. Add a _buffer suffix to
the function name to make it clear that it is only for buffers.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
COMPLETED_LIST is always empty. We only need one list.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Now that virgl_transfer_queue_is_queued does not search
COMPLETED_LIST, we don't need to move transfers to that list.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Search only the pending list and return immediately on the first
hit.
When the transfer queue was introduced, the function was used to
deal with
write transfer -> draw -> write transfer
sequence. It was used to tell if the second transfer intersects
with the first transfer. If yes, the transfer queue avoided
reordering the second transfer to before the draw (by flushing) in
case the draw uses the transferred data.
With the recent changes to the transfer code, the function is used
to deal with
write transfer -> readback transfer
We want to avoid reordering the readback transfer to before the
first transfer (also by flushing).
In the old code, we needed to track the compeleted transfers as well
to avoid reordering. But in the new code, a readback transfer is
guaranteed to see the data from the completed transfers (in other
words, it cannot be reoderered to before the already completed
transfers). We don't need to search the COMPLETED_LIST.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
We never use transfers_intersect with textures, but fix it anyway to
avoid confusion.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Rewrite the function and check z/depth more carefully. We
intentionally avoid u_box_test_intersection_2d because it returns
true when two boxes touch but do not intersect and can be confusing.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Store the virgl_hw_res instead of the pipe_resource for copy transfer
sources. This prepares the codebase for a change to provide only the
virgl_hw_res for the staging buffers in upcoming commits.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
When PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE is properly supported,
virgl_transfer might refer to a different virgl_hw_res than
virgl_resource does. We need to save the virgl_hw_res and use the
saved one.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
We should avoid having potentially dangling pointers to
pipe_resources in general.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
A pipe_transfer is a context object. It is fine for the
constructor/destructor to have access to the context.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
A pipe_transfer is a context object. It is fine for
virgl_transfer_queue to have access to the context.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
We typically need to wait for a buffer to become ready before mapping,
so that we don't write new contents while the host is still using the
old contents. However, if we are allowed to discard the contents of the
mapped buffer range, then we can avoid waiting by using a staging buffer
range which we guarantee to never be busy, copying from the staging
buffer range to the target buffer in the host.
This commit implements this optimization by utilizing a dedicated
u_upload_mgr for the staging buffer.
Performance results:
Twilight Struggle (Steam/Proton), qemu before: 7 FPS after: 25 FPS
glmark2 ubo, qemu before: 38 FPS after: 331 FPS
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Suggested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Support transfers that use a different resource as the source of data to
transfer. This will be used in upcoming commits to send data to host
buffers through a transfer upload buffer, in order to avoid waiting
when the buffer resource is busy.
Note that we don't support queueing copy transfers in the transfer
queue. Copy transfers should be emitted directly in the command queue,
allowing us to avoid flushes before them and leads to better
performance.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Intersecting transfer queue entries allow for the possibility of
extending an existing transfer instead of creating a new one (and all
the associated mappign/unmapping).
Signed-off-by: David Riley <davidriley@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
It does not need help from the driver. This also fixes one issue where
the fence is ignored when the transfer queue is full.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Transfers will be placed here at unmap time instead of incurring
a VM exit. There's an attempt to deduplicate intersecting 1D transfers,
which are surprisingly common.
This can also help with mipmapped texture upload and smaller
textures, where the majority of the time is spent in the guest
kernel / QEMU -- not virglrenderer. This is shown by the GLbench
texture upload benchmark:
Before:
texture_upload_rgba_teximage2d_32 = 64.23 mtexel_sec
After:
texture_upload_rgba_teximage2d_32 = 367.44 mtexel_sec
v2: Split up list iteration functions (@gerddie)
v3: Support for optimizing glBufferSubData
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Chia-I Wu
Alexandros Frantzis
David Riley
Gurchetan Singh