They're not supported yet so let's not pretend they are.
In particular use_local_buffers can cause VM_ALWAYS_VALID to be
used, which then prevents the creation of a dmabuf.
Acked-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21658>
Native context support is implemented by diverting the libdrm_amdgpu functions
into new functions that use virtio-gpu.
VA allocations are done directly in the guest, using newly exposed libdrm_amdgpu
helpers (retrieved through dlopen/dlsym).
Guest <-> Host roundtrips can be expensive so we try to avoid them as much as
possible. When possible we also don't wait for the host reply in case where
it's not needed to get correct result.
Implicit sync works because virtio-gpu commands are submitted in order to the
host (there a single queue per device, shared by all the guest processes).
virtio-gpu also only supports one context per file description (but multiple
file descriptions per process) while amdgpu only allows one fd per process,
but multiple contexts per fd. This causes synchronization problems, because
virtio-gpu drops all sync primitive if they belong to the same fd/context/ring:
ie the amdgpu_ctx can't be expressed in virtio-gpu terms.
For now the solution is to only allocate a single amdgpu_ctx per application.
Contrary to radeonsi/radv, amdgpu_virtio can use libdrm_amdgpu directly: the
ones that don't rely on ioctl() are safe to use here.
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21658>
This is required to implement virtio native-context.
In a virtualized environment, most of the functions provided
by libdrm_amdgpu will be implemented using virtio.
This allows to implement efficient virtualization, by
forwarding the kernel API to the host, instead of the GL/VK calls.
Similarly, the raw 'fd' or 'gem_handle' arguments are replaced
by opaque types. This allows to encapsulate all the needed
state in the handle, and use unmodified API between baremetal
and virtualized contexts.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21658>
This should be faster than 32_ABGR.
Also, stencil exports are changed from UINT16_ABGR to 32_GR,
which should have no effect on performance.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33046>
It's split into ac_nir_lower_ps_early ac_nir_lower_ps_late.
ac_nir_lower_ps_early doesn't generate any AMD specific intrinsics except
some system values and is mainly an optimization pass with some lowering.
The new change here is that it also eliminates output components not needed
by spi_shader_col_format.
ac_nir_lower_ps_late lowers output stores to exports and does the bc_optimize
thing.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32966>
If there is a 4-byte hole between 2 loads, they are vectorized. Example:
load 4 + hole 4 + load 8 -> load 16
This helps GLSL uniform loads, which are often sparse. See the code for more
info.
RADV could get better code by vectorizing later.
radeonsi+ACO - TOTALS FROM AFFECTED SHADERS (45482/58355)
Spilled SGPRs: 841 -> 747 (-11.18 %)
Code Size: 67552396 -> 65291092 (-3.35 %) bytes
Max Waves: 714439 -> 714520 (0.01 %)
This should have no effect on LLVM because ac_build_buffer_load scalarizes
SMEM, but it's improved for some reason:
radeonsi+LLVM - TOTALS FROM AFFECTED SHADERS (4673/58355)
Spilled SGPRs: 1450 -> 1282 (-11.59 %)
Spilled VGPRs: 106 -> 107 (0.94 %)
Scratch size: 101 -> 102 (0.99 %) dwords per thread
Code Size: 14994624 -> 14956316 (-0.26 %) bytes
Max Waves: 66679 -> 66735 (0.08 %)
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29399>
There is nothing preventing ACO from generating loads with unused
components. This happens often with GLSL uniforms. Some of those loads
are partially re-vectorized after this.
radeonsi+ACO:
TOTALS FROM AFFECTED SHADERS (19564/58918)
VGPRs: 732900 -> 728448 (-0.61 %)
Spilled SGPRs: 429 -> 433 (0.93 %)
Code Size: 38446004 -> 38485612 (0.10 %) bytes
Max Waves: 305440 -> 305549 (0.04 %)
Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29399>
Instead of using a different voffset VGPR per streamout vertex,
point voffset to the first vertex for all 3 vertices because
the stride and vertex index are constant and can be in the immediate
offset.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32686>
Walk the whole vertex stride thanks to XFB info sorted by offset, gather
individual components from same or different outputs, and once we have
gathered 4, store them as vec4.
It also removes the memory_modes field from VMEM stores because I don't
think it's needed.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32686>
Walk the whole vertex stride thanks to XFB info sorted by offset, gather
individual components from same or different outputs, and once we have
gathered 4, store them as vec4.
It also removes the COHERENT flag from VMEM stores because NGG streamout
doesn't use it either and I don't think it's needed.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32686>
This is lowered in backend compilers (LLVM or ACO) because it needs
to access ttmp registers which aren't exposed to NIR.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32940>
This caused regression by using higher pitch than needed on compute-only
devices, resulting in video decode errors.
Fixes: 308bae950f ("ac/surface: Add RADEON_SURF_VIDEO_REFERENCE")
Tested-by: Sathishkumar S <sathishkumar.sundararaju@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32863>
ac_nir_lower_intrinsics_to_args will lower most system values.
I have to keep the divergence analysis in ACO, otherwise it goes haywire.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32782>
