vallium: initial import of the vulkan frontend
This is the initial import of the vallium frontend for gallium.
This is only good enough to run the triangle and the gears demo
(wrongly) from Sascha demos.
Improvements are mostly on the llvmpipe side after this.
It contains an implementation of the Vulkan API which is mapped
onto the gallium API, and is suitable only for SOFTWARE drivers.
Command buffers are recordred into malloced memory, then later
they are played back against the gallium API. The command buffers
are mostly just Vulkan API marshalling but in some places the information is
processed before being put into the command buffer (renderpass stuff).
Execution happens on a separate "graphics" thread, againt the gallium API.
There is only a single queue which wraps a single gallium context.
Resources are allocated via the new resource/memory APIs.
Shaders are created via the context and bound/unbound in the
second thread.
(No HW for reasons - memory management, sw paths for lots of paths,
pointless CPU side queue)
v2: drop mesa_icd, drop cpp_args, drop extra flags, change meson config (Eric)
v2.1: use meson-gallium job
meson pieces:
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
overall:
Acked-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6082>
diff --git a/meson.build b/meson.build
index c76748b..c3511c9 100644
--- a/meson.build
+++ b/meson.build
@@ -243,9 +243,9 @@
if _vulkan_drivers.contains('auto')
if system_has_kms_drm
if host_machine.cpu_family().startswith('x86')
- _vulkan_drivers = ['amd', 'intel']
+ _vulkan_drivers = ['amd', 'intel', 'swrast']
elif ['arm', 'aarch64'].contains(host_machine.cpu_family())
- _vulkan_drivers = []
+ _vulkan_drivers = ['swrast']
else
error('Unknown architecture @0@. Please pass -Dvulkan-drivers to set driver options. Patches gladly accepted to fix this.'.format(
host_machine.cpu_family()))
@@ -262,8 +262,12 @@
with_intel_vk = _vulkan_drivers.contains('intel')
with_amd_vk = _vulkan_drivers.contains('amd')
with_freedreno_vk = _vulkan_drivers.contains('freedreno')
+with_swrast_vk = _vulkan_drivers.contains('swrast')
with_any_vk = _vulkan_drivers.length() != 0
+if with_swrast_vk and not with_gallium_softpipe
+ error('swrast vulkan requires gallium swrast')
+endif
if with_dri_swrast and (with_gallium_softpipe or with_gallium_swr)
error('Only one swrast provider can be built')
endif