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anv: Submit a dummy batch when only semaphores are provided.

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Vulkan allows you to do a submit whose only job is to wait on and
trigger semaphores.  The easiest way for us to support that right
now is to insert a dummy execbuf.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand
2017-02-27 16:34:13 -08:00
parent 031f57eba3
commit 017cdb10cf
4 changed files with 73 additions and 3 deletions
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30
src/intel/vulkan/anv_device.c
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@@ -1014,6 +1014,32 @@ anv_device_init_border_colors(struct anv_device *device)
border_colors);
}
static void
anv_device_init_trivial_batch(struct anv_device *device)
{
anv_bo_init_new(&device->trivial_batch_bo, device, 4096);
if (device->instance->physicalDevice.has_exec_async)
device->trivial_batch_bo.flags |= EXEC_OBJECT_ASYNC;
void *map = anv_gem_mmap(device, device->trivial_batch_bo.gem_handle,
0, 4096, 0);
struct anv_batch batch = {
.start = map,
.next = map,
.end = map + 4096,
};
anv_batch_emit(&batch, GEN7_MI_BATCH_BUFFER_END, bbe);
anv_batch_emit(&batch, GEN7_MI_NOOP, noop);
if (!device->info.has_llc)
gen_clflush_range(map, batch.next - map);
anv_gem_munmap(map, device->trivial_batch_bo.size);
}
VkResult anv_CreateDevice(
VkPhysicalDevice physicalDevice,
const VkDeviceCreateInfo* pCreateInfo,
@@ -1131,6 +1157,8 @@ VkResult anv_CreateDevice(
if (result != VK_SUCCESS)
goto fail_surface_state_pool;
anv_device_init_trivial_batch(device);
anv_scratch_pool_init(device, &device->scratch_pool);
anv_queue_init(device, &device->queue);
@@ -1220,6 +1248,8 @@ void anv_DestroyDevice(
anv_gem_munmap(device->workaround_bo.map, device->workaround_bo.size);
anv_gem_close(device, device->workaround_bo.gem_handle);
anv_gem_close(device, device->trivial_batch_bo.gem_handle);
anv_state_pool_finish(&device->surface_state_pool);
anv_state_pool_finish(&device->instruction_state_pool);
anv_state_pool_finish(&device->dynamic_state_pool);