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st/oxr: Detect VK_LAYER_MND_enable_timeline_semaphore

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And enable timeline semaphore support if it is found.
This commit is contained in:
Jakob Bornecrantz 2022-04-05 21:34:28 +01:00
parent 1a00709186
commit d89b8f40d9
1 changed files with 51 additions and 3 deletions
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54
src/xrt/state_trackers/oxr/oxr_session_gfx_vk.c
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@ -8,23 +8,65 @@
* @ingroup comp_client
*/
#include <stdlib.h>
#include "xrt/xrt_instance.h"
#include "xrt/xrt_gfx_vk.h"
#include "util/u_misc.h"
#include "util/u_debug.h"
#include "vk/vk_helpers.h"
#include "oxr_objects.h"
#include "oxr_logger.h"
#include "oxr_two_call.h"
#include "oxr_handle.h"
DEBUG_GET_ONCE_BOOL_OPTION(force_timeline_semaphores, "OXR_DEBUG_FORCE_TIMELINE_SEMAPHORES", false)
static bool
check_for_layer_mnd_enable_timeline_semaphore(struct oxr_logger *log,
VkInstance instance,
VkPhysicalDevice physical_device)
{
PFN_vkEnumerateDeviceLayerProperties func =
(PFN_vkEnumerateDeviceLayerProperties)vkGetInstanceProcAddr(instance, "vkEnumerateDeviceLayerProperties");
uint32_t prop_count = 0;
VkResult ret = VK_SUCCESS;
ret = func(physical_device, &prop_count, NULL);
if (ret != VK_SUCCESS) {
oxr_log(log, "vkEnumerateDeviceLayerProperties: %s", vk_result_string(ret));
return false;
}
if (prop_count == 0) {
// No layers, nothing more to do.
return false;
}
VkLayerProperties *props = NULL;
props = U_TYPED_ARRAY_CALLOC(VkLayerProperties, prop_count);
ret = func(physical_device, &prop_count, props);
if (ret != VK_SUCCESS) {
oxr_log(log, "vkEnumerateDeviceLayerProperties: %s", vk_result_string(ret));
free(props);
return false;
}
for (uint32_t i = 0; i < prop_count; i++) {
if (strcmp(props[i].layerName, "VK_LAYER_MND_enable_timeline_semaphore") == 0) {
free(props);
return true;
}
}
free(props);
return false;
}
XrResult
oxr_session_populate_vk(struct oxr_logger *log,
struct oxr_system *sys,
@ -33,6 +75,12 @@ oxr_session_populate_vk(struct oxr_logger *log,
{
bool timeline_semaphore_enabled = sess->sys->vk.timeline_semaphore_enabled;
if (!timeline_semaphore_enabled &&
check_for_layer_mnd_enable_timeline_semaphore(log, next->instance, next->physicalDevice)) {
oxr_log(log, "Found VK_LAYER_MND_enable_timeline_semaphore and enabled them!");
timeline_semaphore_enabled = true;
}
if (!timeline_semaphore_enabled && debug_get_bool_option_force_timeline_semaphores()) {
oxr_log(log, "Forcing timeline semaphores on, your app better have enabled them!");
timeline_semaphore_enabled = true;