inital commit
This commit is contained in:
commit
986a08b724
2 changed files with 204 additions and 0 deletions
10
CMakeLists.txt
Normal file
10
CMakeLists.txt
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
cmake_minimum_required(VERSION 3.20)
|
||||
|
||||
project(xrexpirament)
|
||||
|
||||
find_package(OpenXR REQUIRED)
|
||||
|
||||
add_executable(${PROJECT_NAME} main.c)
|
||||
target_include_directories(${PROJECT_NAME} SYSTEM PUBLIC ${OpenXR_INCLUDE_DIR})
|
||||
target_link_libraries(${PROJECT_NAME} OpenXR::openxr_loader)
|
||||
|
||||
194
main.c
Normal file
194
main.c
Normal file
|
|
@ -0,0 +1,194 @@
|
|||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <openxr/openxr.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdbool.h>
|
||||
#include <string.h>
|
||||
#include <signal.h>
|
||||
#include <time.h>
|
||||
|
||||
sig_atomic_t stop = false;
|
||||
|
||||
void handler(int sig)
|
||||
{
|
||||
stop = true;
|
||||
}
|
||||
|
||||
#define HEADLESS_EXT "XR_MND_headless"
|
||||
|
||||
static const char* xr_strerror(XrInstance instance, XrResult err)
|
||||
{
|
||||
static char buffer[XR_MAX_RESULT_STRING_SIZE];
|
||||
xrResultToString(instance, err, buffer);
|
||||
return buffer;
|
||||
}
|
||||
|
||||
void clear()
|
||||
{
|
||||
puts("\033[H\033[J");
|
||||
}
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
XrInstance instance;
|
||||
XrApplicationInfo applicationInfo = {
|
||||
.applicationName = "OpenXR Example",
|
||||
.engineName = "Example Engine",
|
||||
.apiVersion = XR_API_VERSION_1_0,
|
||||
};
|
||||
|
||||
uint32_t extentionPropCount;
|
||||
xrEnumerateInstanceExtensionProperties(NULL, 0, &extentionPropCount, NULL);
|
||||
XrExtensionProperties *proparties = calloc(extentionPropCount, sizeof(*proparties));
|
||||
for (uint32_t i = 0; i < extentionPropCount; ++i)
|
||||
proparties[i].type = XR_TYPE_EXTENSION_PROPERTIES;
|
||||
XrResult result = xrEnumerateInstanceExtensionProperties(NULL, extentionPropCount, &extentionPropCount, proparties);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to query OpenXR extensions: %d\n", result);
|
||||
return 1;
|
||||
}
|
||||
printf("OpenXR extensions: %d\n", extentionPropCount);
|
||||
bool foundHeadless = false;
|
||||
for (uint32_t i = 0; i < extentionPropCount; ++i) {
|
||||
printf("\t%s\n", proparties[i].extensionName);
|
||||
if (strcmp(HEADLESS_EXT, proparties[i].extensionName) == 0)
|
||||
foundHeadless = true;
|
||||
}
|
||||
if (!foundHeadless) {
|
||||
puts("Runtime dose not support " HEADLESS_EXT);
|
||||
return 1;
|
||||
}
|
||||
|
||||
const char *enabledExtensionNames[] = {HEADLESS_EXT, NULL};
|
||||
|
||||
XrInstanceCreateInfo createInfo = {
|
||||
.type = XR_TYPE_INSTANCE_CREATE_INFO,
|
||||
.next = NULL,
|
||||
.createFlags = 0,
|
||||
.applicationInfo = applicationInfo,
|
||||
.enabledExtensionNames = enabledExtensionNames,
|
||||
.enabledExtensionCount = 1
|
||||
};
|
||||
|
||||
XrSystemGetInfo getInfo = {
|
||||
.type = XR_TYPE_SYSTEM_GET_INFO,
|
||||
.formFactor = XR_FORM_FACTOR_HEAD_MOUNTED_DISPLAY
|
||||
};
|
||||
|
||||
result = xrCreateInstance(&createInfo, &instance);
|
||||
if (XR_SUCCEEDED(result)) {
|
||||
printf("OpenXR instance created successfully.\n");
|
||||
} else {
|
||||
printf("Failed to create OpenXR instance: %d\n", result);
|
||||
return 1;
|
||||
}
|
||||
|
||||
XrSystemId systemId;
|
||||
result = xrGetSystem(instance, &getInfo, &systemId);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to get OpenXR system: %s\n", xr_strerror(instance, result));
|
||||
return 1;
|
||||
}
|
||||
|
||||
uint32_t viewCount;
|
||||
result = xrEnumerateViewConfigurationViews(instance, systemId, XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO, 0, &viewCount, NULL);
|
||||
XrViewConfigurationView* viewConfigs = calloc(viewCount, sizeof(XrViewConfigurationView));
|
||||
for (size_t i = 0; i < viewCount; ++i)
|
||||
viewConfigs[i].type = XR_TYPE_VIEW_CONFIGURATION_VIEW;
|
||||
if (XR_SUCCEEDED(result)) {
|
||||
result = xrEnumerateViewConfigurationViews(instance, systemId, XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO, viewCount, &viewCount, viewConfigs);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to enumerate viewConfigs: %d\n", result);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
XrSession session;
|
||||
XrSessionCreateInfo createSessionInfo = {
|
||||
.type = XR_TYPE_SESSION_CREATE_INFO,
|
||||
.systemId = systemId
|
||||
};
|
||||
result = xrCreateSession(instance, &createSessionInfo, &session);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to create session: %s\n", xr_strerror(instance, result));
|
||||
return 1;
|
||||
}
|
||||
XrSessionBeginInfo beginInfo = {.type = XR_TYPE_SESSION_BEGIN_INFO, .primaryViewConfigurationType = XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO};
|
||||
result = xrBeginSession(session, &beginInfo);
|
||||
|
||||
XrSpace stageSpace;
|
||||
XrReferenceSpaceCreateInfo spaceCreateInfo = {
|
||||
.type = XR_TYPE_REFERENCE_SPACE_CREATE_INFO,
|
||||
.referenceSpaceType = XR_REFERENCE_SPACE_TYPE_STAGE
|
||||
};
|
||||
spaceCreateInfo.poseInReferenceSpace.orientation.x = 1;
|
||||
result = xrCreateReferenceSpace(session, &spaceCreateInfo, &stageSpace);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to create referance space: %s\n", xr_strerror(instance, result));
|
||||
return 1;
|
||||
}
|
||||
|
||||
struct timespec duration = {.tv_sec = 1};
|
||||
nanosleep(&duration, NULL);
|
||||
|
||||
XrView *views = calloc(viewCount, sizeof(*views));
|
||||
for (size_t i = 0; i < viewCount; ++i)
|
||||
views[i].type = XR_TYPE_VIEW;
|
||||
XrViewState state = {.type = XR_TYPE_VIEW_STATE};
|
||||
|
||||
signal(SIGTERM, handler);
|
||||
signal(SIGHUP, handler);
|
||||
signal(SIGINT, handler);
|
||||
|
||||
while(!stop) {
|
||||
XrFrameWaitInfo waitInfo = {.type = XR_TYPE_FRAME_WAIT_INFO};
|
||||
XrFrameState frameState = {.type = XR_TYPE_FRAME_STATE};
|
||||
result = xrWaitFrame(session, &waitInfo, &frameState);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to wait for frame: %s\n", xr_strerror(instance, result));
|
||||
return 1;
|
||||
} else {
|
||||
printf("waited for frame time: %lu\n", frameState.predictedDisplayPeriod);
|
||||
}
|
||||
|
||||
XrViewLocateInfo locateInfo = {
|
||||
.type = XR_TYPE_VIEW_LOCATE_INFO,
|
||||
.viewConfigurationType = XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO,
|
||||
.space = stageSpace,
|
||||
.displayTime = frameState.predictedDisplayTime+1
|
||||
};
|
||||
uint32_t locatedViews;
|
||||
result = xrLocateViews(session, &locateInfo, &state, viewCount, &locatedViews, views);
|
||||
if (!XR_SUCCEEDED(result)) {
|
||||
printf("Failed to locate views: %s\n", xr_strerror(instance, result));
|
||||
struct timespec duration = {.tv_nsec = 1000*100};
|
||||
nanosleep(&duration, NULL);
|
||||
continue;
|
||||
} else if (locatedViews != viewCount) {
|
||||
printf("Failed to locate all views");
|
||||
struct timespec duration = {.tv_nsec = 1000*100};
|
||||
nanosleep(&duration, NULL);
|
||||
continue;
|
||||
}
|
||||
|
||||
clear();
|
||||
for (size_t i = 0; i < viewCount; ++i) {
|
||||
printf("View %zu:\n", i);
|
||||
printf("\tRecommended Size: %d x %d\n", viewConfigs[i].recommendedImageRectWidth, viewConfigs[i].recommendedImageRectHeight);
|
||||
printf("\tFOV:\n\t\tUP: %f\n\t\tDOWN: %f\n\t\tLEFT: %f\n\t\tRIGHT: %f\n", views[i].fov.angleUp, views[i].fov.angleDown, views[i].fov.angleLeft, views[i].fov.angleRight);
|
||||
printf("\tPOS:\n\t\tX: %f\n\t\tY: %f\n\t\tZ: %f\n", views[i].pose.position.x, views[i].pose.position.y, views[i].pose.position.z);
|
||||
}
|
||||
|
||||
struct timespec duration = {.tv_nsec = 1000*100};
|
||||
nanosleep(&duration, NULL);
|
||||
}
|
||||
|
||||
xrEndSession(session);
|
||||
free(views);
|
||||
free(viewConfigs);
|
||||
xrDestroySpace(stageSpace);
|
||||
xrDestroySession(session);
|
||||
xrDestroyInstance(instance);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue