Usually renderdoc captures frames by hooking the present functions to
recognize when an application is finished rendering a frame.
OpenXR applications might not present to a window. Therefore use the
renderdoc API to capture application frames between xrBeginFrame and
and xrEndFrame.
This allows renderdoc to capture application frames without the need
to modify the application.
When building on linux and OPENGL_GLX OFF compilation fails with the
following error:
-----------------------------------------------------------------------
../../state_trackers/oxr/libst_oxr.a(oxr_session_gfx_gl.c.o): In function `oxr_session_populate_gl_xlib':
oxr_session_gfx_gl.c:(.text+0x5c): undefined reference to `xrt_gfx_provider_create_gl_xlib'
collect2: error: ld returned 1 exit status
src/xrt/targets/openxr/CMakeFiles/openxr_monado.dir/build.make:126: recipe for target 'src/xrt/targets/openxr/libopenxr_monado.so' failed
make[2]: *** [src/xrt/targets/openxr/libopenxr_monado.so] Error 1
CMakeFiles/Makefile2:2490: recipe for target 'src/xrt/targets/openxr/CMakeFiles/openxr_monado.dir/all' failed
make[1]: *** [src/xrt/targets/openxr/CMakeFiles/openxr_monado.dir/all] Error 2
Makefile:145: recipe for target 'all' failed
make: *** [all] Error 2
-----------------------------------------------------------------------
Apparently the gl_xlib backend really depends on GLX specifically, so
fix the issue by reflecting that in the conditionally compiled blocks.
This matches the OpenXR usage: the array is the plural of the element type,
and the count is the singular element type plus "count" (usually CountOutput
because of the two-call idiom)
Includes fixes to other code to match API changes.
The hardcoded value 32 was actually wrong and caused a warning
../src/xrt/state_trackers/oxr/oxr_input.c:668:9: warning: 'oxr_binding_find_bindings_from_key' accessing 256 bytes in a region of size 128 [-Wstringop-overflow=]
668 | oxr_binding_find_bindings_from_key(log, profile, act->act_key, binding_points, &num);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
XR_KHR_vulkan_enable2:
physicalDevice VkPhysicalDevice must match the device specified by xrGetVulkanGraphicsDevice2KHR
XR_KHR_vulkan_enable:
physicalDevice VkPhysicalDevice must match the device specified by xrGetVulkanGraphicsDeviceKHR
XR_KHR_vulkan_enable:
Add a trivial check that xrGetVulkanGraphicsDeviceKHR is called before xrCreateSession.
(our cached suggested device will be XR_NULL_HANDLE if it has not been called).
The XR_KHR_vulkan_enable2 code path already contains this check.
