sdl_internal.h File Reference

Internal header for SDL XR system. More...

#include "xrt/xrt_system.h"
#include "xrt/xrt_device.h"
#include "xrt/xrt_instance.h"
#include "xrt/xrt_tracking.h"
#include "xrt/xrt_compositor.h"
#include "util/u_pacing.h"
#include "util/u_logging.h"
#include "util/comp_base.h"
#include "util/comp_swapchain.h"
#include "SDL2/SDL.h"
#include "ogl/ogl_api.h"

Include dependency graph for sdl_internal.h:

Go to the source code of this file.

Data Structures
struct	sdl_swapchain
	Sub-class of comp_swapchain, used to do OpenGL rendering. More...
struct	sdl_comp_frame
	Tracking frame state. More...
struct	sdl_compositor
	Split out for convenience. More...
struct	sdl_program
	C base class for the SDL program. More...

Macros
#define	CHECK_GL()
	Check for OpenGL errors, context needs to be current.

Functions
static struct sdl_program *	from_xinst (struct xrt_instance *xinst)
static struct sdl_program *	from_xsysd (struct xrt_system_devices *xsysd)
static struct sdl_program *	from_xdev (struct xrt_device *xdev)
static struct sdl_program *	from_comp (struct xrt_compositor *xc)
static void	sdl_make_current (struct sdl_program *sp)
	Makes the OpenGL context current in this thread, takes lock.
static void	sdl_make_uncurrent (struct sdl_program *sp)
	Unmakes the any OpenGL context current in this thread, releases the lock.
void	sdl_device_init (struct sdl_program *sp)
	Init the xrt_device sub struct.
xrt_result_t	sdl_swapchain_create (struct xrt_compositor *xc, const struct xrt_swapchain_create_info *info, struct xrt_swapchain **out_xsc)
	Implementation of xrt_compositor::create_swapchain.
xrt_result_t	sdl_swapchain_import (struct xrt_compositor *xc, const struct xrt_swapchain_create_info *info, struct xrt_image_native *native_images, uint32_t native_image_count, struct xrt_swapchain **out_xsc)
	Implementation of xrt_compositor::import_swapchain.
void	sdl_compositor_init (struct sdl_program *sp)
	Initializes the compositor part of the SDL program.
xrt_result_t	sdl_compositor_create_system (struct sdl_program *sp, struct xrt_system_compositor **out_xsysc)
	Creates the system compositor that wraps the native compositor.
void	sdl_system_init (struct sdl_program *sp)
	Init the xrt_system (and u_system) struct.
void	sdl_system_devices_init (struct sdl_program *sp)
	Init the xrt_system_devices sub struct.
void	sdl_instance_init (struct sdl_program *sp)
	Init the xrt_instance sub struct.
struct sdl_program *	sdl_program_plus_create (void)
	Create the SDL program.
void	sdl_program_plus_render (struct sdl_program_plus *spp)
	Render a frame, called by the compositor when layers have been committed.
void	sdl_program_plus_destroy (struct sdl_program_plus *spp)
	Destroy the SDL program.

Detailed Description

Internal header for SDL XR system.

Author

Jakob Bornecrantz jakob.nosp@m.@col.nosp@m.labor.nosp@m.a.co.nosp@m.m

Macro Definition Documentation

CHECK_GL

#define CHECK_GL

(

)

Value:

        do {                                                                                                           \
                GLint err = glGetError();                                                                              \
                if (err != 0) {                                                                                        \
                        U_LOG_RAW("%s:%u: error: 0x%04x", __func__, __LINE__, err);                                    \
                }                                                                                                      \
        } while (false)

Check for OpenGL errors, context needs to be current.

Function Documentation

sdl_compositor_create_system()

xrt_result_t sdl_compositor_create_system	(	struct sdl_program *	sp,
		struct xrt_system_compositor **	out_xsysc
	)

Creates the system compositor that wraps the native compositor.

References comp_base::base, sdl_compositor::base, sdl_program::c, comp_multi_create_system_compositor(), u_pa_factory_create(), and XRT_SUCCESS.

sdl_compositor_init()

void sdl_compositor_init

(

struct sdl_program *

sp

)

Initializes the compositor part of the SDL program.

References comp_base::base, xrt_compositor_native::base, sdl_compositor::base, xrt_compositor::begin_frame, xrt_compositor::begin_session, sdl_program::c, xrt_compositor::create_swapchain, xrt_compositor::destroy, xrt_compositor::discard_frame, xrt_compositor::end_session, sdl_compositor::frame, sdl_compositor::frame_interval_ns, xrt_compositor::import_swapchain, xrt_compositor::layer_commit, sdl_program::log_level, xrt_compositor::mark_frame, xrt_compositor::predict_frame, sdl_swapchain_create(), sdl_swapchain_import(), U_TIME_1S_IN_NS, comp_base::vk, and sdl_program::xdev_base.

Referenced by sdl_program_plus_create().

sdl_device_init()

void sdl_device_init

(

struct sdl_program *

sp

)

Init the xrt_device sub struct.

In sdl_device.c

References xrt_input::active, ARRAY_SIZE, xrt_hmd_parts::blend_modes, xrt_device::destroy, xrt_device::get_tracked_pose, xrt_device::get_view_poses, xrt_device::hmd, sdl_program::hmd, xrt_tracking_origin::initial_offset, xrt_device::input_count, xrt_device::inputs, sdl_program::inputs, xrt_device::name, xrt_tracking_origin::name, xrt_hmd_parts::nominal_frame_interval_ns, sdl_program::origin, xrt_hmd_parts::screens, xrt_device::serial, xrt_device::str, time_s_to_ns(), xrt_device::tracking_origin, xrt_tracking_origin::type, u_device_get_view_poses(), u_device_noop_update_inputs(), u_device_setup_split_side_by_side(), u_distortion_mesh_set_none(), U_LOG_E, xrt_device::update_inputs, sdl_program::xdev_base, XRT_INPUT_GENERIC_HEAD_POSE, xrt_pose::XRT_POSE_IDENTITY, and XRT_TRACKING_TYPE_OTHER.

Referenced by sdl_program_plus_create().

sdl_instance_init()

void sdl_instance_init

(

struct sdl_program *

sp

)

Init the xrt_instance sub struct.

References xrt_instance::create_system, xrt_instance::destroy, xrt_instance::get_prober, and sdl_program::xinst_base.

Referenced by sdl_program_plus_create().

sdl_make_current()

static void sdl_make_current ( struct sdl_program *  sp )

inlinestatic

Makes the OpenGL context current in this thread, takes lock.

References sdl_program::ctx, sdl_program::current_mutex, and sdl_program::win.

Referenced by sdl_program_plus_render().

sdl_make_uncurrent()

static void sdl_make_uncurrent ( struct sdl_program *  sp )

inlinestatic

Unmakes the any OpenGL context current in this thread, releases the lock.

References sdl_program::current_mutex.

Referenced by sdl_program_plus_render().

sdl_program_plus_create()

struct sdl_program * sdl_program_plus_create

(

void

)

Create the SDL program.

References sdl_program::current_mutex, sdl_program::log_level, sdl_program::pose, sdl_compositor_init(), sdl_device_init(), sdl_instance_init(), sdl_system_devices_init(), sdl_system_init(), sdl_program::spp, and U_LOGGING_INFO.

sdl_program_plus_destroy()

void sdl_program_plus_destroy

(

struct sdl_program_plus *

spp

)

Destroy the SDL program.

References sdl_program::current_mutex, and sdl_program::spp.

sdl_program_plus_render()

void sdl_program_plus_render

(

struct sdl_program_plus *

spp

)

Render a frame, called by the compositor when layers have been committed.

References sdl_compositor::base, sdl_program::c, CHECK_GL, comp_layer::data, comp_base::layer_accum, comp_layer_accum::layer_count, comp_layer_accum::layers, comp_layer::sc_array, sdl_make_current(), sdl_make_uncurrent(), sdl_program::spp, xrt_layer_data::type, and sdl_program::win.

sdl_swapchain_create()

xrt_result_t sdl_swapchain_create	(	struct xrt_compositor *	xc,
		const struct xrt_swapchain_create_info *	info,
		struct xrt_swapchain **	out_xsc
	)

Implementation of xrt_compositor::create_swapchain.

References xrt_swapchain_native::base, sdl_compositor::base, sdl_program::c, comp_swapchain_create_init(), comp_base::cscs, really_destroy(), sdl_swapchain::sp, U_TYPED_CALLOC, comp_base::vk, and XRT_SUCCESS.

Referenced by sdl_compositor_init().

sdl_swapchain_import()

xrt_result_t sdl_swapchain_import	(	struct xrt_compositor *	xc,
		const struct xrt_swapchain_create_info *	info,
		struct xrt_image_native *	native_images,
		uint32_t	native_image_count,
		struct xrt_swapchain **	out_xsc
	)

Implementation of xrt_compositor::import_swapchain.

References xrt_swapchain_native::base, sdl_compositor::base, sdl_program::c, comp_swapchain_import_init(), comp_base::cscs, really_destroy(), sdl_swapchain::sp, U_TYPED_CALLOC, comp_base::vk, and XRT_SUCCESS.

Referenced by sdl_compositor_init().

sdl_system_devices_init()

void sdl_system_devices_init

(

struct sdl_program *

sp

)

Init the xrt_system_devices sub struct.

References u_system::broadcast, xrt_system_devices::destroy, xrt_system_devices::get_roles, xrt_system_devices::head, simulated_hmd_create(), xrt_system_devices::static_roles, u_builder_create_space_overseer_legacy(), sdl_program::usys, sdl_program::xdev_base, xrt_system_devices::xdev_count, xrt_system_devices::xdevs, xrt_pose::XRT_POSE_IDENTITY, sdl_program::xso, and sdl_program::xsysd_base.

Referenced by sdl_program_plus_create().

sdl_system_init()

void sdl_system_init

(

struct sdl_program *

sp

)

Init the xrt_system (and u_system) struct.

References u_system::u_system_create(), and sdl_program::usys.

Referenced by sdl_program_plus_create().