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feat: add visionOS examples
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7 files changed

+340
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7 files changed

+340
-2
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‎examples/common/entry/entry_visionos.swift‎

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import SwiftUI
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import CompositorServices
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// Default configuration
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struct ContentStageConfiguration: CompositorLayerConfiguration {
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func makeConfiguration(capabilities: LayerRenderer.Capabilities, configuration: inout LayerRenderer.Configuration) {
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configuration.depthFormat = .depth32Float
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configuration.colorFormat = .bgra8Unorm_srgb
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let foveationEnabled = capabilities.supportsFoveation
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configuration.isFoveationEnabled = foveationEnabled
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let options: LayerRenderer.Capabilities.SupportedLayoutsOptions = foveationEnabled ? [.foveationEnabled] : []
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let supportedLayouts = capabilities.supportedLayouts(options: options)
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configuration.layout = supportedLayouts.contains(.layered) ? .layered : .dedicated
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}
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}
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@main
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struct ExampleApp: App {
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var body: some Scene {
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ImmersiveSpace {
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CompositorLayer(configuration: ContentStageConfiguration()) { layerRenderer in
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let renderThread = Thread {
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var engine = BgfxAdapter(layerRenderer)
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engine.renderLoop()
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}
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renderThread.name = "Render Thread"
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renderThread.start()
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}
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}
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}
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}

‎examples/common/entry/swift_adapter.cpp‎

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#include "entry_p.h"
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#if ENTRY_CONFIG_USE_NATIVE && BX_PLATFORM_VISIONOS
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#include "swift_adapter.hpp"
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#include <bgfx/platform.h>
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#include <bx/uint32_t.h>
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#include <bx/thread.h>
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namespace entry
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{
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struct MainThreadEntry
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{
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int m_argc;
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const char* const* m_argv;
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static int32_t threadFunc(bx::Thread* _thread, void* _userData);
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};
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static WindowHandle s_defaultWindow = { 0 };
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struct Context
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{
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Context(uint32_t _width, uint32_t _height)
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{
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static const char* const argv[] = { "visionos" };
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m_mte.m_argc = BX_COUNTOF(argv);
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m_mte.m_argv = argv;
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m_eventQueue.postSizeEvent(s_defaultWindow, _width, _height);
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// Prevent render thread creation.
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bgfx::renderFrame();
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m_thread.init(MainThreadEntry::threadFunc, &m_mte);
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}
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~Context()
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{
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m_thread.shutdown();
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}
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MainThreadEntry m_mte;
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bx::Thread m_thread;
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void* m_window;
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EventQueue m_eventQueue;
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};
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static Context* s_ctx;
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int32_t MainThreadEntry::threadFunc(bx::Thread* _thread, void* _userData)
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{
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BX_UNUSED(_thread);
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if (_thread != NULL) {
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_thread->setThreadName("Main Thread BGFX");
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}
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CFBundleRef mainBundle = CFBundleGetMainBundle();
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if (mainBundle != nil)
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{
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CFURLRef resourcesURL = CFBundleCopyResourcesDirectoryURL(mainBundle);
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if (resourcesURL != nil)
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{
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char path[PATH_MAX];
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if (CFURLGetFileSystemRepresentation(resourcesURL, TRUE, (UInt8*)path, PATH_MAX) )
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{
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chdir(path);
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}
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CFRelease(resourcesURL);
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}
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}
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MainThreadEntry* self = (MainThreadEntry*)_userData;
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int32_t result = main(self->m_argc, self->m_argv);
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return result;
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}
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const Event* poll()
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{
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return s_ctx->m_eventQueue.poll();
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}
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const Event* poll(WindowHandle _handle)
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{
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return s_ctx->m_eventQueue.poll(_handle);
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}
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void release(const Event* _event)
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{
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s_ctx->m_eventQueue.release(_event);
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}
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WindowHandle createWindow(int32_t _x, int32_t _y, uint32_t _width, uint32_t _height, uint32_t _flags, const char* _title)
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{
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BX_UNUSED(_x, _y, _width, _height, _flags, _title);
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WindowHandle handle = { UINT16_MAX };
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return handle;
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}
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void destroyWindow(WindowHandle _handle)
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{
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BX_UNUSED(_handle);
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}
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void setWindowPos(WindowHandle _handle, int32_t _x, int32_t _y)
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{
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BX_UNUSED(_handle, _x, _y);
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}
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void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height)
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{
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BX_UNUSED(_handle, _width, _height);
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}
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void setWindowTitle(WindowHandle _handle, const char* _title)
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{
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BX_UNUSED(_handle, _title);
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}
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void setWindowFlags(WindowHandle _handle, uint32_t _flags, bool _enabled)
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{
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BX_UNUSED(_handle, _flags, _enabled);
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}
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void toggleFullscreen(WindowHandle _handle)
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{
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BX_UNUSED(_handle);
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}
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void setMouseLock(WindowHandle _handle, bool _lock)
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{
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BX_UNUSED(_handle, _lock);
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}
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void* getNativeWindowHandle(WindowHandle _handle)
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{
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if (kDefaultWindowHandle.idx == _handle.idx)
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{
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return s_ctx->m_window;
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}
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return NULL;
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}
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void* getNativeDisplayHandle()
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{
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return NULL;
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}
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bgfx::NativeWindowHandleType::Enum getNativeWindowHandleType()
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{
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return bgfx::NativeWindowHandleType::Default;
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}
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} // namespace entry
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using namespace entry;
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bool BgfxAdapter::initialize(void) {
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if (!m_initialized) {
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// Set context width and height to default visionOS resolution. It's different for the headset and device.
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#if TARGET_OS_SIMULATOR
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s_ctx = new Context(2732, 2048);
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#else
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s_ctx = new Context(1920, 1824);
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#endif
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s_ctx->m_window = m_layerRenderer;
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m_initialized = true;
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}
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return m_initialized;
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}
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void BgfxAdapter::shutdown(void) {
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if (m_initialized) {
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s_ctx->m_eventQueue.postExitEvent();
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s_ctx = NULL;
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}
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m_initialized = false;
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}
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void BgfxAdapter::render() {
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if (!m_initialized) {
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return;
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}
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bgfx::renderFrame();
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}
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void BgfxAdapter::renderLoop() {
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bool isRendering = true;
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while (isRendering) {
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switch (cp_layer_renderer_get_state(m_layerRenderer)) {
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case cp_layer_renderer_state_paused:
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cp_layer_renderer_wait_until_running(m_layerRenderer);
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break;
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case cp_layer_renderer_state_running:
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this->initialize();
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this->render();
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break;
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case cp_layer_renderer_state_invalidated:
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isRendering = false;
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break;
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}
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}
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this->shutdown();
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}
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#endif // BX_PLATFORM_VISIONOS

‎examples/common/entry/swift_adapter.hpp‎

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#ifndef BgfxAdapter_hpp
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#define BgfxAdapter_hpp
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#include <CompositorServices/CompositorServices.h>
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class BgfxAdapter {
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private:
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bool m_initialized = false;
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cp_layer_renderer_t m_layerRenderer = NULL;
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public:
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BgfxAdapter(cp_layer_renderer_t layerRenderer) : m_layerRenderer(layerRenderer) {
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}
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~BgfxAdapter() {
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shutdown();
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}
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bool initialize(void);
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void shutdown(void);
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void render(void);
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void renderLoop(void);
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};
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#endif /* BgfxAdapter_hpp */
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‎examples/common/entry/swift_bridging_header.h‎

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#include "swift_adapter.hpp"

‎examples/runtime/xros-info.plist‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>en</string>
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<key>CFBundleDisplayName</key>
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<string>Examples Debug</string>
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<key>CFBundleExecutable</key>
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<string>$(EXECUTABLE_NAME)</string>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>$(PRODUCT_NAME)</string>
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleShortVersionString</key>
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<string>1.0</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleVersion</key>
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<string>1</string>
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<key>UIApplicationSceneManifest</key>
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<dict>
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<key>UIApplicationPreferredDefaultSceneSessionRole</key>
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<string>CPSceneSessionRoleImmersiveSpaceApplication</string>
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<key>UIApplicationSupportsMultipleScenes</key>
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<true/>
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</dict>
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</dict>
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</plist>

‎scripts/example-common.lua‎

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path.join(BGFX_DIR, "examples/common/**.mm"),
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}
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configuration { "xros*" }
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files {
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path.join(BGFX_DIR, "examples/common/**.swift"),
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path.join(BGFX_DIR, "examples/common/**.hpp"),
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path.join(BGFX_DIR, "examples/common/**.modulemap"),
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}
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xcodeprojectopts {
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SWIFT_VERSION = "5.0",
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SWIFT_OBJC_BRIDGING_HEADER = path.join(BGFX_DIR, "examples/common/entry/swift_bridging_header.h"),
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SWIFT_OBJC_INTEROP_MODE = "objcxx",
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}
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configuration { "winstore* or durango"}
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files {
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path.join(BGFX_DIR, "examples/common/**.cx"),

‎scripts/genie.lua‎

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"-weak_framework Metal",
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}
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configuration { "ios* or tvos*" }
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kind "ConsoleApp"
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configuration { "ios* or tvos* or xros*" }
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kind "WindowedApp"
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linkoptions {
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"-framework CoreFoundation",
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"-framework Foundation",
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"-framework UIKit",
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"-weak_framework Metal",
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}
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xcodecopyresources {
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{ "shaders/metal", {
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os.matchfiles(path.join(BGFX_DIR, "examples/runtime/shaders/metal/**.bin"))
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}}
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}
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configuration { "xcode*", "ios" }
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kind "WindowedApp"
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path.join(BGFX_DIR, "examples/runtime/tvOS-Info.plist"),
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}
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configuration { "xcode*", "xros" }
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kind "WindowedApp"
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files {
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path.join(BGFX_DIR, "examples/runtime/xros-info.plist"),
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}
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configuration {}
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strip()

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