mirror of
https://github.com/CrispyPin/sinpin-vr.git
synced 2024-11-25 11:30:26 +01:00
move everything to functions
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parent
ef25392907
commit
6aef8f92d7
1 changed files with 109 additions and 97 deletions
206
src/main.cpp
206
src/main.cpp
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@ -12,6 +12,7 @@ static vr::ETrackingUniverseOrigin TRACKING_UNIVERSE = vr::ETrackingUniverseOrig
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uint16_t width;
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uint16_t height;
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bool should_exit = false;
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Display *xdisplay;
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Window root_window;
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@ -24,98 +25,119 @@ vr::Texture_t vr_texture;
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GLuint screen_texture;
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GLFWwindow *gl_window;
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void cleanup(int _sig = 0);
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int main(int argc, char **argv)
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void init_x11()
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{
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signal(SIGINT, cleanup);
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xdisplay = XOpenDisplay(nullptr);
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assert(xdisplay != nullptr);
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printf("Created X11 display\n");
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root_window = XRootWindow(xdisplay, 0);
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XWindowAttributes attributes;
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XGetWindowAttributes(xdisplay, root_window, &attributes);
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width = attributes.width;
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height = attributes.height;
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}
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void init_glfw()
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{
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assert(glfwInit() == true);
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glfwWindowHint(GLFW_VISIBLE, false);
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gl_window = glfwCreateWindow(width, height, "Overlay", nullptr, nullptr);
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assert(gl_window != nullptr);
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glfwMakeContextCurrent(gl_window);
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printf("Created GLFW context\n");
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glGenTextures(1, &screen_texture);
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glBindTexture(GL_TEXTURE_2D, screen_texture);
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vr_texture.eColorSpace = vr::EColorSpace::ColorSpace_Auto;
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vr_texture.eType = vr::ETextureType::TextureType_OpenGL;
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vr_texture.handle = (void *)(uintptr_t)screen_texture;
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}
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void init_vr()
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{
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vr::EVRInitError init_err;
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ovr_sys = vr::VR_Init(&init_err, vr::EVRApplicationType::VRApplication_Overlay);
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assert(init_err == 0);
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ovr_overlay = vr::VROverlay();
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printf("Initialized openvr overlay\n");
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}
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void init_overlay()
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{
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auto overlay_err = ovr_overlay->CreateOverlay("deskpot", "Desktop view", &main_overlay);
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assert(overlay_err == 0);
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ovr_overlay->ShowOverlay(main_overlay);
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ovr_overlay->SetOverlayWidthInMeters(main_overlay, 2.5f);
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uint8_t col[4] = {20, 50, 50, 255};
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ovr_overlay->SetOverlayRaw(main_overlay, &col, 1, 1, 4);
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printf("Created overlay instance\n");
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vr::HmdMatrix34_t transform;
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auto err = ovr_overlay->GetOverlayTransformAbsolute(main_overlay, &TRACKING_UNIVERSE, &transform);
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assert(err == 0);
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transform.m[1][1] = -1; // flip Y axis
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err = ovr_overlay->SetOverlayTransformAbsolute(main_overlay, TRACKING_UNIVERSE, &transform);
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assert(err == 0);
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}
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void cleanup()
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{
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printf("\nShutting down\n");
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vr::VR_Shutdown();
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glfwDestroyWindow(gl_window);
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glfwTerminate();
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exit(0);
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}
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void render_desktop()
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{
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auto frame = XGetImage(xdisplay, root_window, 0, 0, width, height, AllPlanes, ZPixmap);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, frame->data);
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XDestroyImage(frame);
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auto set_err = ovr_overlay->SetOverlayTexture(main_overlay, &vr_texture);
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// if (set_err)
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// printf("error setting texture: %d\n", set_err);
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assert(set_err == 0);
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}
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void update_cursor()
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{
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int pix_x, pix_y;
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{
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xdisplay = XOpenDisplay(nullptr);
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assert(xdisplay != nullptr);
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printf("Created X11 display\n");
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root_window = XRootWindow(xdisplay, 0);
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XWindowAttributes attributes;
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XGetWindowAttributes(xdisplay, root_window, &attributes);
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width = attributes.width;
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height = attributes.height;
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Window _t1;
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int _t2;
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unsigned int _t3;
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XQueryPointer(xdisplay, root_window, &_t1, &_t1, &pix_x, &pix_y, &_t2, &_t2, &_t3);
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}
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// TODO: make this work when aspect ratio is >1 (root window is taller than it is wide)
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float ratio = (float)height / (float)width;
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float top_edge = 0.5f - ratio / 2.0f;
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float x = pix_x / (float)width;
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float y = pix_y / (float)width + top_edge;
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auto pos = vr::HmdVector2_t{x, y};
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ovr_overlay->SetOverlayCursorPositionOverride(main_overlay, &pos);
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}
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void interrupted(int _sig)
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{
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should_exit = true;
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}
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int main()
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{
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init_x11();
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init_glfw();
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init_vr();
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init_overlay();
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signal(SIGINT, interrupted);
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while (!should_exit)
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{
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assert(glfwInit() == true);
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glfwWindowHint(GLFW_VISIBLE, false);
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gl_window = glfwCreateWindow(width, height, "Overlay", nullptr, nullptr);
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assert(gl_window != nullptr);
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glfwMakeContextCurrent(gl_window);
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printf("Created GLFW context\n");
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}
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{
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vr::EVRInitError init_err;
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ovr_sys = vr::VR_Init(&init_err, vr::EVRApplicationType::VRApplication_Overlay);
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assert(init_err == 0);
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ovr_overlay = vr::VROverlay();
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printf("Initialized openvr overlay\n");
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}
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{
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auto overlay_err = ovr_overlay->CreateOverlay("deskpot", "Desktop view", &main_overlay);
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assert(overlay_err == 0);
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ovr_overlay->ShowOverlay(main_overlay);
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ovr_overlay->SetOverlayWidthInMeters(main_overlay, 2.5f);
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uint8_t col[4] = {20, 50, 50, 255};
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ovr_overlay->SetOverlayRaw(main_overlay, &col, 1, 1, 4);
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printf("Created overlay instance\n");
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}
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{
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vr::HmdMatrix34_t transform;
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auto err = ovr_overlay->GetOverlayTransformAbsolute(main_overlay, &TRACKING_UNIVERSE, &transform);
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assert(err == 0);
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transform.m[1][1] = -1;
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err = ovr_overlay->SetOverlayTransformAbsolute(main_overlay, TRACKING_UNIVERSE, &transform);
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assert(err == 0);
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}
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{
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glGenTextures(1, &screen_texture);
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glBindTexture(GL_TEXTURE_2D, screen_texture);
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vr_texture.eColorSpace = vr::EColorSpace::ColorSpace_Auto;
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vr_texture.eType = vr::ETextureType::TextureType_OpenGL;
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vr_texture.handle = (void *)(uintptr_t)screen_texture;
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}
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while (1)
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{
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auto frame = XGetImage(xdisplay, root_window, 0, 0, width, height, AllPlanes, ZPixmap);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, frame->data);
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XDestroyImage(frame);
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{
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auto set_err = ovr_overlay->SetOverlayTexture(main_overlay, &vr_texture);
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if (set_err)
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{
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printf("error setting texture: %d\n", set_err);
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assert(set_err == 0);
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}
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}
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{ // update cursor position
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int pix_x, pix_y;
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{
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Window _t1;
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int _t2;
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unsigned int _t3;
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XQueryPointer(xdisplay, root_window, &_t1, &_t1, &pix_x, &pix_y, &_t2, &_t2, &_t3);
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}
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// TODO: make this work when aspect ratio is >1 (root window is taller than it is wide)
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float ratio = (float)height / (float)width;
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float top_edge = 0.5f - ratio / 2.0f;
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float x = pix_x / (float)width;
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float y = pix_y / (float)width + top_edge;
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auto pos = vr::HmdVector2_t{x, y};
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ovr_overlay->SetOverlayCursorPositionOverride(main_overlay, &pos);
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}
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render_desktop();
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update_cursor();
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glfwSwapBuffers(gl_window);
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usleep(1000000 / FRAMERATE);
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@ -123,13 +145,3 @@ int main(int argc, char **argv)
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cleanup();
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return 0;
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}
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void cleanup(int _sig)
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{
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printf("\nCleaning up\n");
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vr::VR_Shutdown();
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glfwDestroyWindow(gl_window);
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glfwTerminate();
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printf("Shutting down\n");
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exit(0);
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}
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