render: add wlr_egl_create_from_drm_fd function
This commit is contained in:
Simon Zeni
Simon Ser
parent
62f37ee319
commit
ee31be167b
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@ -53,6 +53,9 @@ struct wlr_egl {
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// Device extensions
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bool device_drm_ext;
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// Client extensions
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bool device_query_ext;
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} exts;
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struct {
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@ -70,6 +73,7 @@ struct wlr_egl {
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PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
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PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT;
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PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;
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PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT;
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} procs;
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struct wl_display *wl_display;
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@ -87,6 +91,15 @@ struct wlr_egl {
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struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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const EGLint *config_attribs);
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/**
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* Creates and EGL context from a given drm fd. This function uses the
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* following extensions:
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* - EXT_device_enumeration to get the list of available EGLDeviceEXT
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* - EXT_device_drm to get the name of the EGLDeviceEXT
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* - EXT_platform_device to create an EGLDisplay from an EGLDeviceEXT
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*/
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struct wlr_egl *wlr_egl_create_from_drm_fd(int drm_fd);
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/**
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* Frees all related EGL resources, makes the context not-current and
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* unbinds a bound wayland display.
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166
render/egl.c
166
render/egl.c
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@ -150,8 +150,7 @@ out:
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free(formats);
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}
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struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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const EGLint *config_attribs) {
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static struct wlr_egl *egl_create(void) {
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struct wlr_egl *egl = calloc(1, sizeof(struct wlr_egl));
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if (egl == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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@ -167,6 +166,7 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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}
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return NULL;
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}
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wlr_log(WLR_INFO, "Supported EGL client extensions: %s", client_exts_str);
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if (!check_egl_ext(client_exts_str, "EGL_EXT_platform_base")) {
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wlr_log(WLR_ERROR, "EGL_EXT_platform_base not supported");
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@ -177,6 +177,18 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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load_egl_proc(&egl->procs.eglCreatePlatformWindowSurfaceEXT,
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"eglCreatePlatformWindowSurfaceEXT");
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if (check_egl_ext(client_exts_str, "EGL_EXT_device_enumeration")) {
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load_egl_proc(&egl->procs.eglQueryDevicesEXT, "eglQueryDevicesEXT");
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}
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if (check_egl_ext(client_exts_str, "EGL_EXT_device_query")) {
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egl->exts.device_query_ext = true;
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load_egl_proc(&egl->procs.eglQueryDeviceStringEXT,
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"eglQueryDeviceStringEXT");
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load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT,
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"eglQueryDisplayAttribEXT");
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}
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if (check_egl_ext(client_exts_str, "EGL_KHR_debug")) {
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load_egl_proc(&egl->procs.eglDebugMessageControlKHR,
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"eglDebugMessageControlKHR");
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@ -193,26 +205,31 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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if (eglBindAPI(EGL_OPENGL_ES_API) == EGL_FALSE) {
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wlr_log(WLR_ERROR, "Failed to bind to the OpenGL ES API");
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goto error;
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return NULL;
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}
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return egl;
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}
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static bool egl_init(struct wlr_egl *egl, EGLenum platform,
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void *remote_display, const EGLint *config_attribs) {
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egl->display = egl->procs.eglGetPlatformDisplayEXT(platform,
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remote_display, NULL);
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if (egl->display == EGL_NO_DISPLAY) {
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wlr_log(WLR_ERROR, "Failed to create EGL display");
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goto error;
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return false;
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}
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EGLint major, minor;
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if (eglInitialize(egl->display, &major, &minor) == EGL_FALSE) {
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wlr_log(WLR_ERROR, "Failed to initialize EGL");
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goto error;
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return false;
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}
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const char *display_exts_str = eglQueryString(egl->display, EGL_EXTENSIONS);
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if (display_exts_str == NULL) {
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wlr_log(WLR_ERROR, "Failed to query EGL display extensions");
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return NULL;
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return false;
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}
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if (check_egl_ext(display_exts_str, "EGL_KHR_image_base")) {
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@ -251,17 +268,12 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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}
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const char *device_exts_str = NULL;
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if (check_egl_ext(client_exts_str, "EGL_EXT_device_query")) {
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load_egl_proc(&egl->procs.eglQueryDisplayAttribEXT,
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"eglQueryDisplayAttribEXT");
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load_egl_proc(&egl->procs.eglQueryDeviceStringEXT,
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"eglQueryDeviceStringEXT");
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if (egl->exts.device_query_ext) {
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EGLAttrib device_attrib;
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if (!egl->procs.eglQueryDisplayAttribEXT(egl->display,
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EGL_DEVICE_EXT, &device_attrib)) {
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wlr_log(WLR_ERROR, "eglQueryDisplayAttribEXT(EGL_DEVICE_EXT) failed");
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goto error;
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return false;
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}
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egl->device = (EGLDeviceEXT)device_attrib;
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@ -269,7 +281,7 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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egl->procs.eglQueryDeviceStringEXT(egl->device, EGL_EXTENSIONS);
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if (device_exts_str == NULL) {
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wlr_log(WLR_ERROR, "eglQueryDeviceStringEXT(EGL_EXTENSIONS) failed");
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goto error;
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return false;
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}
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egl->exts.device_drm_ext =
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@ -281,28 +293,27 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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if (!eglChooseConfig(egl->display, config_attribs, &egl->config, 1,
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&matched)) {
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wlr_log(WLR_ERROR, "eglChooseConfig failed");
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goto error;
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return false;
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}
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if (matched == 0) {
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wlr_log(WLR_ERROR, "Failed to match an EGL config");
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goto error;
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return false;
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}
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} else {
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if (!check_egl_ext(display_exts_str, "EGL_KHR_no_config_context") &&
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!check_egl_ext(display_exts_str, "EGL_MESA_configless_context")) {
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wlr_log(WLR_ERROR, "EGL_KHR_no_config_context or "
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"EGL_MESA_configless_context not supported");
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goto error;
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return false;
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}
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egl->config = EGL_NO_CONFIG_KHR;
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}
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wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor);
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wlr_log(WLR_INFO, "Supported EGL client extensions: %s", client_exts_str);
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wlr_log(WLR_INFO, "Supported EGL display extensions: %s", display_exts_str);
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if (device_exts_str != NULL) {
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wlr_log(WLR_INFO, "Supported EGL device extensions: %s", device_exts_str);
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}
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wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor);
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wlr_log(WLR_INFO, "EGL vendor: %s", eglQueryString(egl->display, EGL_VENDOR));
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init_dmabuf_formats(egl);
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@ -317,7 +328,8 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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// On DRM, request a high priority context if possible
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bool request_high_priority = ext_context_priority &&
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platform == EGL_PLATFORM_GBM_MESA;
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(platform == EGL_PLATFORM_GBM_MESA
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|| platform == EGL_PLATFORM_DEVICE_EXT);
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// Try to reschedule all of our rendering to be completed first. If it
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// fails, it will fallback to the default priority (MEDIUM).
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@ -333,7 +345,7 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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EGL_NO_CONTEXT, attribs);
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if (egl->context == EGL_NO_CONTEXT) {
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wlr_log(WLR_ERROR, "Failed to create EGL context");
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goto error;
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return false;
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}
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if (request_high_priority) {
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@ -347,6 +359,105 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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}
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}
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return true;
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}
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struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
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const EGLint *config_attribs) {
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struct wlr_egl *egl = egl_create();
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if (egl == NULL) {
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wlr_log(WLR_ERROR, "Failed to create EGL context");
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return NULL;
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}
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if (!egl_init(egl, platform, remote_display, config_attribs)) {
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wlr_log(WLR_ERROR, "Failed to initialize EGL context");
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eglMakeCurrent(EGL_NO_DISPLAY, EGL_NO_SURFACE, EGL_NO_SURFACE,
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EGL_NO_CONTEXT);
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if (egl->display) {
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eglTerminate(egl->display);
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}
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free(egl);
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eglReleaseThread();
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return NULL;
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}
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return egl;
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}
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static bool device_has_name(const drmDevice *device, const char *name) {
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for (size_t i = 0; i < DRM_NODE_MAX; i++) {
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if (!(device->available_nodes & (1 << i))) {
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continue;
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}
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if (strcmp(device->nodes[i], name) == 0) {
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return true;
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}
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}
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return false;
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}
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struct wlr_egl *wlr_egl_create_from_drm_fd(int drm_fd) {
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struct wlr_egl *egl = egl_create();
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if (egl == NULL) {
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wlr_log(WLR_ERROR, "Failed to create EGL context");
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return NULL;
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}
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if (egl->procs.eglQueryDevicesEXT == NULL) {
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wlr_log(WLR_ERROR, "EGL_EXT_device_enumeration not supported");
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goto error;
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}
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EGLint nb_devices = 0;
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if (!egl->procs.eglQueryDevicesEXT(0, NULL, &nb_devices)) {
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wlr_log(WLR_ERROR, "Failed to query EGL devices");
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goto error;
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}
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EGLDeviceEXT *devices = calloc(nb_devices, sizeof(EGLDeviceEXT));
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if (devices == NULL) {
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wlr_log_errno(WLR_ERROR, "Failed to allocate device list");
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goto error;
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}
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if (!egl->procs.eglQueryDevicesEXT(nb_devices, devices, &nb_devices)) {
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wlr_log(WLR_ERROR, "Failed to query EGL devices");
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goto error;
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}
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drmDevice *device = NULL;
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int ret = drmGetDevice(drm_fd, &device);
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if (ret < 0) {
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wlr_log(WLR_ERROR, "Failed to get DRM device: %s", strerror(-ret));
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goto error;
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}
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EGLDeviceEXT egl_device = NULL;
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for (int i = 0; i < nb_devices; i++) {
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const char *egl_device_name = egl->procs.eglQueryDeviceStringEXT(
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devices[i], EGL_DRM_DEVICE_FILE_EXT);
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if (egl_device_name == NULL) {
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continue;
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}
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if (device_has_name(device, egl_device_name)) {
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wlr_log(WLR_DEBUG, "Using EGL device %s", egl_device_name);
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egl_device = devices[i];
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break;
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}
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}
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if (egl_device == NULL) {
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wlr_log(WLR_ERROR, "Failed to find EGLDeviceEXT");
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goto error;
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}
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if (!egl_init(egl, EGL_PLATFORM_DEVICE_EXT, egl_device, NULL)) {
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wlr_log(WLR_ERROR, "Failed to initialize EGL context");
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goto error;
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}
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return egl;
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error:
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@ -354,6 +465,7 @@ error:
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if (egl->display) {
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eglTerminate(egl->display);
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}
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free(egl);
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eglReleaseThread();
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return NULL;
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}
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@ -739,18 +851,6 @@ bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface) {
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return eglDestroySurface(egl->display, surface);
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}
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static bool device_has_name(const drmDevice *device, const char *name) {
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for (size_t i = 0; i < DRM_NODE_MAX; i++) {
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if (!(device->available_nodes & (1 << i))) {
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continue;
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}
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if (strcmp(device->nodes[i], name) == 0) {
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return true;
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}
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}
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return false;
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}
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static char *get_render_name(const char *name) {
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uint32_t flags = 0;
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int devices_len = drmGetDevices2(flags, NULL, 0);
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@ -251,22 +251,12 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
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}
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struct wlr_renderer *wlr_renderer_autocreate_with_drm_fd(int drm_fd) {
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struct gbm_device *gbm_device = gbm_create_device(drm_fd);
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if (!gbm_device) {
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wlr_log(WLR_ERROR, "Failed to create GBM device");
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return NULL;
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}
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struct wlr_egl *egl = wlr_egl_create(EGL_PLATFORM_GBM_KHR, gbm_device,
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NULL);
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struct wlr_egl *egl = wlr_egl_create_from_drm_fd(drm_fd);
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if (egl == NULL) {
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wlr_log(WLR_ERROR, "Could not initialize EGL");
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gbm_device_destroy(gbm_device);
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return NULL;
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}
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egl->gbm_device = gbm_device;
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struct wlr_renderer *renderer = wlr_gles2_renderer_create(egl);
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if (!renderer) {
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wlr_log(WLR_ERROR, "Failed to create GLES2 renderer");
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