diff options
| -rw-r--r-- | src/egl/drivers/glx/Makefile | 74 | ||||
| -rw-r--r-- | src/egl/drivers/glx/egl_glx.c | 574 |
2 files changed, 648 insertions, 0 deletions
diff --git a/src/egl/drivers/glx/Makefile b/src/egl/drivers/glx/Makefile new file mode 100644 index 0000000000..3cd5276513 --- /dev/null +++ b/src/egl/drivers/glx/Makefile @@ -0,0 +1,74 @@ +# src/egl/drivers/glx/Makefile + +# Build XEGL DRI driver loader library: egl_glx.so + + +TOP = ../../../.. +include $(TOP)/configs/current + + +EXTRA_DEFINES = -DDEFAULT_DRIVER_DIR=\"$(DRI_DRIVER_SEARCH_DIR)\" + +DRIVER_NAME = egl_glx.so + + +INCLUDE_DIRS = \ + -I. \ + -I/usr/include \ + $(shell pkg-config --cflags-only-I libdrm) \ + -I$(TOP)/include \ + -I$(TOP)/include/GL/internal \ + -I$(TOP)/src/mesa/glapi \ + -I$(TOP)/src/mesa/drivers/dri/common \ + -I$(TOP)/src/mesa/main \ + -I$(TOP)/src/mesa \ + -I$(TOP)/src/egl/main \ + -I$(TOP)/src/glx/x11 + +SOURCES = egl_glx.c + +OBJECTS = $(SOURCES:.c=.o) + +DRM_LIB = `pkg-config --libs libdrm` + +MISC_LIBS = -ldl -lXext -lGL + + +.c.o: + $(CC) -c $(INCLUDE_DIRS) $(CFLAGS) $(EXTRA_DEFINES) $< -o $@ + + +.PHONY: library + + +default: depend library Makefile + + +library: $(TOP)/$(LIB_DIR)/$(DRIVER_NAME) + + +# Make the egl_glx.so library +$(TOP)/$(LIB_DIR)/$(DRIVER_NAME): $(OBJECTS) + $(TOP)/bin/mklib -o $(DRIVER_NAME) \ + -noprefix \ + -major 1 -minor 0 \ + -L$(TOP)/$(LIB_DIR) \ + -install $(TOP)/$(LIB_DIR) \ + $(OBJECTS) $(DRM_LIB) $(MISC_LIBS) + + +clean: + rm -f *.o + rm -f *.so + rm -f depend depend.bak + + +depend: $(SOURCES) $(HEADERS) + @ echo "running $(MKDEP)" + @ rm -f depend + @ touch depend + $(MKDEP) $(MKDEP_OPTIONS) $(DEFINES) $(INCLUDE_DIRS) \ + $(SOURCES) $(HEADERS) >/dev/null 2>/dev/null + +include depend +# DO NOT DELETE diff --git a/src/egl/drivers/glx/egl_glx.c b/src/egl/drivers/glx/egl_glx.c new file mode 100644 index 0000000000..4274493a5b --- /dev/null +++ b/src/egl/drivers/glx/egl_glx.c @@ -0,0 +1,574 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + +/** + * This is an EGL driver that wraps GLX. This gives the benefit of being + * completely agnostic of the direct rendering implementation. + * + * Authors: Alan Hourihane <alanh@tungstengraphics.com> + */ + +/* + * TODO: + * + * Add GLXFBConfig support + * Pbuffer & Pixmap support + * test eglBind/ReleaseTexImage + */ + + +#include <assert.h> +#include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include "dlfcn.h" +#include <X11/Xlib.h> +#include <GL/gl.h> +#include "glxclient.h" + +#define _EGL_PLATFORM_X + +#include "eglconfig.h" +#include "eglcontext.h" +#include "egldisplay.h" +#include "egldriver.h" +#include "eglglobals.h" +#include "eglhash.h" +#include "egllog.h" +#include "eglsurface.h" + +#include <GL/gl.h> + +#define CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T)) + +static const EGLint all_apis = (EGL_OPENGL_ES_BIT | + EGL_OPENGL_ES2_BIT | + EGL_OPENVG_BIT | + EGL_OPENGL_BIT); + +struct visual_attribs +{ + /* X visual attribs */ + int id; + int klass; + int depth; + int redMask, greenMask, blueMask; + int colormapSize; + int bitsPerRGB; + + /* GL visual attribs */ + int supportsGL; + int transparentType; + int transparentRedValue; + int transparentGreenValue; + int transparentBlueValue; + int transparentAlphaValue; + int transparentIndexValue; + int bufferSize; + int level; + int render_type; + int doubleBuffer; + int stereo; + int auxBuffers; + int redSize, greenSize, blueSize, alphaSize; + int depthSize; + int stencilSize; + int accumRedSize, accumGreenSize, accumBlueSize, accumAlphaSize; + int numSamples, numMultisample; + int visualCaveat; +}; + +/** subclass of _EGLDriver */ +struct GLX_egl_driver +{ + _EGLDriver Base; /**< base class */ + + XVisualInfo *visuals; + + /* GLXFBConfig *fbconfigs - todo */ +}; + + +/** subclass of _EGLContext */ +struct GLX_egl_context +{ + _EGLContext Base; /**< base class */ + + GLXContext context; +}; + + +/** subclass of _EGLSurface */ +struct GLX_egl_surface +{ + _EGLSurface Base; /**< base class */ + + GLXDrawable drawable; +}; + + +/** subclass of _EGLConfig */ +struct GLX_egl_config +{ + _EGLConfig Base; /**< base class */ +}; + +/** cast wrapper */ +static struct GLX_egl_driver * +GLX_egl_driver(_EGLDriver *drv) +{ + return (struct GLX_egl_driver *) drv; +} + +static struct GLX_egl_context * +GLX_egl_context(_EGLContext *ctx) +{ + return (struct GLX_egl_context *) ctx; +} + +static struct GLX_egl_surface * +GLX_egl_surface(_EGLSurface *surf) +{ + return (struct GLX_egl_surface *) surf; +} + +static GLboolean +get_visual_attribs(Display *dpy, XVisualInfo *vInfo, + struct visual_attribs *attribs) +{ + const char *ext = glXQueryExtensionsString(dpy, vInfo->screen); + int rgba; + + memset(attribs, 0, sizeof(struct visual_attribs)); + + attribs->id = vInfo->visualid; +#if defined(__cplusplus) || defined(c_plusplus) + attribs->klass = vInfo->c_class; +#else + attribs->klass = vInfo->class; +#endif + attribs->depth = vInfo->depth; + attribs->redMask = vInfo->red_mask; + attribs->greenMask = vInfo->green_mask; + attribs->blueMask = vInfo->blue_mask; + attribs->colormapSize = vInfo->colormap_size; + attribs->bitsPerRGB = vInfo->bits_per_rgb; + + if (glXGetConfig(dpy, vInfo, GLX_USE_GL, &attribs->supportsGL) != 0 || + !attribs->supportsGL) + return GL_FALSE; + glXGetConfig(dpy, vInfo, GLX_BUFFER_SIZE, &attribs->bufferSize); + glXGetConfig(dpy, vInfo, GLX_LEVEL, &attribs->level); + glXGetConfig(dpy, vInfo, GLX_RGBA, &rgba); + if (!rgba) + return GL_FALSE; + attribs->render_type = GLX_RGBA_BIT; + + glXGetConfig(dpy, vInfo, GLX_DOUBLEBUFFER, &attribs->doubleBuffer); + glXGetConfig(dpy, vInfo, GLX_STEREO, &attribs->stereo); + glXGetConfig(dpy, vInfo, GLX_AUX_BUFFERS, &attribs->auxBuffers); + glXGetConfig(dpy, vInfo, GLX_RED_SIZE, &attribs->redSize); + glXGetConfig(dpy, vInfo, GLX_GREEN_SIZE, &attribs->greenSize); + glXGetConfig(dpy, vInfo, GLX_BLUE_SIZE, &attribs->blueSize); + glXGetConfig(dpy, vInfo, GLX_ALPHA_SIZE, &attribs->alphaSize); + glXGetConfig(dpy, vInfo, GLX_DEPTH_SIZE, &attribs->depthSize); + glXGetConfig(dpy, vInfo, GLX_STENCIL_SIZE, &attribs->stencilSize); + glXGetConfig(dpy, vInfo, GLX_ACCUM_RED_SIZE, &attribs->accumRedSize); + glXGetConfig(dpy, vInfo, GLX_ACCUM_GREEN_SIZE, &attribs->accumGreenSize); + glXGetConfig(dpy, vInfo, GLX_ACCUM_BLUE_SIZE, &attribs->accumBlueSize); + glXGetConfig(dpy, vInfo, GLX_ACCUM_ALPHA_SIZE, &attribs->accumAlphaSize); + + /* get transparent pixel stuff */ + glXGetConfig(dpy, vInfo,GLX_TRANSPARENT_TYPE, &attribs->transparentType); + if (attribs->transparentType == GLX_TRANSPARENT_RGB) { + glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_RED_VALUE, &attribs->transparentRedValue); + glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_GREEN_VALUE, &attribs->transparentGreenValue); + glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_BLUE_VALUE, &attribs->transparentBlueValue); + glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_ALPHA_VALUE, &attribs->transparentAlphaValue); + } + else if (attribs->transparentType == GLX_TRANSPARENT_INDEX) { + glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_INDEX_VALUE, &attribs->transparentIndexValue); + } + + /* multisample attribs */ +#ifdef GLX_ARB_multisample + if (ext && strstr(ext, "GLX_ARB_multisample")) { + glXGetConfig(dpy, vInfo, GLX_SAMPLE_BUFFERS_ARB, &attribs->numMultisample); + glXGetConfig(dpy, vInfo, GLX_SAMPLES_ARB, &attribs->numSamples); + } +#endif + else { + attribs->numSamples = 0; + attribs->numMultisample = 0; + } + +#if defined(GLX_EXT_visual_rating) + if (ext && strstr(ext, "GLX_EXT_visual_rating")) { + glXGetConfig(dpy, vInfo, GLX_VISUAL_CAVEAT_EXT, &attribs->visualCaveat); + } + else { + attribs->visualCaveat = GLX_NONE_EXT; + } +#else + attribs->visualCaveat = 0; +#endif + + return GL_TRUE; +} + +static EGLBoolean +create_configs(_EGLDisplay *disp, struct GLX_egl_driver *GLX_drv) +{ + XVisualInfo theTemplate; + int numVisuals; + long mask; + int i; + struct visual_attribs attribs; + + /* get list of all visuals on this screen */ + theTemplate.screen = DefaultScreen(disp->Xdpy); + mask = VisualScreenMask; + GLX_drv->visuals = XGetVisualInfo(disp->Xdpy, mask, &theTemplate, &numVisuals); + + for (i = 0; i < numVisuals; i++) { + struct GLX_egl_config *config; + + if (!get_visual_attribs(disp->Xdpy, &GLX_drv->visuals[i], &attribs)) + continue; + + if (attribs.doubleBuffer) { + config = CALLOC_STRUCT(GLX_egl_config); + + _eglInitConfig(&config->Base, i+1); + SET_CONFIG_ATTRIB(&config->Base, EGL_NATIVE_VISUAL_ID, attribs.id); + SET_CONFIG_ATTRIB(&config->Base, EGL_BUFFER_SIZE, attribs.bufferSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_RED_SIZE, attribs.redSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_GREEN_SIZE, attribs.greenSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_BLUE_SIZE, attribs.blueSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_ALPHA_SIZE, attribs.alphaSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_DEPTH_SIZE, attribs.depthSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_STENCIL_SIZE, attribs.stencilSize); + SET_CONFIG_ATTRIB(&config->Base, EGL_SAMPLES, attribs.numSamples); + SET_CONFIG_ATTRIB(&config->Base, EGL_SAMPLE_BUFFERS, attribs.numMultisample); + SET_CONFIG_ATTRIB(&config->Base, EGL_CONFORMANT, all_apis); + SET_CONFIG_ATTRIB(&config->Base, EGL_RENDERABLE_TYPE, all_apis); + SET_CONFIG_ATTRIB(&config->Base, EGL_SURFACE_TYPE, + (EGL_WINDOW_BIT /*| EGL_PBUFFER_BIT | EGL_PIXMAP_BIT*/)); + + /* XXX possibly other things to init... */ + + _eglAddConfig(disp, &config->Base); + } + } + + return EGL_TRUE; +} + +/** + * Called via eglInitialize(), GLX_drv->API.Initialize(). + */ +static EGLBoolean +GLX_eglInitialize(_EGLDriver *drv, EGLDisplay dpy, + EGLint *minor, EGLint *major) +{ + struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv); + _EGLDisplay *disp = _eglLookupDisplay(dpy); + + _eglLog(_EGL_DEBUG, "XDRI: eglInitialize"); + + if (!disp->Xdpy) { + disp->Xdpy = XOpenDisplay(NULL); + if (!disp->Xdpy) { + _eglLog(_EGL_WARNING, "XDRI: XOpenDisplay failed"); + return EGL_FALSE; + } + } + + GLX_drv->Base.Initialized = EGL_TRUE; + + GLX_drv->Base.Name = "GLX"; + + /* we're supporting EGL 1.4 */ + *minor = 1; + *major = 4; + + create_configs(disp, GLX_drv); + + return EGL_TRUE; +} + + +/** + * Called via eglTerminate(), drv->API.Terminate(). + */ +static EGLBoolean +GLX_eglTerminate(_EGLDriver *drv, EGLDisplay dpy) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + + _eglLog(_EGL_DEBUG, "XDRI: eglTerminate"); + +// XCloseDisplay(disp->Xdpy); + + return EGL_TRUE; +} + + +/** + * Called via eglCreateContext(), drv->API.CreateContext(). + */ +static EGLContext +GLX_eglCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, + EGLContext share_list, const EGLint *attrib_list) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + struct GLX_egl_context *GLX_ctx = CALLOC_STRUCT(GLX_egl_context); + struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv); + struct GLX_egl_context *GLX_ctx_shared = NULL; + _EGLConfig *conf; + + if (!GLX_ctx) + return EGL_NO_CONTEXT; + + if (!_eglInitContext(drv, dpy, &GLX_ctx->Base, config, attrib_list)) { + free(GLX_ctx); + return EGL_NO_CONTEXT; + } + + if (share_list != EGL_NO_CONTEXT) { + _EGLContext *shareCtx = _eglLookupContext(share_list); + if (!shareCtx) { + _eglError(EGL_BAD_CONTEXT, "eglCreateContext(share_list)"); + return EGL_FALSE; + } + GLX_ctx_shared = GLX_egl_context(shareCtx); + } + + conf = _eglLookupConfig(drv, dpy, config); + assert(conf); + + GLX_ctx->context = glXCreateContext(disp->Xdpy, &GLX_drv->visuals[(int)config-1], GLX_ctx_shared ? GLX_ctx_shared->context : NULL, GL_TRUE); + if (!GLX_ctx->context) + return EGL_FALSE; + + /* need to have a direct rendering context */ + if (!glXIsDirect(disp->Xdpy, GLX_ctx->context)) + return EGL_FALSE; + + return _eglGetContextHandle(&GLX_ctx->Base); +} + + +/** + * Called via eglMakeCurrent(), drv->API.MakeCurrent(). + */ +static EGLBoolean +GLX_eglMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, EGLSurface d, + EGLSurface r, EGLContext context) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLContext *ctx = _eglLookupContext(context); + _EGLSurface *dsurf = _eglLookupSurface(d); + _EGLSurface *rsurf = _eglLookupSurface(r); + struct GLX_egl_surface *GLX_dsurf = GLX_egl_surface(dsurf); + struct GLX_egl_surface *GLX_rsurf = GLX_egl_surface(rsurf); + struct GLX_egl_context *GLX_ctx = GLX_egl_context(ctx); + + if (!_eglMakeCurrent(drv, dpy, d, r, context)) + return EGL_FALSE; + +// if (!glXMakeContextCurrent(disp->Xdpy, GLX_dsurf->drawable, GLX_rsurf->drawable, GLX_ctx->context)) + if (!glXMakeCurrent(disp->Xdpy, GLX_dsurf ? GLX_dsurf->drawable : 0, GLX_ctx ? GLX_ctx->context : NULL)) + return EGL_FALSE; + + return EGL_TRUE; +} + +/** Get size of given window */ +static Status +get_drawable_size(Display *dpy, Drawable d, uint *width, uint *height) +{ + Window root; + Status stat; + int xpos, ypos; + unsigned int w, h, bw, depth; + stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); + *width = w; + *height = h; + return stat; +} + +/** + * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface(). + */ +static EGLSurface +GLX_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, + NativeWindowType window, const EGLint *attrib_list) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + struct GLX_egl_surface *GLX_surf; + uint width, height; + + GLX_surf = CALLOC_STRUCT(GLX_egl_surface); + if (!GLX_surf) + return EGL_NO_SURFACE; + + if (!_eglInitSurface(drv, dpy, &GLX_surf->Base, EGL_WINDOW_BIT, + config, attrib_list)) { + free(GLX_surf); + return EGL_FALSE; + } + + _eglSaveSurface(&GLX_surf->Base); + + GLX_surf->drawable = window; + get_drawable_size(disp->Xdpy, window, &width, &height); + GLX_surf->Base.Width = width; + GLX_surf->Base.Height = height; + + return _eglGetSurfaceHandle(&GLX_surf->Base); +} + +static EGLBoolean +GLX_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLSurface *surf = _eglLookupSurface(surface); + return EGL_TRUE; + if (surf) { + _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surface); + if (surf->IsBound) { + surf->DeletePending = EGL_TRUE; + } + else { + free(surf); + } + + return EGL_TRUE; + } + else { + _eglError(EGL_BAD_SURFACE, "eglDestroySurface"); + return EGL_FALSE; + } +} + + +static EGLBoolean +GLX_eglBindTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, + EGLint buffer) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLSurface *surf = _eglLookupSurface(surface); + struct GLX_egl_surface *GLX_surf = GLX_egl_surface(surf); + + /* buffer ?? */ + glXBindTexImageEXT(disp->Xdpy, GLX_surf->drawable, GLX_FRONT_LEFT_EXT, NULL); + + return EGL_TRUE; +} + + +static EGLBoolean +GLX_eglReleaseTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, + EGLint buffer) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLSurface *surf = _eglLookupSurface(surface); + struct GLX_egl_surface *GLX_surf = GLX_egl_surface(surf); + + /* buffer ?? */ + glXReleaseTexImageEXT(disp->Xdpy, GLX_surf->drawable, GLX_FRONT_LEFT_EXT); + + return EGL_TRUE; +} + + +static EGLBoolean +GLX_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw) +{ + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLSurface *surf = _eglLookupSurface(draw); + struct GLX_egl_surface *GLX_surf = GLX_egl_surface(surf); + + _eglLog(_EGL_DEBUG, "XDRI: EGL SwapBuffers 0x%x",draw); + + /* error checking step: */ + if (!_eglSwapBuffers(drv, dpy, draw)) + return EGL_FALSE; + + glXSwapBuffers(disp->Xdpy, GLX_surf->drawable); + + return EGL_TRUE; +} + +/* + * Called from eglGetProcAddress() via drv->API.GetProcAddress(). + */ +static _EGLProc +GLX_eglGetProcAddress(const char *procname) +{ + return (_EGLProc)glXGetProcAddress((const GLubyte *)procname); +} + + +/** + * This is the main entrypoint into the driver, called by libEGL. + * Create a new _EGLDriver object and init its dispatch table. + */ +_EGLDriver * +_eglMain(_EGLDisplay *disp, const char *args) +{ + struct GLX_egl_driver *GLX_drv = CALLOC_STRUCT(GLX_egl_driver); + if (!GLX_drv) + return NULL; + + _eglInitDriverFallbacks(&GLX_drv->Base); + GLX_drv->Base.API.Initialize = GLX_eglInitialize; + GLX_drv->Base.API.Terminate = GLX_eglTerminate; + GLX_drv->Base.API.CreateContext = GLX_eglCreateContext; + GLX_drv->Base.API.MakeCurrent = GLX_eglMakeCurrent; + GLX_drv->Base.API.CreateWindowSurface = GLX_eglCreateWindowSurface; + GLX_drv->Base.API.DestroySurface = GLX_eglDestroySurface; + GLX_drv->Base.API.BindTexImage = GLX_eglBindTexImage; + GLX_drv->Base.API.ReleaseTexImage = GLX_eglReleaseTexImage; + GLX_drv->Base.API.SwapBuffers = GLX_eglSwapBuffers; + GLX_drv->Base.API.GetProcAddress = GLX_eglGetProcAddress; + + GLX_drv->Base.ClientAPIsMask = all_apis; + GLX_drv->Base.Name = "GLX"; + + _eglLog(_EGL_DEBUG, "GLX: main(%s)", args); + + /* set new DRI path to pick up EGL version (no mesa code), but don't + * override if one is already set. + */ + setenv("LIBGL_DRIVERS_PATH", DEFAULT_DRIVER_DIR"/egl", 0); + + return &GLX_drv->Base; +} |