/* * Clutter. * * An OpenGL based 'interactive canvas' library. * * Authored By Johan Bilien * Matthew Allum * Robert Bragg * * Copyright (C) 2007 OpenedHand * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* TODO: * - Automagically handle named pixmaps, and window resizes (i.e * essentially handle window id's being passed in) * - Dont bomb out when an invalid pixmap is passed (trap damage handling) * - track and trap referenced pixmap/win getting destroyed */ /** * SECTION:clutter-glx-texture-pixmap * @short_description: A texture which displays the content of an X Pixmap. * * #ClutterGLXTexturePixmap is a class for displaying the content of an * X Pixmap as a ClutterActor. Used together with the X Composite extension, * it allows to display the content of X Windows inside Clutter. * * The class requires the GLX_EXT_texture_from_pixmap OpenGL extension * (http://people.freedesktop.org/~davidr/GLX_EXT_texture_from_pixmap.txt) */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "../x11/clutter-x11-texture-pixmap.h" #include "clutter-glx-texture-pixmap.h" #include "clutter-glx.h" #include "clutter-backend-glx.h" #include "../clutter-util.h" #include "../clutter-debug.h" #include "cogl/cogl.h" typedef void (*BindTexImage) (Display *display, GLXDrawable drawable, int buffer, int *attribList); typedef void (*ReleaseTexImage) (Display *display, GLXDrawable drawable, int buffer); static BindTexImage _gl_bind_tex_image = NULL; static ReleaseTexImage _gl_release_tex_image = NULL; static gboolean _have_tex_from_pixmap_ext = FALSE; static gboolean _ext_check_done = FALSE; struct _ClutterGLXTexturePixmapPrivate { COGLenum target_type; guint texture_id; GLXPixmap glx_pixmap; gboolean bound; }; static void clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture, gint x, gint y, gint width, gint height); static void clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *tex); static ClutterX11TexturePixmapClass *parent_class = NULL; G_DEFINE_TYPE (ClutterGLXTexturePixmap, \ clutter_glx_texture_pixmap, \ CLUTTER_X11_TYPE_TEXTURE_PIXMAP); static gboolean texture_bind (ClutterGLXTexturePixmap *tex) { GLuint handle = 0; GLenum target = 0; CoglHandle cogl_tex; cogl_tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE(tex)); if (!cogl_texture_get_gl_texture (cogl_tex, &handle, &target)) return FALSE; glEnable(target); /* FIXME: fire off an error here? */ glBindTexture (target, handle); return TRUE; } static void clutter_glx_texture_pixmap_init (ClutterGLXTexturePixmap *self) { ClutterGLXTexturePixmapPrivate *priv; priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, CLUTTER_GLX_TYPE_TEXTURE_PIXMAP, ClutterGLXTexturePixmapPrivate); } static void clutter_glx_texture_pixmap_dispose (GObject *object) { ClutterGLXTexturePixmapPrivate *priv; priv = CLUTTER_GLX_TEXTURE_PIXMAP (object)->priv; if (priv->glx_pixmap != None) { clutter_x11_trap_x_errors (); glXDestroyGLXPixmap (clutter_x11_get_default_display(), priv->glx_pixmap); XSync (clutter_x11_get_default_display(), FALSE); clutter_x11_untrap_x_errors (); priv->glx_pixmap = None; } G_OBJECT_CLASS (clutter_glx_texture_pixmap_parent_class)->dispose (object); } static void clutter_glx_texture_pixmap_notify (GObject *object, GParamSpec *pspec) { if (g_str_equal (pspec->name, "pixmap")) { ClutterGLXTexturePixmap *texture = CLUTTER_GLX_TEXTURE_PIXMAP (object); clutter_glx_texture_pixmap_create_glx_pixmap (texture); } } static void create_cogl_texture (ClutterTexture *texture, guint width, guint height) { CoglHandle handle; handle = cogl_texture_new_with_size (width, height, -1, COGL_PIXEL_FORMAT_RGBA_8888|COGL_BGR_BIT); if (handle) { clutter_texture_set_cogl_texture (texture, handle); CLUTTER_ACTOR_SET_FLAGS (texture, CLUTTER_ACTOR_REALIZED); clutter_glx_texture_pixmap_update_area (CLUTTER_X11_TEXTURE_PIXMAP (texture), 0, 0, width, height); } else g_warning ("unable to realize"); } static void clutter_glx_texture_pixmap_realize (ClutterActor *actor) { ClutterGLXTexturePixmapPrivate *priv; Pixmap pixmap; guint pixmap_width, pixmap_height; priv = CLUTTER_GLX_TEXTURE_PIXMAP (actor)->priv; if (!_have_tex_from_pixmap_ext || !clutter_feature_available (COGL_FEATURE_TEXTURE_NPOT)) { /* Fall back */ CLUTTER_NOTE (TEXTURE, "texture from pixmap appears unsupported"); CLUTTER_NOTE (TEXTURE, "Falling back to X11 manual mechansim"); /* FIXME: Also check for sliced npots ? */ CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)-> realize (actor); return; } g_object_get (actor, "pixmap", &pixmap, "pixmap-width", &pixmap_width, "pixmap-height", &pixmap_height, NULL); if (!pixmap) return; create_cogl_texture (CLUTTER_TEXTURE (actor), pixmap_width, pixmap_height); CLUTTER_NOTE (TEXTURE, "texture pixmap realised"); } static void clutter_glx_texture_pixmap_unrealize (ClutterActor *actor) { ClutterGLXTexturePixmapPrivate *priv; Display *dpy; priv = CLUTTER_GLX_TEXTURE_PIXMAP (actor)->priv; dpy = clutter_x11_get_default_display(); if (!_have_tex_from_pixmap_ext) { CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)-> unrealize (actor); return; } if (!CLUTTER_ACTOR_IS_REALIZED (actor)) return; if (priv->bound && priv->glx_pixmap) { clutter_x11_trap_x_errors (); (_gl_release_tex_image) (dpy, priv->glx_pixmap, GLX_FRONT_LEFT_EXT); XSync (clutter_x11_get_default_display(), FALSE); clutter_x11_untrap_x_errors (); } CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED); } static GLXFBConfig * get_fbconfig_for_depth (guint depth) { GLXFBConfig *fbconfigs, *ret = NULL; int n_elements, i, found; Display *dpy; int db, stencil, alpha, mipmap, rgba, value; dpy = clutter_x11_get_default_display (); fbconfigs = glXGetFBConfigs (dpy, clutter_x11_get_default_screen (), &n_elements); db = G_MAXSHORT; stencil = G_MAXSHORT; mipmap = 0; rgba = 0; found = n_elements; for (i = 0; i < n_elements; i++) { XVisualInfo *vi; int visual_depth; vi = glXGetVisualFromFBConfig (dpy, fbconfigs[i]); if (vi == NULL) continue; visual_depth = vi->depth; XFree (vi); if (visual_depth != depth) continue; glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_ALPHA_SIZE, &alpha); glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_BUFFER_SIZE, &value); if (value != depth && (value - alpha) != depth) continue; value = 0; if (depth == 32) { glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_BIND_TO_TEXTURE_RGBA_EXT, &value); if (value) rgba = 1; } if (!value) { if (rgba) continue; glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_BIND_TO_TEXTURE_RGB_EXT, &value); if (!value) continue; } glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_DOUBLEBUFFER, &value); if (value > db) continue; db = value; glXGetFBConfigAttrib (dpy, fbconfigs[i], GLX_STENCIL_SIZE, &value); if (value > stencil) continue; stencil = value; found = i; } if (found != n_elements) { ret = g_malloc (sizeof (GLXFBConfig)); *ret = fbconfigs[found]; } if (n_elements) XFree (fbconfigs); return ret; } static void clutter_glx_texture_pixmap_free_glx_pixmap (ClutterGLXTexturePixmap *texture) { ClutterGLXTexturePixmapPrivate *priv = texture->priv; Display *dpy; dpy = clutter_x11_get_default_display (); if (_have_tex_from_pixmap_ext && CLUTTER_ACTOR_IS_REALIZED (texture) && priv->bound) { texture_bind (texture); clutter_x11_trap_x_errors (); (_gl_release_tex_image) (dpy, priv->glx_pixmap, GLX_FRONT_LEFT_EXT); XSync (clutter_x11_get_default_display(), FALSE); if (clutter_x11_untrap_x_errors ()) CLUTTER_NOTE (TEXTURE, "Failed to release?"); CLUTTER_NOTE (TEXTURE, "Destroyed pxm: %li", priv->glx_pixmap); } clutter_x11_trap_x_errors (); glXDestroyGLXPixmap (dpy, priv->glx_pixmap); XSync (dpy, FALSE); clutter_x11_untrap_x_errors (); } static void clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *texture) { ClutterGLXTexturePixmapPrivate *priv = texture->priv; GLXPixmap glx_pixmap; int attribs[7], i = 0; GLXFBConfig *fbconfig; Display *dpy; guint depth; Pixmap pixmap; guint pixmap_width, pixmap_height; ClutterBackendGLX *backend_glx; CLUTTER_NOTE (TEXTURE, "Creating GLXPixmap"); backend_glx = CLUTTER_BACKEND_GLX(clutter_get_default_backend ()); dpy = clutter_x11_get_default_display (); g_object_get (texture, "pixmap-width", &pixmap_width, "pixmap-height", &pixmap_height, "pixmap-depth", &depth, "pixmap", &pixmap, NULL); if (!pixmap) return; fbconfig = get_fbconfig_for_depth (depth); if (!fbconfig) { g_warning ("Could not find an FBConfig for selected pixmap"); return; } attribs[i++] = GLX_TEXTURE_FORMAT_EXT; if (depth == 24) { attribs[i++] = GLX_TEXTURE_FORMAT_RGB_EXT; } else if (depth == 32) { attribs[i++] = GLX_TEXTURE_FORMAT_RGBA_EXT; } else { g_warning ("Pixmap with depth bellow 24 are not supported"); return; } attribs[i++] = GLX_MIPMAP_TEXTURE_EXT; attribs[i++] = 0; attribs[i++] = GLX_TEXTURE_TARGET_EXT; attribs[i++] = GLX_TEXTURE_2D_EXT; attribs[i++] = None; clutter_x11_trap_x_errors (); glx_pixmap = glXCreatePixmap (dpy, *fbconfig, pixmap, attribs); XSync (dpy, FALSE); if (clutter_x11_untrap_x_errors ()) CLUTTER_NOTE (TEXTURE, "Failed to create GLXPixmap"); g_free (fbconfig); if (glx_pixmap != None) { if (priv->glx_pixmap) clutter_glx_texture_pixmap_free_glx_pixmap (texture); priv->glx_pixmap = glx_pixmap; if (!clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture))) { create_cogl_texture (texture, pixmap_width, pixmap_height); } CLUTTER_NOTE (TEXTURE, "Created GLXPixmap"); return; } } static void clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture, gint x, gint y, gint width, gint height) { ClutterGLXTexturePixmapPrivate *priv; Display *dpy; CLUTTER_NOTE (TEXTURE, "Updaing texture pixmap"); priv = CLUTTER_GLX_TEXTURE_PIXMAP (texture)->priv; dpy = clutter_x11_get_default_display(); if (!CLUTTER_ACTOR_IS_REALIZED (texture)) return; if (!_have_tex_from_pixmap_ext) { parent_class->update_area (texture, x, y, width, height); return; } if (_have_tex_from_pixmap_ext) { Display *dpy; dpy = clutter_x11_get_default_display(); if (texture_bind (CLUTTER_GLX_TEXTURE_PIXMAP(texture))) { clutter_x11_trap_x_errors (); (_gl_bind_tex_image) (dpy, priv->glx_pixmap, GLX_FRONT_LEFT_EXT, NULL); XSync (clutter_x11_get_default_display(), FALSE); /* Note above fires X error for non name pixmaps - but * things still seem to work - i.e pixmap updated */ if (clutter_x11_untrap_x_errors ()) CLUTTER_NOTE (TEXTURE, "Update bind_tex_image failed"); priv->bound = TRUE; } else g_warning ("Failed to bind initial tex"); if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(texture))) clutter_actor_queue_redraw (CLUTTER_ACTOR(texture)); } } static void clutter_glx_texture_pixmap_class_init (ClutterGLXTexturePixmapClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); ClutterX11TexturePixmapClass *x11_texture_class = CLUTTER_X11_TEXTURE_PIXMAP_CLASS (klass); g_type_class_add_private (klass, sizeof (ClutterGLXTexturePixmapPrivate)); parent_class = g_type_class_peek_parent(klass); object_class->dispose = clutter_glx_texture_pixmap_dispose; object_class->notify = clutter_glx_texture_pixmap_notify; actor_class->realize = clutter_glx_texture_pixmap_realize; actor_class->unrealize = clutter_glx_texture_pixmap_unrealize; x11_texture_class->update_area = clutter_glx_texture_pixmap_update_area; if (_ext_check_done == FALSE) { const gchar *glx_extensions = NULL; glx_extensions = glXQueryExtensionsString (clutter_x11_get_default_display (), clutter_x11_get_default_screen ()); /* Check for the texture from pixmap extension */ if (cogl_check_extension ("GLX_EXT_texture_from_pixmap", glx_extensions)) { _gl_bind_tex_image = (BindTexImage)cogl_get_proc_address ("glXBindTexImageEXT"); _gl_release_tex_image = (ReleaseTexImage)cogl_get_proc_address ("glXReleaseTexImageEXT"); if (_gl_bind_tex_image && _gl_release_tex_image) _have_tex_from_pixmap_ext = TRUE; } _ext_check_done = TRUE; } } /** * clutter_glx_texture_pixmap_new_with_pixmap: * @pixmap: the X Pixmap to which this texture should be bound * @width: the width of the X pixmap * @height: the height of the X pixmap * @depth: the depth of the X pixmap * * Return value: A new #ClutterGLXTexturePixmap bound to the given X Pixmap * * Since: 0.8 **/ ClutterActor * clutter_glx_texture_pixmap_new_with_pixmap (Pixmap pixmap) { ClutterActor *actor; actor = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP, "pixmap", pixmap, NULL); return actor; } /** * clutter_glx_texture_pixmap_new: * * Return value: A new #ClutterGLXTexturePixmap * * Since: 0.8 **/ ClutterActor * clutter_glx_texture_pixmap_new (void) { ClutterActor *actor; actor = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP, NULL); return actor; }