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39ca3e51df
Cogl keeps a pointer to the last used onscreen framebuffer from the context to implement the deprecated cogl_set_draw_buffer function which can take COGL_WINDOW_BUFFER as the target to use the last onscreen buffer. Previously this would also take a reference to that pointer. However that was causing a circular reference between the framebuffer and the context which makes it impossible to clean up resources properly when onscreen buffers are used. This patch instead changes it to just store the pointer and then clear the pointer during _cogl_onscreen_free as a kind of cheap weak reference. Reviewed-by: Robert Bragg <robert@linux.intel.com>
349 lines
11 KiB
C
349 lines
11 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl-util.h"
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#include "cogl-onscreen-private.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-onscreen-template-private.h"
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#include "cogl-context-private.h"
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#include "cogl-object-private.h"
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static void _cogl_onscreen_free (CoglOnscreen *onscreen);
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COGL_OBJECT_INTERNAL_DEFINE (Onscreen, onscreen);
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static void
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_cogl_onscreen_init_from_template (CoglOnscreen *onscreen,
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CoglOnscreenTemplate *onscreen_template)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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framebuffer->config = onscreen_template->config;
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cogl_object_ref (framebuffer->config.swap_chain);
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}
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/* XXX: While we still have backend in Clutter we need a dummy object
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* to represent the CoglOnscreen framebuffer that the backend
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* creates... */
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CoglOnscreen *
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_cogl_onscreen_new (void)
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{
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CoglOnscreen *onscreen = g_new0 (CoglOnscreen, 1);
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_COGL_GET_CONTEXT (ctx, NULL);
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_cogl_framebuffer_init (COGL_FRAMEBUFFER (onscreen),
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ctx,
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COGL_FRAMEBUFFER_TYPE_ONSCREEN,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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0x1eadbeef, /* width */
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0x1eadbeef); /* height */
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/* NB: make sure to pass positive width/height numbers here
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* because otherwise we'll hit input validation assertions!*/
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_cogl_onscreen_init_from_template (onscreen, ctx->display->onscreen_template);
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COGL_FRAMEBUFFER (onscreen)->allocated = TRUE;
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/* XXX: Note we don't initialize onscreen->winsys in this case. */
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return _cogl_onscreen_object_new (onscreen);
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}
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CoglOnscreen *
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cogl_onscreen_new (CoglContext *ctx, int width, int height)
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{
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CoglOnscreen *onscreen;
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/* FIXME: We are assuming onscreen buffers will always be
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premultiplied so we'll set the premult flag on the bitmap
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format. This will usually be correct because the result of the
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default blending operations for Cogl ends up with premultiplied
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data in the framebuffer. However it is possible for the
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framebuffer to be in whatever format depending on what
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CoglPipeline is used to render to it. Eventually we may want to
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add a way for an application to inform Cogl that the framebuffer
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is not premultiplied in case it is being used for some special
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purpose. */
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onscreen = g_new0 (CoglOnscreen, 1);
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_cogl_framebuffer_init (COGL_FRAMEBUFFER (onscreen),
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ctx,
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COGL_FRAMEBUFFER_TYPE_ONSCREEN,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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width, /* width */
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height); /* height */
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_cogl_onscreen_init_from_template (onscreen, ctx->display->onscreen_template);
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/* FIXME: This should be configurable via the template too */
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onscreen->swap_throttled = TRUE;
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return _cogl_onscreen_object_new (onscreen);
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}
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static void
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_cogl_onscreen_free (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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if (framebuffer->context->window_buffer == onscreen)
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framebuffer->context->window_buffer = NULL;
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winsys->onscreen_deinit (onscreen);
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_COGL_RETURN_IF_FAIL (onscreen->winsys == NULL);
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/* Chain up to parent */
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_cogl_framebuffer_free (framebuffer);
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g_free (onscreen);
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}
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void
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cogl_framebuffer_swap_buffers (CoglFramebuffer *framebuffer)
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{
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const CoglWinsysVtable *winsys;
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_COGL_RETURN_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN);
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/* FIXME: we shouldn't need to flush *all* journals here! */
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cogl_flush ();
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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winsys->onscreen_swap_buffers (COGL_ONSCREEN (framebuffer));
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cogl_framebuffer_discard_buffers (framebuffer,
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COGL_BUFFER_BIT_COLOR |
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COGL_BUFFER_BIT_DEPTH |
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COGL_BUFFER_BIT_STENCIL);
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}
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void
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cogl_framebuffer_swap_region (CoglFramebuffer *framebuffer,
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const int *rectangles,
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int n_rectangles)
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{
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const CoglWinsysVtable *winsys;
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_COGL_RETURN_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN);
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/* FIXME: we shouldn't need to flush *all* journals here! */
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cogl_flush ();
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called if the winsys advertises
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COGL_WINSYS_FEATURE_SWAP_REGION */
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_COGL_RETURN_IF_FAIL (winsys->onscreen_swap_region != NULL);
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winsys->onscreen_swap_region (COGL_ONSCREEN (framebuffer),
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rectangles,
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n_rectangles);
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cogl_framebuffer_discard_buffers (framebuffer,
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COGL_BUFFER_BIT_COLOR |
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COGL_BUFFER_BIT_DEPTH |
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COGL_BUFFER_BIT_STENCIL);
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}
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#ifdef COGL_HAS_X11_SUPPORT
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void
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cogl_x11_onscreen_set_foreign_window_xid (CoglOnscreen *onscreen,
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guint32 xid,
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CoglOnscreenX11MaskCallback update,
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void *user_data)
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{
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/* We don't wan't applications to get away with being lazy here and not
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* passing an update callback... */
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_COGL_RETURN_IF_FAIL (update);
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onscreen->foreign_xid = xid;
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onscreen->foreign_update_mask_callback = update;
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onscreen->foreign_update_mask_data = user_data;
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}
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guint32
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cogl_x11_onscreen_get_window_xid (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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if (onscreen->foreign_xid)
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return onscreen->foreign_xid;
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else
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{
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called for x11 onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->onscreen_x11_get_window_xid != NULL, 0);
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return winsys->onscreen_x11_get_window_xid (onscreen);
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}
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}
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guint32
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cogl_x11_onscreen_get_visual_xid (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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XVisualInfo *visinfo;
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guint32 id;
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/* This should only be called for xlib based onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->xlib_get_visual_info != NULL, 0);
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visinfo = winsys->xlib_get_visual_info ();
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id = (guint32)visinfo->visualid;
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XFree (visinfo);
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return id;
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}
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#endif /* COGL_HAS_X11_SUPPORT */
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#ifdef COGL_HAS_WIN32_SUPPORT
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void
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cogl_win32_onscreen_set_foreign_window (CoglOnscreen *onscreen,
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HWND hwnd)
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{
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onscreen->foreign_hwnd = hwnd;
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}
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HWND
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cogl_win32_onscreen_get_window (CoglOnscreen *onscreen)
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{
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if (onscreen->foreign_hwnd)
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return onscreen->foreign_hwnd;
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else
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys =
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_cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called for win32 onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->onscreen_win32_get_window != NULL, 0);
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return winsys->onscreen_win32_get_window (onscreen);
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}
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}
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#endif /* COGL_HAS_WIN32_SUPPORT */
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unsigned int
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cogl_framebuffer_add_swap_buffers_callback (CoglFramebuffer *framebuffer,
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CoglSwapBuffersNotify callback,
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void *user_data)
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{
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CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* Should this just be cogl_onscreen API instead? */
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_COGL_RETURN_VAL_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN, 0);
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/* This should only be called when
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COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT is advertised */
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_COGL_RETURN_VAL_IF_FAIL (winsys->onscreen_add_swap_buffers_callback != NULL, 0);
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return winsys->onscreen_add_swap_buffers_callback (onscreen,
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callback,
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user_data);
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}
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void
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cogl_framebuffer_remove_swap_buffers_callback (CoglFramebuffer *framebuffer,
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unsigned int id)
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{
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CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called when
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COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT is advertised */
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_COGL_RETURN_IF_FAIL (winsys->onscreen_remove_swap_buffers_callback != NULL);
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winsys->onscreen_remove_swap_buffers_callback (onscreen, id);
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}
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void
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cogl_onscreen_set_swap_throttled (CoglOnscreen *onscreen,
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gboolean throttled)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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onscreen->swap_throttled = throttled;
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if (framebuffer->allocated)
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{
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const CoglWinsysVtable *winsys =
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_cogl_framebuffer_get_winsys (framebuffer);
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winsys->onscreen_update_swap_throttled (onscreen);
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}
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}
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void
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cogl_onscreen_show (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys;
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if (!framebuffer->allocated)
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{
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if (!cogl_framebuffer_allocate (framebuffer, NULL))
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return;
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}
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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if (winsys->onscreen_set_visibility)
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winsys->onscreen_set_visibility (onscreen, TRUE);
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}
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void
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cogl_onscreen_hide (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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if (framebuffer->allocated)
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{
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const CoglWinsysVtable *winsys =
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_cogl_framebuffer_get_winsys (framebuffer);
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if (winsys->onscreen_set_visibility)
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winsys->onscreen_set_visibility (onscreen, FALSE);
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}
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}
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void
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_cogl_framebuffer_winsys_update_size (CoglFramebuffer *framebuffer,
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int width, int height)
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{
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CoglContext *ctx = framebuffer->context;
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if (framebuffer->width == width && framebuffer->height == height)
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return;
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framebuffer->width = width;
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framebuffer->height = height;
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/* We'll need to recalculate the GL viewport state derived
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* from the Cogl viewport */
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ctx->dirty_gl_viewport = 1;
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}
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