boilerplate/cairo-boilerplate-cogl.c

   1 /* Cairo - a vector graphics library with display and print output
   2  *
   3  * Copyright © 2009 Chris Wilson
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it either under the terms of the GNU Lesser General Public
   7  * License version 2.1 as published by the Free Software Foundation
   8  * (the "LGPL") or, at your option, under the terms of the Mozilla
   9  * Public License Version 1.1 (the "MPL"). If you do not alter this
  10  * notice, a recipient may use your version of this file under either
  11  * the MPL or the LGPL.
  12  *
  13  * You should have received a copy of the LGPL along with this library
  14  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  16  * You should have received a copy of the MPL along with this library
  17  * in the file COPYING-MPL-1.1
  18  *
  19  * The contents of this file are subject to the Mozilla Public License
  20  * Version 1.1 (the "License"); you may not use this file except in
  21  * compliance with the License. You may obtain a copy of the License at
  22  * http://www.mozilla.org/MPL/
  23  *
  24  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  25  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  26  * the specific language governing rights and limitations.
  27  *
  28  * The Original Code is the cairo graphics library.
  29  *
  30  * The Initial Developer of the Original Code is Chris Wilson.
  31  */
  32
  33 #include "cairo-boilerplate-private.h"
  34
  35 #include <cairo-cogl.h>
  36 #include <cogl/cogl2-experimental.h>
  37
  38 typedef struct _cogl_closure {
  39     cairo_device_t *device;
  40     CoglFramebuffer *fb;
  41     cairo_surface_t *surface;
  42 } cogl_closure_t;
  43
  44 static const cairo_user_data_key_t cogl_closure_key;
  45
  46 static CoglContext *context = NULL;
  47
  48 static void
  49 _cairo_boilerplate_cogl_cleanup (void *abstract_closure)
  50 {
  51     cogl_closure_t *closure = abstract_closure;
  52
  53     cogl_object_unref (closure->fb);
  54
  55     cairo_device_finish (closure->device);
  56     cairo_device_destroy (closure->device);
  57
  58     free (closure);
  59 }
  60
  61 static cairo_surface_t *
  62 _cairo_boilerplate_cogl_create_offscreen_color_surface (const char              *name,
  63                                                         cairo_content_t          content,
  64                                                         double                   width,
  65                                                         double                   height,
  66                                                         double                   max_width,
  67                                                         double                   max_height,
  68                                                         cairo_boilerplate_mode_t mode,
  69                                                         void                   **abstract_closure)
  70 {
  71     cairo_device_t *device;
  72     CoglTexture *tex;
  73     CoglHandle offscreen;
  74     CoglFramebuffer *fb;
  75     cogl_closure_t *closure;
  76     cairo_status_t status;
  77
  78     if (!context)
  79         context = cogl_context_new (NULL, NULL);
  80
  81     device = cairo_cogl_device_create (context);
  82     tex = cogl_texture_new_with_size (width, height,
  83                                       COGL_TEXTURE_NO_SLICING,
  84                                       COGL_PIXEL_FORMAT_BGRA_8888_PRE);
  85     offscreen = cogl_offscreen_new_to_texture (tex);
  86     fb = COGL_FRAMEBUFFER (offscreen);
  87
  88     cogl_framebuffer_allocate (fb, NULL);
  89     cogl_push_framebuffer (fb);
  90     cogl_ortho (0, cogl_framebuffer_get_width (fb),
  91                 cogl_framebuffer_get_height (fb), 0,
  92                 -1, 100);
  93     cogl_pop_framebuffer ();
  94
  95     closure = malloc (sizeof (cogl_closure_t));
  96     *abstract_closure = closure;
  97     closure->device = device;
  98     closure->fb = fb;
  99     closure->surface = cairo_cogl_surface_create (device, fb);
 100
 101     status = cairo_surface_set_user_data (closure->surface,
 102                                           &cogl_closure_key, closure, NULL);
 103     if (status == CAIRO_STATUS_SUCCESS)
 104         return closure->surface;
 105
 106     _cairo_boilerplate_cogl_cleanup (closure);
 107     return cairo_boilerplate_surface_create_in_error (status);
 108 }
 109
 110 static cairo_surface_t *
 111 _cairo_boilerplate_cogl_create_onscreen_color_surface (const char              *name,
 112                                                        cairo_content_t          content,
 113                                                        double                   width,
 114                                                        double                   height,
 115                                                        double                   max_width,
 116                                                        double                   max_height,
 117                                                        cairo_boilerplate_mode_t mode,
 118                                                        void                   **abstract_closure)
 119 {
 120     cairo_device_t *device;
 121     CoglOnscreen *onscreen;
 122     CoglFramebuffer *fb;
 123     cogl_closure_t *closure;
 124     cairo_status_t status;
 125
 126     if (!context)
 127         context = cogl_context_new (NULL, NULL);
 128
 129     device = cairo_cogl_device_create (context);
 130     onscreen = cogl_onscreen_new (context, width, height);
 131     fb = COGL_FRAMEBUFFER (onscreen);
 132
 133     cogl_onscreen_show (onscreen);
 134
 135     cogl_push_framebuffer (fb);
 136     cogl_ortho (0, cogl_framebuffer_get_width (fb),
 137                 cogl_framebuffer_get_height (fb), 0,
 138                 -1, 100);
 139     cogl_pop_framebuffer ();
 140
 141     closure = malloc (sizeof (cogl_closure_t));
 142     *abstract_closure = closure;
 143     closure->device = device;
 144     closure->fb = fb;
 145     closure->surface = cairo_cogl_surface_create (device, fb);
 146
 147     status = cairo_surface_set_user_data (closure->surface,
 148                                           &cogl_closure_key, closure, NULL);
 149     if (status == CAIRO_STATUS_SUCCESS)
 150         return closure->surface;
 151
 152     _cairo_boilerplate_cogl_cleanup (closure);
 153     return cairo_boilerplate_surface_create_in_error (status);
 154 }
 155
 156 static cairo_status_t
 157 _cairo_boilerplate_cogl_finish_onscreen (cairo_surface_t *surface)
 158 {
 159     cogl_closure_t *closure = cairo_surface_get_user_data (surface, &cogl_closure_key);
 160
 161     cairo_cogl_surface_end_frame (surface);
 162
 163     cogl_framebuffer_swap_buffers (closure->fb);
 164
 165     return CAIRO_STATUS_SUCCESS;
 166 }
 167
 168 static void
 169 _cairo_boilerplate_cogl_synchronize (void *abstract_closure)
 170 {
 171     cogl_closure_t *closure = abstract_closure;
 172     cogl_framebuffer_finish (closure->fb);
 173 }
 174
 175 static const cairo_boilerplate_target_t targets[] = {
 176     {
 177         "cogl-offscreen-color", "cogl", NULL, NULL,
 178         CAIRO_SURFACE_TYPE_COGL, CAIRO_CONTENT_COLOR_ALPHA, 1,
 179         "cairo_cogl_device_create",
 180         _cairo_boilerplate_cogl_create_offscreen_color_surface,
 181         cairo_surface_create_similar,
 182         NULL, NULL,
 183         _cairo_boilerplate_get_image_surface,
 184         cairo_surface_write_to_png,
 185         _cairo_boilerplate_cogl_cleanup,
 186         _cairo_boilerplate_cogl_synchronize,
 187         NULL,
 188         TRUE, FALSE, FALSE
 189     },
 190     {
 191         "cogl-onscreen-color", "cogl", NULL, NULL,
 192         CAIRO_SURFACE_TYPE_COGL, CAIRO_CONTENT_COLOR_ALPHA, 1,
 193         "cairo_cogl_device_create",
 194         _cairo_boilerplate_cogl_create_onscreen_color_surface,
 195         cairo_surface_create_similar,
 196         NULL,
 197         _cairo_boilerplate_cogl_finish_onscreen,
 198         _cairo_boilerplate_get_image_surface,
 199         cairo_surface_write_to_png,
 200         _cairo_boilerplate_cogl_cleanup,
 201         _cairo_boilerplate_cogl_synchronize,
 202         NULL,
 203         TRUE, FALSE, FALSE
 204     }
 205 };
 206 CAIRO_BOILERPLATE (cogl, targets)