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Diffstat (limited to 'boilerplate/cairo-boilerplate-cgl.c')
-rw-r--r-- | boilerplate/cairo-boilerplate-cgl.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/boilerplate/cairo-boilerplate-cgl.c b/boilerplate/cairo-boilerplate-cgl.c new file mode 100644 index 000000000..b4d1abe7d --- /dev/null +++ b/boilerplate/cairo-boilerplate-cgl.c @@ -0,0 +1,150 @@ +/* Cairo - a vector graphics library with display and print output + * + * Copyright © 2009 Chris Wilson + * Copyright © 2015 Samsung Research America Inc - Silicon Valley + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is Chris Wilson. + */ + +#include "cairo-boilerplate-private.h" + +#include <cairo-gl.h> + +#include <OpenGL/OpenGL.h> +#include <OpenGL/gl.h> + +static const cairo_user_data_key_t gl_closure_key; + +typedef struct _cgl_target_closure { + CGLContextObj context; + cairo_device_t *device; + cairo_surface_t *surface; +} cgl_target_closure_t; + +static void +_cairo_boilerplate_cgl_cleanup (void *closure) +{ + cgl_target_closure_t *gltc = closure; + + cairo_device_finish (gltc->device); + cairo_device_destroy (gltc->device); + + CGLSetCurrentContext (NULL); + CGLDestroyContext (gltc->context); + + free (gltc); +} + +static cairo_surface_t * +_cairo_boilerplate_cgl_create_surface (const char *name, + cairo_content_t content, + double width, + double height, + double max_width, + double max_height, + cairo_boilerplate_mode_t mode, + void **closure) +{ + cgl_target_closure_t *gltc; + cairo_surface_t *surface; + CGLPixelFormatObj pixelformat; + CGLContextObj context; + GLint npix; + CGLError error; + + CGLPixelFormatAttribute attribs[] = { + kCGLPFAAlphaSize, 8, + kCGLPFAColorSize, 24, + kCGLPFAOpenGLProfile, kCGLOGLPVersion_3_2_Core, + kCGLPFAAccelerated, + 0 + }; + + error = CGLChoosePixelFormat (attribs, &pixelformat, &npix); + if (error != kCGLNoError || ! pixelformat) + return NULL; + + error = CGLCreateContext (pixelformat, NULL, &context); + if (error != kCGLNoError) { + CGLReleasePixelFormat (pixelformat); + return NULL; + } + + CGLReleasePixelFormat (pixelformat); + + gltc = xcalloc (1, sizeof (cgl_target_closure_t)); + *closure = gltc; + gltc->context = context; + + gltc->device = cairo_cgl_device_create (gltc->context); + + if (width < 1) + width = 1; + if (height < 1) + height = 1; + + gltc->surface = surface = cairo_gl_surface_create (gltc->device, + content, + ceil (width), + ceil (height)); + if (cairo_surface_status (surface)) + _cairo_boilerplate_cgl_cleanup (gltc); + + return surface; +} + +static void +_cairo_boilerplate_cgl_synchronize (void *closure) +{ + cgl_target_closure_t *gltc = closure; + + if (cairo_device_acquire (gltc->device)) + return; + + glFinish (); + + cairo_device_release (gltc->device); +} + +static const cairo_boilerplate_target_t targets[] = { + { + "cgl", "gl", NULL, NULL, + CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR_ALPHA, 1, + "cairo_cgl_device_create", + _cairo_boilerplate_cgl_create_surface, + cairo_surface_create_similar, + NULL, NULL, + _cairo_boilerplate_get_image_surface, + cairo_surface_write_to_png, + _cairo_boilerplate_cgl_cleanup, + _cairo_boilerplate_cgl_synchronize, + NULL, + TRUE, FALSE, FALSE + } +}; +CAIRO_BOILERPLATE (egl, targets) |