mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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4e3eb5e8ed
'make check' complains that: Checking that private header files #include "some cairo header" first (or none) cairo-gl-dispatch-private.h:#include <stddef.h> Checking that source files #include "cairoint.h" first (or none) cairo-gl-dispatch.c:#include "cairo-gl-private.h" cairo-gl-info.c:#include "cairo-gl-private.h"
145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2010 Linaro Limited
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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 either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* Contributor(s):
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* Alexandros Frantzis <alexandros.frantzis@linaro.org>
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*/
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#include "cairoint.h"
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#include "cairo-gl-private.h"
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#include "cairo-gl-dispatch-private.h"
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static void
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_cairo_gl_dispatch_init_entries (cairo_gl_dispatch_t *dispatch,
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cairo_gl_get_proc_addr_func_t get_proc_addr,
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cairo_gl_dispatch_entry_t *entries,
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cairo_bool_t use_ext)
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{
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cairo_gl_dispatch_entry_t *entry = entries;
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while (entry->name_core != NULL) {
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void *dispatch_ptr = &((char *) dispatch)[entry->offset];
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const char *name = use_ext ? entry->name_ext :
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entry->name_core;
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cairo_gl_generic_func_t func = get_proc_addr (name);
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*((cairo_gl_generic_func_t *) dispatch_ptr) = func;
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++entry;
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}
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}
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static cairo_status_t
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_cairo_gl_dispatch_init_buffers (cairo_gl_dispatch_t *dispatch,
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cairo_gl_get_proc_addr_func_t get_proc_addr,
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int gl_version)
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{
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cairo_bool_t use_ext;
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if (gl_version >= CAIRO_GL_VERSION_ENCODE (1, 5))
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use_ext = 0;
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else if (_cairo_gl_has_extension ("GL_ARB_vertex_buffer_object"))
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use_ext = 1;
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else
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return CAIRO_STATUS_DEVICE_ERROR;
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_cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
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dispatch_buffers_entries, use_ext);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_cairo_gl_dispatch_init_shaders (cairo_gl_dispatch_t *dispatch,
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cairo_gl_get_proc_addr_func_t get_proc_addr,
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int gl_version)
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{
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cairo_bool_t use_ext;
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/* Note: shader support is not necessary at the moment */
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if (gl_version >= CAIRO_GL_VERSION_ENCODE (2, 0))
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use_ext = 0;
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else if (_cairo_gl_has_extension ("GL_ARB_shader_objects"))
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use_ext = 1;
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else
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return CAIRO_STATUS_SUCCESS;
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_cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
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dispatch_shaders_entries, use_ext);
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_cairo_gl_dispatch_init_fbo (cairo_gl_dispatch_t *dispatch,
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cairo_gl_get_proc_addr_func_t get_proc_addr,
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int gl_version)
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{
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cairo_bool_t use_ext;
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if (gl_version >= CAIRO_GL_VERSION_ENCODE (3, 0) ||
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_cairo_gl_has_extension ("GL_ARB_framebuffer_object"))
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use_ext = 0;
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else if (_cairo_gl_has_extension ("GL_EXT_framebuffer_object"))
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use_ext = 1;
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else
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return CAIRO_STATUS_DEVICE_ERROR;
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_cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
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dispatch_fbo_entries, use_ext);
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return CAIRO_STATUS_SUCCESS;
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}
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cairo_status_t
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_cairo_gl_dispatch_init (cairo_gl_dispatch_t *dispatch,
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cairo_gl_get_proc_addr_func_t get_proc_addr)
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{
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cairo_status_t status;
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int gl_version;
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gl_version = _cairo_gl_get_version ();
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status = _cairo_gl_dispatch_init_buffers (dispatch, get_proc_addr,
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gl_version);
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if (status != CAIRO_STATUS_SUCCESS)
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return status;
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status = _cairo_gl_dispatch_init_shaders (dispatch, get_proc_addr,
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gl_version);
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if (status != CAIRO_STATUS_SUCCESS)
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return status;
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status = _cairo_gl_dispatch_init_fbo (dispatch, get_proc_addr,
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gl_version);
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if (status != CAIRO_STATUS_SUCCESS)
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return status;
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return CAIRO_STATUS_SUCCESS;
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}
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