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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Eric Anholt
* Copyright © 2009 Chris Wilson
* Copyright © 2005 Red Hat, Inc
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 Red Hat, Inc.
*
* Contributor(s):
* Carl Worth <cworth@cworth.org>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairoint.h"
#include "cairo-gl-private.h"
#include <i915_drm.h> /* XXX dummy surface for glewInit() */
#include <sys/ioctl.h>
typedef struct _cairo_eagle_context {
cairo_gl_context_t base;
EGLDisplay display;
EGLContext context;
} cairo_eagle_context_t;
typedef struct _cairo_eagle_surface {
cairo_gl_surface_t base;
EGLSurface eagle;
} cairo_eagle_surface_t;
static void
_eagle_make_current (void *abstract_ctx,
cairo_gl_surface_t *abstract_surface)
{
cairo_eagle_context_t *ctx = abstract_ctx;
cairo_eagle_surface_t *surface = (cairo_eagle_surface_t *) abstract_surface;
eagleMakeCurrent (ctx->display, surface->eagle, surface->eagle, ctx->context);
}
static void
_eagle_swap_buffers (void *abstract_ctx,
cairo_gl_surface_t *abstract_surface)
{
cairo_eagle_context_t *ctx = abstract_ctx;
cairo_eagle_surface_t *surface = (cairo_eagle_surface_t *) abstract_surface;
eagleSwapBuffers (ctx->display, surface->eagle);
}
static void
_eagle_destroy (void *abstract_ctx)
{
}
static cairo_bool_t
_eagle_init (EGLDisplay display, EGLContext context)
{
const EGLint config_attribs[] = {
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_NONE
};
const EGLint surface_attribs[] = {
EGL_RENDER_BUFFER, EGL_BACK_BUFFER,
EGL_NONE
};
EGLConfig config;
EGLSurface dummy;
struct drm_i915_gem_create create;
struct drm_gem_flink flink;
int fd;
GLenum err;
if (! eagleChooseConfig (display, config_attribs, &config, 1, NULL)) {
fprintf (stderr, "Unable to choose config\n");
return FALSE;
}
/* XXX */
fd = eagleGetDisplayFD (display);
create.size = 4096;
if (ioctl (fd, DRM_IOCTL_I915_GEM_CREATE, &create) != 0) {
fprintf (stderr, "gem create failed: %m\n");
return FALSE;
}
flink.handle = create.handle;
if (ioctl (fd, DRM_IOCTL_GEM_FLINK, &flink) != 0) {
fprintf (stderr, "gem flink failed: %m\n");
return FALSE;
}
dummy = eagleCreateSurfaceForName (display, config, flink.name,
1, 1, 4, surface_attribs);
if (dummy == NULL) {
fprintf (stderr, "Failed to create dummy surface\n");
return FALSE;
}
eagleMakeCurrent (display, dummy, dummy, context);
}
cairo_gl_context_t *
cairo_eagle_context_create (EGLDisplay display, EGLContext context)
{
cairo_eagle_context_t *ctx;
cairo_status_t status;
if (! _eagle_init (display, context)) {
return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
}
ctx = calloc (1, sizeof (cairo_eagle_context_t));
if (ctx == NULL)
return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
ctx->display = display;
ctx->context = context;
ctx->base.make_current = _eagle_make_current;
ctx->base.swap_buffers = _eagle_swap_buffers;
ctx->base.destroy = _eagle_destroy;
status = _cairo_gl_context_init (&ctx->base);
if (status) {
free (ctx);
return _cairo_gl_context_create_in_error (status);
}
return &ctx->base;
}
cairo_surface_t *
cairo_gl_surface_create_for_eagle (cairo_gl_context_t *ctx,
EGLSurface eagle,
int width,
int height)
{
cairo_eagle_surface_t *surface;
if (ctx->status)
return _cairo_surface_create_in_error (ctx->status);
surface = calloc (1, sizeof (cairo_eagle_surface_t));
if (unlikely (surface == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_gl_surface_init (ctx, &surface->base,
CAIRO_CONTENT_COLOR_ALPHA, width, height);
surface->eagle = eagle;
return &surface->base.base;
}
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