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/* Cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Chris Wilson
*
* 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-vg.h>
/* XXX Not sure how to handle library specific context initialization */
//#define USE_SHIVA
//#define USE_AMANITH
#if CAIRO_HAS_GLX_FUNCTIONS
#include <X11/Xlib.h>
#include <GL/glx.h>
typedef struct _vg_closure {
Display *dpy;
int screen;
Window win;
GLXContext ctx;
cairo_surface_t *surface;
} vg_closure_glx_t;
static void
_cairo_boilerplate_vg_cleanup_glx (void *closure)
{
vg_closure_glx_t *vgc = closure;
#ifdef USE_AMANITH
vgDestroyContextAM ();
#endif
#ifdef USE_SHIVA
vgDestroyContextSH ();
#endif
glXDestroyContext (vgc->dpy, vgc->ctx);
XDestroyWindow (vgc->dpy, vgc->win);
XCloseDisplay (vgc->dpy);
free (vgc);
}
static cairo_surface_t *
_cairo_boilerplate_vg_create_surface_glx (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
int rgba_attribs[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_ALPHA_SIZE, 1,
GLX_DOUBLEBUFFER,
GLX_NONE
};
int rgb_attribs[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
GLX_NONE
};
XVisualInfo *vi;
Display *dpy;
Colormap cmap;
XSetWindowAttributes swa;
cairo_surface_t *surface;
cairo_vg_context_t *context;
vg_closure_glx_t *vgc;
vgc = malloc (sizeof (vg_closure_glx_t));
*closure = vgc;
if (width == 0)
width = 1;
if (height == 0)
height = 1;
dpy = XOpenDisplay (NULL);
vgc->dpy = dpy;
if (vgc->dpy == NULL) {
fprintf (stderr, "Failed to open display: %s\n", XDisplayName(0));
free (vgc);
return NULL;
}
if (content == CAIRO_CONTENT_COLOR)
vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgb_attribs);
else
vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
if (vi == NULL) {
fprintf (stderr, "Failed to create RGB, double-buffered visual\n");
XCloseDisplay (dpy);
free (vgc);
return NULL;
}
vgc->ctx = glXCreateContext (dpy, vi, NULL, True);
cmap = XCreateColormap (dpy,
RootWindow (dpy, vi->screen),
vi->visual,
AllocNone);
swa.colormap = cmap;
swa.border_pixel = 0;
vgc->win = XCreateWindow (dpy, RootWindow (dpy, vi->screen),
-1, -1, 1, 1, 0,
vi->depth,
InputOutput,
vi->visual,
CWBorderPixel | CWColormap, &swa);
XFreeColormap (dpy, cmap);
XFree (vi);
XMapWindow (dpy, vgc->win);
/* we need an active context to initialise VG */
glXMakeContextCurrent (dpy, vgc->win, vgc->win, vgc->ctx);
#ifdef USE_AMANITH
vgInitContextAM (width, height, VG_FALSE, VG_TRUE);
#endif
#ifdef USE_SHIVA
vgCreateContextSH (width, height);
#endif
context = cairo_vg_context_create_for_glx (dpy, vgc->ctx);
vgc->surface = cairo_vg_surface_create (context, content, width, height);
cairo_vg_context_destroy (context);
surface = vgc->surface;
if (cairo_surface_status (surface))
_cairo_boilerplate_vg_cleanup_glx (vgc);
return surface;
}
#endif
#if CAIRO_HAS_EGL_FUNCTIONS
typedef struct _vg_closure_egl {
EGLDisplay *dpy;
EGLContext *ctx;
EGLSurface *dummy;
} vg_closure_egl_t;
static void
_cairo_boilerplate_vg_cleanup_egl (void *closure)
{
vg_closure_egl_t *vgc = closure;
#ifdef USE_AMANITH
vgDestroyContextAM ();
#endif
#ifdef USE_SHIVA
vgDestroyContextSH ();
#endif
eglDestroyContext (vgc->dpy, vgc->ctx);
eglDestroySurface (vgc->dpy, vgc->dummy);
eglTerminate (vgc->dpy);
free (vgc);
}
static cairo_surface_t *
_cairo_boilerplate_vg_create_surface_egl (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
int rgba_attribs[] = {
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT,
EGL_NONE
};
int rgb_attribs[] = {
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_VG_ALPHA_FORMAT, EGL_VG_ALPHA_FORMAT_PRE_BIT,
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT,
EGL_NONE
};
int dummy_attribs[] = {
EGL_WIDTH, 8, EGL_HEIGHT, 8,
EGL_NONE
};
EGLDisplay *dpy;
int major, minor;
EGLConfig config;
int num_configs;
EGLContext *egl_context;
EGLSurface *dummy;
cairo_vg_context_t *context;
cairo_surface_t *surface;
vg_closure_egl_t *vgc;
dpy = eglGetDisplay (EGL_DEFAULT_DISPLAY);
if (! eglInitialize (dpy, &major, &minor))
return NULL;
eglBindAPI (EGL_OPENVG_API);
if (! eglChooseConfig (dpy,
content == CAIRO_CONTENT_COLOR_ALPHA ?
rgba_attribs : rgb_attribs,
&config, 1, &num_configs) ||
num_configs != 1)
{
return NULL;
}
egl_context = eglCreateContext (dpy, config, NULL, NULL);
if (egl_context == NULL)
return NULL;
/* Create a dummy surface in order to enable a context to initialise VG */
dummy = eglCreatePbufferSurface (dpy, config, dummy_attribs);
if (dummy == NULL)
return NULL;
if (! eglMakeCurrent (dpy, dummy, dummy, egl_context))
return NULL;
#ifdef USE_AMANITH
vgInitContextAM (width, height, VG_FALSE, VG_TRUE);
#endif
#ifdef USE_SHIVA
vgCreateContextSH (width, height);
#endif
vgc = xmalloc (sizeof (vg_closure_egl_t));
vgc->dpy = dpy;
vgc->ctx = egl_context;
vgc->dummy = dummy;
*closure = vgc;
context = cairo_vg_context_create_for_egl (vgc->dpy, vgc->ctx);
surface = cairo_vg_surface_create (context, content, width, height);
cairo_vg_context_destroy (context);
if (cairo_surface_status (surface))
_cairo_boilerplate_vg_cleanup_egl (vgc);
return surface;
}
#endif
static void
_cairo_boilerplate_vg_synchronize (void *closure)
{
vgFinish ();
}
static const cairo_boilerplate_target_t targets[] = {
#if CAIRO_HAS_GLX_FUNCTIONS
{
"vg-glx", "vg", NULL, NULL,
CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR_ALPHA, 1,
"cairo_vg_context_create_for_glx",
_cairo_boilerplate_vg_create_surface_glx,
cairo_surface_create_similar,
NULL, NULL,
_cairo_boilerplate_get_image_surface,
cairo_surface_write_to_png,
_cairo_boilerplate_vg_cleanup_glx,
_cairo_boilerplate_vg_synchronize,
NULL,
TRUE, FALSE, FALSE
},
{
"vg-glx", "vg", NULL, NULL,
CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR, 1,
"cairo_vg_context_create_for_glx",
_cairo_boilerplate_vg_create_surface_glx,
cairo_surface_create_similar,
NULL, NULL,
_cairo_boilerplate_get_image_surface,
cairo_surface_write_to_png,
_cairo_boilerplate_vg_cleanup_glx,
_cairo_boilerplate_vg_synchronize,
NULL,
FALSE, FALSE, FALSE
},
#endif
#if CAIRO_HAS_EGL_FUNCTIONS
{
"vg-egl", "vg", NULL, NULL,
CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR_ALPHA, 1,
"cairo_vg_context_create_for_egl",
_cairo_boilerplate_vg_create_surface_egl,
cairo_surface_create_similar,
NULL, NULL,
_cairo_boilerplate_get_image_surface,
cairo_surface_write_to_png,
_cairo_boilerplate_vg_cleanup_egl,
_cairo_boilerplate_vg_synchronize,
NULL,
TRUE, FALSE, FALSE
},
{
"vg-egl", "vg", NULL, NULL,
CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR, 1,
"cairo_vg_context_create_for_egl",
_cairo_boilerplate_vg_create_surface_egl,
cairo_surface_create_similar,
NULL, NULL,
_cairo_boilerplate_get_image_surface,
cairo_surface_write_to_png,
_cairo_boilerplate_vg_cleanup_egl,
_cairo_boilerplate_vg_synchronize,
NULL,
FALSE, FALSE, FALSE
},
#endif
};
CAIRO_BOILERPLATE (vg, targets)