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-rw-r--r--boilerplate/cairo-boilerplate-glx.c457
1 files changed, 457 insertions, 0 deletions
diff --git a/boilerplate/cairo-boilerplate-glx.c b/boilerplate/cairo-boilerplate-glx.c
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+++ b/boilerplate/cairo-boilerplate-glx.c
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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-gl.h>
+
+#include <X11/X.h>
+#include <X11/Xutil.h> /* for XDestroyImage */
+
+static const cairo_user_data_key_t gl_closure_key;
+
+typedef struct _gl_target_closure {
+ Display *dpy;
+ int screen;
+ Window drawable;
+
+ GLXContext ctx;
+ cairo_device_t *device;
+ cairo_surface_t *surface;
+} gl_target_closure_t;
+
+static void
+_cairo_boilerplate_gl_cleanup (void *closure)
+{
+ gl_target_closure_t *gltc = closure;
+
+ cairo_device_finish (gltc->device);
+ cairo_device_destroy (gltc->device);
+
+ glXDestroyContext (gltc->dpy, gltc->ctx);
+
+ if (gltc->drawable)
+ XDestroyWindow (gltc->dpy, gltc->drawable);
+ XCloseDisplay (gltc->dpy);
+
+ free (gltc);
+}
+
+static cairo_surface_t *
+_cairo_boilerplate_gl_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)
+{
+ 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 *visinfo;
+ GLXContext ctx;
+ gl_target_closure_t *gltc;
+ cairo_surface_t *surface;
+ Display *dpy;
+
+ gltc = calloc (1, sizeof (gl_target_closure_t));
+ *closure = gltc;
+
+ width = ceil (width);
+ height = ceil (height);
+
+ if (width == 0)
+ width = 1;
+ if (height == 0)
+ height = 1;
+
+ dpy = XOpenDisplay (NULL);
+ gltc->dpy = dpy;
+ if (!gltc->dpy) {
+ fprintf (stderr, "Failed to open display: %s\n", XDisplayName(0));
+ free (gltc);
+ return NULL;
+ }
+
+ if (mode == CAIRO_BOILERPLATE_MODE_TEST)
+ XSynchronize (gltc->dpy, 1);
+
+ if (content == CAIRO_CONTENT_COLOR)
+ visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgb_attribs);
+ else
+ visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
+
+ if (visinfo == NULL) {
+ fprintf (stderr, "Failed to create RGB, double-buffered visual\n");
+ XCloseDisplay (dpy);
+ free (gltc);
+ return NULL;
+ }
+
+ ctx = glXCreateContext (dpy, visinfo, NULL, True);
+ XFree (visinfo);
+
+ gltc->ctx = ctx;
+ gltc->device = cairo_glx_device_create (dpy, ctx);
+
+ if (mode == CAIRO_BOILERPLATE_MODE_PERF)
+ cairo_gl_device_set_thread_aware(gltc->device, FALSE);
+
+ gltc->surface = surface = cairo_gl_surface_create (gltc->device,
+ content, width, height);
+ if (cairo_surface_status (surface))
+ _cairo_boilerplate_gl_cleanup (gltc);
+
+ return surface;
+}
+
+static cairo_surface_t *
+_cairo_boilerplate_gl_create_window_common (int rgba_attribs[],
+ cairo_content_t content,
+ double width,
+ double height,
+ double max_width,
+ double max_height,
+ cairo_boilerplate_mode_t mode,
+ gl_target_closure_t *gltc)
+{
+ XVisualInfo *vi;
+ GLXContext ctx;
+ cairo_surface_t *surface;
+ Display *dpy;
+ XSetWindowAttributes attr;
+
+ width = ceil (width);
+ height = ceil (height);
+
+ if (width == 0)
+ width = 1;
+ if (height == 0)
+ height = 1;
+
+ dpy = XOpenDisplay (NULL);
+ gltc->dpy = dpy;
+ if (!gltc->dpy) {
+ fprintf (stderr, "Failed to open display: %s\n", XDisplayName(0));
+ free (gltc);
+ return NULL;
+ }
+
+ if (mode == CAIRO_BOILERPLATE_MODE_TEST)
+ XSynchronize (gltc->dpy, 1);
+
+ vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
+ if (vi == NULL) {
+ fprintf (stderr, "Failed to create RGBA, double-buffered visual\n");
+ XCloseDisplay (dpy);
+ free (gltc);
+ return NULL;
+ }
+
+ attr.colormap = XCreateColormap (dpy,
+ RootWindow (dpy, vi->screen),
+ vi->visual,
+ AllocNone);
+ attr.border_pixel = 0;
+ attr.override_redirect = True;
+ gltc->drawable = XCreateWindow (dpy, DefaultRootWindow (dpy), 0, 0,
+ width, height, 0, vi->depth,
+ InputOutput, vi->visual,
+ CWOverrideRedirect | CWBorderPixel | CWColormap,
+ &attr);
+ XMapWindow (dpy, gltc->drawable);
+
+ ctx = glXCreateContext (dpy, vi, NULL, True);
+ XFree (vi);
+
+ gltc->ctx = ctx;
+ gltc->device = cairo_glx_device_create (dpy, ctx);
+
+ gltc->surface = surface = cairo_gl_surface_create_for_window (gltc->device,
+ gltc->drawable,
+ width, height);
+ if (cairo_surface_status (surface)) {
+ _cairo_boilerplate_gl_cleanup (gltc);
+ return NULL;
+ }
+ return surface;
+}
+
+static cairo_surface_t *
+_cairo_boilerplate_gl_create_window (const char *name,
+ cairo_content_t content,
+ double width,
+ double height,
+ double max_width,
+ double max_height,
+ cairo_boilerplate_mode_t mode,
+ void **closure)
+{
+ gl_target_closure_t *gltc;
+
+ 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 };
+
+ gltc = calloc (1, sizeof (gl_target_closure_t));
+ *closure = gltc;
+
+ return _cairo_boilerplate_gl_create_window_common (rgba_attribs, content,
+ width, height,
+ max_width, max_height,
+ mode, gltc);
+}
+
+static cairo_surface_t *
+_cairo_boilerplate_gl_create_window_msaa (const char *name,
+ cairo_content_t content,
+ double width,
+ double height,
+ double max_width,
+ double max_height,
+ cairo_boilerplate_mode_t mode,
+ void **closure)
+{
+ gl_target_closure_t *gltc;
+
+ int rgba_attribs[] = { GLX_RGBA,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ GLX_ALPHA_SIZE, 1,
+ GLX_STENCIL_SIZE, 1,
+ GLX_SAMPLES, 4,
+ GLX_SAMPLE_BUFFERS, 1,
+ GLX_DOUBLEBUFFER,
+ GLX_NONE };
+
+ gltc = calloc (1, sizeof (gl_target_closure_t));
+ *closure = gltc;
+ return _cairo_boilerplate_gl_create_window_common (rgba_attribs, content,
+ width, height,
+ max_width, max_height,
+ mode, gltc);
+
+}
+
+static cairo_surface_t *
+_cairo_boilerplate_gl_create_window_db (const char *name,
+ cairo_content_t content,
+ double width,
+ double height,
+ double max_width,
+ double max_height,
+ cairo_boilerplate_mode_t mode,
+ void **closure)
+{
+ cairo_status_t status;
+ cairo_surface_t *surface;
+ gl_target_closure_t *gltc;
+
+ 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 };
+
+ gltc = calloc (1, sizeof (gl_target_closure_t));
+ *closure = gltc;
+
+ surface = _cairo_boilerplate_gl_create_window_common (rgba_attribs, content,
+ width, height,
+ max_width, max_height,
+ mode, gltc);
+
+ if (! surface)
+ return NULL;
+
+ surface = cairo_surface_create_similar (gltc->surface, content, width, height);
+ status = cairo_surface_set_user_data (surface, &gl_closure_key, gltc, NULL);
+ if (status == CAIRO_STATUS_SUCCESS)
+ return surface;
+
+ cairo_surface_destroy (surface);
+ _cairo_boilerplate_gl_cleanup (gltc);
+ return cairo_boilerplate_surface_create_in_error (status);
+}
+
+static cairo_status_t
+_cairo_boilerplate_gl_finish_window (cairo_surface_t *surface)
+{
+ gl_target_closure_t *gltc = cairo_surface_get_user_data (surface,
+ &gl_closure_key);
+
+ if (gltc != NULL && gltc->surface != NULL) {
+ cairo_t *cr;
+
+ cr = cairo_create (gltc->surface);
+ cairo_surface_set_device_offset (surface, 0, 0);
+ cairo_set_source_surface (cr, surface, 0, 0);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+
+ surface = gltc->surface;
+ }
+
+ cairo_gl_surface_swapbuffers (surface);
+ return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_boilerplate_gl_synchronize (void *closure)
+{
+ gl_target_closure_t *gltc = closure;
+
+ if (cairo_device_acquire (gltc->device))
+ return;
+
+ glFinish ();
+
+ cairo_device_release (gltc->device);
+}
+
+static char *
+_cairo_boilerplate_gl_describe (void *closure)
+{
+ gl_target_closure_t *gltc = closure;
+ char *s;
+ const GLubyte *vendor, *renderer, *version;
+
+ if (cairo_device_acquire (gltc->device))
+ return NULL;
+
+ vendor = glGetString (GL_VENDOR);
+ renderer = glGetString (GL_RENDERER);
+ version = glGetString (GL_VERSION);
+
+ xasprintf (&s, "%s %s %s", vendor, renderer, version);
+
+ cairo_device_release (gltc->device);
+
+ return s;
+}
+
+static const cairo_boilerplate_target_t targets[] = {
+ {
+ "gl", "gl", NULL, NULL,
+ CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR_ALPHA, 1,
+ "cairo_gl_surface_create",
+ _cairo_boilerplate_gl_create_surface,
+ cairo_surface_create_similar,
+ NULL, NULL,
+ _cairo_boilerplate_get_image_surface,
+ cairo_surface_write_to_png,
+ _cairo_boilerplate_gl_cleanup,
+ _cairo_boilerplate_gl_synchronize,
+ _cairo_boilerplate_gl_describe,
+ TRUE, FALSE, FALSE
+ },
+ {
+ "gl", "gl", NULL, NULL,
+ CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR, 1,
+ "cairo_gl_surface_create",
+ _cairo_boilerplate_gl_create_surface,
+ cairo_surface_create_similar,
+ NULL, NULL,
+ _cairo_boilerplate_get_image_surface,
+ cairo_surface_write_to_png,
+ _cairo_boilerplate_gl_cleanup,
+ _cairo_boilerplate_gl_synchronize,
+ _cairo_boilerplate_gl_describe,
+ FALSE, FALSE, FALSE
+ },
+ {
+ "gl-window", "gl", NULL, NULL,
+ CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR_ALPHA, 1,
+ "cairo_gl_surface_create_for_window",
+ _cairo_boilerplate_gl_create_window,
+ cairo_surface_create_similar,
+ NULL,
+ _cairo_boilerplate_gl_finish_window,
+ _cairo_boilerplate_get_image_surface,
+ cairo_surface_write_to_png,
+ _cairo_boilerplate_gl_cleanup,
+ _cairo_boilerplate_gl_synchronize,
+ _cairo_boilerplate_gl_describe,
+ FALSE, FALSE, FALSE
+ },
+ {
+ "gl-window-msaa", "gl", NULL, NULL,
+ CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR_ALPHA, 1,
+ "cairo_gl_surface_create_for_window",
+ _cairo_boilerplate_gl_create_window_msaa,
+ cairo_surface_create_similar,
+ NULL,
+ _cairo_boilerplate_gl_finish_window,
+ _cairo_boilerplate_get_image_surface,
+ cairo_surface_write_to_png,
+ _cairo_boilerplate_gl_cleanup,
+ _cairo_boilerplate_gl_synchronize,
+ _cairo_boilerplate_gl_describe,
+ FALSE, FALSE, FALSE
+ },
+ {
+ "gl-window&", "gl", NULL, NULL,
+ CAIRO_SURFACE_TYPE_GL, CAIRO_CONTENT_COLOR_ALPHA, 1,
+ "cairo_gl_surface_create_for_window",
+ _cairo_boilerplate_gl_create_window_db,
+ cairo_surface_create_similar,
+ NULL,
+ _cairo_boilerplate_gl_finish_window,
+ _cairo_boilerplate_get_image_surface,
+ cairo_surface_write_to_png,
+ _cairo_boilerplate_gl_cleanup,
+ _cairo_boilerplate_gl_synchronize,
+ _cairo_boilerplate_gl_describe,
+ FALSE, FALSE, FALSE
+ },
+};
+CAIRO_BOILERPLATE (gl, targets)