test: Add gl-surface-source

Exercise using GL sources.

test/Makefile.am

@@ -16,6 +16,10 @@ test_sources += $(ft_font_test_sources)
 endif
 endif
 
+if CAIRO_HAS_GL_SURFACE
+test_sources += $(gl_surface_test_sources)
+endif
+
 # Need to add quartz-surface-source
 if CAIRO_HAS_QUARTZ_SURFACE
 test_sources += $(quartz_surface_test_sources)
@@ -591,6 +595,9 @@ REFERENCE_IMAGES = \
 	ft-text-vertical-layout-type3.svg.ref.png \
 	ft-text-vertical-layout-type3.xlib.ref.png \
 	get-group-target.ref.png \
+	gl-surface-source.rgb24.ref.png \
+	gl-surface-source.argb32.ref.png \
+	gl-surface-source.image16.ref.png \
 	glyph-cache-pressure.image16.ref.png \
 	glyph-cache-pressure.ps2.ref.png \
 	glyph-cache-pressure.ps3.ref.png \

test/Makefile.sources

@@ -286,6 +286,9 @@ ft_font_test_sources = \
 	ft-text-vertical-layout-type3.c \
 	ft-text-antialias-none.c
 
+gl_surface_test_sources = \
+	gl-surface-source.c
+
 quartz_surface_test_sources = quartz-surface-source.c
 
 pdf_surface_test_sources = \

test/gl-surface-source.c

@@ -0,0 +1,115 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+#include <cairo-gl.h>
+
+#include "surface-source.c"
+
+struct closure {
+    Display *dpy;
+    GLXContext ctx;
+
+    cairo_device_t *device;
+};
+
+static void
+cleanup (void *data)
+{
+    struct closure *arg = data;
+
+    cairo_device_finish (arg->device);
+    cairo_device_destroy (arg->device);
+
+    glXDestroyContext (arg->dpy, arg->ctx);
+    XCloseDisplay (arg->dpy);
+
+    free (arg);
+}
+
+static cairo_surface_t *
+create_source_surface (int size)
+{
+    int rgba_attribs[] = {
+	GLX_RGBA,
+	GLX_RED_SIZE, 1,
+	GLX_GREEN_SIZE, 1,
+	GLX_BLUE_SIZE, 1,
+	GLX_ALPHA_SIZE, 1,
+	GLX_DOUBLEBUFFER,
+	None
+    };
+    XVisualInfo *visinfo;
+    GLXContext ctx;
+    struct closure *arg;
+    cairo_surface_t *surface;
+    Display *dpy;
+
+    dpy = XOpenDisplay (NULL);
+    if (dpy == NULL)
+	return NULL;
+
+    visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
+    if (visinfo == NULL) {
+	XCloseDisplay (dpy);
+	return NULL;
+    }
+
+    ctx = glXCreateContext (dpy, visinfo, NULL, True);
+    XFree (visinfo);
+
+    if (ctx == NULL) {
+	XCloseDisplay (dpy);
+	return NULL;
+    }
+
+    arg = xmalloc (sizeof (struct closure));
+    arg->dpy = dpy;
+    arg->ctx = ctx;
+    arg->device = cairo_glx_device_create (dpy, ctx);
+    surface = cairo_gl_surface_create (arg->device,
+				       CAIRO_CONTENT_COLOR_ALPHA,
+				       size, size);
+
+    if (cairo_surface_set_user_data (surface,
+				     (cairo_user_data_key_t *) create_source_surface,
+				     arg,
+				     cleanup))
+    {
+	cairo_surface_destroy (surface);
+	cleanup (arg);
+	return NULL;
+    }
+
+    return surface;
+}
+
+CAIRO_TEST (gl_surface_source,
+	    "Test using a GL surface as the source",
+	    "source", /* keywords */
+	    NULL, /* requirements */
+	    SIZE, SIZE,
+	    preamble, draw)