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-rw-r--r--Build/source/libs/cairo/cairo-1.12.8/src/cairo-egl-context.c237
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diff --git a/Build/source/libs/cairo/cairo-1.12.8/src/cairo-egl-context.c b/Build/source/libs/cairo/cairo-1.12.8/src/cairo-egl-context.c
new file mode 100644
index 00000000000..0e9fd71911f
--- /dev/null
+++ b/Build/source/libs/cairo/cairo-1.12.8/src/cairo-egl-context.c
@@ -0,0 +1,237 @@
+/* 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., 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 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 "cairo-error-private.h"
+
+typedef struct _cairo_egl_context {
+ cairo_gl_context_t base;
+
+ EGLDisplay display;
+ EGLContext context;
+
+ EGLSurface dummy_surface;
+} cairo_egl_context_t;
+
+typedef struct _cairo_egl_surface {
+ cairo_gl_surface_t base;
+
+ EGLSurface egl;
+} cairo_egl_surface_t;
+
+
+static void
+_egl_acquire (void *abstract_ctx)
+{
+ cairo_egl_context_t *ctx = abstract_ctx;
+ EGLSurface current_surface;
+
+ if (ctx->base.current_target == NULL ||
+ _cairo_gl_surface_is_texture (ctx->base.current_target)) {
+ current_surface = ctx->dummy_surface;
+ } else {
+ cairo_egl_surface_t *surface = (cairo_egl_surface_t *) ctx->base.current_target;
+ current_surface = surface->egl ;
+ }
+
+ eglMakeCurrent (ctx->display,
+ current_surface, current_surface, ctx->context);
+}
+
+static void
+_egl_release (void *abstract_ctx)
+{
+ cairo_egl_context_t *ctx = abstract_ctx;
+ if (!ctx->base.thread_aware)
+ return;
+
+ eglMakeCurrent (ctx->display,
+ EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+}
+
+static void
+_egl_make_current (void *abstract_ctx,
+ cairo_gl_surface_t *abstract_surface)
+{
+ cairo_egl_context_t *ctx = abstract_ctx;
+ cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface;
+
+ eglMakeCurrent(ctx->display, surface->egl, surface->egl, ctx->context);
+}
+
+static void
+_egl_swap_buffers (void *abstract_ctx,
+ cairo_gl_surface_t *abstract_surface)
+{
+ cairo_egl_context_t *ctx = abstract_ctx;
+ cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface;
+
+ eglSwapBuffers (ctx->display, surface->egl);
+}
+
+static void
+_egl_destroy (void *abstract_ctx)
+{
+ cairo_egl_context_t *ctx = abstract_ctx;
+
+ eglMakeCurrent (ctx->display,
+ EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+ if (ctx->dummy_surface != EGL_NO_SURFACE)
+ eglDestroySurface (ctx->display, ctx->dummy_surface);
+}
+
+static cairo_bool_t
+_egl_make_current_surfaceless(cairo_egl_context_t *ctx)
+{
+ const char *extensions;
+
+ extensions = eglQueryString(ctx->display, EGL_EXTENSIONS);
+ if (strstr(extensions, "EGL_KHR_surfaceless_context") == NULL &&
+ strstr(extensions, "EGL_KHR_surfaceless_opengl") == NULL)
+ return FALSE;
+
+ if (!eglMakeCurrent(ctx->display,
+ EGL_NO_SURFACE, EGL_NO_SURFACE, ctx->context))
+ return FALSE;
+
+ return TRUE;
+}
+
+cairo_device_t *
+cairo_egl_device_create (EGLDisplay dpy, EGLContext egl)
+{
+ cairo_egl_context_t *ctx;
+ cairo_status_t status;
+ int attribs[] = {
+ EGL_WIDTH, 1,
+ EGL_HEIGHT, 1,
+ EGL_NONE,
+ };
+ EGLConfig config;
+ EGLint numConfigs;
+
+ ctx = calloc (1, sizeof (cairo_egl_context_t));
+ if (unlikely (ctx == NULL))
+ return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+ ctx->display = dpy;
+ ctx->context = egl;
+
+ ctx->base.acquire = _egl_acquire;
+ ctx->base.release = _egl_release;
+ ctx->base.make_current = _egl_make_current;
+ ctx->base.swap_buffers = _egl_swap_buffers;
+ ctx->base.destroy = _egl_destroy;
+
+ if (!_egl_make_current_surfaceless (ctx)) {
+ /* Fall back to dummy surface, meh. */
+ EGLint config_attribs[] = {
+ EGL_CONFIG_ID, 0,
+ EGL_NONE
+ };
+
+ /*
+ * In order to be able to make an egl context current when using a
+ * pbuffer surface, that surface must have been created with a config
+ * that is compatible with the context config. For Mesa, this means
+ * that the configs must be the same.
+ */
+ eglQueryContext (dpy, egl, EGL_CONFIG_ID, &config_attribs[1]);
+ eglChooseConfig (dpy, config_attribs, &config, 1, &numConfigs);
+
+ ctx->dummy_surface = eglCreatePbufferSurface (dpy, config, attribs);
+ if (ctx->dummy_surface == NULL) {
+ free (ctx);
+ return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+ }
+
+ if (!eglMakeCurrent (dpy, ctx->dummy_surface, ctx->dummy_surface, egl)) {
+ free (ctx);
+ return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+ }
+ }
+
+ status = _cairo_gl_dispatch_init (&ctx->base.dispatch, eglGetProcAddress);
+ if (unlikely (status)) {
+ free (ctx);
+ return _cairo_gl_context_create_in_error (status);
+ }
+
+ status = _cairo_gl_context_init (&ctx->base);
+ if (unlikely (status)) {
+ if (ctx->dummy_surface != EGL_NO_SURFACE)
+ eglDestroySurface (dpy, ctx->dummy_surface);
+ free (ctx);
+ return _cairo_gl_context_create_in_error (status);
+ }
+
+ eglMakeCurrent (dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+
+ return &ctx->base.base;
+}
+
+cairo_surface_t *
+cairo_gl_surface_create_for_egl (cairo_device_t *device,
+ EGLSurface egl,
+ int width,
+ int height)
+{
+ cairo_egl_surface_t *surface;
+
+ if (unlikely (device->status))
+ return _cairo_surface_create_in_error (device->status);
+
+ if (device->backend->type != CAIRO_DEVICE_TYPE_GL)
+ return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+ if (width <= 0 || height <= 0)
+ return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+ surface = calloc (1, sizeof (cairo_egl_surface_t));
+ if (unlikely (surface == NULL))
+ return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+ _cairo_gl_surface_init (device, &surface->base,
+ CAIRO_CONTENT_COLOR_ALPHA, width, height);
+ surface->egl = egl;
+
+ return &surface->base.base;
+}