Move sample from agl-service-homescreen-2017

[src/libhomescreen.git] / sample / simple-egl / include / platform.h

diff --git a/sample/simple-egl/include/platform.h b/sample/simple-egl/include/platform.h
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+/*
+ * Copyright © 2015 Collabora, Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef WESTON_PLATFORM_H
+#define WESTON_PLATFORM_H
+
+#include <string.h>
+
+#include <wayland-egl.h>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#ifndef EGL_PLATFORM_WAYLAND_KHR
+#define EGL_PLATFORM_WAYLAND_KHR 0x31D8
+#endif
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#ifndef EGL_EXT_platform_base
+typedef EGLDisplay (*PFNEGLGETPLATFORMDISPLAYEXTPROC) (EGLenum platform,
+                                                      void *native_display,
+                                                      const EGLint *attrib_list);
+typedef EGLSurface (*PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC) (EGLDisplay dpy,
+                                                               EGLConfig config,
+                                                               void *native_window,
+                                                               const EGLint *attrib_list);
+#endif
+
+static inline void *
+weston_platform_get_egl_proc_address(const char *address)
+{
+       const char *extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
+
+       if (extensions
+           && (strstr(extensions, "EGL_EXT_platform_wayland")
+               || strstr(extensions, "EGL_KHR_platform_wayland"))) {
+               return (void *) eglGetProcAddress(address);
+       }
+
+       return NULL;
+}
+
+static inline EGLDisplay
+weston_platform_get_egl_display(EGLenum platform, void *native_display,
+                               const EGLint *attrib_list)
+{
+       static PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display = NULL;
+
+       if (!get_platform_display) {
+               get_platform_display = (PFNEGLGETPLATFORMDISPLAYEXTPROC)
+            weston_platform_get_egl_proc_address(
+                "eglGetPlatformDisplayEXT");
+       }
+
+       if (get_platform_display)
+               return get_platform_display(platform,
+                                           native_display, attrib_list);
+
+       return eglGetDisplay((EGLNativeDisplayType) native_display);
+}
+
+static inline EGLSurface
+weston_platform_create_egl_surface(EGLDisplay dpy, EGLConfig config,
+                                  void *native_window,
+                                  const EGLint *attrib_list)
+{
+       static PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC
+               create_platform_window = NULL;
+
+       if (!create_platform_window) {
+               create_platform_window = (PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC)
+            weston_platform_get_egl_proc_address(
+                "eglCreatePlatformWindowSurfaceEXT");
+       }
+
+       if (create_platform_window)
+               return create_platform_window(dpy, config,
+                                             native_window,
+                                             attrib_list);
+
+       return eglCreateWindowSurface(dpy, config,
+                                     (EGLNativeWindowType) native_window,
+                                     attrib_list);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* WESTON_PLATFORM_H */