2 files changed, 51 insertions, 0 deletions
diff --git a/apps/.gitignore b/apps/.gitignore
new file mode 100644
index 0000000..d66f8c4
--- /dev/null
+++ b/apps/.gitignore
@@ -0,0 +1 @@
+surfaceless
diff --git a/apps/surfaceless.c b/apps/surfaceless.c
new file mode 100644
index 0000000..7eb2567
--- /dev/null
+++ b/apps/surfaceless.c
@@ -0,0 +1,50 @@
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+int main (int32_t argc, char* argv[]) {
+    bool res;
+    EGLDisplay egl_dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+
+    res = eglInitialize(egl_dpy, NULL, NULL);
+    assert(res);
+
+    const char *egl_extension_st = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+    assert(strstr(egl_extension_st, "EGL_KHR_create_context") != NULL);
+    assert(strstr(egl_extension_st, "EGL_KHR_surfaceless_context") != NULL);
+
+    static const EGLint config_attribs[] = {
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+        EGL_NONE
+    };
+    EGLConfig cfg;
+    EGLint count;
+
+    res = eglChooseConfig(egl_dpy, config_attribs, &cfg, 1, &count);
+    assert(res);
+
+    res = eglBindAPI(EGL_OPENGL_ES_API);
+    assert(res);
+
+    static const EGLint attribs[] = {
+        EGL_CONTEXT_CLIENT_VERSION, 3,
+        EGL_NONE
+    };
+    EGLContext ctx = eglCreateContext(egl_dpy,
+            cfg,
+            EGL_NO_CONTEXT,
+            attribs);
+    assert(ctx != EGL_NO_CONTEXT);
+
+    res = eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, ctx);
+    assert(res);
+
+    eglDestroyContext(egl_dpy, ctx);
+    eglTerminate(egl_dpy);
+
+    return 0;
+}