1 files changed, 65 insertions, 0 deletions
diff --git a/platform/default/headless_display_egl.cpp b/platform/default/headless_display_egl.cpp
new file mode 100644
index 0000000000..03c8e16a59
--- /dev/null
+++ b/platform/default/headless_display_egl.cpp
@@ -0,0 +1,65 @@
+#include <mbgl/gl/headless_display.hpp>
+#include <mbgl/util/logging.hpp>
+#include <mbgl/util/string.hpp>
+
+#include <EGL/egl.h>
+
+namespace mbgl {
+
+class HeadlessDisplay::Impl {
+public:
+    Impl();
+    ~Impl();
+
+    EGLDisplay display = EGL_NO_DISPLAY;
+    EGLConfig config = 0;
+};
+
+HeadlessDisplay::Impl::Impl() {
+    display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (display == EGL_NO_DISPLAY) {
+        throw std::runtime_error("Failed to obtain a valid EGL display.\n");
+    }
+
+    EGLint major, minor, numConfigs;
+    if (!eglInitialize(display, &major, &minor)) {
+        throw std::runtime_error("eglInitialize() failed.\n");
+    }
+
+    if (!eglBindAPI(EGL_OPENGL_ES_API)) {
+        mbgl::Log::Error(mbgl::Event::OpenGL, "eglBindAPI(EGL_OPENGL_ES_API) returned error %d", eglGetError());
+        throw std::runtime_error("eglBindAPI() failed");
+    }
+
+    const EGLint attribs[] = {
+        EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
+        EGL_NONE
+    };
+
+    if (!eglChooseConfig(display, attribs, &config, 1, &numConfigs) || numConfigs != 1) {
+        throw std::runtime_error("Failed to choose ARGB config.\n");
+    }
+}
+
+HeadlessDisplay::Impl::~Impl() {
+    eglTerminate(display);
+}
+
+template <>
+EGLDisplay HeadlessDisplay::attribute() const {
+    return impl->display;
+}
+
+template <>
+EGLConfig& HeadlessDisplay::attribute() const {
+    return impl->config;
+}
+
+HeadlessDisplay::HeadlessDisplay()
+    : impl(std::make_unique<Impl>()) {
+}
+
+HeadlessDisplay::~HeadlessDisplay() {
+}
+
+} // namespace mbgl