Add libEGL shim

1 files changed, 26 insertions, 0 deletions

diff --git a/src/libEGL.c b/src/libEGL.c
new file mode 100644
index 0000000..da858bc
--- /dev/null
+++ b/src/libEGL.c
@@ -0,0 +1,26 @@
+#include <dlfcn.h>
+#include <EGL/egl.h>
+#include <GLFW/glfw3.h>
+#define GLFW_EXPOSE_NATIVE_X11
+#include <GLFW/glfw3native.h>
+
+struct ANativeWindow {
+   GLFWwindow *glfw;
+};
+
+EGLDisplay
+eglGetDisplay(EGLNativeDisplayType native_display)
+{
+   static EGLDisplay (*orig_eglGetDisplay)(EGLNativeDisplayType native_display);
+   if (!orig_eglGetDisplay) orig_eglGetDisplay = dlsym(RTLD_NEXT, "eglGetDisplay");
+   return orig_eglGetDisplay(glfwGetX11Display());
+}
+
+EGLSurface
+eglCreateWindowSurface(EGLDisplay display, EGLConfig config, NativeWindowType native_window, EGLint const *attrib_list)
+{
+   static EGLSurface (*orig_eglCreateWindowSurface)(EGLDisplay display, EGLConfig config, NativeWindowType native_window, EGLint const *attrib_list);
+   if (!orig_eglCreateWindowSurface) orig_eglCreateWindowSurface = dlsym(RTLD_NEXT, "eglCreateWindowSurface");
+   struct ANativeWindow *win = (struct ANativeWindow*)native_window;
+   return orig_eglCreateWindowSurface(display, config, glfwGetX11Window(win->glfw), attrib_list);
+}