Put nuklear into its own ffi

source/engine/nuke.c

@@ -0,0 +1,43 @@
+#define NK_INCLUDE_FIXED_TYPES
+#define NK_INCLUDE_STANDARD_IO
+#define NK_INCLUDE_STANDARD_VARARGS
+#define NK_INCLUDE_DEFAULT_ALLOCATOR
+#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
+#define NK_INCLUDE_FONT_BAKING
+#define NK_INCLUDE_DEFAULT_FONT
+#define NK_IMPLEMENTATION
+#define NK_GLFW_GL3_IMPLEMENTATION
+#define NK_KEYSTATE_BASED_INPUT
+
+#include "nuke.h"
+
+#include "window.h"
+
+#define MAX_VERTEX_BUFFER 512 * 1024
+#define MAX_ELEMENT_BUFFER 128 * 1024
+
+struct nk_context *ctx;
+static struct nk_glfw nkglfw = {0};
+
+
+void nuke_init(struct mSDLWindow *win) {
+    window_makecurrent(win);
+
+    ctx = nk_glfw3_init(&nkglfw, win->window, NK_GLFW3_INSTALL_CALLBACKS);
+
+    struct nk_font_atlas *atlas;
+    nk_glfw3_font_stash_begin(&nkglfw, &atlas);
+    struct nk_font *noto = nk_font_atlas_add_from_file(atlas, "fonts/notosans.tff", 14, 0);
+    nk_glfw3_font_stash_end(&nkglfw);
+}
+
+void nuke_start()
+{
+    nk_glfw3_new_frame(&nkglfw);
+}
+
+void nuke_end()
+{
+    nk_end(ctx);
+    nk_glfw3_render(&nkglfw, NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
+}