finally compiling and running, text still needs rework

src/rendering/twn_gpu_texture_c.h

@@ -0,0 +1,21 @@
+#ifndef TWN_GPU_TEXTURE_C_H
+#define TWN_GPU_TEXTURE_C_H
+
+#include <stdbool.h>
+
+typedef GLuint gpu_texture;
+
+enum texture_filter {
+    TEXTURE_FILTER_NEAREAST,
+    TEXTURE_FILTER_LINEAR,
+};
+
+gpu_texture create_gpu_texture(enum texture_filter filter, bool generate_mipmaps);
+
+void delete_gpu_texture(gpu_texture texture);
+
+void upload_gpu_texture(gpu_texture texture, void *pixels, int channels, int width, int height);
+
+void bind_gpu_texture(gpu_texture texture);
+
+#endif