glesv2: alternative include directive for iOS

[nit.git] / lib / gamnit / gamnit.nit

diff --git a/lib/gamnit/gamnit.nit b/lib/gamnit/gamnit.nit
index fccf2ae..05bd122 100644 (file)
--- a/lib/gamnit/gamnit.nit
+++ b/lib/gamnit/gamnit.nit
@@ -26,18 +26,37 @@ import gamnit_linux is conditional(linux)
 
 redef class App
 
-       # Main `GamnitDisplay` initialized by `on_create`
+       # Main `GamnitDisplay` initialized by `create_gamnit`
        var display: nullable GamnitDisplay = null
 
-       redef fun on_create
+       # Hook to setup the OpenGL context: compiling shaders, creating VBO, reloading textures, etc.
+       #
+       # The gamnit services redefine this method to prepare optimizations and more.
+       # Clients may also refine this method to prepare custom OpenGL resources.
+       fun create_gamnit
        do
-               super
-
                var display = new GamnitDisplay
                display.setup
                self.display = display
+
+               # Print the current GL configuration, for debugging
+               print "GL vendor: {glGetString(gl_VENDOR)}"
+               print "GL renderer: {glGetString(gl_RENDERER)}"
+               print "GL version: {glGetString(gl_VERSION)}"
+               print "GLSL version: {glGetString(gl_SHADING_LANGUAGE_VERSION)}"
+               print "GL extensions: {glGetString(gl_EXTENSIONS)}"
+               print "GL max texture size: {glGetIntegerv(gl_MAX_TEXTURE_SIZE, 0)}"
        end
 
+       # Hook for client programs to setup the scene
+       #
+       # Refine this method to build the game world or the main menu,
+       # creating instances of `Sprite` and `Actor` as needed.
+       #
+       # This method is called only once per execution of the program and it should
+       # be considered as the entry point of most game logic.
+       fun create_scene do end
+
        # Core of the frame logic, executed only when the display is visible
        #
        # This method should be redefined by user modules to customize the behavior of the game.
@@ -83,3 +102,8 @@ redef class App
        # The framework handles resizing the viewport automatically.
        fun on_resize(display: GamnitDisplay) do end
 end
+
+# Portable indirection to `glBindFramebuffer(gl_FRAMEBUFFER, fbo)`
+#
+# This is implemented differently on iOS.
+fun bind_screen_framebuffer(fbo: Int) do glBindFramebuffer(gl_FRAMEBUFFER, fbo)