Added shaders from i-mic-fps, preload shaders if cyberarm_engine/opengl has been required.

lib/cyberarm_engine/builtin/intro_state.rb

@@ -7,8 +7,8 @@ module CyberarmEngine
       @title_size = 56
       @caption_size = 24
 
-      @title = CyberarmEngine::Text.new("", size: @title_size, shadow_color: 0xaa_222222)
-      @caption = CyberarmEngine::Text.new("", size: @caption_size, shadow_color: 0xaa_222222)
+      @title = CyberarmEngine::Text.new("", size: @title_size, shadow_color: 0xaa_222222, static: true)
+      @caption = CyberarmEngine::Text.new("", size: @caption_size, shadow_color: 0xaa_222222, static: true)
 
       @spacer_width = 256
       @spacer_height = 6

lib/cyberarm_engine/opengl.rb

@@ -11,7 +11,19 @@ module CyberarmEngine
     if e != GL_NO_ERROR
       warn "OpenGL error detected by handler at: #{caller[0]}"
       warn "    #{gluErrorString(e)} (#{e})\n"
-      exit if window.exit_on_opengl_error?
+      exit if Window.instance&.exit_on_opengl_error?
+    end
+  end
+
+  def preload_default_shaders
+    shaders = %w[g_buffer lighting]
+    shaders.each do |shader|
+      Shader.new(
+        name: shader,
+        includes_dir: "#{CYBERARM_ENGINE_ROOT_PATH}/assets/shaders/include",
+        vertex: "#{CYBERARM_ENGINE_ROOT_PATH}/assets/shaders/vertex/#{shader}.glsl",
+        fragment: "#{CYBERARM_ENGINE_ROOT_PATH}/assets/shaders/fragment/#{shader}.glsl"
+      )
     end
   end
 end

lib/cyberarm_engine/opengl/renderer/g_buffer.rb

@@ -1,6 +1,7 @@
 module CyberarmEngine
   class GBuffer
     attr_reader :screen_vbo, :vertices, :uvs
+    attr_reader :width, :height
 
     def initialize(width:, height:)
       @width = width

lib/cyberarm_engine/window.rb

@@ -41,6 +41,7 @@ module CyberarmEngine
 
       @states = []
       @exit_on_opengl_error = false
+      preload_default_shaders if respond_to?(:preload_default_shaders)
 
       setup if defined?(setup)
     end