Added dependance on cyberarm_engine, removed duplicate code which is in cyberarm_engine

lib/renderer/shader.rb

@@ -1,127 +0,0 @@
-class IMICFPS
-  # Ref: https://github.com/vaiorabbit/ruby-opengl/blob/master/sample/OrangeBook/brick.rb
-  class Shader
-    include OpenGL
-
-    def initialize(name:, vertex_file:, fragment_file:)
-      @name = name
-      @vertex_file   = vertex_file
-      @fragment_file = fragment_file
-      @compiled = false
-
-      @error_buffer_size = 1024
-      @variable_missing = {}
-
-      create_shaders
-      compile_shaders
-
-      # Only add shader to ShaderManager if it successfully compiles
-      if @compiled
-        ShaderManager.add_shader(@name, self)
-      else
-        puts "FAILED to compile shader: #{@name}", ""
-      end
-    end
-
-    def shader_files_exist?
-      File.exists?(@vertex_file) && File.exists?(@fragment_file)
-    end
-
-    def create_shaders
-      return unless shader_files_exist?
-
-      @vertex   = glCreateShader(GL_VERTEX_SHADER)
-      @fragment = glCreateShader(GL_FRAGMENT_SHADER)
-
-      source = [File.read(@vertex_file)].pack('p')
-      size   = [File.size(@vertex_file)].pack('I')
-      glShaderSource(@vertex, 1, source, size)
-
-      source = [File.read(@fragment_file)].pack('p')
-      size   = [File.size(@fragment_file)].pack('I')
-      glShaderSource(@fragment, 1, source, size)
-    end
-
-    def compile_shaders
-      return unless shader_files_exist?
-
-      glCompileShader(@vertex)
-      buffer = '    '
-      glGetShaderiv(@vertex, GL_COMPILE_STATUS, buffer)
-      compiled = buffer.unpack('L')[0]
-
-      if compiled == 0
-        log = ' ' * @error_buffer_size
-        glGetShaderInfoLog(@vertex, @error_buffer_size, nil, log)
-        puts "Shader Error: Program \"#{@name}\""
-        puts "  Vector Shader InfoLog:", "  #{log.strip.split("\n").join("\n  ")}\n\n"
-        puts "  Shader Compiled status: #{compiled}"
-        puts "    NOTE: assignment of uniforms in shaders is illegal!"
-        puts
-        return
-      end
-
-      glCompileShader(@fragment)
-      buffer = '    '
-      glGetShaderiv(@fragment, GL_COMPILE_STATUS, buffer)
-      compiled = buffer.unpack('L')[0]
-
-      if compiled == 0
-        log = ' ' * @error_buffer_size
-        glGetShaderInfoLog(@fragment, @error_buffer_size, nil, log)
-        puts "Shader Error: Program \"#{@name}\""
-        puts "  Fragment Shader InfoLog:", "  #{log.strip.split("\n").join("\n  ")}\n\n"
-        puts "  Shader Compiled status: #{compiled}"
-        puts "    NOTE: assignment of uniforms in shader is illegal!"
-        puts
-        return
-      end
-
-      @program = glCreateProgram
-      glAttachShader(@program, @vertex)
-      glAttachShader(@program, @fragment)
-      glLinkProgram(@program)
-
-      buffer = '    '
-      glGetProgramiv(@program, GL_LINK_STATUS, buffer)
-      linked = buffer.unpack('L')[0]
-
-      if linked == 0
-        log = ' ' * @error_buffer_size
-        glGetProgramInfoLog(@program, @error_buffer_size, nil, log)
-        puts "Shader Error: Program \"#{@name}\""
-        puts "  Program InfoLog:", "  #{log.strip.split("\n").join("\n  ")}\n\n"
-      end
-
-      @compiled = linked == 0 ? false : true
-    end
-
-    # Returns the location of a uniform variable
-    def variable(variable)
-      loc = glGetUniformLocation(@program, variable)
-      if (loc == -1)
-        puts "Shader Error: Program \"#{@name}\" has no such uniform named \"#{variable}\"", "  Is it used in the shader? GLSL may have optimized it out.", "  Is it miss spelled?" unless @variable_missing[variable]
-        @variable_missing[variable] = true
-      end
-      return loc
-    end
-
-    def use(&block)
-      return unless compiled?
-      glUseProgram(@program)
-
-      if block
-        block.call(self)
-        stop
-      end
-    end
-
-    def stop
-      glUseProgram(0)
-    end
-
-    def compiled?
-      @compiled
-    end
-  end
-end