Improved shader error formatting, hide puts statements that are only useful in debug mode.

lib/objects/light.rb

@@ -20,7 +20,7 @@ class IMICFPS
 
     def available_light
       raise "Using to many lights, #{LightManager.light_count}/#{LightManager::MAX_LIGHTS}" if LightManager.light_count > LightManager::MAX_LIGHTS
-      puts "OpenGL::GL_LIGHT#{LightManager.light_count}"
+      puts "OpenGL::GL_LIGHT#{LightManager.light_count}" if $debug
       @light_id = Object.const_get "OpenGL::GL_LIGHT#{LightManager.light_count}"
     end
 

lib/renderer/opengl_renderer.rb

@@ -29,6 +29,8 @@ class IMICFPS
 
       if ShaderManager.shader("lighting")
         ShaderManager.shader("lighting").use do |shader|
+          glUniform3f(shader.variable("SunLight"), 1.0, 1.0, 1.0)
+
           handleGlError
           draw_mesh(object.model)
           object.draw

lib/renderer/shader.rb

@@ -10,10 +10,12 @@ class IMICFPS
       @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
@@ -51,9 +53,12 @@ class IMICFPS
       if compiled == 0
         log = ' ' * @error_buffer_size
         glGetShaderInfoLog(@vertex, @error_buffer_size, nil, log)
-        puts "Vertex Shader InfoLog:\n#{log.strip}\n"
+        puts "Shader Error: Program \"#{@name}\""
+        puts "  Vertex 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)
@@ -64,9 +69,12 @@ class IMICFPS
       if compiled == 0
         log = ' ' * @error_buffer_size
         glGetShaderInfoLog(@fragment, @error_buffer_size, nil, log)
-        puts "Fragment Shader InfoLog:\n#{log.strip}\n"
+        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
@@ -81,7 +89,8 @@ class IMICFPS
       if linked == 0
         log = ' ' * @error_buffer_size
         glGetProgramInfoLog(@program, @error_buffer_size, nil, log)
-        puts "Program InfoLog:\n#{log.strip}\n"
+        puts "Shader Error: Program \"#{@name}\""
+        puts "  Program InfoLog:", "  #{log.strip.split("\n").join("\n  ")}\n\n"
       end
 
       @compiled = linked == 0 ? false : true
@@ -91,7 +100,8 @@ class IMICFPS
     def variable(variable)
       loc = glGetUniformLocation(@program, variable)
       if (loc == -1)
-        puts "Shader:\"#{@name}\" No such uniform named #{variable}"
+        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
@@ -100,8 +110,13 @@ class IMICFPS
       return unless compiled?
       glUseProgram(@program)
 
-      block.call(self) if block
+      if block
+        block.call(self)
+        stop
+      end
+    end
 
+    def stop
       glUseProgram(0)
     end
 

lib/states/game_states/loading_state.rb

@@ -15,7 +15,7 @@ class IMICFPS
       add_asset(:obj, "objects/biped.obj")
 
       # Currently broken
-      # Shader.new(name: "lighting", vertex_file: "shaders/vertex/lighting.glsl", fragment_file: "shaders/fragment/lighting.glsl")
+      Shader.new(name: "lighting", vertex_file: "shaders/vertex/lighting.glsl", fragment_file: "shaders/fragment/lighting.glsl")
 
       @act = false
       @cycled = false

lib/wavefront/model.rb

@@ -53,14 +53,14 @@ class IMICFPS
 
         parse
 
-        puts "#{@file_path.split('/').last} took #{((Process.clock_gettime(Process::CLOCK_MONOTONIC, :float_millisecond)-start_time)/1000.0).round(2)} seconds to parse"
+        puts "#{@file_path.split('/').last} took #{((Process.clock_gettime(Process::CLOCK_MONOTONIC, :float_millisecond)-start_time)/1000.0).round(2)} seconds to parse" if $debug
 
         # populate_buffers
 
         face_count = 0
         @objects.each {|o| face_count+=o.faces.size}
         @objects.each_with_index do |o, i|
-          puts "    Model::Object Name: #{o.name}, Faces: #{o.faces.size}"
+          puts "    Model::Object Name: #{o.name}, Faces: #{o.faces.size}" if $debug
         end
         $window.number_of_faces+=face_count
         @model_has_texture = false

lib/wavefront/parser.rb

@@ -50,7 +50,7 @@ class IMICFPS
           end
         end
 
-        puts "Total Lines: #{lines}"
+        puts "Total Lines: #{lines}" if $debug
         calculate_bounding_box(@vertices, @bounding_box)
         @objects.each do |o|
           calculate_bounding_box(o.vertices, o.bounding_box)

shaders/vertex/lighting.glsl

@@ -1,7 +1,8 @@
 # version 150
 # extension GL_ARB_explicit_attrib_location : enable
 
-layout(location = 0) in vec3 vert;
+in vec3 vert;
+uniform vec3 SunLight;
 
 void main() {
   gl_Position = vec4(vert, 1.0);