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    • By fleissi
      Hey guys!

      I'm new here and I recently started developing my own rendering engine. It's open source, based on OpenGL/DirectX and C++.
      The full source code is hosted on github:
      https://github.com/fleissna/flyEngine

      I would appreciate if people with experience in game development / engine desgin could take a look at my source code. I'm looking for honest, constructive criticism on how to improve the engine.
      I'm currently writing my master's thesis in computer science and in the recent year I've gone through all the basics about graphics programming, learned DirectX and OpenGL, read some articles on Nvidia GPU Gems, read books and integrated some of this stuff step by step into the engine.

      I know about the basics, but I feel like there is some missing link that I didn't get yet to merge all those little pieces together.

      Features I have so far:
      - Dynamic shader generation based on material properties
      - Dynamic sorting of meshes to be renderd based on shader and material
      - Rendering large amounts of static meshes
      - Hierarchical culling (detail + view frustum)
      - Limited support for dynamic (i.e. moving) meshes
      - Normal, Parallax and Relief Mapping implementations
      - Wind animations based on vertex displacement
      - A very basic integration of the Bullet physics engine
      - Procedural Grass generation
      - Some post processing effects (Depth of Field, Light Volumes, Screen Space Reflections, God Rays)
      - Caching mechanisms for textures, shaders, materials and meshes

      Features I would like to have:
      - Global illumination methods
      - Scalable physics
      - Occlusion culling
      - A nice procedural terrain generator
      - Scripting
      - Level Editing
      - Sound system
      - Optimization techniques

      Books I have so far:
      - Real-Time Rendering Third Edition
      - 3D Game Programming with DirectX 11
      - Vulkan Cookbook (not started yet)

      I hope you guys can take a look at my source code and if you're really motivated, feel free to contribute :-)
      There are some videos on youtube that demonstrate some of the features:
      Procedural grass on the GPU
      Procedural Terrain Engine
      Quadtree detail and view frustum culling

      The long term goal is to turn this into a commercial game engine. I'm aware that this is a very ambitious goal, but I'm sure it's possible if you work hard for it.

      Bye,

      Phil
    • By tj8146
      I have attached my project in a .zip file if you wish to run it for yourself.
      I am making a simple 2d top-down game and I am trying to run my code to see if my window creation is working and to see if my timer is also working with it. Every time I run it though I get errors. And when I fix those errors, more come, then the same errors keep appearing. I end up just going round in circles.  Is there anyone who could help with this? 
       
      Errors when I build my code:
      1>Renderer.cpp 1>c:\users\documents\opengl\game\game\renderer.h(15): error C2039: 'string': is not a member of 'std' 1>c:\program files (x86)\windows kits\10\include\10.0.16299.0\ucrt\stddef.h(18): note: see declaration of 'std' 1>c:\users\documents\opengl\game\game\renderer.h(15): error C2061: syntax error: identifier 'string' 1>c:\users\documents\opengl\game\game\renderer.cpp(28): error C2511: 'bool Game::Rendering::initialize(int,int,bool,std::string)': overloaded member function not found in 'Game::Rendering' 1>c:\users\documents\opengl\game\game\renderer.h(9): note: see declaration of 'Game::Rendering' 1>c:\users\documents\opengl\game\game\renderer.cpp(35): error C2597: illegal reference to non-static member 'Game::Rendering::window' 1>c:\users\documents\opengl\game\game\renderer.cpp(36): error C2597: illegal reference to non-static member 'Game::Rendering::window' 1>c:\users\documents\opengl\game\game\renderer.cpp(43): error C2597: illegal reference to non-static member 'Game::Rendering::window' 1>Done building project "Game.vcxproj" -- FAILED. ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========  
       
      Renderer.cpp
      #include <GL/glew.h> #include <GLFW/glfw3.h> #include "Renderer.h" #include "Timer.h" #include <iostream> namespace Game { GLFWwindow* window; /* Initialize the library */ Rendering::Rendering() { mClock = new Clock; } Rendering::~Rendering() { shutdown(); } bool Rendering::initialize(uint width, uint height, bool fullscreen, std::string window_title) { if (!glfwInit()) { return -1; } /* Create a windowed mode window and its OpenGL context */ window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL); if (!window) { glfwTerminate(); return -1; } /* Make the window's context current */ glfwMakeContextCurrent(window); glViewport(0, 0, (GLsizei)width, (GLsizei)height); glOrtho(0, (GLsizei)width, (GLsizei)height, 0, 1, -1); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glfwSwapInterval(1); glEnable(GL_SMOOTH); glEnable(GL_DEPTH_TEST); glEnable(GL_BLEND); glDepthFunc(GL_LEQUAL); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glEnable(GL_TEXTURE_2D); glLoadIdentity(); return true; } bool Rendering::render() { /* Loop until the user closes the window */ if (!glfwWindowShouldClose(window)) return false; /* Render here */ mClock->reset(); glfwPollEvents(); if (mClock->step()) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glfwSwapBuffers(window); mClock->update(); } return true; } void Rendering::shutdown() { glfwDestroyWindow(window); glfwTerminate(); } GLFWwindow* Rendering::getCurrentWindow() { return window; } } Renderer.h
      #pragma once namespace Game { class Clock; class Rendering { public: Rendering(); ~Rendering(); bool initialize(uint width, uint height, bool fullscreen, std::string window_title = "Rendering window"); void shutdown(); bool render(); GLFWwindow* getCurrentWindow(); private: GLFWwindow * window; Clock* mClock; }; } Timer.cpp
      #include <GL/glew.h> #include <GLFW/glfw3.h> #include <time.h> #include "Timer.h" namespace Game { Clock::Clock() : mTicksPerSecond(50), mSkipTics(1000 / mTicksPerSecond), mMaxFrameSkip(10), mLoops(0) { mLastTick = tick(); } Clock::~Clock() { } bool Clock::step() { if (tick() > mLastTick && mLoops < mMaxFrameSkip) return true; return false; } void Clock::reset() { mLoops = 0; } void Clock::update() { mLastTick += mSkipTics; mLoops++; } clock_t Clock::tick() { return clock(); } } TImer.h
      #pragma once #include "Common.h" namespace Game { class Clock { public: Clock(); ~Clock(); void update(); bool step(); void reset(); clock_t tick(); private: uint mTicksPerSecond; ufloat mSkipTics; uint mMaxFrameSkip; uint mLoops; uint mLastTick; }; } Common.h
      #pragma once #include <cstdio> #include <cstdlib> #include <ctime> #include <cstring> #include <cmath> #include <iostream> namespace Game { typedef unsigned char uchar; typedef unsigned short ushort; typedef unsigned int uint; typedef unsigned long ulong; typedef float ufloat; }  
      Game.zip
    • By Ty Typhoon
      Before read everything i am honest:
      Payment after release you get your percentage lifetime for that project.
       
      Second:
      i dont need your inspirations, ideas, music or designs.
      My head is full with that.
      I need workers who i can trust.
       
       
       
      Please let us talk in discord.
      I got a lot of stuff planned, there is much work to do.
       
      But first my team and me try to start with a small mini game and we need maybe exactly you.
      Planned for more than pc, like ps4, xbox one and mobile - so its very important to us to hopefully welcome a programmer.
       
      The mini game will be part of the planned big game. There will be never before seen guns and gameplay, you will get deeper info if youre a safe part of the team.
       
      I need:
      Programmers
      Animators
      Zbrush pros
       
      Join here please:
      https://discord.gg/YtjE3sV
       
      You find me here:
      Joerg Federmann Composing#2898
       
       
    • By Ty Typhoon
      I like to build my A - Team now.
       
      I need loyal people who can trust and believe in a dream.
      If you got time and no need for direct pay please contact me now.
       
      We cant pay now, you will recieve a lifetime percentage if the released game will give earnings. 
      If I get the best people together for a team, everything should be possible.
       
       
      What i need:
      - Programmer c++
      - Unity / Unreal - we must check whats possible, please share your experience with me.
      - Sculpter, 3D Artist
      - Animator
      - Marketing / Promotion 
       
       
      What i do:
      - Studio Owner
      - Director
      - Recruit exactly you
      - Sounddesign
      - Main theme composing
      - Vocals
      - Game design
      - Gun, swords, shields and weapon design
      - Character, plants and animal design
       
       
      Please dont ask about the Name of the Game, about Designs or Screenshots.
      The game will be defintitly affected about our and your skills if you join the team.
       
       
      Planned for the big Game:
      - 1st person shooter
      - online multiplayer
      - character manipulation
      - complete big open world with like lifetime actions and reactions
      - gunstore with many items to buy
      - many upgrades for players
      - specials like mini games
       
      So if you are interested in joining a team with a nearly complete game idea, contact me now and tell me what you can do.
       
      discord:
      joerg federmann composing#2898
       
       
    • By codelyoko373
      I wasn't sure if this would be the right place for a topic like this so sorry if it isn't.
      I'm currently working on a project for Uni using FreeGLUT to make a simple solar system simulation. I've got to the point where I've implemented all the planets and have used a Scene Graph to link them all together. The issue I'm having with now though is basically the planets and moons orbit correctly at their own orbit speeds.
      I'm not really experienced with using matrices for stuff like this so It's likely why I can't figure out how exactly to get it working. This is where I'm applying the transformation matrices, as well as pushing and popping them. This is within the Render function that every planet including the sun and moons will have and run.
      if (tag != "Sun") { glRotatef(orbitAngle, orbitRotation.X, orbitRotation.Y, orbitRotation.Z); } glPushMatrix(); glTranslatef(position.X, position.Y, position.Z); glRotatef(rotationAngle, rotation.X, rotation.Y, rotation.Z); glScalef(scale.X, scale.Y, scale.Z); glDrawElements(GL_TRIANGLES, mesh->indiceCount, GL_UNSIGNED_SHORT, mesh->indices); if (tag != "Sun") { glPopMatrix(); } The "If(tag != "Sun")" parts are my attempts are getting the planets to orbit correctly though it likely isn't the way I'm meant to be doing it. So I was wondering if someone would be able to help me? As I really don't have an idea on what I would do to get it working. Using the if statement is truthfully the closest I've got to it working but there are still weird effects like the planets orbiting faster then they should depending on the number of planets actually be updated/rendered.
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Integrating Pango Font Loading Library into C++ project

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Hello community!

I am currently trying to implement text rendering into my C++ game engine, which is based on OpenGL with GLFW. I had text rendering working with the FreeType Library, but unfortunately it does not support GPOS Tables for Kerning, which seems to be used by most fonts nowadays. 

So this is why I want to switch to the Pango Library, which is said to support GPOS Tables. But unfortunately I could not find any guides on how to install or use this library and i do not have enough experience yet to figure it out by myself. On the Pango website they say Pango depends on a few font backends, either:

- FreeType, fontconfig and Harfbuzz 

- Uniscribe and Cairo (Windows only?)

- CoreText and Cairo (MacOSX only?)

 

But I do not know which to choose. All I really need is a library which can read .ttf files and render the contained glyphs into simple bitmaps along with providing metric information and kerning maps. I will then store all the glyphs in an atlas texture and handle the screen rendering and text layout myself.

Furthermore, I need help installing these backends together with Pango. Can anyone help me with this?

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15 hours ago, stimulate said:

But unfortunately I could not find any guides on how to install

Here ? You'll have to download the matching binaries (32/64 bits), install it, and use the headers/libraries in your project.

15 hours ago, stimulate said:

or use this library

Here. But this is for old OpenGL.

I was using Pango for drawing text, but with old OpenGL too. I'll have to check how to make it work with modern OpenGL, but unfortunately I don't know when I'll have time to do that...

 

15 hours ago, stimulate said:

i do not have enough experience yet to figure it out by myself

Unfortunately all these Gtk libraries (Gtk, Gdk, Cairo, Pango, Atk...) are more made for people who are not afraid to make their hands dirty... Generally, there are few good documentation (except API reference but this is often useless), their API might change often, and support is left to their very tiny close 'fraternities'.

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