Tagged Questions
-1
votes
0answers
107 views
c++ game programming course [closed]
Does some one know some good C++ Game programming course? I've tried lots of tutorial of OpenGL (3.3+). I've done simple games using opengl and glsl... but... game programming is another thing.
...
3
votes
2answers
64 views
using DirectX to generate a sprite sheet
I am building a site in HTML5 for my client and it must run on the iPad/iPhone (i.e. Safari on iOS).
They want a 3D effect where they have a simple, yet, specific product they want to show on the ...
0
votes
1answer
144 views
How do I implement my old OpenGL-based gfx_render_triangle_list using DX11?
I am working at a game that has lots of procedural content. I had built a game engine using OpenGL that handles everything needed for creating a basic 2D game, sprites, primitives, blending, polygons ...
2
votes
1answer
136 views
Rotation matrix from OpenGL to DirectX
I have an application which uses openGL and i have to port it to DirectX.
To sum up my issue : How can I port rotation matrix based on a right-handed coordinate system to a left-handed coordinate ...
3
votes
1answer
389 views
creating a UI menu in c++
Im currently working on a 2D Game where the users can interact with specific nodes and are able to edit certain bits of information and I also plan for the users to be able to click buttons to set ...
4
votes
4answers
395 views
Why do most game devs prefer OGL for OS X and D3D for Windows? [closed]
Today I decided to check what Diablo 3 developers used to do graphics: OpenGL or Direct3D? My mind was completely blown: For Windows, they've used D3D and for OS X they've used OGL.
I did some ...
-2
votes
1answer
352 views
How can I switch between DirectX and OpenGL renderer in my engine?
I am currently developing my engine with DirectX, but I want to make it cross-platform in the future, using OpenGL.
How can I check which platform my engine is running on?
And can I use an if ...
5
votes
1answer
203 views
What are the rest of the blending functions used for?
In general, I know of five ways to make use of blending functions (these are for OpenGL, but replace glBlendFunc() with SetRenderState(D3DRS_SRCBLEND) and SetRenderState(D3DRS_DESTBLEND) for DirectX):
...
2
votes
2answers
611 views
OpenGL vs DirectX difference from Graphics card perspective?
I want to know the difference in purely hardware level if there is any. For example the most simple question: Is there a chip for DirectX and another chip for OpenGL? What do hardware producers do to ...
2
votes
2answers
578 views
Does Monogame on Windows Desktop use OpenGL or DirectX by default?
if i use monogame 3.0 beta on windows desktop, does it use the directx renderer (sharpdx) or the opengl renderer by default?
if it uses directx is there away to make sharpdx call directly? thanks!
0
votes
3answers
236 views
Event Based Render / Update Loop
I'm working on a few game dev tools which use OpenGL or DirectX to render 3D models (viewing).
Consider your favorite 3D modeling software package (Softimage, Maya, 3DS Max, modo, etc.). Note that ...
2
votes
1answer
86 views
Do shader program compilers optimise divide-by-PoT-constants to bitshift operations?
So just to restate that, let's say we have this:
float f = g / 2;
Given the divisor is a constant, will the shader compiler auto-optimise this to a bitshift operation, as some language compilers are ...
15
votes
2answers
778 views
What's the difference between mesh and a model?
Which one is created first? For example if a team worked on a graphical asset of a car, what would be a model and what would be a mesh of the car?
1
vote
0answers
267 views
Managing many draw calls for dynamic objects
We are developing a game (cross-platform) using Irrlicht. The game has many (around 200 - 500) dynamic objects flying around during the game. Most of these objects are static mesh and build from 20 - ...
3
votes
2answers
190 views
How to reconcile depth ordering with minimal shader context changes?
We generally want to minimise shader-program switches (glUseProgram and all associated context changes) for the sake of performance. AFAIK it is not uncommon to render by shader program, i.e. group ...
0
votes
2answers
754 views
OpenGL matrix vs DirectX matrix
I'm working on an animation and model exporter from Maya to use within my game. Currently, models work perfectly, and animations have some issues with the joints. Since Maya works in an OpenGL ...
0
votes
0answers
194 views
DirectX/OpenGL materials -> Blender materials?
I'm writing an importer for a format with standard DirectX materials.
The material values are:
diffuse - r,g,b,a (floats)
ambient - r,g,b,a (floats)
specular - r,g,b,a (floats)
emissive ...
2
votes
1answer
469 views
What does multisampling skip or improve? (so it can be faster than supersampling)
I never really fully understood this, or found an article which explained all the steps in a friendly way.
I'll start with what I do know already (which I hope do not contain misconceptions). I'm ...
1
vote
0answers
188 views
Framework to implement an in game gui editor
I need to do an in game gui editor. The game engine has his own widgets elements and I don't want a gui library that substitute it.
The most difficult task is the implementation of the functionality ...
0
votes
1answer
1k views
Triple buffering causes input lag?
Consider some time in between two vsyncs. Suppose the first display buffer is being used to display the current image, and suppose the game was really fast and computed and rendered the next image to ...
0
votes
0answers
208 views
Differences in cg shader code for OpenGL vs. for DirectX?
I have been trying to use an existing library that automatically generates shaders (Hydrax plugin for Ogre3D).
These shaders are used to render water and somewhat involved, but are not extremely ...
8
votes
2answers
505 views
Handle many lights in a scene (with shaders)
I'm curious about how to handle many lights in a scene. Given a very big map in a role playing game, with dungeons (with lights in there) etc. I know about deferred lighting, but that only answers how ...
0
votes
1answer
721 views
How to create modular/replaceable game/engine code interfaces with c++
I've spent some time when I can spare it experimenting with c++ and at the same time learning a bit about game programming. I like most thought I'd start with creating a simple game engine but with ...
5
votes
1answer
392 views
Difference between the terms Material & Effect
I'm making an effect system right now (I think, because it may be a material system... or both!). The effects system follows the common (e.g. COLLADA, DirectX) effect framework abstraction of Effects ...
2
votes
2answers
224 views
Do unused vertices in a 3D object affect performance?
For my game I need to generate a mesh dynamically. Now I'm wondering does it have a noticeable affect in FPS if I allocate more vertices than what I'm actually using or not? and does it matter if I'm ...
0
votes
3answers
2k views
Should I go with OpenGL to see my future in Game Development industry? [duplicate]
Possible Duplicate:
Should I continue studying OpenGL or just switch to DirectX to give me a better chance of landing a job in the game industry?
I tried Google but found quite old ...
0
votes
1answer
168 views
Directx and Open Libraries list? [closed]
I've just been looking for comparissons between open and proprietary frameworks and libraries. More so just to get an idea of what exists than how they compare.
For example:
We have
DirectX ...
2
votes
1answer
253 views
Ogre 3D Visibility Advice
I would like an advice about some real-time rendering optimization.
I'm rendering a BSP level, by only using the mesh, textures, entities, and lightmaps, not using VIS at all.
I'm trying to make my ...
0
votes
3answers
860 views
For learning purposes only, is creating a game engine or using one such as Unity3D or UDK better?
Alright, let me start off by saying this: I've seen multiple threads comparing creating custom game engines to already created game engines such as Unity3D or UDK, but none of the threads I've found ...
-1
votes
1answer
1k views
C#: What graphics library would be best to use? [closed]
I am making my first game with 3D graphics, and I wanted to decide on a graphics library before I do any graphics work. I am using C# VS Express 2010. I have seen suggestions for XNA, Tao, and just ...
4
votes
3answers
3k views
Should I use Game Engines to learn to make 3D games?
HI i am a software engineering student in his second-last year.
I am proficient with C,C++,C# and java programming languages, and being a student of engineering I have studied calculus, vectors etc ...
1
vote
1answer
412 views
A comparison of graphics libraries and their respective programming languages [closed]
A comparison of graphics libraries and their respective programming languages. A.K.A. "Which do I pick? With a twist."
I'm a long time professional programmer who never gave up on programming as a ...
4
votes
2answers
622 views
Ara matrices calculated on the GPU or on the CPU? Would built-in matrix functions be faster than my custom ones?
If I add a math library (for example containing a Matrix class) and use it in my program drawing with OpenGL, will my be work slower than if I used standard OpenGL functions for matrix calculations? ...
29
votes
9answers
3k views
Should I continue studying OpenGL or just switch to DirectX to give me a better chance of landing a job in the game industry?
I've been learning graphics programming for some time now using OpenGL and Linux. I'm pretty familiar with most of the concepts, but I would really like to further my knowledge and eventually pursue a ...
5
votes
1answer
324 views
Why would I support multiple rendering engines simultaneously?
I've seen some games from the early 2000s that had a launcher where you could select the rendering engine you wanted to use: DirectX or OpenGL.
Maybe I haven't looked hard enough, but I haven't seen ...
4
votes
2answers
3k views
Does Unity for PC use Direct3D or OpenGL?
I am a mac developer using Unity and I hardly use a PC. When you build a Unity game for Windows, does it use Direct3D or OpenGL?
P.S. I'm not sure if it's called Direct3D or DirectX
3
votes
2answers
1k views
How does one write to another process's OpenGL/DirectX context?
I want to write a short of chat client that display the messages in-game (OpenGL/DirectX), but I really don't know how to handle this.
It is easy to write my client in my graphic context... but what ...
18
votes
3answers
4k views
For voxel rendering, what is more efficient: pre-made VBO or a geometry shader?
Given a fairly static voxel array, what is more efficient: using the CPU to pre-generate a VBO to render the voxel faces (ignoring more advanced forms of rendering like marching cubes for now) or ...
6
votes
3answers
1k views
Direct3D and OpenGL Matrix representation
As I read in OpenGL matrices are column major. It means that if I create a 16 element array first four elements are the first column in matrix. Is it the same for Direct3D or any transformation's ...
2
votes
1answer
306 views
What is an OpenGL equivalent to ID3DXSprite?
As a Direct3D developer I can use the ID3DXSprite class (in D3DX library) for drawing 2D graphics. What's the best way to implement this functionality in OpenGL?
1
vote
3answers
468 views
What should I use to handle input?
What should I use to handle input? I am wanting to use OpenGL so that my games are cross platform. DirectX provides input libraries, and OpenGL does not. Because my games need to be cross platform, I ...
0
votes
2answers
678 views
Graphics capabilities differences between mobile and desktop/console platforms?
I would like to better understand the difference in capabilities between mobile and desktop/console graphics? What exactly are the limitations of a mobile device? What kind of operations can a ...
5
votes
3answers
1k views
Draw contour around object in Opengl
I need to draw contour around 2d objects in 3d space. I tried drawing lines around object(+points to fill the gap), but due to line width, some part of it(~50%) was covering object. I tried to use ...
1
vote
2answers
256 views
Different types of memories which a graphics card has
I've been googling this around and yet nothing showed up but some articles from middle ages which were talking about Gforce mx and ... . My question is just this: what are the different memories in a ...
3
votes
2answers
931 views
Proper asset management?
I am unable to wrap my mind around designing a good way to manage resources in my game.
For instance, a vertex buffer in DirectX or OpenGL would lead me to believe I should have one central buffer in ...
10
votes
3answers
2k views
Why do pixel shaders not let us read directly from the framebuffer or the depth buffer?
Letting me sample the framebuffer or the depthbuffer in the pixel shader would be an extremely useful feature. Even just being able to know the depth or the color of whatever is behind the current ...
7
votes
4answers
425 views
What types of effects or shaders would you teach in a rendering class? [closed]
I am looking for a list of topics that would be fun to learn and not too complicated to implement with a prototyping tool like FX Composer or Rendermonkey for an intermediate class of real-time ...
6
votes
5answers
813 views
Correct level of abstraction for a 3d rendering component?
I've seen lots of questions around this area but not this exact question so apologies if this is a duplicate.
I'm making a small 3d game. Well to be honest, it's just a little hobby project and ...
5
votes
2answers
946 views
3D primitive rendering library
I am looking for a library which would easily allow me to render shapes (cubes, spheres, lines, circles, etc.) in 3D3 and OpenGL if possible. I want to be able to rapidly design visual debugging tools ...
6
votes
3answers
958 views
Common light map practices
My scene consists of individual meshes. At the moment each mesh has its associated light map texture, I was able to implement the light mapping using these many small textures.
1) Of course, I want ...
