DirectX is a set of multimedia APIs from Microsoft aimed primarily at game developers. Popular APIs within the DirectX collection include Direct3D, XInput, and XAudio.

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How do I create particles that react to the player and enemies?

I'm currently making a game with my own game engine which I've written in C++ and I'm using the most recent directx SDK. The game is a top down space shooter (with a pretty interesting twist) and ...
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9answers
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Should I continue studying OpenGL or just switch to DirectX to give me a better chance of landing a job in the game industry? [closed]

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 ...
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4answers
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game story event programming

I have developed a game engine in c/c++ and DirectX. I have a tile engine for the maps, animated player/npc sprites, talking to the npc, menus, and level changing but there is no game, it just feels ...
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7answers
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How to get PS3/Xbox 360 experience without having access to Dev kits?

I am a budding game programmer trying to get into the industry programming for PS3, Xbox 360. The main problem I see is the need to demonstrate my skills to a potential employer, but without access ...
21
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3answers
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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 ...
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3answers
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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?
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12answers
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3D theory before graphics APIs? [closed]

I'm a software engineer and I'm hoping to move my career towards game development. I'm reading a book right now on 2D using C++/DirectX. When I get into 3D I know I want to do it correctly. For ...
16
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2answers
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How to deal with D3DX .dll hell?

There's a large number of versions of the D3DX dll, from each SDK update, each version having a unique name (list of D3DX dll names). All-too-often, people have versions missing. So even though they ...
16
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2answers
458 views

Coding for a really, really high-resolution display array

I've been tasked with building a real time "full screen" demo to run on a 5x2 array of 60+ inch LED TVs: or, in other words, a 20 megapixel display. We've got a machine built that can run a single ...
15
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1answer
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The practical cost of swapping effects

I use XNA for my projects and on those forums I sometimes see references to the fact that swapping an effect for a mesh has a relatively high cost, which surprises me as I thought to swap an effect ...
14
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7answers
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For 2D games, is there any reason NOT to use a 3D API like Direct3D or OpenGL?

I've been out of hobby Game Development for quite a while now. Back when I did it, most people used Direct Draw to create 2D games. By the time I stopped people were saying OpenGL or Direct3D with ...
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6answers
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Modern Shader Book?

I'm interested in learning about Shaders: What are they, when/for what would I use them, and how to use them. (Specifically I'm interested in Water and Bloom effects, but I know close to 0 about ...
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2answers
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Is it possible to construct a cube with fewer than 24 vertices

I have a cube-based world like Minecraft and I'm wondering if there's a way to construct a cube with fewer than 24 vertices so I can reduce memory usage. It doesn't seem possible to me for 2 reasons: ...
13
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5answers
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Should I learn Direct3D 9, 10 or 11?

I'm just starting to get into 3D programming with Direct3D. What version of D3D should I pick up? 11 looks pretty neat, but 9 and 10 still seems to be pretty present. Given the current state of the ...
12
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3answers
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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 ...
12
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3answers
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Fastest way to render lines with AA, varying thickness in DirectX

So I'm doing some DirectX development, using SharpDX under .NET to be exact (but DirectX/C++ API solutions are applicable). I'm looking for the fastest way to render lines in an orthogonal projection ...
12
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2answers
465 views

Best practice for setting Effect parameters in XNA

I want to ask if there is a best practice for setting Effect parameters in XNA. Or in other words, what exactly happens when I call pass.Apply(). I can imagine multiple scenarios: Each time Apply is ...
12
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2answers
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How do I query available video memory using DirectX?

How do you query the amount of VRAM available when using DirectX?
12
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1answer
306 views

Accounting for waves when doing planar reflections

I've been studying Nvidia's examples from the SDK, in particular the Island11 project and I've found something curious about a piece of HLSL code which corrects the reflections up and down depending ...
11
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8answers
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Getting Started with 2d Game Dev (C++): DirectX or OpenGL? [closed]

So, i'm a student looking to get my foot in the door of game development and im looking to do something 2D, maybe a tetris/space invaders/something-with-a-little-mouse-interaction clone. I pointed ...
11
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6answers
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Does anyone write games in Delphi? [closed]

I am a very seasoned Delphi developer (over 12 years of experience not counting my Turbo Pascal experience) and was wondering does anyone write games in Delphi? I have seen DirectX API wrappers in ...
11
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4answers
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How does an HLSL shader actually end up affecting the render output?

I understand the syntax of HLSL, for example let's pretend I have this as my HLSL: struct VOut { float4 position : SV_POSITION; float4 color : COLOR; }; VOut VShader(float4 position : ...
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6answers
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Visual Studio 2012 and Game Development [closed]

Alright, I think it's a simple question, but I got difficulties to find some answers around. I already read that XNA wouldn't be in Visual Studio 2012. I recently learned to use XNA, but since I ...
10
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3answers
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How many active shaders at one frame in the game (should I typically use)? 5? Or more like 100?

I have a question: how many shaders are usually active at the same time in one scene in modern games? I mean: I know that multiple shaders are being used (switching between them in each frame). And ...
10
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1answer
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Information about rendering, batches, the graphical card, performance etc. + XNA?

I know the title is a bit vague but it's hard to describe what I'm really looking for, but here goes. When it comes to CPU rendering, performance is mostly easy to estimate and straightforward, but ...
10
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5answers
660 views

API agnostic bridges (ie. OpenGL/D3D/Whatever). Do you use them, how you make them. Pro's and Con's

You are making a 3d engine. You want best of multiplatform worlds. Suddenly you realize that if you want to use Direct3D on Windows machines and OpenGL on OSX/Linux, you'll have to sacrifice supported ...
10
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1answer
300 views

Rendering only a part of the screen in high detail

If graphics are rendered for a large viewing angle (e.g. a very large TV or a VR headset), the viewer can't actually focus on the entire image, just a part of it. (Actually, this is the case for ...
10
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2answers
590 views

Managing graphic state and components?

I often tend to do a lot of premature optimazation when dealing with graphics. There are a few principles I always try to follow: Keep the number of D3D components to a minimum. (Render states, ...
9
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4answers
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Avoid if statements in DirectX 10 shaders?

I have heard that if statements should be avoid in shaders, because both parts of the statements will be execute, and than the wrong will be dropped (which harms the performance). It's still a ...
9
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3answers
637 views

Is there any advantage in using DX10/11 for a 2D game?

I'm not entirely familiar with the feature set introduced by DX10/11 class hardware. I'm vaguely familiar with the new stages added to the programmable graphics pipeline, such as the geometry shader, ...
9
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2answers
734 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 ...
9
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3answers
762 views

How can I create a glitter effect?

I am trying to create a glittering effect for my realtime shader but I don't know how. Here is one example, and another example. What technique can I use to implement this?
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3answers
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Pixel-perfect rendering to a rendertarget with a fullscreen quad

I have some trouble rendering a bunch of values to a rendertarget. The values never end up in the exact range I want them to. Basically I use a fullscreen quad and a pixel shader to render to my ...
8
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5answers
657 views

Do you think it's Possible to go from C++ Straight to 3D (skipping 2D)

Do you think it's possible to go straight from Experienced C++ programming (5 or so years) straight into learning DirectX 3d? I mean....i'd be starting with the basics, im more interested in setting ...
8
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3answers
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Does Windows 8 still support DirectX 9?

Is Windows 8 supporting DirectX 9? Because I was looking through some samples written in C++ and DirectX 9 made for Windows 8. It wasn't that, like I know it ( look here ...
8
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3answers
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Moving from DirectX 10 to DirectX 11

I've done a reasonable number of small hobby projects using DirectX 9 but it's time to move to DirectX 11 now. I have Frank Luna'a book on 3D programming using DirectX 10 but nothing on DirectX 11. I ...
8
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1answer
295 views

Curious Transparent Holes Render Artifact

So I'm trying to implement "smooth" terrain in my block engine by giving each surface block a heightmap. Basically, what I do to generate these "heightmaps" for each block is I generate the heights ...
8
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3answers
638 views

Correct method for choosing the user's video cards?

My game uses DirectX 10, and I'm having a problem where users are reporting that my game isn't picking up on their graphics card. Instead it prefers to run on their integrated Intel card, ruining ...
8
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3answers
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Very slow direct3D texture sampling

So I'm writing a small game using Direct3D 9 and I'm using multitexturing for the terrain. All I'm doing is sampling 3 textures and a blend map and getting the overall color from the three textures ...
8
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6answers
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Good example of a multi-pass effect?

In XNA (and Direct3D in general AFAIK), rather than creating individual vertex and fragment shaders, you bundle potentially many related shaders into 'Effects'. When you come to use an effect you ...
8
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1answer
736 views

How can I implement a renderer that can draw many kinds of primitives?

This is somewhat linked to a question I previously asked concerning the drawing of indexed primitives. My problem was that I was only drawing one cube when I wanted to draw many. I was told that the ...
8
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4answers
486 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 ...
8
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4answers
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In a 2d tile based game, what is a good method for scrolling?

I am using Direct3D with the D3DXSPRITE wrapper to draw the tiles to the screen. I have a tile class which contains members such as collision and tile type, then i have an array of tiles e.g. Tile ...
8
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1answer
451 views

How are advanced graphics effects implemented?

I'm curious how 3D effects like spells in Warcraft or Torchlight are implemented graphically. I just finished a book on Direct3D and feel pretty comfortable with it and 3D graphics in general, but I ...
8
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4answers
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Any dirty/cheap, lightweight 3d engine, beginner friendly out there?

I got 2 questions, the 2nd is more some kind of opinion question. 1st question: Everybody heard of panda3d, OGRE and IrrLicht: they are great engines, with a lot of features. With OGRE you can do ...
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3answers
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Display a Message Box over a Full Screen DirectX application

In our custom assertion handler, I'd like to display a message box asking to see whether or not this failure can be ignored. However, when our DirectX game is full screen, I can't get the MessageBox ...
8
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1answer
376 views

Picture rendered from above and below using an Orthographic camera do not match

I'm using an orthographic camera to render slices of a model (in order to voxelize it). I render each slice both from above and below in order to determine what is inside each slice. The model I ...
8
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1answer
282 views

DirectX error with older XP systems

I am a blind programmer, working on an audio game for the blind. I am using SlimDX, and it has been tested on dozens of systems from XP to Win 8.1. My code works on most systems just fine, but I ...
8
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1answer
567 views

2D Water top surface profile

I am trying to create the effect of the water surface thickness with a vertex-fragment shader. I am in a 3D game environment but It's a scroll view so a "2D" view. Here is a good tutorial of creating ...
7
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4answers
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What are the current books for DirectX (w/ focus on 3D)?

For OpenGL, the OpenGL SuperBible 5th edition was just released only a few months ago, and is considered a fantastic, highly rated book for not only learning OpenGL 3 (Part 1 of the book), but it also ...