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.

learn more… | top users | synonyms (1)

2
votes
1answer
1k views

Direct3D11 feature level

If I set the directx feature level to D3D_FEATURE_LEVEL_9_3 but I have a graphics card which supports D3D_FEATURE_LEVEL_11_0 does that prevent directx11 features from working even though my graphics ...
2
votes
0answers
622 views

Problem of tearing in Slimdx and DirectShow video [closed]

I have written a video player using SlimDX and DirectShow which is displaying the video on a SlimDX texture. I am extracting the video frames using the ISampleGrabberCB interface from DirectShow and ...
6
votes
3answers
2k 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
347 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?
0
votes
1answer
174 views

Under what circumstances will a PIX 'Render' be different to the actual 'render'?

I am trying to implement dual-pass alpha sorting using Ogre material scripts, as part of my debugging attempts I want to compare two PIX captures, but when I attempt to debug a pixel in PIX, ...
3
votes
2answers
3k views

How can I draw multiple lines connected via “nodes” with SlimDX?

I currently read out XML data with the following scheme: Position x,y,z I try to add one new Vertex for each position node and add it to a Vertex array. Then I try to render this list of vertices so ...
4
votes
2answers
6k views

Mapping a Vertex Buffer in DirectX11

I have a VertexBuffer that I am remapping on a per frame base for a bunch of quads that are constantly updated, sharing the same material\index buffer but have different width/heights. However, ...
1
vote
3answers
618 views

What should I use to handle input? [closed]

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 ...
-2
votes
1answer
315 views

Stop rendering to lessen amount of resources used?

Also posted on StackOverflow, hope this isn't a problem. Recently I've been writing a bot for a game which uses a DirectX backend for its rendering. I have managed to 'hack' the game into allowing ...
3
votes
2answers
965 views

implementing multi pass rendering in a game engine

I have done multi pass rendering before and understand how it works. I did a simple example which rendered a basic scene with shadows. This was all done in one file. Now I am trying to figure out is ...
5
votes
1answer
2k views

Render to Texture2DArray slices in DirectX11?

I would like to set a slice of a Texture2DArray as a render target in D3D/DirectX11. It's not clear how to do this. What I'm looking for is the DirectX equivalent of glFramebufferTextureLayer(), ...
1
vote
0answers
745 views

Loading a sub resource for a texture array [closed]

I've been trying to load textures into a texture array, but I've hit a wall with my knowledge of subresources. Any time I try loading the data, I just get junk as output. The code below is only set ...
0
votes
2answers
875 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 ...
2
votes
1answer
689 views

How can I convert .X files from text to binary form?

Is there a tool for Linux (preferably a command-line tool) that can convert from the .x text format to the binary format? I wish to use this format with Irrlicht but the text format is loading very ...
4
votes
2answers
707 views

Material vs Material Pass

I am trying to figure out the difference between a "Material" and a "Material Pass" (in theory). Is it basically that a Material will have multiple "Material Pass"'es, along with a name. Then the ...
1
vote
0answers
291 views

GetRasterStatus usage in direct3d [closed]

I am interested if anyone has had used GetrasterStatus in direct3d application to control application vsync behaviour in high precision timing? What set of techniques are to be implemented to do the ...
3
votes
3answers
3k views

Non blocking Vsync in direct3d

I have direct3d application with a direct3d PRESENTATION_INTERVAL_ONE implementation. Pitty, its blocking and eating my CPU waiting for a Present. I ended up searching for Raster scan solutions, ...
2
votes
1answer
6k views

Loading a Texture2D Array in DirectX11

How does one create a Texture2D Array in DirectX11? The texture I am trying to create is not multisampled, and I want only one mip level. I can't find a working example of a Texture2D Array. I have a ...
4
votes
2answers
986 views

Real time reflections

I just had a quick look at the new Crysis 2 DX11 update, and was quite surprised by some of the new features, especially the real time reflections on moving models. From what I could gather, there are ...
7
votes
3answers
4k 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
187 views

Hidden operations of the Direct3D pipeline

I'm curious- what operations are there in Direct3D that aren't controlled directly through shader, or directly to do with shader manipulation- i.e., that occur behind the scenes. So far, I've got ...
0
votes
1answer
152 views

Outputting wrong colours from pixel shader in Direct3D

The output from the pixel shader in Direct3D is four floats, normalized 0-1 for each channel (RGBA). But what happens if these floats haven't been normalized correctly and are above 1?
3
votes
2answers
544 views

loading 3d model data into buffers

I am using assimp to load 3d model data. I have noticed that each loaded model is made up of different meshes. I was wondering should each mesh have it's own vertex/index buffer or should there just ...
2
votes
1answer
166 views

DirectX the same across platforms?

Various versions of DirectX are available on both Windows and Xbox. Are the libraries the same on both platforms? Obviosly I'm talking about the interfaces — such as the ones for working with ...
4
votes
3answers
2k views

Loading and using an HLSL shader?

I've been looking everywhere and all I can find are tutorials on writing the shaders. None of them showed me how to incorporate them into my scene. So essentially: Given an hlsl shader, if I were to ...
6
votes
3answers
4k views

Tool for editing .X

This is probably the zillionth place where I try to get help in this, so please do bear with me, if I missed something with the local search engine - just need a short answer: a short suggestion. I am ...
1
vote
2answers
283 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
1k 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 ...
-1
votes
2answers
528 views

How to do gradient transitions using slimdx?

I am making an image slide show using slimdx and c#. Till now I have done transitions using the matrix transformation but now I am trying to make transitions using some gray scale background image. ...
3
votes
1answer
1k views

WM_PAINT and Direct3D

I've seen people who've written in code where the graphics of a scene are rendered in response to WM_PAINT. I only ever rendered the scene once all Windows messages were done translating, and then ...
3
votes
2answers
410 views

Render only some of graphics?

In XNA I am building my own textbox, and listbox. For the textbox, I want it to render all text it can, and then cut off at the end of the textbox. But I don't want it to cut whole letters. I want it ...
7
votes
5answers
3k views

Best pathfinding algorithm for a tower-defense game? [duplicate]

What do you suggest would be the best algorithm for a tower-defense game? It's a 2D based tile game, where there is walls and towers blocking the way, between spawnpoints and their destination points. ...
1
vote
1answer
301 views

How do I display same “proportional” text size on different resolutions?

I draw some text on screen using ID3DXFont::DrawText. This text should be displayed the same regardless of screen resolution. For example, if screen resolution is low, text wrapped and when it is ...
1
vote
1answer
1k views

downsampling algorithm

what are the steps to perform downsampling on a texture ? I've got as far as rendering the scene to a render target, but I'm not sure as to how to then render that to a smaller texture in order to ...
8
votes
4answers
2k views

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 ...
4
votes
2answers
3k views

How Often do you change Vertex/Index/etc Buffers?

So im still learning but I think i've got a grasp of most things DX11 (Well....beginner things) And I REALLY do apologize for all the questions.....but I'd rather understand EVERYTHING before I move ...
11
votes
4answers
1k views

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 : ...
0
votes
1answer
2k views

Fullscreen + Vsync = Stuttering

In my research for a stuttering problem in my game engine, I think, I have found the problem, but don't have any idea why this is happening, that's why I ask you if you have an idea ! The situation : ...
1
vote
1answer
370 views

Output from vertex shader in D3D9

I've been looking at creating some 2D rendering systems in D3D9, basically because I don't like ID3DXSprite. For the output of the vertex shader, what co-ordinate system does the run-time expect ...
2
votes
2answers
338 views

Initializing Direct X

I've recently starting with Direct X; I've been using Rasertek's tutorials, and Frank Luna's book. One thing thats just out of this world to me is how much effort it is to initialize DX11: the swap ...
5
votes
1answer
757 views

Problem with DirectX scene-graph

I'm trying to implement a basic scene graph in DirectX using C++. I am using a left child-right sibling binary tree to do this. I'm having trouble updating each node's world transformation relative to ...
4
votes
3answers
4k views

Inverting matrix in HLSL

I've got an object in HLSL and I'm using hardware instancing to render multiple copies. But I've come a bit of a cropper when it comes to the vertex normals. Currently I am not using normal mapping ...
1
vote
1answer
412 views

Can I load OGRE's mesh file via direct3d?

I just posted this question over at the the OGRE 3D forums, and I wanted to post it here as well. I'm a newbie here, just found that OGRE is an amazing engine for 3d programming. Using the Entity ...
6
votes
2answers
369 views

Does it make sense to include an index for linelists?

Does it make sense to include an index by using DrawIndexedPrimitives, when using linelists performance wise? I could imagine it would be easy for the GPU to generate such indexes anyway.
3
votes
1answer
160 views

Instancing with empty data, or varying vertex counts?

I am new to game development, having only developed a few games before, in 2D space, but with 3D rendering. I have implemented instancing before, but this is only my 2nd time doing it. I have a ...
3
votes
1answer
216 views

Rudimentary 3D graphics in C++ .NET

I am looking to implement an extremely rudimentary FPS game with extremely rudimentary 3D graphics using C++ .NET and DirectX. I'm not interested in any third party libraries or anything special like ...
13
votes
3answers
4k 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 ...
1
vote
1answer
274 views

HLSL weird matrix behaviour

I have some problems using an int 3x3 matrix as the convolution filter to do edge detection. (I know int matrices are not very meaningful since there is only float on the gpu) Here is the code: ...
8
votes
4answers
500 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
votes
5answers
660 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 ...