DirectX 11 is the primary graphics API for Microsoft platforms including Windows, Xbox One, and Windows phone.

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447 views

Having the same texture data in different ID3D11Texture2D

Sorry if this has been answered elsewhere - I'm rather new to DX. My question concerns conservation of resources - specifically textures in VRAM. I assume that upon returning from a call to ...
2
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1answer
652 views

How do you create a cbuffer or global variable that is gpu modifiable?

I'm implementing tonemapping in a pixel shader, for hdr lighting. The vertex shader outputs vertices with colors. I need to find the max color and save it in a global. However when I try and write ...
1
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1answer
771 views

ERROR #342: DEVICE_SHADER_LINKAGE_SEMANTICNAME_NOT_FOUND

I've stared at this for at least half an hour now and I cannot figure out what directx is complaining about. I know this error normally means you put float3 instead of a float4 or something like ...
0
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1answer
770 views

How to set sprite source coordinates?

I am creating own sprite drawer with DX11 on C++. Works fine but I dont know how to apply source rectangle to texture coordinates of rendering surface(for animation sprite sheets) ...
2
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2answers
1k views

How do I keep a triangle strip between geometry shader invocations?

I'm using a small geometry shader to build a "ribbon" from a set of points. For each point, I create 4 vertices that represent a section of the ribbon: [maxvertexcount(4)] void GS( point GS_Input ...
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4answers
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how does HDR work?

I'm trying to understand what HDR is and how it works. I understand the basic concepts and have an slight idea of how it is implemented with D3D/hlsl. However it's still pretty foggy. Say I'm ...
3
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1answer
2k views

Does the latest DirectX SDK support both Direct3D 9.0c and 11?

1) What is the latest version of DirectX SDK? 2) For my purposes I need DirectX 9.0c SDK and DirectX 11 SDK. Do I need to install these libraries separately or last DirectX SDK package contains both ...
6
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1answer
618 views

How do I get FEATURE_LEVEL_9_3 to work with shaders in Direct3D11?

Currently I'm going through some tutorials and learning DX11 on a DX10 machine (though I just ordered a new DX11 compatible computer) by means of setting the D3D_FEATURE_LEVEL_ setting to 10_0 and ...
0
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2answers
247 views

DX11 - Weird shader behavior with and without branching

I have found problem in my shader code, which I dont´t know how to solve. I want to rewrite this code without "ifs" tmp = evaluate and result is 0 or 1 (nothing else) if (tmp == 1) val = X1; if (tmp ...
4
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1answer
345 views

Does changing a Rasterizer State affect every object (model) on the screen?

Quick easy question. When setting a Rasterizer State (like for example wireframe).....does that affect every object (model) on the screen? For example, let's pretend I have 2 cubes. I use: ...
6
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3answers
7k views

What happened to .fx files in D3D11?

It seems they completely ruined .fx file loading / parsing in D3D11. In D3D9, loading an entire effect file was D3DXCreateEffectFromFile( .. ), and you got a ID3DXEffect9, which had great methods ...
6
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2answers
2k views

What advantages does DirectX 11 have over DirectX 10?

What advantages does DirectX 11 have over DirectX 10? Most of the new features seemed to be for directcompute from what I can tell, and how much more are you limiting your market by if you use DX11 ...
0
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1answer
278 views

Why does setting a geometry shader cause my sprites to vanish?

My application has multiple screens with different tasks. Once I set a geometry shader to the device context for my custom terrain, it works and I get the desired results. But then when I get back to ...
3
votes
1answer
4k views

SV_POSITION in pixel shader

What are the uses for SV_POSITION in the pixel shader? Previously this was the POSITION semantic and it wasn't readable in the pixel shader, but now that it is, what can it be used for? In an SM2 ...
4
votes
2answers
191 views

How can I simulate multiple depth channels?

Here's what I'd like to achieve: Rendering a first pass of objects in my scene, using standard depth comparison Rendering another pass of objects in the same scene, but with the following rules: A ...
0
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4answers
1k views

Access violation in DirectX OMSetRenderTargets [closed]

I receive the following error when running the Triangle sample application for DirectX 11 in D3D_FEATURE_LEVEL_9_1: Unhandled exception at 0x527DAE81 (d3d11_1sdklayers.dll) in ...
2
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1answer
1k views

Question about mipmaps + anisotropic filtering

I'm a bit confused here and maybe someone can explain this to me. I created a simple test texture for my terrain which is nothing more than a solid green color with a black grid overlayed on top of ...
0
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1answer
135 views

Can I animate render targets or the swap chain?

I want to animate some synthetic video bits to fullscreen w/o tearing. Can I set up D3D 9/10/11 in exclusive mode, and have it present a series of buffers that I'm writing to? I know how to copy ...
0
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1answer
1k views

Render full-screen gradient or texture

What's the simplest way to fill the background of the screen with a gradient or a texture in Direct3D 10/11? I'm building a Windows 8 metro app in which the camera never moves and I render some ...
4
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1answer
2k views

What do I need to reload after a device reset?

Is there a complete list of resources that need to be reloaded after a device reset? I want to make sure I'm not missing anything. Also, should I reload them from disk each time, or do I want to make ...
3
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1answer
3k views

D3D11 Multiple Render Targets

I wanted to try rendering to multiple render targets as a first step to deferred shading, but I'm getting somewhat peculiar behavior where the contents of all render targets are the same as the first ...
2
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0answers
811 views

Geometry Shader and Stream Output with Directx11

I am having trouble trying to send verticies generated in the Geometry Shader to Stream Output. What I am trying to accomplish is to generate verticies from the Geometry Shader and store them to a ...
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1answer
428 views

What are the tessellation factors Direct3D11?

I don't quite understand the documentation but if I was to tessellate a mesh using 3 control points in Direct3D11 with the "tri" domain am I right in thinking that SV_TessFactor is how many times to ...
4
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1answer
3k views

What are the valid DepthBuffer Texture formats in DirectX 11? And which are also valid for a staging resource?

I am trying to read the contents of the depth buffer into main memory so that my CPU side code can do Some Stuff™ with it. I am attempting to do this by creating a staging resource which can be read ...
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2answers
1k views

Why does calling CreateDXGIFactory prevent my program from exiting?

I'm using CreateDXGIFactory to get the graphics adapters and display modes. When I call it, it works fine and I get all the data. However, when I exit my program, the main Win32 thread exits, but ...
0
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1answer
977 views

E_FAIL: An undetermined error occurred (-2147467259) when loading a cube texture

I'm trying to implement a skybox into my engine, and I'm having some trouble loading the image as a cube map. Everything works (but it doesn't look right) if I don't load using an ...
0
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1answer
5k views

Where have the Direct3D 11 tutorials on MSDN have gone?

I've had this tutorial bookmarked for ages. I've just decided to give DX11 a real go, so I've gone through that tutorial, but I can't find where the next one in the series is! There are no links from ...
5
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1answer
1k views

Memory allocation strategy for the vertex buffers (DirectX 10/11)

I'm writing a CAD system. I have a 3D scene and there are many different objects (walls, doors, windows and so on). The user can add or delete objects. The question is: How do I keep track of all the ...
4
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1answer
746 views

Per-vertex position/normal and per-index texture coordinate

In my game, I have a mesh with a vertex buffer and index buffer up and running. The vertex buffer stores a Vector3 for the position and a Vector2 for the UV coordinate for each vertex. The index ...
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3answers
4k 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 ...
5
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2answers
6k views

How can I convert an OBJ model into arrays of vertices and indices?

I'm writing a simple model loader just to learn how models are loaded. I wrote a program to convert .OBJ files in a custom format. (It's virtually exactly the same as .OBJ, I wrote it once again just ...
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0answers
379 views

D3DX11CreateShaderResourceViewFromFile returns E_FAIL [closed]

When trying to create a texture, my call to D3DX11CreateShaderResourceViewFromFile keeps returning E_FAIL. To me that's about as generic as it gets, and I can't figure the problem out. The code looks ...
2
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1answer
2k views

Loading textures with SharpDX in Metro

I have converted my C# game from OpenTK (OpenGL) to SharpDX (DirectX) and have it up and running from Visual Studio 2010. I also have it up and running from Visual Studio 11 in Metro, in the Windows 8 ...
2
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1answer
300 views

Why does my game not update unless I'm moving the mouse?

I'm pretty confused by what's happening. Now that I've finally put something moving on my screen, I notice it doesn't update unless I move the mouse, or press a key, or trigger other events. Using ...
5
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1answer
3k views

Managing Shaders and Objects in DirectX 11

The title explains my two biggest logical problems with developing a game. It's something I sit up at night thinking about, and that is "What is the most effective way to manage shaders" and "What is ...
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1answer
138 views

Drawback of using multiple bind flags

As far as I understand Direct3D 11 I have to specify certain BindFlags in order to use a resource in a specific stage of the pipeline. From my experience some combinations are more common like ...
5
votes
2answers
905 views

How to deal with large depth buffer values due to extreme distances

Alright, this is semi-related to my last question here So I've got an really big coordinate system and need to handle rendering large astral bodies from extreme distances. My current approach ...
2
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2answers
1k views

Is the output from D3DCompile specific to one GPU, or not?

In Direct3D 11 there is a two-stage shader compilation process; you first pass the HLSL source code into D3DCompile, which outputs a "blob" of bytecode. You then take this blob and call ...
3
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1answer
2k views

What is the AlphaToCoverage blend state useful for?

Alright, just finished most of my early UI stuff and I wanted the windows to have some transparency. So I expanded my application to initialize and bind blend states so that my UI shader could ...
1
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1answer
719 views

Determine the stride of a DirectX Texture2D line?

Is there a way to determine, or preferably calculate/predict, the the stride of a line of a DirectX 11 Texture2D resource when using SharpDX? (E.g. Can we say the stride of a line is always a power ...
3
votes
1answer
3k views

Why can't I write to my render targets?

Alright, been working on setting up my first deferred rendering attempt using a light prepass technique in Direct3D 11. Anywho, I've been having problems understanding and using render targets. Never ...
6
votes
3answers
2k views

Which of these DirectX11 calls actually sends data to the GPU?

I'm trying to learn graphics programming and DirectX11. I'm trying to learn how to minimize CPU-GPU transfer and graphics programming in general. I have a question that I have been unable to answer ...
4
votes
1answer
1k views

How to fix odd artifacts at the edges of textures in DirectX 11?

In my DirectX 11 project, when I have textures they have odd artifacts at the edges. I've seen it before and searched online, but I can't find any DirectX examples that I can get to work. You can ...
1
vote
3answers
244 views

Extracting blend values from uint32 not working as expected

I have the following shader configuration code : uint gBlendValue = 0xffffff00; Terrain.Effect.GetVariableByName("gBlendValue").AsScalar().Set(gBlendValue); And I have the following shader code : ...
4
votes
2answers
3k views

How can I draw dashed or dotted lines with a pixel shader?

I am trying to draw the 2D graphics (like line, polyline, polygon etc.) using Direct3D for drawing I am using LINE_LIST. Now I want to make the lines thicker and apply patterns to the line as ...
6
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3answers
2k views

What features does D3D have that OpenGL does not (and vice versa)?

Are there any feature comparisons on Direct3D 11 and the newest OpenGL versions? Well, simply put, Direct3D 11 introduced three main features (taken from Wikipedia): Tessellation Multithreaded ...
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1answer
2k views

Why can I not map a dynamic texture in D3D?

I am trying to map a Texture2D resource in DirectX11 via SharpDX. The resource is declared as a ShaderResource, with Dynamic usage and the 'Write' CPU flag specified. My call however fails with a ...
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1answer
454 views

Marshalling C# Structs into DX11 cbuffers

I'm having some issues with the packing of my structure in C# and passing them through to cbuffers I have registered in HLSL. When I pack my struct in one manner the information seems to be able to ...
1
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1answer
1k views

Why are my scene's depth values not being written to my DepthStencilView?

I'm rendering to a depth map in order to use it as a shader resource view, but when I sample the depth map in my shader, the red component has a value of 1 while all other channels have a value of 0. ...
2
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1answer
489 views

Hemicube algorithm d3d9 or d3d11, float valued colors

The hemicube algorithm renders the scene to 5 sides of a half-cube, from the perspective of each polygon. Assume you place the hemicube around me and render to the 5 sides. The idea is, we can see ...