Questions which are specifically related to version 9.0 of DirectX SDK. If your question is not specific to this version of SDK (i.e. it could apply to DirectX 10 and 11 as well), use the 'directx' tag.

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-2
votes
1answer
177 views

How to use D3DXIntersectTri function to find intersected point?

How to calculate direction for D3DXIntersectTri function to find intersected point? And after getting the result in Distance how to get that coordinate(XYZ)?
0
votes
2answers
568 views

Problem reseting device when using render target

How can I reset the device when I am rendering to a surface, and then stretching that surface to the back buffer. If i don't change the render target everything goes well, but when i change the render ...
1
vote
0answers
508 views

tex2dlod and tex2d giving different values [closed]

I've been having trouble with vertex texture fetch for a terrain system I am implementing. I'm using C++/DirectX9. I have already implemented exactly what I want as a prototype in C#/XNA and now ...
0
votes
2answers
287 views

D3DXCreateEffect Performance

Current performance analysis shows that D3DXCreateEffect is called many times with different shaders. Between each call, the D3DCompile DLL is being loaded and unloaded. Is there an easy way to keep ...
-1
votes
1answer
466 views

How to Render Cylinder with built in function D3DXCreateCylinder in Directx9 with Delphi-Xe2 and JEDI? [closed]

I'm new to Directx and i want to render Cylinder using "D3DXCreateCylinder" function. I using Delphi Xe2 and JEDI for DirectX9.
0
votes
1answer
447 views

Making a DX9 game resolution independent

How can I change the resolution and stretch my entire game to the new resolution? I want my game to have a base resolution, and when I change it to stretch to that new resolution. I saw a few similar ...
0
votes
3answers
958 views

Using DirectX9 within Visual Studio 2012 in Windows 8?

Asking the question here simply because my PC is down for the count for a while and wasn't able to stave a curiosity before that happened. I picked up a few books about programming Games in DirectX, ...
0
votes
1answer
144 views

Adding Shader Model 3.0 support to my Direct3D9 app

So far, we've only used pixel shaders because we never needed to do any custom processing at the vertex shader level. However, the 3.0 model shader forces you to define a vertex shader. And that's ...
1
vote
1answer
1k views

How can I render multiple windows with DirectX 9 in C++?

I'm trying to render multiple windows, using DirectX 9 and swap chains, but even though I create 2 windows, I only see the first one that I've created. My RendererDX9 header is this: #include ...
1
vote
1answer
536 views

2D Matrix Transformation (with a Player and Ground)

I have a simple game that I'm trying to do for learning purposes, but Matrices are a bit hard, especially in DirectX. I currently have a tilesystem that renders tiles at the screen and a character ...
5
votes
1answer
2k views

2D Line drawing with Pixel Shaders

Recently I asked a question, what is the fastest way to render 2D lines using DirectX, and one of the answers mentioned this paper on Fast Prefiltered Lines which uses Pixel Shaders to accomplish ...
1
vote
1answer
2k views

DX11 application running on Windows XP using only DX9?

I'm developing an application that utilizes DX11. I know that DX11 is only available on Windows 7 (and Vista with SP). I wonder if there is some way to run the application on Windows XP and use only ...
1
vote
2answers
164 views

In the Direct3D 9 Effect API, how do you find the texture variable linked to a sampler?

In Direct3D 9 effect files you can write a sampler state that specifies a texture variable to use, like Texture2D g_texSkyDome; SamplerState g_samplerSkyDome { Texture = <g_texSkyDome>; ...
3
votes
3answers
2k views

DirectX 9 - model rendering from .obj files issues

Well I can clearly tell that what rendered is close to what I wanted, but there seems to be a few problems. The .obj files contained values like "f", "v", "vt". Image Of Problem: ...
7
votes
3answers
880 views

Isometric smooth fog

I'm working on a simple 2d game with direct3d 9. It's a isometric game with diamond tiles and a staggered map. This is what I have: As you see I have some kind of fog which is acomplished by having ...
0
votes
2answers
487 views

How can I capture every frame in DirectX 9 using a shader

This is actually a follow up to this question How to capture the screen in DirectX 9 to a raw bitmap in memory without using D3DXSaveSurfaceToFile The proponent of the best solution suggested that I ...
1
vote
1answer
176 views

Direct3d - Code structure

I'm learning directx in a master's degree and they taught us to have a GraphicsLayer class which is the one connecting with the direct3d library. That way this class is completly independent from the ...
1
vote
0answers
313 views

DX9 Deferred Rendering, GBuffer displays as clear color only [closed]

I'm trying to implement Catalin Zima's Deferred Renderer in a very lightweight c++ DirectX 9 app (only renders a skydome and a model), at this moment I'm trying to render the gbuffer, but I'm having a ...
1
vote
1answer
226 views

Inter Quake Model IQM render Directx9

I'm trying to render an Inter Quake Model(http://lee.fov120.com/iqm/) in DirectX9 that I exported from blender. I want to display animations which IQM supports and my model format does not. The ...
4
votes
3answers
6k views

How to capture the screen in DirectX 9 to a raw bitmap in memory without using D3DXSaveSurfaceToFile

I know that in OpenGL I can do something like this glReadBuffer( GL_FRONT ); glReadPixels( 0, 0, _width, _height, GL_RGB, GL_UNSIGNED_BYTE, _buffer ); And its pretty fast, I get the raw bitmap in ...
6
votes
1answer
801 views

Partial Shader Signatures HLSL D3D11 C++

I had been debugging a problem I was having in a single shader file with 2 functions in it. I'm using DirectX 11, vs_5_0 and ps_5_0. I have stripped it down to its basic components to understand what ...
1
vote
0answers
239 views

How should VertexBuffers be used with Multiple Monitors in DirectX 9 [closed]

I am currently using DirectX 9 on a machine with two GPUs and three monitors. I am currently trying to draw a triangle on each monitor using vertexbuffers; A directx helloworld with multiple monitors ...
3
votes
3answers
930 views

CreateRenderTarget returns 0x80070057 in big surface resolution

I have created the SLI merged desktop of three 1920x1680 monitors, so the desktop resolution is 5760x1080. There is a 0x80070057 error, while calling CreateRenderTarget to create the RT_Surface: ...
2
votes
3answers
966 views

Rain effect using DirectX 9 capabilities

Is it possible to achieve something similar to nVidia's rain demo using only shader model 3.0 capabilities? If yes, could you point out a few documents/web resources that are suitable candidates and ...
5
votes
1answer
1k views

Rendering a Sprite with an Effect… how?

gettings tuck doing some 3d Rendering and I think you guys may have a lot more knowledge in it. I am tasked with basically rendering a texture onto a screen, preparing the way to apply graphical ...
1
vote
2answers
459 views

Reducing the level of detail of a mesh

I am importing an extremely detailed mesh (provided by a client) and it consists of something like 16 million triangles. For rendering performance I've been using the ID3DXMesh interface's Optimize ...
6
votes
1answer
567 views

What elements of D3DPRESENT_PARAMETERS MUST be set?

DIRECTX9... For ages, I've shipped games that only half-fill out the D3DPRESENT_PARAMETERS structure, and now I'm wondering if this is buggy. The items I'm worried about, and never set are: ...
0
votes
1answer
216 views

How can I keep straight alpha during rendering particles?

Rencently,I was trying to save textures of 3D particles so that I can reuse the in 2D rendering.Now I had some problem with alpha channel.Some artist told me I that my textures should have ...
2
votes
1answer
999 views

Omni-directional shadow mapping

What is a good/the best way to fill a cube map with depth values that are going to give me the least amount of trouble with floating point imprecision? To get up and running I'm just writing the raw ...
0
votes
2answers
751 views

DirectX 9 light class

At the moment I am trying to create a tech demo in directX 9. I have a good understanding of basic lighting but, in my game/demo, I want to be able to create and light a scene like the following: ...
6
votes
1answer
557 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 ...
1
vote
1answer
2k views

Convert a .fbx to a .x model

I'm trying to convert a .fbx model to a .x for use in my DirectX 9 project. Does anyone know of any software to allow me to do this? Been googling for a few days and not really found anything that ...
-2
votes
2answers
702 views

Which is the best DirectX 9 SDK version? [closed]

I've seen a lot of Microsoft's DirectX releases through these years. Actually I'm working with version 9 right now and I read in a book that the October 2006 is one of the best version 9's releases. ...
0
votes
1answer
407 views

How do I make camera move at same speed when rotating and moving forward

I made a camera in DX9. To move forward I press the Up arrow. To rotate on the Y axis I use the mouse. When I perform these movements on their own the camera moves at the speed I want. However, if I ...
2
votes
1answer
658 views

How can I get the front buffer into a texture on the GPU? [closed]

I'm attempting to write a small screen capture utility that writes captured video to disk. First, I get the front buffer surface. I've written a shader that takes this surface and through render to ...
1
vote
1answer
203 views

How to achieve best performance in DirectX 9.0 while rendering on multiple monitors?

I have read this article, and I am making use of some pixel shaders to achieve some effects. At most four shader effects can be applied at same time. What are the best practices to achieve best ...
1
vote
1answer
403 views

Parallel rendering in DirectX 9 in WPF application

I want to know if it is possible to have parallel rendering in DirectX 9.0. I am working on a WPF application which uses DirectX 9.0 for rendering. To make my application more efficient I want to have ...
9
votes
3answers
2k views

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 ...
1
vote
3answers
382 views

How to remotely debug a D3D9 application

I've got a D3D9 application, which works fine on my machine. But when I send it to a friend, his machine won't render any of the 3D content. I already changed the build to enable all error-code ...
0
votes
1answer
112 views

Calculating other objects based on the transform of another

What I want to do is create my graphics to be independent of the game framework. So basically the graphics won't know anything until it is told where things are. so the thought was that every ...
1
vote
1answer
219 views

How can I set the world matrix from an array of floats in D3D9?

I have objects that hold their own transform matrix (calculated every frame by the physics system) held in a linear array of floats as follows: [m0, m1, m2, m3] [m4, m5, m6, m7] [m8, m9, m10, ...
1
vote
2answers
816 views

DirectX Flicker

I'm using DirectX 9 via SlimDX (C#). My screen flickers a lot during rendering. I dug a little deeper and see that the surface is being cleared early. Here's an example: ...
1
vote
1answer
199 views

Present fails randomly on mixed C++ Direct3D9 app

I have a mixed .NET application (managed and unmanaged code bridged by C++/CLI wrappers) which uses unmanaged Direct3D9 9.0c to do rendering inside a control which is wrapped inside a C++/CLI class ...
8
votes
3answers
2k views

What is a better abstraction layer for D3D9 and OpenGL vertex data management?

My rendering code has always been OpenGL. I now need to support a platform that does not have OpenGL, so I have to add an abstraction layer that wraps OpenGL and Direct3D 9. I will support Direct3D 11 ...
1
vote
2answers
763 views

D3D9 Alpha Blending on the surfaces

I have a surface (OffScreenPlain or RenderTarget with D3DFMT_A8R8G8B8) which I copy pixels (ARGB) to, from a third party function. Before pixel copying, Bits are accessed by LockRect. This surface is ...
1
vote
1answer
176 views

Why would anti-aliasing work for the debug runtime but not the retail runtime?

I'm experimenting with setting various graphical settings in my Direct3D9 application, and I'm currently facing a curious problem with anti-aliasing. When running under the debug runtime, AA works as ...
1
vote
1answer
834 views

Drawing lines in 3D space

When attempting to draw a line in 3D space with D3DPT_LINELIST, then Direct3D gives me an error about an invalid vertex declaration, saying that it cannot be converted to an FVF. I am using the same ...
8
votes
1answer
188 views

Implementing invisible bones

I suddenly have the feeling that I have absolutely no idea how to implement invisible objects/bones. Right now, I use hardware instancing to store the world matrix of every bone in a vertex buffer, ...
1
vote
2answers
213 views

Direct3D9 application won't write to depth buffer

I've got an application written in D3D9 which will not write any values to the depth buffer, resulting in incorrect values for the depth test. Things I've checked so far: D3DRS_ZENABLE, set to TRUE ...
1
vote
3answers
436 views

Constant size geometries

How can I display objects in a 3D perspective projection that look like as if their size does not change, despite of the camera's position? I am using DirectX 9.0. I know of PositionTransformed ...