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
0answers
155 views

How can I load an image into the back buffer? [closed]

How can I load and display an Image?... I have tried something but it didnt.. worked.. this is what I've tried.. File : StrikeOps_main.cpp .. void : render_frame : Intro::DisplayIntro(d3ddev, ...
0
votes
1answer
219 views

How do I handle window resizing in SlimDX?

I'm considering the use of SlimDX in a managed Windows Forms Application. Available with DirectX is DXUT. I use DXUT to handle events such as window resizing and 'lost devices.' How well does SlimDX ...
1
vote
0answers
91 views

Why am I getting the wrong color with alpha blend enabled? [closed]

I can't understand the result about drawing a line. I've set source and destination blending to D3DBLEND_SRCCOLOR, but I get a black starting color from my source. What's wrong? ...
0
votes
2answers
208 views

How to draw multiple shapes in one draw call?

I have a misunderstanding about vertex buffers in DirectX. I'm trying to draw infinite vertices that they may represent a line or a circle or a rectangle in a single draw call. I can bind them all ...
4
votes
1answer
425 views

Radiosity: Integrating Hemicubes

I'm working on a radiosity processor in DirectX 9. I have efficiently rendered hemicubes from the perspective of texels within a lightmap. Now, as I try to integrate the hemicubes (to sum the incident ...
0
votes
1answer
620 views

Converting Projected Vertex Positions to Normalized Device Coordinates

I'm using directx 9 and vertex shaders to rasterize triangles...I have vertex shader input structs like this: struct VS_INPUT_Quad { float4 Position : POSITION; float2 UV : TEXCOORD0; }; and ...
1
vote
1answer
127 views

SetFloat() in HLSL shader (effect) has no effect - variables stay at 0

I have a problem wherein I'm trying to set two simple float variables in my shader. I have a dozen other shaders in this project where it works fine, but for some reason, I've got a bug in this one ...
4
votes
2answers
678 views

Is Batching Geometry Every Frame Always Slower Than Individual Draw Calls

I'm currently have an application that has ~10k draw calls. I implemented a batching scheme where I group all objects that share material, vertex format, etc and pre-transform them by their world ...
1
vote
1answer
83 views

WDDM Managing Memory in D3DPOOL_DEFAULT

In this question I saw that I was running out of memory in D3DPOOL_DEFAULT in DX9EX. After changing my usage from D3DUSAGE_DYNAMIC to 0 (static usage), everything runs wonderfully with no DX9 error. ...
2
votes
2answers
760 views

Implementing Geometry Instancing in DirectX

I have a project that I'm doing in Managed DirectX (DX9) where I want to render lots of grass. My current method (many draw calls) is slow, but I've heard Geometry Instancing can fix that. I know ...
2
votes
1answer
375 views

How should I prepare for migration from D3D9 to D3D10 or D3D11?

I'm considering a Direct3D9 texture streaming solution, but my company will eventually be going to D3D11 in the future. I wanted to make my solution as forward compatible as possible, so I was hoping ...
1
vote
1answer
96 views

Is there a way to limit the size of the D3DPOOL_MANAGED pool?

I have over 2GB of textures that I need to put in D3D9's D3DPOOL_MANAGED pool. D3D9 charges the system copy of anything in the D3DPOOL_MANAGED to my process space. I'm working on a 32-bit system so I ...
0
votes
1answer
89 views

Why would I lose the D3D device during an HLSL unroll?

I have a pixel shader that downsamples a texture from one size to another. The downsample shader uses a nested 'for' loop to traverse the uv coordinates. When the for loop executes more than four ...
1
vote
1answer
72 views

Can I Use SetLOD with D3D9Ex?

I need to limit the mipmap level loaded onto the device for certain textures, but I'm using a D3D9Ex-based engine, so I can only use D3DPOOL_DEFAULT, not D3DPOOL_MANAGED. Microsoft's documentation ...
4
votes
2answers
500 views

Why am I running out of memory in D3DPOOL_DEFAULT?

When trying to using my company's D3D9 renderer and allocating everything in D3DPOOL_MANAGED I would run out of memory in the 32-bit process space. I tried using our D3D9Ex renderer and allocating in ...
6
votes
2answers
1k views

Fixed Function vs Programmable Pipeline performance with many batches

In OpenGL 2.0 I can easily make 10,000 draw calls per frame (with state changes in between each call). However, if i try to do this in either OpenGL ES 2.0 or DirectX9 with shaders, my peformance is ...
2
votes
1answer
700 views

How to create texture using raw RGBA texture data without having to use LockRect

I was previously uploading textures to DirectX by creating texture in D3DPOOL_MANAGED and then calling LockRect to upload the texture data to DirectX. However, I have switched to using DirectX9 Ex, ...
2
votes
1answer
371 views

How does the Direct3D 9 rasterizer determine triangle coverage?

I'm working on a software rasterizer to use in my project. I have implemented one that works well, however, often my rasterizer under or over estimates triangle coverage. I need perfect emulation of ...
2
votes
1answer
496 views

DirectX11 Swap Chain RGBA vs BGRA Format

I was wondering if anyone could elaborate any further on something that's been bugging me. In DirectX9 the main supported back buffer formats were D3DFMT_X8R8B8G8 and D3DFMT_A8R8G8B8 (Both being BGRA ...
0
votes
0answers
188 views

Radiosity using a hemisphere

I'm working on a radiosity processor. I'm projecting scene geometry onto a hemisphere at a high order of tessellation during a visibility pass onto a 1024x1024 render target. The problem is that the ...
2
votes
2answers
157 views

Replacing 4 additive sprite layers with a single shader. Just can't get it right

I'm using directx9 and have 4 textures I want to draw on top of each other. if I do this: PDevice->SetRenderState(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA); ...
5
votes
1answer
903 views

What does HLSL's tex2D return at (0,0)?

I'm trying to understand the mapping of texels to pixels, especially in the context of pixel shaders. I already found out the following: When I define a standard quad with vertices at integer ...
0
votes
1answer
332 views

Why can a certain DirectX mode produce display lag?

I have written two small test games using DirectX 9. One uses presentParams.Windowed = false; presentParams.PresentationInterval = D3DPRESENT_INTERVAL_ONE; and the other one uses ...
0
votes
1answer
52 views

What does this FVF value in the FVFData block of an .X file equate to?

I'm trying to read and ultimately write a mesh from/to file. This mesh has 2 sets of texture coordinates. The second set I know are held within the FVFData{} block of the .x file. The second set of ...
1
vote
2answers
531 views

UV Atlas Generation and Seam Removal

I'm generating light maps for scene mesh objects using DirectX's UV Atlas Tool( D3DXUVAtlasCreate() ). I've succeeded in generating an atlas, however, when I try to render the mesh object using the ...
1
vote
1answer
506 views

Light Map Generation using DirectX

I'm trying to build lightmaps for an engine I'm working on. I'm using DirectX 9 w/c++ but my questions are related to the methodology behing the generation of light maps. I have a scene built from ...
1
vote
1answer
198 views

Efficient way to draw multiple separated quads

Let's assume I want to draw several separated (possibly textured) quads in Direct3D 9, each consisting of two triangles: How should I draw these for maximum performance, i.e. which of the following ...
3
votes
1answer
884 views

Vertex Buffer Sharing between DirectX11 and Directx9

In my d3d9 engine i want to take benifit of compute shader of d3d11. So firstly I created a vertex buffer in d3d11 with D3D11_BIND_UNORDERED_ACCESS and then tried to create the d3d9 vertex buffer ...
1
vote
1answer
270 views

How to set a global alpha-blending value in Direct3D 9?

Is it possible to set an alpha value globally in Direct3D 9, which modulates the pixel alpha values of every subsequent draw? I would like to let a whole scene fade in/out. I know that for example ...
1
vote
1answer
267 views

Whats the point of this LPDIRECT3DDEVICE9 reference?

I'm going through the DirectX 9 MSDN documentation Which lead me to something rather peculiar, do you need a class reference in DirectX 9? Can someone tell me what the point of the class ...
3
votes
3answers
3k views

How to implement marching cube algorithm for rendering clouds

I would like to render clouds using C#, directX9.0 using Microsoft.DirectX.Direct3D; using Microsoft.DirectX; Now I have roughly add and render the vertex as per below: As you can see, the ...
1
vote
2answers
1k views

how to set image resource path for D3DXCreateTextureFromFileEx method?

I try to merge all the image resources to a folder called resource. So, set image path as "resource/" but my directX framework only works if I compile at VS 2010. If I run from the debug folder it ...
0
votes
2answers
2k views

FPS limit function

I try to cap the animation at 30 fps. So I design the functions below to achieve the goal. Unfortunately, the animation doesn't behave as fast as no condition checking for setFPSLimit() function when ...
1
vote
0answers
364 views

2D Camera transformation sidescroller

i am currently trying to dive into 2D programming with DirectX, especially bulding a tile based sidescroller. I have worked with some chapters from a book (Advanced 2D Game Development) but always ...
-3
votes
1answer
126 views

Undefined fireball movement behavior

Demonstration video I try to do after the player shoot 10 times of fireball, then delete all the fireball objects and recreate a 10 new set of fireball objects. I did it but there is a weird bug ...
1
vote
1answer
2k views

How to set orthgraphic matrix for a 2d camera with zooming?

I'm using ID3DXSprite to draw my sprites and haven't set any kind of camera projection matrix. How to setup an orthographic projection matrix for camera in DirectX which it would be able to support ...
1
vote
2answers
934 views

How to blend the sprite into background?

I try to blend the character into game but I still cannot remove the blue color in the sprite sheet and discover that the white area of sprite is semi-transparent. Before that, the color ...
1
vote
1answer
387 views

How can I compile SM 3.0 effects in D3D11 in SlimDX?

var bytecode = ShaderBytecode.CompileFromFile("shaders\\testShader.fx", "fx_5_0", ShaderFlags.None, SlimDX.D3DCompiler.EffectFlags.None, null, null, out str); var effect = new ...
2
votes
2answers
413 views

Direct3D9 depth write without depth test

In OpenGL and Direct3D11 depth write is disabled if depth test is disabled. To enable depth write with out depth test in gl you must enable depth test with depth func always. OpenGL Even if the ...
1
vote
1answer
215 views

Sharing the effect [closed]

my problem is : If I load 2 models ( the same model zombie ) and give them the same effect I got the following error : for(int i =0 ; i<2 ; i++) { dwarfModel[i].model ...
1
vote
1answer
235 views

Texture Shaders vs. Pixel/Fragment Shaders?

My question is a simple one. Functionally, practically, and performance-wise, what are the differences between using a D3DX Texture Shader, and using a Pixel/Fragment Shader rendered with a full ...
0
votes
1answer
162 views

Are there alternatives to Vertex Tweening?

Now that I'm getting into animating 3D entities in my game, I was wondering what the best approach for this would be. I did some research and came across something called "Vertex Tweening". However, ...
1
vote
1answer
578 views

Flip the whole Directx output horizontally (mirror the output)

I would like to flip the whole fullscreen directX output horizontally so that the final output is presented mirror inverted. Is there a way to create a IDirect3DDevice9 instance which produces ...
3
votes
2answers
681 views

Clipping a windows draw area - Direct x 9 and c++ - 2D using D3D

DirectX 9, C++... Let me set the scene: I have a 16:9 image. I have a 16:10 screen. I want the 16:9 image to be drawn so that it is vertically centred within my 16:10 screen. My 16:9 image is 1920 x ...
-1
votes
1answer
477 views

Changing map 0,0 origin to top left while using D3DXMatrixOrthoLH

Thanks to Tetrad (for pointing out D3DXMatrixOrthoLH ) I have figured out how to set it up in DirectX9. However, the problem I am now facing is my 0,0 mouse position is now in the middle. What I ...
1
vote
1answer
141 views

Select display adapter in D3D9

I have a notebook that has 2 graphics card one Intel and one nvidia graphics cards. When I want to start my game I right click on the exe file and select run with graphics processor->Nvidia but my ...
1
vote
0answers
112 views

changing resolution in game on Playground SDK

I'm trying to make resolution change in my game based on Playground SDK. Now it looks so: TPlatform::GetInstance()->SetDisplay(width, height, fullScreen, letterbox); ...
5
votes
3answers
968 views

DirectX9 thread lock problem with “present” and background loading new textures

Given: Selfmade 3D engine based on DirectX9 written in C++ Task: While render loop runs load additional textures in a background thread Current Implementation: - Create device with ...
1
vote
2answers
604 views

DirectX How to Gernerate Vertices for Diamond Shape and Render it?

How to generate vertices for 3D Diamond Shape in DirectX? EDIT: I am creating an application which receive DIAMETER, CROWN, GIRDLE and PAVILION as parameter and render a model of diamond according to ...
0
votes
1answer
195 views

How do I make multiple instances of an object?

In a game I am working on, I am having an issue with making the player's ship shoot multiple bullets. The bullets have individual X and Y coordinates and velocity for X and Y. When I press "SPACE" to ...