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.
0
votes
2answers
57 views
HLSL Pixel Shader Compile, Flow Control, Instruction Count, XNA Issue
im trying to find help with an issue im having moving from the XNA 3.1 framework to XNA 4.0. The shaders I wrote for my 2D game work fine in XNA 3.1, but wont even compile in 4.0.
At first I got ...
0
votes
1answer
70 views
Fog shader camera problem
I have some difficulties with my vertex-fragment fog shader in Unity. I have a good visual result but the problem is that the gradient is based on the camera's position, it moves as the camera moves. ...
0
votes
0answers
38 views
Blur Shader strange behaviour
I tried to implement the blur shader shown here.
But instead of having a simple 2D texture I use Unity GrabPass function to capture what's behind the plane to have a transparent effect.
Then I apply ...
2
votes
1answer
91 views
Simple Optimized Blur Shader
I have a vertex-fragment shader that use the Unity3D GrabPass functionality (it grabs the screen). And I apply my GrabPass to have a transparent effect.
GrabPass {
"_GrabTex"
}
sampler2D ...
1
vote
0answers
50 views
How to correctly synchronize a shared surface?
I am trying to share a direct3d9 surface between two processes. One process (let's call it A) writes to the surface, and the other (B) displays it on screen. Currently, process A does a StretchRect of ...
1
vote
1answer
70 views
DirectX11 Gamma Correction
I am writing a game using SharpDX with DirectX11 and I have been reading that it is important to apply gamma correction to my engine in order to perform correct linear lighting calculations.
So I ...
5
votes
2answers
59 views
What range of values can HLSL's tex2D function return?
When using the tex2d function in a HLSL shader, as so:
float height = tex2D(heightMap, IN.texCoord).r;
What range of values can be returned to the height variable? Is it always a number between ...
2
votes
0answers
29 views
Creating a d3d surface from pre-allocated system memory?
I thought I read somewhere that one could create a OffscreenPlainSurface from an existing system memory buffer, but I cannot seem to find the reference anymore.
My use case is copying a frame from ...
1
vote
0answers
61 views
3D Model Loading in DirectX 11
At the moment I am trying to implement fbx model loading in my DirectX 11 code. This is old code I had create for use with DirectX 9 and I'm simply trying to bring it back up to date.
Since I first ...
7
votes
1answer
187 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 ...
2
votes
1answer
321 views
Is the “impossible object” possible in computer graphics?
This may be a silly question but I want to know the answer to it. I saw this thing called the "impossible object", while they're many different images of this online, it's suppost to be impossible ...
2
votes
2answers
121 views
3D Distortion Effect
I'm trying to make a distortion effect similar to this:
However I'm not making a 2d screen space effect. I'm applying it to a 3d scene and I want it to be placed IN the world, so it can be blocked ...
-2
votes
2answers
71 views
Rendering structure [closed]
my question is "What is the best way to structure rendering code".
Is it better to make a class with a render function that iterates through all game objects
based on there name or type and have no ...
-3
votes
2answers
66 views
Can you use a struct instead of an array to hold vertices in directx?
So instead of using an array to hold vertices information use a struct instead.
Is this possible, does the Idirect3dvertexbuffer allow it?
0
votes
1answer
84 views
Why DirectInput is not recommended?
I have read that the Windows messages are recommended way over DirectInput to control mouse and keyboard.
From http://msdn.microsoft.com/en-us/library/windows/desktop/ee416842(v=vs.85).aspx
The ...
-2
votes
0answers
25 views
Directx9 Moving a Character on a Terrain [closed]
I have a terrain generated with a Raw file and I want a character to move properly based on heighmaps. Any example ?
3
votes
2answers
86 views
Extract smaller frustum from camera frustum?
Background:
I was thinking of implementing multiselection by performing a frustum culling on a sub-part of the screen.
Problem:
Given total screensize, a rectangle on the screen (pos, size), and ...
0
votes
0answers
31 views
DrawIndexedPrimitive bug
Hello I have problem with DrawIndexedPrimitive function.
I create vertex buffer for each wall like that:
1----2
| |
3----4
I put 1,2,3,4, and then I create index buffer this way:
short * ...
1
vote
1answer
112 views
How should I setup my minecraft-like world rendering for the best performance?
I want to know what technique will give me most fps in game. I have minecraft-like world and I need to display it. Now I have only one cube, created as VBO and if i need to display cube I just display ...
0
votes
0answers
59 views
Skeletal Animation in DirectX [closed]
A few weeks back I asked the following question: Are there alternatives to Vertex Tweening?
I was pointed towards Skeletal Animation, or more specifically: Hardware Skinning. While I found quite some ...
1
vote
0answers
48 views
Why is my XInput gamepad press stamp not working?
I'm trying to add basic gamepad input to my c++ DirectX game but i'm having some trouble creating a press stamp (registers the press only the first time it's pressed if button held down).
The entire ...
1
vote
1answer
87 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 ...
-1
votes
1answer
76 views
Are there any open-source Direct X code-bases that I can look at to learn from as a beginning Direct X and graphics programming student? [closed]
I'm a third-year university student and I've recently begun studying Direct X 11. Mostly I've been following the samples from the SDK and reading a lot out of the MSDN. Although I have a decent ...
0
votes
1answer
45 views
PIX and Metro apps
I would like to use Pix on a Metro (Win 8) app. However, Pix wants the path to the application, something that Metro apps don't have. Has anybody been able to get Pix working with Metro?
6
votes
2answers
187 views
In DirectX 11, batching primitives for performance, how does this actually work?
I don't seem to be able to understand this. Microsoft says that one of the possible optimizations of for a Direct3D 11 if to batch primitives draw calls. For example in order to draw say 300 triangles ...
1
vote
1answer
90 views
Can not enable IME to capture Chinese characters in SharpDX
Just found that direct integration of IME is blocked in Windows 8, moving on to TSF now.
By now, there is lack of Microsoft's Document about TSF, this will be hard.
I am using SharpDX and the ...
-3
votes
1answer
165 views
Which should I learn: DirectX or XNA? [closed]
I've worked with the Microsoft Foundation Classes(MFC) and now I want to enter the world of game development.But should I start with directX or XNA? I'm hesitant towards DirectX because I feel it ...
0
votes
1answer
127 views
Render just the pixel under mouse cursor in DirectX
I'm having difficulties rendering just a single pixel which is on the defined coords of viewport. I'm using D3DXMatrixPerspectiveOffCenter function, but the result is not what I expected.
Here is ...
1
vote
2answers
109 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 ...
3
votes
2answers
65 views
using DirectX to generate a sprite sheet
I am building a site in HTML5 for my client and it must run on the iPad/iPhone (i.e. Safari on iOS).
They want a 3D effect where they have a simple, yet, specific product they want to show on the ...
-1
votes
1answer
71 views
simple win32 window wont show [closed]
The program compiles and runs successfully but does not show a window, it simply ends immediately.
#include <Windows.h>
LRESULT CALLBACK WndProc( HWND hwnd, UINT message, WPARAM wParam, ...
0
votes
1answer
39 views
Sprite rotation and question about sampler state
I'm not an expert in creating game engines, but I'm doing fine for now. Recently I reached a point that I couldn't solve any of my problems. I have two questions:
I'm using ...
-2
votes
1answer
54 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)?
1
vote
1answer
86 views
Passing multiple colors to a pixel shader in DirectX
I have a pixel shader that sets the output color based on the interaction of an input texture, sort of like:
if (case1)
{
output.Color = float4(0, 0, 0, 0);
}
else if (case2)
{
output.Color = ...
0
votes
0answers
37 views
Best approach to depth streaming via existing codec
I'm working on a development system (and game) intended for games set mostly in static third-person views. We produce our scenery by CG and photographic techniques. Our background art is rendered ...
0
votes
0answers
68 views
Can't Load Shaders [closed]
I have a Windows Phone 8 XAML with DirectX project. I have written some code to load textures and shaders to simulate a particle system. The particles render to the DrawingSurface XAML control. ...
0
votes
1answer
118 views
Rendering a simple game and multiple simple geometry [closed]
For a while I have been looking to create a simple 2D game, but I have been lacking in time to create such a thing, recently I have had more time to purse that.
I have been working my way though some ...
0
votes
1answer
168 views
How do I implement my old OpenGL-based gfx_render_triangle_list using DX11?
I am working at a game that has lots of procedural content. I had built a game engine using OpenGL that handles everything needed for creating a basic 2D game, sprites, primitives, blending, polygons ...
0
votes
0answers
51 views
DirectX9 toggling display problem
How can I reset a render target? I am trying to toggle between fullscreen mode and windowed mode but without success. I've tried all the possible combinations in the code below. I am rendering to a ...
0
votes
1answer
128 views
Latency difference between DirectSound and XAudio2
As far as I understand the WDM, DirectSound drivers cannot be hardware accelerated on Windows Vista and newer. Is XAudio2 affected as well?
Or in other terms: in latency terms is it definitely better ...
0
votes
2answers
115 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 ...
2
votes
1answer
65 views
Emulate border color texture address mode efficiently
In WinRT the border color texture address mode is not supported.
The best I came up with in emulating the border address mode, is doing this in my pixel shader:
float4 tcol = tex.Sample(texSampler, ...
-1
votes
1answer
114 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.
2
votes
1answer
166 views
Rotation matrix from OpenGL to DirectX
I have an application which uses openGL and i have to port it to DirectX.
To sum up my issue : How can I port rotation matrix based on a right-handed coordinate system to a left-handed coordinate ...
1
vote
2answers
273 views
Camera frustum calculation coming out wrong
I'm trying to calculate a view/projection/bounding frustum for the 6 directions of a point light and I'm having trouble with the views pointing along the Y axis. Our game uses a right-handed, Y-up ...
0
votes
2answers
244 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, ...
-4
votes
1answer
84 views
My 2d Shader in XNA falls apart the second I put it into Farseer [closed]
I wrote a simple light shader that I tested in a simple 2d spaceship shooter and it worked fine. Once I imported it into my friend's farseer project with rotatable shapes, it doesn't seem to work ...
0
votes
0answers
66 views
Getting Started with a Custom .X file Importer/Loader
I'm building my own C++ DirectX game/engine and I've noticed that .X is no longer really supported past DX9 and I've been looking into converting my 3D model files, .X, .3ds, .COLLADA into binary dump ...
0
votes
1answer
129 views
How do I create a camera for a strategy game?
How do I make a camera for a strategy game? Think something in the style of Warcraft 3, so you can lower the camera angel and view the world in a somewhat 3D format. Do I need to have some coordinate ...
1
vote
2answers
119 views
One or multiple VertexBuffers
I'm currently working on a personal project where I'm trying to load the levels and all of the geometry from the game "Medal of Honor Allied Assault" into my own C# code-base based on SharpDX.
I ...
