I am trying to impliment a guassian blur into my game and I keep getting this error when I try to import it into my project. Here is the code I used to define the effect:
Dim bytes As Byte() = File.ReadAllBytes("Content\Effects\effects.mgfxo")
Dim effect As Effect = New Effect(Game.graphics.GraphicsDevice, bytes)
Somewhere in the code for the .fx file do I need to specify the platform before converting it to a .mgtx? Thanks!
After much confusion, I finally came upon my answer (somewhat). The issue lied in the code inside the .fx file. This code ran without crashing on my windows 10 PC:
PixelShader = compile ps_4_0_level_9_1 PS_GaussianBlur();
After I changed the code, I used the monogame pipeline tool to convert it to an xnb file and plopped it into my content/Effects folder. I then used this code to directly run it:
Dim effect As Effect = content.Load(Of Effect)("Effects\GaussianBlur")
With all that said and done, the Gaussian blur effect does not occur. Whenever I try to do this, the output texture2D is only a solid color (color depending on what was in the top left corner of the original image). If anyone knows how to fix it than id greatly appreciate it, although I will be setting up a new question for that and give more detail.
Related
In order to refresh a part of the grid, i.e., when font or alignment changes, I was using the following approach:
wxRect rect1=CellToRect(TopLeft);
wxRect rect2=CellToRect(BottomRight);
wxRect r(rect1.GetTopLeft(), rect2.GetBottomRight());
RefreshRect(r);
This was refreshing only a part of the intended block and was not working correctly.
From the suggestions of intellisense I came across RefreshBlock function and it works correctly. I searched the docs and have not found any information on it. I wonder if it is not recommended to use RefreshBlock for some reason? What does RefreshBlock do, does it refresh a block (as the name suggests) or is it equivalent to Refresh?
I am using wxWidgets 3.2 on Win10.
Thanks in advance.
The function RefreshBlock() is indeed the best way to do what you want and it was only undocumented by mistake, i.e. we simply forgot to do it. I've added documentation for it only now, so it will only get included in 3.2.1, but you can still use it in your code, the function itself is available since 3.1.3.
It seems from the source code that, depending on the location of its parameters, RefreshBlock refreshes any of the following:
corner grid
frozen cols grid
frozen rows grid
main grid
Since the area I wanted to refresh was on the main grid the following approach works (the idea is similar to RefreshBlock's approach):
auto GridWnd = CellToGridWindow(TL);
wxRect rect = BlockToDeviceRect(TL, BR, GridWnd);
GetGridWindow()->RefreshRect(rect);
Now everything is refreshed correctly.
Notes:
If only RefreshRect(rect) is called, things will NOT work as expected.
Little experiment showed that BlockToDeviceRect(TL, BR) also works, therefore eliminating the need for auto GridWnd = CellToGridWindow(TL);
I'm working on a Unity project for Hololens, that uses the camera to capture pictures, send them to a photo recognition API and displays the result. The project works perfectly fine in unity, but not on the emulator/Hololens.
Unfortunately, I wrote a lot of code at once, so i don't know at what point this problem started. The problem show's up after building the project and running it on the Hololens/emulator in Debug mode. On the Hololens, I see the starting window (the one you see after you open any application). After i place it, i see End showing splash screen. on the Output window in Visual Studio, and it just doesn't go any further (but doesn't freeze either, just does nothing).
I don't know where it's coming from, since no exceptions are thrown, but i suspect the camera is the cause. Earlier, i had to comment this line of code:
transform.position = Camera.main.ScreenToWorldPoint(new Vector3((CameraManager.Resolution.width * .5f), (CameraManager.Resolution.height * .5f), 10));
because the function ScreenToWorldPoint was throwing the following exception:
Screen position out of view frustum (screen pos 0.000000, 0.000000, 10.000000) (Camera rect 0 0 0 0)
As you see it says that the Camera rect's size is 0. I even tried directly logging the camera's dimensions to make sure (Debug.Log(Camera.main.pixelWidth + ", " + Camera.main.pixelHeight)), and sure enough, they were (0, 0) on the Hololens/emulator.
I made sure that webcam is supported, and that my camera settings are all set, but that didn't help either.
So i'm not sure if that's the cause of the problem or simply a symptom. And I can't start anywhere since neither the Output nor the Error window show anything wrong. Any help or suggestions would be greatly appreciated.
Thanks for reading!
Edit: Here's the entire output log from beginning to end.
Edit2: I don't know if this is significant, but if I paused execution (in Visual Studio), it always seem to be at Build/ProjectName/App.css => Line 78:
[MTAThread]
static void Main(string[] args)
{
var app = new App();
CoreApplication.Run(app); //<===== Here
}
You might want to check any of your Start() methods. You might have some code that is CPU intensive. Even if it runs smoothly in Unity, doesn't mean it will run easily on HoloLens since their CPU is not powerful.
Also, to avoid any Camera problems, make sur to use the Camera prefab from this
repository :
https://github.com/Microsoft/MixedRealityToolkit-Unity
Those are just some thoughts, hope it helps!
Turns out i didn't enable "Virtual Reality Supported" under Other settings in PlayerSettings. It's really dumb, but i hope this helps someone.
I've been trying to make a Unity game that uses the Xbox One Kinect (V2).
I followed the instructions in this tutorial:
http://www.imaginativeuniversal.com/blog/2015/03/27/unity-5-and-kinect-2-integration/
There are two sample scenes in this zip file: (1) KinectView and (2) GreenScreen.
When I run the first sample (KinectView), the image looks warped, like the right part of the screenshot below:
When I run the second sample (the GreenScreen scene) I get a Null frame error:
Now I'm not really concerned the warping issue in the first scene (KinectView). I am concerned with the Background Removal feature in the second scene (GreenScreen). All I need is to see myself clipped against a custom background.
Can anyone help me figure out how to fix this NULL MSFR Frame issue?
I have uploaded the zipped project in case anyone is interested:
https://www.sendspace.com/file/j2ftqz
Thank you very much.
Update:
I have been messing with some of the Shader options in the Inspector, and noticed that all shader options work except the DX11\GreenScreenShader one. Some of them look like a normal video capture; others are better lit (additive/multiply/alpha blend/etc...).
Why is it that the DX\GreenScreenShader option is the only one that does not work, and instead show nothing more than a pink square.
Screenshot below.
Open the shader in question on your favorite text editor and change these two lines:
1) Line 15. from Texture2D _MainTex; to UNITY_DECLARE_TEX2D(_MainTex);
2) Line 59. from o = _MainTex.Sample(SampleType, i.tex); to o = UNITY_SAMPLE_TEX2D( _MainTex, i.tex );
Updating the shaders as shown above will solve the issue you describe.
Secondary Reference/Source: https://forum.unity.com/threads/kinect-v2-0-sdk-green-screen-demo-for-unity-3d-not-working-why.467687/
I would like to start off by mentioning that I am very new to coding, so some things that might seem very simple to someone with intermediate experience will probably not click quite as fast with me.
Okay so with the code I am writing, I am trying to get a three.js cube object to move to the places I click, using tweening. I managed to get this to work, but when I try to create a frame using three.js lines, the code stops working. In detail: when I add
line = new THREE.Line( lineGeometry, new THREE.LineBasicMaterial() );
scene.addObject( line );
to the Init() function. What is cause of this? My guess is it has something to do with global/local variables but even if that were correct I have no idea how to fix it !
This is the jsfiddle for reference
So ive been doing some iphone development with some OpenglES in it, but i am getting a rather weird error when i call prepareToDraw on my effect. My program in short simulates dice rolling (trying to learn objective-c and opengl). The program works fine for the most part, i can use everything ive programmed my app to do (with its bugs in the physics but ill fix that later). The problem comes in after ive used the part that contains the OpenGL.
The program contains 2 menu's you have to go through in order to reach the screen that is using OpenGL, once you have used the apps OpenGL part and go back to the previous menu, then try go back to the OpenGL part again, i get a print out saying GL ERROR: 0x0501. ive narrowed it down to be caused by the prepareToDraw method from my effect. The other weird part about it, is if i go back, then forward again, the OpenGL works again, and can be repeated again and again for it to be working and breaking every second time you go into the OpenGL part.
I've been searching around for similar problems to mine, but each time its got something to do with loading textures that are not a power-of-two texture, which doesnt help me because im not even using textures yet, just colored vertices.
ive pastebin'd my two code files where the problem should lie
Dice.m: http://pastebin.com/ze1DEEzs
in the draw method you'll see my printouts have narrowed down where the problem lies, which is the prepareToDraw method. (line 308)
RollViewController.m: http://pastebin.com/VycwAh3R
this file is where i setup the effect and the context etc, so i must be doing something wrong in here to cause the prepareToDraw method to mess up every 2nd time i run the OpenGL part of the program. i have a feeling it has something to do with not letting go some kind of resource to do with the context and the effect, but i cant find anything about deleting context and effect (probably because you dont need to but im not sure).
I hope there is someone out there that has run into the same problem and can answer my question and i hope its not just a silly mistake because ive been trying to solve this for a while now :)
thanks
After much pain and suffering i finally found a fix to the problem. Im not exactly sure why this is a problem, but creating the context within the OpenGL part (aka RollViewController.m) is not the way to do it. Instead you should create it once throughout the lifetime of your program and just set your current context for your glkview to be the context you have made. Maybe someone can enlighten me why recreating the context is a bad idea.
In my code i have a profile object that gets passed around between views and menu's so that they can all communicate with the same data, so i just defined a public context within my profile object so that everything can get access to the context instead of creating their own (and breaking).
The error seems general and might be because of different issues. I avoided it(for now) by not using mipmaps. I commented the following code I had and don't have the error anymore.
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
glGenerateMipmap(GL_TEXTURE_2D)