I was going to use the VideoPlayer to render to Camera Near Plane, but I also want to display subtitles for the video for the sake of accessibility. I'm wondering what the best way to do that is.
I can't see anything on a canvas if I render to Near Plane. I'd like the video to appear in front of the scene so that I can have the scene there once the video is complete.
Do I need to be using a render texture to achieve this? Seems like a render texture might incur some unnecessary overhead for my purposes, but I could be wrong.
The idea is this:
Far Background - Scene
Background - Black Image (so i can fade to scene)
Middleground - Video
Foreground - Subtitles
More info:
This is a 2D point and click adventure game with a pre-rendered cutscene.
You could do this with a render texture, place it in front of the camera at an exact distance and size, but I wouldn't. Probably would be a different camera anyway for lighting or clipping purposes.
I would use a second Camera, rendering over top of the Main Camera, with the subtitle UI's canvas targeting the second camera's screen space, and clearing depth only. It will render what it sees, but with a totally transparent background. Then, you can render your video on either the main camera's near plane or the new subtitle camera's far plane.
You could put your black square in front of this camera, too, though it would be in front of the video. It could be UI on the main camera, or stick a third camera in between them. You might have to worry about performance if there are too many cameras, but I have used two or three before to no noticeable performance hit.
Robert Mocks's answer is perfectly tenable and makes sense to me. Thank you for that!
What I decided to do instead was use a RawImage so that I wouldn't have to deal with extra cameras. This way I can use the canvas as I normally would and don't have to deal with render textures.
This involves using the API Only setting along with the following code:
rawImage.texture = videoPlayer.texture;
That seems to work well for me.
Related
Unity 2021.3.16f1/URP 12.1.8
I've just started with Unity a few weeks ago and am still getting to grips with how everything works. So please don't assume I know everything there is to know about Unity. Treat me as a n00b. 😉
I'm building a VR game for the Quest/Quest2. I have a scene with a keypad on a wall. When the payer "clicks" it, I want the scene to go dark, and a large version of the (3D) keypad to appear with which he can then interact (enter numbers). This keypad must always stay in the middle of his view.
What I did was create a canvas, and added a black plane with 50% transparency and the large version of the keypad. I've set up the canvas as follows:
This works somewhat. It has two major disadvantages: 1) the keypad is receiving lighting from the scene while I want it to be fully lit all the time, and 2) the canvas and all its children clip through walls and objects while I always want it to be rendered in front of everything else (yes I know this will mess with your depth perception in VR, but I already have a solution for that).
So the next thing I tried, was stacking cameras. I created a second camera and set is as an overlay camera. I also set its Culling Mask to UI:
Additionally, I added the new camera to my Main Camera as a stacked camera. I changed the Culling Mask of the Main Camera to everything but UI:
This works they way I want it but at a cost: performance takes a huge hit. My frame rate actually halved. I read everywhere that this is a known problem for mobile devices (which the Quest really is).
Another solution I read about, is using RenderObjects. But I can't really find how to use this. I'm not even sure it really is a solution to what I'm trying to achieve.
So can anyone tell me how I should go about doing this? Thanks in advance!
The solution of lighting is the that you can setup the layer of your keyboard to something like "Keyboard"
And in Directional Light you can uncheck keyboard layer.
The solution of second problem is that you can change culling mask of camera on Run Time Like this:
~(1 << LayerMask.NameToLayer("Keyboard"))
renders everything except the transparent layer.
1 << LayerMask.NameToLayer("Keyboard")
renders only the transparent layer.
NOTE: You can set your own layer and check/uncheck what you want it is just a example
I have a pretty large and full scene and therefore gets a lot of draw calls.
Sometimes I display a video in the game, which covers the entire screen.
When I tested my game with Unity's profiler tool I noticed that the camera still renders everything (although occlusion culling is enabled and calculated), and it causes the video to lag.
My question is how can I disable the camera?
When I disable the Camera component or the camera's GameObject I get a warning âš in the game view that says No camera is rendering to this display. Which, I guess, is not good (correct me if I'm wrong).
So I was wondering if cancelling the culling mask on the camera (by setting it to Nothing) would force unity to stop render the scene.
Or does it still do some work in the background?
(Like with UI elements that still being rendered even though they are fully transparent).
Thanks in advance
I have a pretty large and full scene and therefore gets a lot of draw
calls.
I recommend activating "Instancing" on your materials, it can greatly reduce draw calls.
When the UI Pops open, it can help removing the "Default" layer (or whatever layer the majority of your renderers are) from the active cameras. You can do this easily with layer masks. Or you can just set Camera.main.farClippingPlane to 1 or any low number.
I want to implement as showed in the below image in 2D game, I can find so many tutorials for 3D like mini map concept but for 2D i couldn't find anything. In my game i want to show a secondary
camera as in below image and also i need to zoom the content that will show through it. I developed one concept but it can be done with sprites or with Canvas in World Space mode. So you can see
they won't resize or positioned according to the screen resolution. If you guys have any idea how to do this task,it will be very helpful for me. And i also tried with depth mask shader .Thanks in advance.
Use a camera with target texture
Follow my tutorial here: Particles with Dynamic Text but disregard the parts about the particle system, they are irrelevant for you.
Once you've made a material, stop following the tutorial, and instead:
Create a sprite renderer on a canvas that is "Screen Space - Overlay" and set the material to be the one that you created.
How do I activate 2 cameras at the same time? The first camera follows the character and the second camera follows the character more slowly. After a while we can't see the character with the second camera but the point is each camera renders a special game object. The second camera renders the back game object. So two cameras with each other make better scene moving. Is this possible?
I believe you are looking to implement a scene background parallax where the background appears to be moving across the scene slower than the forground.
Take a look at this video about separating your scene's layers. There is a quick fix solution in the first few minutes of the video, and a longer re-work that is a good idea to think about.
Parallax Scrolling
I'm trying to build some simple game(learning) where you will have to clean objects.
That means for example you have a monitor with dust on it so you can't see the image. You then uses mouse or finger to move arround monitor to make image visible.
So what I've got so far is 2 images first being the monitor image and second being the dust before it. I've managed to realize when user swipped all image down. But what would I like to do is when user tap the screen somewhere only in that radius r the front image disappears.
I'm guessing I should be using layer mask, but I have no idea how to do it.
I basicly managed to write my own shader that only shows layer with correct image but no idea how to do that you can accualy get some cool effect from it.
Any ideas will be apriciated!
I would use render texture for this. It allows you to use image files as a brush. And it's quite fast. The idea is to use render texture as a mask. You start with black texture. Whenever player touches the screen you render your brush image to this texture. But this feature (render textures) is available only in Unity Pro.
You can still use texture as a mask if you don't want to buy Unity Pro. But this will be definitely slower than render textures. How much slower I don't know. The options are:
Create ordinary texture (Texture2D) and use SetPixel or SetPixels to update mask when player touches the screen. If you want to go this way, I would recommend to use much smaller texture than the screen size (4x, 8x depends on the quality you want to get). Otherwise it will be damn slow.
Create ordinary texture (Texture2D) and use ReadPixels. This works pretty much the same way as render textures but it's slower. This technique is explained here.
Using render texture (requires Unity Pro)
Ok. I've made an example: https://drive.google.com/folderview?id=0B60e_iFEZd1-RlB4LVN6NE84clU&usp=sharing
There are:
Image that player needs to clear from dust: Image.jpg
Image of dust that we draw on top of it: Dust.png
Image that we use as an erasing brush: Brush.png
Our render texture that we use as mask for dust: Mask.renderTexture
Shader that we use to update the mask: MaskConstruction.shader
Shader that we use to render dust (it combines Dust.png and render texture): Masked.shader
Script that brings everything to life: MaskCamera.cs
Main scene: Main.unity
I think this might be helpful. The Main objective of this Code sample is to create a dust/fog removing effect using Unity. Using, Texture Masking shader, Mask Construction Shader, Render Texture, Camera Masking Script and masking camera, you can create your own effect. Read on to know how and download the source code. It’s free!!
http://studio.openxcell.com/remove-dustfog-object-unity-swipe.html