Multiview viewport

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Hello.

How to change main viewport image size so I can fit multiple camera views? (Like 3dMax divide screen with 1,2,3,4 views)

Viewport class do not set output size, only image dimensions https://developer.unigine.com/en/docs/2.5/api/library/rendering/class.viewport?rlang=cpp&words=viewport#highlight 

Searching forum I found that I can render to Image/texture and place it above main render window using WidgetSprite , but overlapping render images just waste of performance.

how to setup proper multi-camera-view in main view?

thanks

[silent]

Hi,

As far as I understand - you can disable main renderer (Render::setEnabled(0)) and replace it with set of in-depended viewports that can be placed in whatever position you want via WidgetSprite or any other method.

Thanks!

[lightmap]

ok,

I'm done multiview with 3 WidgetSprite and got frame rate drop from ~600 to ~40 on scene with one simple object.

each view has struct like:

		public WidgetSprite spr;
		public TextureRender m_pTextureRender;
		public Texture m_pTexture;
		public Texture m_pTextureDS;

in render, for each frame and each view, I have:

			if (m_pTextureRender.isEnabled() == 0) m_pTextureRender.enable();
			m_pTextureRender.setColorTexture(0, m_pTexture);
			viewport.render(Game.get().getPlayer().getCamera());// one camera for tests
			m_pTextureRender.disable();

			m_pTexture.getImage(viewportImage);
			w_sprite.setImage(viewportImage);

I suppose it do a lot of texture copying

Is there any possibility to make it work faster?

[silent]

Any possibility to check the small test scene? 

Thanks!

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Yes, test project in https://drive.google.com/open?id=1N5QViEu5XuYOkC-E79sRAw01Uw6IQ2GY

 code from unigine wpf example

All related code can be found in

.Renderer3D\Views\UnigineControl.cs 

in class

public class UnigineApp : App

in method

public void OnPaint()

thanks

[lightmap]

Hello,

Any comments on test project code?

[silent]

Hi,

We didn't have much time to get this working yet, sorry.

Is there any chance to have 'Release' build working? It's required because there is big overhead with debug builds. Right now I already have quite big spikes with a single window running (30-70 fps on GTX 970):

With multiple windows (Operators Cam button pressed):

The Average FPS is not changed much.

Thanks!

[lightmap]

Hello,

Here link to release version https://drive.google.com/open?id=1HNzGvQYlXRAnfKy46R5jHorM9SO3FuUN

for me debug fps drop are not noticeable, comparing to release

[silent]

We've checked your test scene. The performance drop is caused mostly by constantly copying textures from GPU to CPU and vice-versa. You can use WidgetSpriteVIewport to avoid this.

Please, check the attached modified sources.

Thanks!

UnigineApp.cs

UnigineRenderTarget.cs

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Thank you

now replacing WidgetSprite to WidgetSpriteVievport makes fps drops from 400 to 300, acceptable