Timeline for MonoGame SetRenderTarget is wiping the backbuffer
Current License: CC BY-SA 3.0
7 events
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| Jan 1, 2015 at 7:01 | comment | added | James Carlyle-Clarke |
Thanks Andrew, that solved it. To clarify, I put graphics.PreparingDeviceSettings += new EventHandler<PreparingDeviceSettingsEventArgs>(SetToPreserve); in my game creation function MyGame(), and then added the function void SetToPreserve(object sender, PreparingDeviceSettingsEventArgs eventargs) { eventargs.GraphicsDeviceInformation.PresentationParameters.RenderTargetUsage = RenderTargetUsage.PreserveContents; } - that did exactly what I was after. You are the man, many thanks.
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| Jan 1, 2015 at 7:01 | vote | accept | James Carlyle-Clarke | ||
| Jan 1, 2015 at 2:31 | comment | added | Andrew Russell |
@James No worries. Regarding your second comment there: You have to set PreserveContents on the backbuffer to avoid the clear of the backbuffer during SetRenderTarget(null). The code you have there only avoids the clear of the render target when you call SetRenderTarget(renderTarget).
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| Dec 31, 2014 at 7:03 | comment | added | James Carlyle-Clarke | Oh, and thanks for clearing up that this is the expected behaviour - it was driving me crazy thinking I was missing something in all of this! | |
| Dec 31, 2014 at 5:24 | comment | added | James Carlyle-Clarke |
I tried modifying my RenderTarget creation to renderTarget = new RenderTarget2D(graphicsDevice, 200, 200, false, graphicsDevice.PresentationParameters.BackBufferFormat, graphicsDevice.PresentationParameters.DepthStencilFormat, graphics.PresentationParameters.MultiSampleCount, RenderTargetUsage.PreserveContents); and I still get the backbuffer wiped. Any thoughts?
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| Dec 31, 2014 at 5:22 | comment | added | James Carlyle-Clarke | Hi Andrew, thanks for the reply. I can quite see that ideally it's best to just shuffle the order of drawing to avoid this, and I will - but I would like to have the option to do it later in case I have the need in this or future projects (I'm making a personal library and this could come up again). | |
| Dec 29, 2014 at 6:29 | history | answered | Andrew Russell | CC BY-SA 3.0 |