Setting the Fullscreen Resolution

Thanks for your help.

EDIT: I can't seem to figure out how to stretch my resulting image each frame. Can't I just modify my viewport or something?

Maxamor at 2007-9-3 >

graphics.GraphicsDevice.StretchRectangle(graphics.GraphicsDevice.GetBackBuffer(0, 0),
new Rectangle(0, 0, 320, 240),
graphics.GraphicsDevice.GetRenderTarget(0),
new Rectangle(0, 0, 640, 480),
TextureFilter.None);

I know I shouldn't hardcode the destination rectangle but just for the sake of getting this working I am doing so.

Where exactly should I place this call? I've tried between GraphicsDevice.BeginScene() and GraphicsDevice.EndScene(), I get InvalidCallException.

If I place it between EndScene() and Present() I also get the same exception.

Where can I make the call safely?

I have read the requirements from the API, but I still can't get this working.

GraphicsDevice device = graphics.GraphicsDevice;

using (Texture2D dstTexture = new Texture2D(
device,
device.Viewport.Width,
device.Viewport.Height,
1,
ResourceUsage.RenderTarget,
SurfaceFormat.Color,
ResourcePool.Default))
{
using (Surface dstSurface = dstTexture.GetSurfaceLevel(0))
using (Surface srcSurface = device.GetBackBuffer(0, 0))
{
device.StretchRectangle(
srcSurface, null,
dstSurface, null,
TextureFilter.None);
}
}

I can render and stretch to another texture, but if I try to set the dstSurface to device.GetRenterTarget() I get the InvalidCallException.

I find it hard to believe that nobody has had to do this before. I'm very leary of having to make multiple copies of these surfaces to stretch a rectangle to the correct size.

Any ideas?

Maxamor at 2007-9-3 >

I tackled something like this a little differently. I created a ScaledSpriteBatch class which inherits from SpriteBatch and given a base resolution (in your case 320x240) it calculates the actual destination rect or vector from the one supplied in the Draw() method. So I implemented my own override of each Draw() method and recalculate the destination and then call the base SpriteBatch draw method. Seems to work well, although the StretchRectangle technique may be more efficient, not sure.

BillReiss at 2007-9-3 >