Screen size question

[patrickwai]

Hi Edge,

For Symbian 9.1 S60, I know the graphics can be enlarged or reduced separately using the Blt(). I have the graphic set for 176x208 devices, can I enlarge the hole screen to fit the resolution 352x416?

Thanks

[edge]

[patrickwai]

Hi Edge,

As value equals to 65536 will no scale, what should be the value if I want to double size the image?

[edge]

Hi Patrick,

Just multiply 65536 * 2 to double size the image. 65536 / 2 will half its size.

Please note that in Blt(), x/y position 0,0 is the center of the screen.

[patrickwai]

Hi Edge,

After using Blt() to scale the image, the program ran slowly, what is the problem?

Thanks

[edge]

Hi Patrick,

Blt() is an expensive operation, especially when scaling a whole buffer.

A better solution might be to scale your internal surfaces (sprite and tilesheets, title screens, etc.) when loading them. You may also create a different graphics resource pack with upscaled graphics.

Working with native high-resolution graphics is faster than doing an upscale at the end of OnNextFrame().

[patrickwai]

Hi Edge,

How can I scale the internal surfaces when loading?
I found the API of Symbian for zooming (TZoomfactor and MGraphicsDeviceMap), does Edge support this API? If yes, is there any reference or example?

Thanks

[edge]