[ scummvm-Patches-2216641 ] GRAPHICS: PixelFormat introduction

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Patches item #2216641, was opened at 2008-11-02 17:46
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Johannes Schickel (lordhoto)
Assigned to: Max Horn (fingolfin)
Summary: GRAPHICS: PixelFormat introduction

Initial Comment:
Hi,

since we need some way to get a usable pixel format description of the overlay's one, I started to create a SDL_PixelFormat similar struct: Graphics::PixelFormat. This patch basically only adds PixelFormat and a few helpers (RGBToColor, ARGBToColor, colorToRGB, colorToARGB).

The helper functions are currently marked as 'inline', one might want to think about that, but I think it should be fine.

The patch also adds a (documented) method "getOverlayFormat" to OSystem. SDL backend is updated to support it.

Usage for this struct might be:
- GUI's VectorRenderer
- Scalers, seeing patch tracker item #1664514 "Support for a 32 bit _hwscreen in the SDL backend"
- Graphics::Surface to connect a given pixel format with an surface
  -> GUI's GraphicsWidget, to allow easier conversion to overlay format (falls under Graphics::Surface connection of course)



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You can respond by visiting: 
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