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I am trying to design a game which would use SVG images for sprites. I am using SDL (without openGL) for this in the hopes that I can get it running on Linux, FreeBSD, OS X, and Windows (at least). I want to use SVG so that depending on the resolution/window size that the user chooses, I can re-render all the sprites so that they stay crisp when enlarging them.
My problem is that I cannot find a way to convert an SVG graphic to a raster format while keeping the program cross-platform. I would ideally like to render the SVGs to PNGs (or other raster formats) whenever I need to resize all the images, although it would also work to load straight from SVG to an SDL surface.
I am trying to keep dependencies to a minimum. Does anyone know of a library (or command line program) which exists for all of these platforms that I could use to perform this task?
I don't know of a lib that will help with this and even if there was would it have any benifits? Would the sprites not be the same size no matter what the resolution? ie 32*32 64*64 etc. When you saying you are scaling them could you explain what you mean, when loading to a surface?
SDL_image supports a number of image types:
Personally I mainly use bitmaps and load with my own loader.
I forgot to mention before that I would want to be able to use full screen mode as well.
If I wanted, for instance, to have the option to use a resolution of 640x480 as well as 1024x768 (or any other resolution), but to keep the sprites looking about the same size regardless of the resolution chosen, I would have to use a larger sprite for the 1024x768 window (if I enabled full screen mode), correct? And if I were to just make all the sprites really large png's in the beginning and then shrink them to the appropriate sizes, wouldn't rendering a vector image straight to the target size would look better than the shrunken png?
What I want is to have an SVG sprite and be able to say, "draw the sprite as a 64x64 surface" or "draw it as a 128x128 surface", etc. When the user selects a resolution I wanted to be able to render all the SVGs to the size I wanted them to be, so that the could be used later on.
Yeah, that and librsvg (Also for Linux only as far as I know) were the only things I had found. I was just hoping that I was missing something simple, since it seems like an open format like SVG that has been around for five years would have wider support.
I found something on Google that, while not exactly what I was looking for, may be modified to suite my purposes. It's called AGG, for Anti-Grain Geometry - http://www.antigrain.com/. It seems to be a C++ library with no dependencies beyond the standard library (and thus is portable) whose purpose is to render graphics. It comes with a bunch of examples, one of which is an SVG viewer that produces really nice looking results. I haven't looked at it much yet, but my first impressions of it are good. It uses a modified BSD license which claims to be GPL compatible. I may be able to use it to work with my program.