Javascript Canvas pixelformat

Question

I noticed that everyone who works with the Canvas object multiplies around the pixelbuffer by 4 (RGBA). I worked a lot with built-in pixel coding (Delphi and C ++) and recognized this as a regular 32-bit RGBA (encoding 888-8). My question is : is there a way to detect the browser pixel format? If you are working on a device that supports 16-bit (565) or 24-bit (888) encoding, this will be very slow if the browser has to lower the bitmaps for each redraw. Especially when using alpha blending.

Also (and this is secondary): Is it possible to create a clean 888 or 565 raster map in general under javascript? Or what about an 8-bit palette based on a bitmap? JS-based games would benefit only by being able to work with 8-bit pixels in my view.

Answer 1

No. There is no way to lower the pixels of the canvas, since this is what imageData is just up to the specification itself.

You can, of course, create a javascript game using only 8-bit PNGs, which will save loading time and time, but not display the time.

Answer 2

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Answer 3

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