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  Animating a texture?  (Read 822 times)
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Offline ags1

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« Posted 2012-08-14 19:46:12 »

Is this possible, a combination of 2D and 3D art - I am thinking of doing this but I wonder if it kills performance or is basically impossible, consumes too much memory or whatever?

Offline gouessej
« Reply #1 - Posted 2012-08-14 20:29:09 »


I do that in TUER, I update the texture data in the introduction scene, when my continent becomes entirely red. I advise you not to do so or it will be slow on Intel GPUs, rather use several textures.

Offline ags1

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Make code not war!

« Reply #2 - Posted 2012-08-14 20:33:34 »

I was thinking of loading a sheet of texture frames into memory and then using texture coordinates to cycle through the animation. It would mean a large master texture image.

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Offline gouessej
« Reply #3 - Posted 2012-08-14 21:40:58 »

Why not but you could use better images by using separate textures. You have to find the best trade-off. If you want to support low end hardware and especially smartphones, the maximum texture size will be quite small.

Offline theagentd

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« Reply #4 - Posted 2012-08-14 21:56:07 »

Easy with a small vertex shader. Just send in a frame index, calculate the offsets and set it as the texture coordinates.

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