hello, when using rectangular texturing, coordinate goes from 0 to image pixel size. when using "rectangle 0" mode, pixel coordinate goes from 0 to 1. (sometimes 1 is for the power of 2 bigger than the image pixel size)
so, in rectangular mode, use pixetl_size - image coordinate to flip the image. and 1 - image coordinate in non rectangle mode. Image can be fliped because the "fliped" flag is not used on the shader. cheers c Le 08/04/2013 09:24, Patrice Colet a écrit :
Hello, how is it possible to flip upside down an image in glsl example 05.multitexture I tried to implement this in fragment program: http://stackoverflow.com/questions/9857089/flip-upside-down-vertex-shader-gles but it doesn't work. The only thing I can do is changing texture scale and position, but I couldn't do it with negative values like it would be done in pix_coordinates. In fact when I use pix_multiimage before pix_texture, the image gets flipped, I don't know why... Colet Patrice _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
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