Сan't erase 1 pixel

[fortey]

drawpixels.pixel(self.buffer_info, self.touch_pos.x, self.touch_pos.y, 0, 0, 0, 0) doesn't work

[AGulev]

could you pls provide a test project?

[Morgerion]

Indeed, it does not work, since if alpha==0 then the pixel is not recorded. This follows from the code of the mixpixel() function.
It would be nice to have a function like pixel_raw() that just writes RGBA without any alpha channel checks.
I use this to fill technical textures where the alpha channel is just one of the data layers.