Image Alignment Issue w/ Some PNG files
#105 ouverte le 11 févr. 2024
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Description
Problem
PNG/JPG files converted from GIF (from this website) has alignment issues when displayed on screen. However, BMP files converted with the same method doesn't have these issues.
Adding glPixelStorei(GL_UNPACK_ALIGNMENT, 1) before glTexImage2D fixes the issue with PNG/JPG files, but breaks BMP files. Also, glPixelStorei(GL_UNPACK_ALIGNMENT, 1) doesn't seems to have any affect on images that are not converted from GIFs.
Demo
PNG w/o glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
PNG w/ glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
BMP w/o glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
BMP w/ glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
Proposed Workaround
Use BMP when converting from GIFs