2021年2月19日(金) 23:14 Gerd Hoffmann <kra...@redhat.com>: > > On Fri, Feb 19, 2021 at 06:48:03PM +0900, Akihiko Odaki wrote: > > OpenGL ES does not support conversion from the given data format > > to the internal format with glTexImage2D. > > > > Use the given data format as the internal format, and ignore > > the given alpha channels with GL_TEXTURE_SWIZZLE_A in case the > > format contains alpha channels. > > Hmm. Do you know what effect this has performance-wise? > Is it maybe useful to not convert for desktop gl too?
I have no idea about performance, but I am concerned about compatibility. OpenGL 4.6 core profile does not support GL_BGRA, which is aliased as GL_BGRA_EXT by epoxy, as internalformat. I also tested with Intel HD Graphics 3000/Mesa 20.3.4 but it didn't work. > > take care, > Gerd >
