Carlos Garnacho 2f260edf19 cogl: Read pixels as per the stored format ...

By the looks of it, commit 95e9fa10ef was taping over an Intel DRI bug
that would make it return post-swizzling pixel data on glReadPixels().
There's been reports over time of that commit resulting in wrong colors
on other drivers, and lately Mesa >17.3 started showing the same symptoms
on Intel.

But texture swizzling works by changing parameters before fragment shaders
and reading pixels from an already drawn FBO/texture doesn't involve those.
This should thus use pixel_format_to_gl_with_target(), which will result in
correctly requesting the same pixel format than the underlying texture,
while still considering it BGRA for the upper layers in the swizzling case.

https://gitlab.gnome.org/GNOME/mutter/issues/72

Closes: #72

2018-03-21 18:45:20 +00:00

..

gl

cogl: Read pixels as per the stored format

2018-03-21 18:45:20 +00:00

nop

cogl: Add pixel_format_to_gl_with_target driver vfunc

2017-03-07 13:40:06 +01:00