Am Montag, den 05.11.2018, 17:00 -0500 schrieb Marek Olšák: > At the Gallium level, you can change between UNORM and SRGB in > pipe_surface. If you allocate a texture as SRGB, you should be able > to use it as LINEAR and vice versa. > > All hardware that supports both LINEAR and SRGB supports this. A > typical hw driver does that simply by changing the format in the > framebuffer state. The problem is that with virglrenderer I have to rely on the OpenGL host interface to do this and on a GLES host it is not supported to simply switch a format from sRGB to linear in a framebuffer attachment (unless you have EXT_sRGB_write_control there)¹. In that sense virglrenderer running on such a GLES host can be seen as a peculiar piece of hardware that is not (yet) covered by the current Gallium implementation.
Best, Gert ¹I guess it would be possible to emulate this by copying the data to another surface using sRGB_skip_decode etc, but it is not really an aim to expose something in the guest that can only be emulated by costly copying on the host. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
