Am Donnerstag, den 26.05.2016, 10:36 -0400 schrieb Ilia Mirkin: > On Thu, May 26, 2016 at 10:31 AM, Marek Olšák <mar...@gmail.com> wrote: > > On Wed, May 25, 2016 at 3:34 PM, Philipp Zabel <p.za...@pengutronix.de> > > wrote: > >> Am Mittwoch, den 25.05.2016, 09:23 -0400 schrieb Ilia Mirkin: > >>> Iirc invalidate_resource is to allow backend to discard the contents... > >> > >> Thanks, I didn't know that. So this would need a new callback then? > >> Specifically I want to discard a copy in tiled layout that was derived > >> from a linear external texture previously. > > > > FWIW, radeon drivers don't change the tile mode after a texture has > > been exported. When the texture is exported, the tile mode is set in > > stone, be it linear or tiled. There is no second copy. > > I think what he's saying is that they have a shadow copy of the > texture, and need to know when to update the shadow.
Yes, exactly. I'd like to import a linear dma-buf using EGL_EXT_image_dma_buf_import and GL_OES_EGL_image_external with the etnaviv gallium driver. The linear source buffer needs to be transferred into a shadow copy in tiled layout. The texture samplers can only read from the tiled copy. After the linear source buffer has been modified, binding the texture again must trigger a refresh of the tiled copy somehow. regards Philipp _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
