diff options
Diffstat (limited to 'src/gallium/drivers/freedreno/freedreno_resource.c')
| -rw-r--r-- | src/gallium/drivers/freedreno/freedreno_resource.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/freedreno_resource.c b/src/gallium/drivers/freedreno/freedreno_resource.c index 30ef1965d3f..63908f994f2 100644 --- a/src/gallium/drivers/freedreno/freedreno_resource.c +++ b/src/gallium/drivers/freedreno/freedreno_resource.c @@ -50,6 +50,14 @@ /* XXX this should go away, needed for 'struct winsys_handle' */ #include "state_tracker/drm_driver.h" +/* A private modifier for now, so we have a way to request tiled but not + * compressed. It would perhaps be good to get real modifiers for the + * tiled formats, but would probably need to do some work to figure out + * the layout(s) of the tiled modes, and whether they are the same + * across generations. + */ +#define FD_FORMAT_MOD_QCOM_TILED fourcc_mod_code(QCOM, 0xffffffff) + /** * Go through the entire state and see if the resource is bound * anywhere. If it is, mark the relevant state as dirty. This is @@ -304,6 +312,34 @@ fd_try_shadow_resource(struct fd_context *ctx, struct fd_resource *rsc, return true; } +/** + * Uncompress an UBWC compressed buffer "in place". This works basically + * like resource shadowing, creating a new resource, and doing an uncompress + * blit, and swapping the state between shadow and original resource so it + * appears to the state tracker as if nothing changed. + */ +void +fd_resource_uncompress(struct fd_context *ctx, struct fd_resource *rsc) +{ + bool success = + fd_try_shadow_resource(ctx, rsc, 0, NULL, FD_FORMAT_MOD_QCOM_TILED); + + /* shadow should not fail in any cases where we need to uncompress: */ + debug_assert(success); + + /* + * TODO what if rsc is used in other contexts, we don't currently + * have a good way to rebind_resource() in other contexts. And an + * app that is reading one resource in multiple contexts, isn't + * going to expect that the resource is modified. + * + * Hopefully the edge cases where we need to uncompress are rare + * enough that they mostly only show up in deqp. + */ + + rebind_resource(ctx, &rsc->base); +} + static struct fd_resource * fd_alloc_staging(struct fd_context *ctx, struct fd_resource *rsc, unsigned level, const struct pipe_box *box) |