From: Daniel Stone Date: Tue, 30 May 2017 11:53:48 +0000 (+0530) Subject: i965: Improve same-buffer restriction for imports X-Git-Url: https://git.libre-soc.org/?p=mesa.git;a=commitdiff_plain;h=f58e6358bf775e21d49f7a0ea0007f1940c48217 i965: Improve same-buffer restriction for imports Intel hardware requires that all planes of an image come from the same buffer, which is currently implemented by testing that all FDs are numerically the same. However, when going through a winsys (e.g.) or anything which transits FDs individually, the FDs may be different even if the underlying buffer is the same. Instead of checking the FDs for equality, we must check if they actually point to the same buffer (Jason). Reviewed-by: Varad Gautam Reviewed-by: Jason Ekstrand --- diff --git a/src/mesa/drivers/dri/i965/intel_screen.c b/src/mesa/drivers/dri/i965/intel_screen.c index 96f30168127..638a9b080bd 100644 --- a/src/mesa/drivers/dri/i965/intel_screen.c +++ b/src/mesa/drivers/dri/i965/intel_screen.c @@ -841,11 +841,6 @@ intel_create_image_from_fds(__DRIscreen *dri_screen, if (fds == NULL || num_fds < 1) return NULL; - /* We only support all planes from the same bo */ - for (i = 0; i < num_fds; i++) - if (fds[0] != fds[i]) - return NULL; - f = intel_image_format_lookup(fourcc); if (f == NULL) return NULL; @@ -872,6 +867,19 @@ intel_create_image_from_fds(__DRIscreen *dri_screen, return NULL; } + /* We only support all planes from the same bo. + * brw_bo_gem_create_from_prime() should return the same pointer for all + * fds received here */ + for (i = 1; i < num_fds; i++) { + struct brw_bo *aux = brw_bo_gem_create_from_prime(screen->bufmgr, fds[i]); + brw_bo_unreference(aux); + if (aux != image->bo) { + brw_bo_unreference(image->bo); + free(image); + return NULL; + } + } + image->modifier = tiling_to_modifier(image->bo->tiling_mode); tiled_height = get_tiled_height(image->modifier, height);