From: Owen Taylor Date: Mon, 3 Nov 2008 22:38:17 +0000 (-0800) Subject: i915: Don't attempt to short-circuit object_wait_rendering by checking domains. X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6a47baa6ce7e6fb5fed8d1fd0af36a96a4ad133f;p=deliverable%2Flinux.git i915: Don't attempt to short-circuit object_wait_rendering by checking domains. This could return early when reading after writing a buffer, if somebody had already put it on the flushing list (write domains are 0, but still active), leading to glReadPixels failure. Signed-off-by: Eric Anholt Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index b0ec73fa6a93..6b4a2bd20640 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1455,11 +1455,9 @@ i915_gem_object_set_domain_range(struct drm_gem_object *obj, read_domains, write_domain); /* Wait on any GPU rendering to the object to be flushed. */ - if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) { - ret = i915_gem_object_wait_rendering(obj); - if (ret) - return ret; - } + ret = i915_gem_object_wait_rendering(obj); + if (ret) + return ret; if (obj_priv->page_cpu_valid == NULL) { obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE,