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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 <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Owen Taylor 2008-11-03 14:38:17 -08:00 committed by Dave Airlie
parent ad42ca8f44
commit 6a47baa6ce
1 changed files with 3 additions and 5 deletions
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8
drivers/gpu/drm/i915/i915_gem.c
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@ -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,