[Mesa-dev] [PATCH 03/15] i965: Skip texture validation for immutable-format textures.

[Chris Forbes]

We're about to start sharing miptrees in texture views, and I'd rather
not teach this validation code about nonzero MinLevel or MinLayer when
views are guaranteed complete [and all levels resident in the base
miptree].

The only thing we have to do is set up our _MaxLevel derived state.

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 src/mesa/drivers/dri/i965/intel_tex_validate.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_tex_validate.c b/src/mesa/drivers/dri/i965/intel_tex_validate.c
index d8497a6..c8e1afb 100644
--- a/src/mesa/drivers/dri/i965/intel_tex_validate.c
+++ b/src/mesa/drivers/dri/i965/intel_tex_validate.c
@@ -77,6 +77,14 @@ intel_finalize_mipmap_tree(struct brw_context *brw, GLuint unit)
    if (tObj->Target == GL_TEXTURE_BUFFER)
       return true;
 
+   /* Immutable textures require no validation either -- we set up a correct
+    * miptree for them at creation time.
+    */
+   if (tObj->Immutable) {
+      intel_update_max_level(intelObj, sampler);
+      return true;
+   }
+
    /* We know that this is true by now, and if it wasn't, we might have
     * mismatched level sizes and the copies would fail.
     */
-- 
1.8.5.3