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-rw-r--r--src/mesa/drivers/dri/i965/intel_tex_validate.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_tex_validate.c b/src/mesa/drivers/dri/i965/intel_tex_validate.c
index 0bf0393803f..1d827683b99 100644
--- a/src/mesa/drivers/dri/i965/intel_tex_validate.c
+++ b/src/mesa/drivers/dri/i965/intel_tex_validate.c
@@ -98,10 +98,17 @@ intel_finalize_mipmap_tree(struct brw_context *brw, GLuint unit)
return true;
}
- /* Immutable textures should not get this far -- they should have been
- * created in a validated state, and nothing can invalidate them.
+ /* On recent generations, immutable textures should not get this far
+ * -- they should have been created in a validated state, and nothing
+ * can invalidate them.
+ *
+ * Unfortunately, this is not true on pre-Sandybridge hardware -- when
+ * rendering into an immutable-format depth texture we may have to rebase
+ * the rendered levels to meet alignment requirements.
+ *
+ * FINISHME: Avoid doing this.
*/
- assert(!tObj->Immutable);
+ assert(!tObj->Immutable || brw->gen < 6);
firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);