i965: Fix the last valid address setting for the index buffer.

Again, last valid address, not first invalid address.  Fixes regression
in 255e5be265133280293bbfd8b2f9b74b2dec50bb that the kernel now catches
and caused piglit draw_elements_base_vertex to fail.

diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c
index 5c33246749897ab6c087a987ed1fb78d892738e1..9d089e113e6f5606800d1ba9803b3164c347d24b 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c
@@ -726,7 +726,7 @@ static void brw_emit_index_buffer(struct brw_context *brw)
                brw->ib.offset);
       OUT_RELOC(brw->ib.bo,
                I915_GEM_DOMAIN_VERTEX, 0,
-               brw->ib.offset + brw->ib.size);
+               brw->ib.offset + brw->ib.size - 1);
       OUT_BATCH( 0 );
       ADVANCE_BATCH();
    }