commit fd7e1ed86d856cc4bb12bf550ef43e1cb81d0c0c
author Charmaine Lee <charmainel@vmware.com> Thu Aug 20 15:45:47 2020 -0700
committer Marge Bot <eric+marge@anholt.net> Fri Aug 21 18:14:06 2020 +0000
tree 7d07c88b6e0ef1a553e7eaa1e7ea75a2058acb32
parent f41848a9df3c6eb81059edfd63347584790e0a3a

svga: fix draw elements with 8-bits indices

With commit 2122b902b80, u_index_translator can return U_TRANSLATE_MEMCPY
for 8-bits indices, and in this case we need to call the translation function
instead of a simple passthrough to the device.

Fixes piglit spec@nv_primitive_restart tests.

Fixes: 2122b902b8 "gallium/indices: don't expand prim-type for 8-bit indices"

Reviewed-by: Neha Bhende <bhenden@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6414>

src/gallium/drivers/svga/svga_draw_elements.c

diff --git a/src/gallium/drivers/svga/svga_draw_elements.c b/src/gallium/drivers/svga/svga_draw_elements.c
index b17fe44..dd977b1 100644
--- a/src/gallium/drivers/svga/svga_draw_elements.c
+++ b/src/gallium/drivers/svga/svga_draw_elements.c
@@ -254,7 +254,7 @@
                                     &gen_prim, &gen_size, &gen_nr, &gen_func);
    }
 
-   if (gen_type == U_TRANSLATE_MEMCPY) {
+   if ((gen_type == U_TRANSLATE_MEMCPY) && (info->index_size == gen_size)) {
       /* No need for translation, just pass through to hardware:
        */
       unsigned start_offset = info->start * info->index_size;