st/mesa/i965: Allow decompressing ETC2 to GL_RGBA

When Mesa itself implements ETC2 decompression, it currently
decompresses to formats in the GL_BGRA component order.

That can be problematic for drivers which cannot upload the texture data
as GL_BGRA, such as Virgl when it's backed by GLES on the host.

So this commit adds a flag to _mesa_unpack_etc2_format so callers can
specify the optimal component order.

In Gallium's case, it will be requested if the format isn't in
PIPE_FORMAT_B8G8R8A8_SRGB format.

For i965, it will remain GL_BGRA, as before.

v2: * Remove unnecesary include (Emil Velikov)

Signed-off-by: Tomeu Vizoso <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 6b89bf6848a..4a61cee08b5 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -3356,7 +3356,7 @@ intel_miptree_unmap_etc(struct brw_context *brw,
    else
       _mesa_unpack_etc2_format(dst, mt->surf.row_pitch,
                                map->ptr, map->stride,
-                               map->w, map->h, mt->etc_format);
+			       map->w, map->h, mt->etc_format, true);
 
    intel_miptree_unmap_raw(mt);
    free(map->buffer);