[PATCH 1/7] glamor: only use (un)pack_subimage when available

[Matt Turner]

On Mon, Jan 12, 2015 at 6:29 AM, Maarten Lankhorst
<maarten.lankhorst at ubuntu.com> wrote:
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at ubuntu.com>
> ---
>  glamor/glamor.c          |  7 ++++++
>  glamor/glamor_priv.h     |  2 ++
>  glamor/glamor_transfer.c | 55 +++++++++++++++++++++++++++++++-----------------
>  3 files changed, 45 insertions(+), 19 deletions(-)
>
> diff --git a/glamor/glamor.c b/glamor/glamor.c
> index e6e8647..f139680 100644
> --- a/glamor/glamor.c
> +++ b/glamor/glamor.c
> @@ -412,6 +412,13 @@ glamor_init(ScreenPtr screen, unsigned int flags)
>          epoxy_has_gl_extension("GL_ARB_buffer_storage");
>      glamor_priv->has_nv_texture_barrier =
>          epoxy_has_gl_extension("GL_NV_texture_barrier");
> +    glamor_priv->has_unpack_subimage =
> +        glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP ||
> +        epoxy_gl_version() >= 30 ||
> +        epoxy_has_gl_extension("GL_EXT_unpack_subimage");
> +    glamor_priv->has_pack_subimage = /* not defined for GLES 2 */

You could check for NV_pack_subimage here if you care to.

> +        glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP ||
> +        epoxy_gl_version() >= 30;