st/mesa: add double input support including lowering (v3.1)

This takes a different approach to previously, we cannot index into the
inputMapping with anything but the mesa attribute index, so we can't use
the just add one to index trick, we need more info to add one to it
after we've mapped the input.

(Fixed copy propgation and cleaned up a little)

v2: drop float64 format check, just attr->Doubles.
merge enable patch.
v3: cleanup code a bit.
v3.1: minor review fixups (comment, newline) (Ilia)

Reviewed-by: Ilia Mirkin <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 82e4a30093f..b1057f3eadd 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -909,6 +909,8 @@ void st_init_extensions(struct pipe_screen *screen,
    if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
                                 PIPE_SHADER_CAP_DOUBLES) &&
        screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
-                                PIPE_SHADER_CAP_DOUBLES))
+                                PIPE_SHADER_CAP_DOUBLES)) {
       extensions->ARB_gpu_shader_fp64 = GL_TRUE;
+      extensions->ARB_vertex_attrib_64bit = GL_TRUE;
+   }
 }