llvmpipe: don't support scaled formats outside vertex buffers

Scaled formats are usually only needed as vertex buffer formats,
don't expose them as supported for other things.

Lavapipe will use this to export the correct formats support.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8907>

diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index b2672c583672bd9fe552f9123b3485c39ae4baeb..ce487b75b61e791f2e283fb56134d55c16312c00 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -678,6 +678,10 @@ llvmpipe_is_format_supported( struct pipe_screen *_screen,
       }
    }
 
+   if (!(bind & PIPE_BIND_VERTEX_BUFFER) &&
+       util_format_is_scaled(format))
+      return false;
+
    if (bind & PIPE_BIND_DISPLAY_TARGET) {
       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
          return false;