gallium: add writable_bitmask parameter into set_shader_buffers

to indicate write usage per buffer.
This is just a hint (it will be used by radeonsi).

Reviewed-by: Timothy Arceri <[email protected]>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h
index 5c62ed49fa7..b8192505a39 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -352,11 +352,14 @@ struct pipe_context {
     *                   should contain at least \a count elements
     *                   unless it's NULL, in which case no buffers will
     *                   be bound.
+    * \param writable_bitmask  If bit i is not set, buffers[i] will only be
+    *                          used with loads. If unsure, set to ~0.
     */
    void (*set_shader_buffers)(struct pipe_context *,
                               enum pipe_shader_type shader,
                               unsigned start_slot, unsigned count,
-                              const struct pipe_shader_buffer *buffers);
+                              const struct pipe_shader_buffer *buffers,
+                              unsigned writable_bitmask);
 
    /**
     * Bind an array of hw atomic buffers for use by all shaders.