gallium: add void *user_buffer to pipe_constant_buffer

This reduces CPU overhead when updating constants.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeonsi/r600_state_common.c b/src/gallium/drivers/radeonsi/r600_state_common.c
index 05a201ce3bc..63c07420915 100644
--- a/src/gallium/drivers/radeonsi/r600_state_common.c
+++ b/src/gallium/drivers/radeonsi/r600_state_common.c
@@ -439,6 +439,12 @@ void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint index,
 		return;
 	}
 
+        if (cb->user_buffer) {
+           rbuffer = pipe_user_buffer_create(ctx->screen, cb->user_buffer,
+                                         cb->buffer_size,
+                                         PIPE_BIND_CONSTANT_BUFFER);
+        }
+
 	r600_inval_shader_cache(rctx);
 
 	r600_upload_const_buffer(rctx, &rbuffer, &offset);