From: Marek Olšák <marek.olsak@amd.com>
Date: Wed, 15 Feb 2017 00:47:25 +0000 (+0100)
Subject: gallium/u_suballoc: use clear_buffer if available
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=edf6bcf6c633c74f7df6a716ae9ac0d7de054766;p=mesa.git

gallium/u_suballoc: use clear_buffer if available

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
---

diff --git a/src/gallium/auxiliary/util/u_suballoc.c b/src/gallium/auxiliary/util/u_suballoc.c
index 5aaddbcb55c..8c463c9fdd0 100644
--- a/src/gallium/auxiliary/util/u_suballoc.c
+++ b/src/gallium/auxiliary/util/u_suballoc.c
@@ -105,13 +105,20 @@ u_suballocator_alloc(struct u_suballocator *allocator, unsigned size,
 
       /* Clear the memory if needed. */
       if (allocator->zero_buffer_memory) {
-         struct pipe_transfer *transfer = NULL;
-         void *ptr;
-
-         ptr = pipe_buffer_map(allocator->pipe, allocator->buffer,
-			       PIPE_TRANSFER_WRITE, &transfer);
-         memset(ptr, 0, allocator->size);
-         pipe_buffer_unmap(allocator->pipe, transfer);
+         struct pipe_context *pipe = allocator->pipe;
+
+         if (pipe->clear_buffer) {
+            unsigned clear_value = 0;
+
+            pipe->clear_buffer(pipe, allocator->buffer, 0, allocator->size,
+                               &clear_value, 4);
+         } else {
+            struct pipe_transfer *transfer = NULL;
+            void *ptr = pipe_buffer_map(pipe, allocator->buffer,
+                                        PIPE_TRANSFER_WRITE, &transfer);
+            memset(ptr, 0, allocator->size);
+            pipe_buffer_unmap(pipe, transfer);
+         }
       }
    }