gallium: add sparse buffer interface and capability

[mesa.git] / src / gallium / drivers / nouveau / nouveau_buffer.c

diff --git a/src/gallium/drivers/nouveau/nouveau_buffer.c b/src/gallium/drivers/nouveau/nouveau_buffer.c
index 68e69beb08f93005cd377ab0a845d9da20be9b0f..17052b26e9c8efbd8b518052958de2338bc28a97 100644 (file)
--- a/src/gallium/drivers/nouveau/nouveau_buffer.c
+++ b/src/gallium/drivers/nouveau/nouveau_buffer.c
@@ -163,7 +163,7 @@ nouveau_transfer_staging(struct nouveau_context *nv,
    return tx->map;
 }
 
-/* Copies data from the resource into the the transfer's temporary GART
+/* Copies data from the resource into the transfer's temporary GART
  * buffer. Also updates buf->data if present.
  *
  * Maybe just migrate to GART right away if we actually need to do this. */
@@ -634,7 +634,6 @@ const struct u_resource_vtbl nouveau_buffer_vtbl =
    nouveau_buffer_transfer_map,          /* transfer_map */
    nouveau_buffer_transfer_flush_region, /* transfer_flush_region */
    nouveau_buffer_transfer_unmap,        /* transfer_unmap */
-   u_default_transfer_inline_write    /* transfer_inline_write */
 };
 
 struct pipe_resource *
@@ -657,8 +656,8 @@ nouveau_buffer_create(struct pipe_screen *pscreen,
    if (buffer->base.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
                              PIPE_RESOURCE_FLAG_MAP_COHERENT)) {
       buffer->domain = NOUVEAU_BO_GART;
-   } else if (buffer->base.bind &
-              (screen->vidmem_bindings & screen->sysmem_bindings)) {
+   } else if (buffer->base.bind == 0 || (buffer->base.bind &
+              (screen->vidmem_bindings & screen->sysmem_bindings))) {
       switch (buffer->base.usage) {
       case PIPE_USAGE_DEFAULT:
       case PIPE_USAGE_IMMUTABLE:
@@ -685,6 +684,7 @@ nouveau_buffer_create(struct pipe_screen *pscreen,
       if (buffer->base.bind & screen->sysmem_bindings)
          buffer->domain = NOUVEAU_BO_GART;
    }
+
    ret = nouveau_buffer_allocate(screen, buffer, buffer->domain);
 
    if (ret == false)
@@ -839,6 +839,39 @@ nouveau_user_buffer_upload(struct nouveau_context *nv,
    return true;
 }
 
+/* Invalidate underlying buffer storage, reset fences, reallocate to non-busy
+ * buffer.
+ */
+void
+nouveau_buffer_invalidate(struct pipe_context *pipe,
+                          struct pipe_resource *resource)
+{
+   struct nouveau_context *nv = nouveau_context(pipe);
+   struct nv04_resource *buf = nv04_resource(resource);
+   int ref = buf->base.reference.count - 1;
+
+   /* Shared buffers shouldn't get reallocated */
+   if (unlikely(buf->base.bind & PIPE_BIND_SHARED))
+      return;
+
+   /* We can't touch persistent/coherent buffers */
+   if (buf->base.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
+                          PIPE_RESOURCE_FLAG_MAP_COHERENT))
+      return;
+
+   /* If the buffer is sub-allocated and not currently being written, just
+    * wipe the valid buffer range. Otherwise we have to create fresh
+    * storage. (We don't keep track of fences for non-sub-allocated BO's.)
+    */
+   if (buf->mm && !nouveau_buffer_busy(buf, PIPE_TRANSFER_WRITE)) {
+      util_range_set_empty(&buf->valid_buffer_range);
+   } else {
+      nouveau_buffer_reallocate(nv->screen, buf, buf->domain);
+      if (ref > 0) /* any references inside context possible ? */
+         nv->invalidate_resource_storage(nv, &buf->base, ref);
+   }
+}
+
 
 /* Scratch data allocation. */