1 files changed, 114 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_transfer.c b/mesalib/src/gallium/auxiliary/util/u_transfer.c
new file mode 100644
index 000000000..772b6d269
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_transfer.c
@@ -0,0 +1,114 @@
+#include "pipe/p_context.h"
+#include "util/u_rect.h"
+#include "util/u_inlines.h"
+#include "util/u_transfer.h"
+#include "util/u_memory.h"
+
+/* One-shot transfer operation with data supplied in a user
+ * pointer.  XXX: strides??
+ */
+void u_default_transfer_inline_write( struct pipe_context *pipe,
+                                      struct pipe_resource *resource,
+                                      unsigned level,
+                                      unsigned usage,
+                                      const struct pipe_box *box,
+                                      const void *data,
+                                      unsigned stride,
+                                      unsigned layer_stride)
+{
+   struct pipe_transfer *transfer = NULL;
+   uint8_t *map = NULL;
+   const uint8_t *src_data = data;
+   unsigned i;
+
+   transfer = pipe->get_transfer(pipe,
+                                 resource,
+                                 level,
+                                 usage,
+                                 box );
+   if (transfer == NULL)
+      goto out;
+
+   map = pipe_transfer_map(pipe, transfer);
+   if (map == NULL)
+      goto out;
+
+   for (i = 0; i < box->depth; i++) {
+      util_copy_rect(map,
+                     resource->format,
+                     transfer->stride, /* bytes */
+                     0, 0,
+                     box->width,
+                     box->height,
+                     src_data,
+                     stride,       /* bytes */
+                     0, 0);
+      map += transfer->layer_stride;
+      src_data += layer_stride;
+   }
+
+out:
+   if (map)
+      pipe_transfer_unmap(pipe, transfer);
+
+   if (transfer)
+      pipe_transfer_destroy(pipe, transfer);
+}
+
+
+boolean u_default_resource_get_handle(struct pipe_screen *screen,
+                                      struct pipe_resource *resource,
+                                      struct winsys_handle *handle)
+{
+   return FALSE;
+}
+
+
+
+void u_default_transfer_flush_region( struct pipe_context *pipe,
+                                      struct pipe_transfer *transfer,
+                                      const struct pipe_box *box)
+{
+   /* This is a no-op implementation, nothing to do.
+    */
+}
+
+struct pipe_transfer * u_default_get_transfer(struct pipe_context *context,
+                                              struct pipe_resource *resource,
+                                              unsigned level,
+                                              unsigned usage,
+                                              const struct pipe_box *box)
+{
+   struct pipe_transfer *transfer = CALLOC_STRUCT(pipe_transfer);
+   if (transfer == NULL)
+      return NULL;
+
+   transfer->resource = resource;
+   transfer->level = level;
+   transfer->usage = usage;
+   transfer->box = *box;
+
+   /* Note strides are zero, this is ok for buffers, but not for
+    * textures 2d & higher at least. 
+    */
+   return transfer;
+}
+
+void u_default_transfer_unmap( struct pipe_context *pipe,
+                               struct pipe_transfer *transfer )
+{
+}
+
+void u_default_transfer_destroy(struct pipe_context *pipe,
+                                struct pipe_transfer *transfer)
+{
+   FREE(transfer);
+}
+
+void u_default_redefine_user_buffer(struct pipe_context *ctx,
+                                    struct pipe_resource *resource,
+                                    unsigned offset,
+                                    unsigned size)
+{
+   resource->width0 = MAX2(resource->width0, offset + size);
+}