summaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary
diff options
context:
space:
mode:
authorMarek Olšák <[email protected]>2015-12-19 16:44:52 +0100
committerMarek Olšák <[email protected]>2016-01-02 15:15:44 +0100
commitffc4716e9730ca162ce5dfcf0298125269c6d908 (patch)
tree37571ed7bcc236998dc969ab82e11529a9c1871e /src/gallium/auxiliary
parent36c93a6fae275614b6004ec5ab085774d527e1bc (diff)
u_upload_mgr: rework the application of alignment
The function only aligned the size, but not the offset. The offset was aligned only when the previous suballocation was aligned. That yielded the correct offset alignment if the alignment was constant for all suballocations. Instead, directly align the offset, but allow an unaligned size. There is no change in behavior, because the alignment is constant at the moment. This a prerequisite for allowing a variable alignment for suballocations. Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r--src/gallium/auxiliary/util/u_upload_mgr.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/src/gallium/auxiliary/util/u_upload_mgr.c b/src/gallium/auxiliary/util/u_upload_mgr.c
index b672fad6bf0..4148bae5ab5 100644
--- a/src/gallium/auxiliary/util/u_upload_mgr.c
+++ b/src/gallium/auxiliary/util/u_upload_mgr.c
@@ -185,15 +185,20 @@ u_upload_alloc(struct u_upload_mgr *upload,
struct pipe_resource **outbuf,
void **ptr)
{
- unsigned alloc_size = align(size, upload->alignment);
- unsigned alloc_offset = align(min_out_offset, upload->alignment);
+ unsigned alignment = upload->alignment;
unsigned buffer_size = upload->buffer ? upload->buffer->width0 : 0;
unsigned offset;
+ min_out_offset = align(min_out_offset, alignment);
+
+ offset = align(upload->offset, alignment);
+ offset = MAX2(offset, min_out_offset);
+
/* Make sure we have enough space in the upload buffer
- * for the sub-allocation. */
- if (unlikely(MAX2(upload->offset, alloc_offset) + alloc_size > buffer_size)) {
- u_upload_alloc_buffer(upload, alloc_offset + alloc_size);
+ * for the sub-allocation.
+ */
+ if (unlikely(!upload->buffer || offset + size > buffer_size)) {
+ u_upload_alloc_buffer(upload, min_out_offset + size);
if (unlikely(!upload->buffer)) {
*out_offset = ~0;
@@ -202,11 +207,10 @@ u_upload_alloc(struct u_upload_mgr *upload,
return;
}
+ offset = min_out_offset;
buffer_size = upload->buffer->width0;
}
- offset = MAX2(upload->offset, alloc_offset);
-
if (unlikely(!upload->map)) {
upload->map = pipe_buffer_map_range(upload->pipe, upload->buffer,
offset,
@@ -224,8 +228,8 @@ u_upload_alloc(struct u_upload_mgr *upload,
upload->map -= offset;
}
- assert(offset < upload->buffer->width0);
- assert(offset + size <= upload->buffer->width0);
+ assert(offset < buffer_size);
+ assert(offset + size <= buffer_size);
assert(size);
/* Emit the return values: */
@@ -233,7 +237,7 @@ u_upload_alloc(struct u_upload_mgr *upload,
pipe_resource_reference(outbuf, upload->buffer);
*out_offset = offset;
- upload->offset = offset + alloc_size;
+ upload->offset = offset + size;
}
void u_upload_data(struct u_upload_mgr *upload,