[Mesa-dev] [PATCH 84/84 v4] st/nine: Implement new buffer upload path
Axel Davy
axel.davy at ens.fr
Tue Dec 13 23:27:14 UTC 2016
This new buffer upload path enables to lock
faster than the normal path when using
DISCARD/NOOVERWRITE.
v2: Diverse cleanups and fixes.
v3: Fix allocation size for 'lone' buffers and
add more debug info.
v4: Rewrite of the path to handle when DISCARD/NOOVERWRITE
is not used anymore. The resource content is copied to the
new resource used.
Signed-off-by: Axel Davy <axel.davy at ens.fr>
---
Still open for comments.
src/gallium/state_trackers/nine/Makefile.sources | 2 +
src/gallium/state_trackers/nine/buffer9.c | 90 ++++++-
src/gallium/state_trackers/nine/buffer9.h | 9 +-
src/gallium/state_trackers/nine/device9.c | 5 +
src/gallium/state_trackers/nine/device9.h | 3 +
src/gallium/state_trackers/nine/indexbuffer9.c | 10 +-
src/gallium/state_trackers/nine/indexbuffer9.h | 2 -
.../state_trackers/nine/nine_buffer_upload.c | 293 +++++++++++++++++++++
.../state_trackers/nine/nine_buffer_upload.h | 59 +++++
src/gallium/state_trackers/nine/vertexbuffer9.c | 3 +-
10 files changed, 455 insertions(+), 21 deletions(-)
create mode 100644 src/gallium/state_trackers/nine/nine_buffer_upload.c
create mode 100644 src/gallium/state_trackers/nine/nine_buffer_upload.h
diff --git a/src/gallium/state_trackers/nine/Makefile.sources b/src/gallium/state_trackers/nine/Makefile.sources
index 2bb08a2..56698a1 100644
--- a/src/gallium/state_trackers/nine/Makefile.sources
+++ b/src/gallium/state_trackers/nine/Makefile.sources
@@ -23,6 +23,8 @@ C_SOURCES := \
indexbuffer9.h \
iunknown.c \
iunknown.h \
+ nine_buffer_upload.c \
+ nine_buffer_upload.h \
nine_csmt_helper.h \
nine_debug.c \
nine_debug.h \
diff --git a/src/gallium/state_trackers/nine/buffer9.c b/src/gallium/state_trackers/nine/buffer9.c
index f9d3f99..479f1fb 100644
--- a/src/gallium/state_trackers/nine/buffer9.c
+++ b/src/gallium/state_trackers/nine/buffer9.c
@@ -23,6 +23,7 @@
#include "buffer9.h"
#include "device9.h"
+#include "nine_buffer_upload.h"
#include "nine_helpers.h"
#include "nine_pipe.h"
@@ -100,6 +101,9 @@ NineBuffer9_ctor( struct NineBuffer9 *This,
else
info->usage = PIPE_USAGE_DYNAMIC;
+ /* When Writeonly is not set, we don't want to enable the
+ * optimizations */
+ This->discard_nooverwrite_only = !!(Usage & D3DUSAGE_WRITEONLY);
/* if (pDesc->Usage & D3DUSAGE_DONOTCLIP) { } */
/* if (pDesc->Usage & D3DUSAGE_NONSECURE) { } */
/* if (pDesc->Usage & D3DUSAGE_NPATCHES) { } */
@@ -161,12 +165,18 @@ NineBuffer9_dtor( struct NineBuffer9 *This )
list_del(&This->managed.list2);
}
+ if (This->buf)
+ nine_upload_release_buffer(This->base.base.device->buffer_upload, This->buf);
+
NineResource9_dtor(&This->base);
}
struct pipe_resource *
-NineBuffer9_GetResource( struct NineBuffer9 *This )
+NineBuffer9_GetResource( struct NineBuffer9 *This, unsigned *offset )
{
+ if (This->buf)
+ return nine_upload_buffer_resource_and_offset(This->buf, offset);
+ *offset = 0;
return NineResource9_GetResource(&This->base);
}
@@ -264,6 +274,8 @@ NineBuffer9_Lock( struct NineBuffer9 *This,
if (Flags & D3DLOCK_DONOTWAIT && !(This->base.usage & D3DUSAGE_DYNAMIC))
usage |= PIPE_TRANSFER_DONTBLOCK;
+ This->discard_nooverwrite_only &= !!(Flags & (D3DLOCK_DISCARD | D3DLOCK_NOOVERWRITE));
+
if (This->nmaps == This->maxmaps) {
struct NineTransfer *newmaps =
REALLOC(This->maps, sizeof(struct NineTransfer)*This->maxmaps,
@@ -275,8 +287,67 @@ NineBuffer9_Lock( struct NineBuffer9 *This,
This->maps = newmaps;
}
- This->maps[This->nmaps].is_pipe_secondary = FALSE;
+ if (This->buf && !This->discard_nooverwrite_only) {
+ struct pipe_box src_box;
+ unsigned offset;
+ struct pipe_resource *src_res;
+ DBG("Disabling nine_subbuffer for a buffer having"
+ "used a nine_subbuffer buffer\n");
+ /* Copy buffer content to the buffer resource, which
+ * we will now use.
+ * Note: The behaviour may be different from what is expected
+ * with double lock. However applications can't really make expectations
+ * about double locks, and don't really use them, so that's ok. */
+ src_res = nine_upload_buffer_resource_and_offset(This->buf, &offset);
+ u_box_1d(offset, This->size, &src_box);
+
+ pipe = NineDevice9_GetPipe(device);
+ pipe->resource_copy_region(pipe, This->base.resource, 0, 0, 0, 0,
+ src_res, 0, &src_box);
+ /* Release previous resource */
+ if (This->nmaps >= 1)
+ This->maps[This->nmaps-1].should_destroy_buf = true;
+ else
+ nine_upload_release_buffer(device->buffer_upload, This->buf);
+ This->buf = NULL;
+ /* Rebind buffer */
+ NineBuffer9_RebindIfRequired(This, device);
+ }
+
+ This->maps[This->nmaps].transfer = NULL;
+ This->maps[This->nmaps].is_pipe_secondary = false;
+ This->maps[This->nmaps].buf = NULL;
+ This->maps[This->nmaps].should_destroy_buf = false;
+
+ if (This->discard_nooverwrite_only) {
+ if (This->buf && (Flags & D3DLOCK_DISCARD)) {
+ /* Release previous buffer */
+ if (This->nmaps >= 1)
+ This->maps[This->nmaps-1].should_destroy_buf = true;
+ else
+ nine_upload_release_buffer(device->buffer_upload, This->buf);
+ This->buf = NULL;
+ }
+
+ if (!This->buf) {
+ This->buf = nine_upload_create_buffer(device->buffer_upload, This->base.info.width0);
+ NineBuffer9_RebindIfRequired(This, device);
+ }
+
+ if (This->buf) {
+ This->maps[This->nmaps].buf = This->buf;
+ This->nmaps++;
+ *ppbData = nine_upload_buffer_get_map(This->buf) + OffsetToLock;
+ return D3D_OK;
+ } else {
+ /* Fallback to normal path, and don't try again */
+ This->discard_nooverwrite_only = false;
+ }
+ }
+ /* When csmt is active, we want to avoid stalls as much as possible,
+ * and thus we want to create a new resource on discard and map it
+ * with the secondary pipe, instead of waiting on the main pipe. */
if (Flags & D3DLOCK_DISCARD && device->csmt_active) {
struct pipe_screen *screen = NineDevice9_GetScreen(device);
struct pipe_resource *new_res = screen->resource_create(screen, &This->base.info);
@@ -328,12 +399,15 @@ NineBuffer9_Unlock( struct NineBuffer9 *This )
user_assert(This->nmaps > 0, D3DERR_INVALIDCALL);
This->nmaps--;
if (This->base.pool != D3DPOOL_MANAGED) {
- pipe = This->maps[This->nmaps].is_pipe_secondary ?
- device->pipe_secondary :
- nine_context_get_pipe_acquire(device);
- pipe->transfer_unmap(pipe, This->maps[This->nmaps].transfer);
- if (!This->maps[This->nmaps].is_pipe_secondary)
- nine_context_get_pipe_release(device);
+ if (!This->maps[This->nmaps].buf) {
+ pipe = This->maps[This->nmaps].is_pipe_secondary ?
+ device->pipe_secondary :
+ nine_context_get_pipe_acquire(device);
+ pipe->transfer_unmap(pipe, This->maps[This->nmaps].transfer);
+ if (!This->maps[This->nmaps].is_pipe_secondary)
+ nine_context_get_pipe_release(device);
+ } else if (This->maps[This->nmaps].should_destroy_buf)
+ nine_upload_release_buffer(device->buffer_upload, This->maps[This->nmaps].buf);
} else {
BASEBUF_REGISTER_UPDATE(This);
}
diff --git a/src/gallium/state_trackers/nine/buffer9.h b/src/gallium/state_trackers/nine/buffer9.h
index e9ee31e..b04a0a7 100644
--- a/src/gallium/state_trackers/nine/buffer9.h
+++ b/src/gallium/state_trackers/nine/buffer9.h
@@ -25,6 +25,7 @@
#define _NINE_BUFFER9_H_
#include "device9.h"
+#include "nine_buffer_upload.h"
#include "nine_state.h"
#include "resource9.h"
#include "pipe/p_context.h"
@@ -38,6 +39,8 @@ struct pipe_transfer;
struct NineTransfer {
struct pipe_transfer *transfer;
bool is_pipe_secondary;
+ struct nine_subbuffer *buf; /* NULL unless subbuffer are used */
+ bool should_destroy_buf; /* If the subbuffer should be destroyed */
};
struct NineBuffer9
@@ -50,6 +53,10 @@ struct NineBuffer9
UINT size;
int16_t bind_count; /* to Device9->state.stream */
+ /* Whether only discard and nooverwrite were used so far
+ * for this buffer. Allows some optimization. */
+ boolean discard_nooverwrite_only;
+ struct nine_subbuffer *buf;
/* Specific to managed buffers */
struct {
@@ -79,7 +86,7 @@ void
NineBuffer9_dtor( struct NineBuffer9 *This );
struct pipe_resource *
-NineBuffer9_GetResource( struct NineBuffer9 *This );
+NineBuffer9_GetResource( struct NineBuffer9 *This, unsigned *offset );
HRESULT NINE_WINAPI
NineBuffer9_Lock( struct NineBuffer9 *This,
diff --git a/src/gallium/state_trackers/nine/device9.c b/src/gallium/state_trackers/nine/device9.c
index 91f09de..9a5cfa4 100644
--- a/src/gallium/state_trackers/nine/device9.c
+++ b/src/gallium/state_trackers/nine/device9.c
@@ -34,6 +34,7 @@
#include "texture9.h"
#include "cubetexture9.h"
#include "volumetexture9.h"
+#include "nine_buffer_upload.h"
#include "nine_helpers.h"
#include "nine_pipe.h"
#include "nine_ff.h"
@@ -282,6 +283,8 @@ NineDevice9_ctor( struct NineDevice9 *This,
if (This->csmt_active)
DBG("\033[1;32mCSMT is active\033[0m\n");
+ This->buffer_upload = nine_upload_create(This->pipe_secondary, 4 * 1024 * 1024, 4);
+
/* Initialize a dummy VBO to be used when a vertex declaration does not
* specify all the inputs needed by vertex shader, on win default behavior
* is to pass 0,0,0,0 to the shader */
@@ -571,6 +574,8 @@ NineDevice9_dtor( struct NineDevice9 *This )
FREE(This->swapchains);
}
+ nine_upload_destroy(This->buffer_upload);
+
/* Destroy cso first */
if (This->context.cso) { cso_destroy_context(This->context.cso); }
if (This->cso_sw) { cso_destroy_context(This->cso_sw); }
diff --git a/src/gallium/state_trackers/nine/device9.h b/src/gallium/state_trackers/nine/device9.h
index 81c4ef9..71b88a4 100644
--- a/src/gallium/state_trackers/nine/device9.h
+++ b/src/gallium/state_trackers/nine/device9.h
@@ -63,6 +63,9 @@ struct NineDevice9
struct csmt_context *csmt_ctx;
BOOL csmt_active;
+ /* For DISCARD/NOOVERWRITE */
+ struct nine_buffer_upload *buffer_upload;
+
/* creation parameters */
D3DCAPS9 caps;
D3DDEVICE_CREATION_PARAMETERS params;
diff --git a/src/gallium/state_trackers/nine/indexbuffer9.c b/src/gallium/state_trackers/nine/indexbuffer9.c
index 4029a8d..cbd75fb 100644
--- a/src/gallium/state_trackers/nine/indexbuffer9.c
+++ b/src/gallium/state_trackers/nine/indexbuffer9.c
@@ -49,7 +49,7 @@ NineIndexBuffer9_ctor( struct NineIndexBuffer9 *This,
if (FAILED(hr))
return hr;
- This->buffer.buffer = NineIndexBuffer9_GetResource(This);
+ This->buffer.buffer = NULL;
This->buffer.offset = 0;
switch (pDesc->Format) {
@@ -77,16 +77,10 @@ const struct pipe_index_buffer *
NineIndexBuffer9_GetBuffer( struct NineIndexBuffer9 *This )
{
/* The resource may change */
- This->buffer.buffer = NineIndexBuffer9_GetResource(This);
+ This->buffer.buffer = NineBuffer9_GetResource(&This->base, &This->buffer.offset);
return &This->buffer;
}
-struct pipe_resource *
-NineIndexBuffer9_GetResource( struct NineIndexBuffer9 *This )
-{
- return NineBuffer9_GetResource(&This->base);
-}
-
HRESULT NINE_WINAPI
NineIndexBuffer9_Lock( struct NineIndexBuffer9 *This,
UINT OffsetToLock,
diff --git a/src/gallium/state_trackers/nine/indexbuffer9.h b/src/gallium/state_trackers/nine/indexbuffer9.h
index 4802105..e695082 100644
--- a/src/gallium/state_trackers/nine/indexbuffer9.h
+++ b/src/gallium/state_trackers/nine/indexbuffer9.h
@@ -66,8 +66,6 @@ NineIndexBuffer9_dtor( struct NineIndexBuffer9 *This );
const struct pipe_index_buffer *
NineIndexBuffer9_GetBuffer( struct NineIndexBuffer9 *This );
-struct pipe_resource *
-NineIndexBuffer9_GetResource( struct NineIndexBuffer9 *This );
/*** Direct3D public ***/
HRESULT NINE_WINAPI
diff --git a/src/gallium/state_trackers/nine/nine_buffer_upload.c b/src/gallium/state_trackers/nine/nine_buffer_upload.c
new file mode 100644
index 0000000..72083c7
--- /dev/null
+++ b/src/gallium/state_trackers/nine/nine_buffer_upload.c
@@ -0,0 +1,293 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * Copyright 2016 Axel Davy <axel.davy at ens.fr>
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+/* Adapted from u_upload_mgr.
+ * Makes suballocations from bigger allocations,
+ * while enabling fast mapping. */
+
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "pipe/p_context.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "util/slab.h"
+
+#include "nine_buffer_upload.h"
+
+#include "nine_debug.h"
+
+#define DBG_CHANNEL (DBG_INDEXBUFFER|DBG_VERTEXBUFFER)
+
+struct nine_buffer_group {
+ unsigned refcount; /* How many sub-buffers live inside the buffer */
+ struct pipe_resource *resource;
+ struct pipe_transfer *transfer;
+ uint8_t *map;
+ unsigned free_offset; /* Aligned offset to the upload buffer, pointing
+ * at the first unused byte. */
+};
+
+struct nine_subbuffer {
+ struct nine_buffer_group *parent; /* Can be NULL */
+ struct pipe_resource *resource; /* The parent resource if apply */
+ unsigned offset; /* Offset inside the resource */
+ /* If there is no parent, the resource map. Else NULL. */
+ struct pipe_transfer *transfer;
+ uint8_t *map;
+};
+
+struct nine_buffer_upload {
+ struct pipe_context *pipe;
+ struct slab_mempool buffer_pool;
+
+ unsigned buffers_size; /* Size of the big allocated buffers */
+ unsigned num_buffers;
+ boolean map_persistent; /* If persistent mappings are supported.
+ * If not just behaves like normal allocator */
+ struct nine_buffer_group *buffers;
+};
+
+static void
+nine_upload_create_buffer_group(struct nine_buffer_upload *upload,
+ struct nine_buffer_group *group)
+{
+ struct pipe_resource resource;
+ struct pipe_screen *screen = upload->pipe->screen;
+ DBG("%p %p\n", upload, group);
+
+ memset(&resource, 0, sizeof(resource));
+ resource.target = PIPE_BUFFER;
+ resource.format = PIPE_FORMAT_R8_UNORM;
+ resource.bind = PIPE_BIND_VERTEX_BUFFER;
+ resource.usage = PIPE_USAGE_STREAM;
+ resource.width0 = upload->buffers_size;
+ resource.height0 = 1;
+ resource.depth0 = 1;
+ resource.array_size = 1;
+ resource.flags = PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
+ PIPE_RESOURCE_FLAG_MAP_COHERENT;
+
+ group->refcount = 0;
+ group->resource = screen->resource_create(screen, &resource);
+ if (group->resource == NULL)
+ return;
+
+ group->map = pipe_buffer_map_range(upload->pipe, group->resource,
+ 0, upload->buffers_size,
+ PIPE_TRANSFER_WRITE |
+ PIPE_TRANSFER_PERSISTENT |
+ PIPE_TRANSFER_COHERENT,
+ &group->transfer);
+ if (group->map == NULL) {
+ group->transfer = NULL;
+ pipe_resource_reference(&group->resource, NULL);
+ return;
+ }
+
+ group->free_offset = 0;
+}
+
+static void
+nine_upload_destroy_buffer_group(struct nine_buffer_upload *upload,
+ struct nine_buffer_group *group)
+{
+ DBG("%p %p\n", upload, group);
+ assert(group->refcount == 0);
+
+ if (group->transfer)
+ pipe_transfer_unmap(upload->pipe, group->transfer);
+ if (group->resource)
+ pipe_resource_reference(&group->resource, NULL);
+ group->transfer = NULL;
+ group->map = NULL;
+}
+
+struct nine_buffer_upload *
+nine_upload_create(struct pipe_context *pipe, unsigned buffers_size,
+ unsigned num_buffers)
+{
+ struct nine_buffer_upload *upload = CALLOC_STRUCT(nine_buffer_upload);
+ int i;
+
+ DBG("\n");
+
+ if (!upload)
+ return NULL;
+
+ slab_create(&upload->buffer_pool, sizeof(struct nine_subbuffer), 4096);
+
+ upload->pipe = pipe;
+ upload->buffers_size = align(buffers_size, 4096);
+ upload->num_buffers = num_buffers;
+ upload->map_persistent =
+ pipe->screen->get_param(pipe->screen,
+ PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT);
+
+ upload->buffers = CALLOC(num_buffers, sizeof(struct nine_buffer_group));
+ if (!upload->buffers)
+ goto buffers_fail;
+
+ if (upload->map_persistent) {
+ for (i = 0; i < num_buffers; i++)
+ nine_upload_create_buffer_group(upload, &upload->buffers[i]);
+ }
+ return upload;
+
+buffers_fail:
+ slab_destroy(&upload->buffer_pool);
+ FREE(upload);
+ return NULL;
+}
+
+void
+nine_upload_destroy(struct nine_buffer_upload *upload)
+{
+ int i;
+
+ DBG("%p\n", upload);
+
+ for (i = 0; i < upload->num_buffers; i++)
+ nine_upload_destroy_buffer_group(upload, &upload->buffers[i]);
+ slab_destroy(&upload->buffer_pool);
+ FREE(upload);
+}
+
+struct nine_subbuffer *
+nine_upload_create_buffer(struct nine_buffer_upload *upload,
+ unsigned buffer_size)
+{
+ struct nine_subbuffer *buf = slab_alloc_st(&upload->buffer_pool);
+ struct nine_buffer_group *group = NULL;
+ unsigned size = align(buffer_size, 4096);
+ int i = 0;
+
+ DBG("%p %d\n", upload, buffer_size);
+
+ if (!buf)
+ return NULL;
+
+ for (i = 0; i < upload->num_buffers; i++) {
+ group = &upload->buffers[i];
+ if (group->resource &&
+ group->free_offset + size <= upload->buffers_size)
+ break;
+ }
+
+ if (i == upload->num_buffers) {
+ /* Allocate lonely buffer */
+ struct pipe_resource resource;
+ struct pipe_screen *screen = upload->pipe->screen;
+
+ DBG("Allocating buffer\n");
+ buf->parent = NULL;
+
+ memset(&resource, 0, sizeof(resource));
+ resource.target = PIPE_BUFFER;
+ resource.format = PIPE_FORMAT_R8_UNORM;
+ resource.bind = PIPE_BIND_VERTEX_BUFFER;
+ resource.usage = PIPE_USAGE_STREAM;
+ resource.width0 = buffer_size;
+ resource.height0 = 1;
+ resource.depth0 = 1;
+ resource.array_size = 1;
+ resource.flags = 0;
+
+ buf->resource = screen->resource_create(screen, &resource);
+ if (buf->resource == NULL) {
+ slab_free_st(&upload->buffer_pool, buf);
+ return NULL;
+ }
+
+ buf->map = pipe_buffer_map_range(upload->pipe, buf->resource,
+ 0, buffer_size,
+ PIPE_TRANSFER_WRITE |
+ PIPE_TRANSFER_PERSISTENT |
+ PIPE_TRANSFER_COHERENT,
+ &buf->transfer);
+ if (buf->map == NULL) {
+ pipe_resource_reference(&buf->resource, NULL);
+ slab_free_st(&upload->buffer_pool, buf);
+ return NULL;
+ }
+ buf->offset = 0;
+ return buf;
+ }
+
+ DBG("Using buffer group %d\n", i);
+
+ buf->parent = group;
+ buf->resource = NULL;
+ pipe_resource_reference(&buf->resource, group->resource);
+ buf->offset = group->free_offset;
+
+ group->free_offset += size;
+ group->refcount += 1;
+
+ return buf;
+}
+
+void
+nine_upload_release_buffer(struct nine_buffer_upload *upload,
+ struct nine_subbuffer *buf)
+{
+ DBG("%p %p %p\n", upload, buf, buf->parent);
+
+ if (buf->parent) {
+ pipe_resource_reference(&buf->resource, NULL);
+ buf->parent->refcount--;
+ if (buf->parent->refcount == 0) {
+ /* Allocate new buffer */
+ nine_upload_destroy_buffer_group(upload, buf->parent);
+ nine_upload_create_buffer_group(upload, buf->parent);
+ }
+ } else {
+ /* lonely buffer */
+ if (buf->transfer)
+ pipe_transfer_unmap(upload->pipe, buf->transfer);
+ pipe_resource_reference(&buf->resource, NULL);
+ }
+
+ slab_free_st(&upload->buffer_pool, buf);
+}
+
+uint8_t *
+nine_upload_buffer_get_map(struct nine_subbuffer *buf)
+{
+ if (buf->parent) {
+ return buf->parent->map + buf->offset;
+ }
+ /* lonely buffer */
+ return buf->map;
+}
+
+struct pipe_resource *
+nine_upload_buffer_resource_and_offset(struct nine_subbuffer *buf,
+ unsigned *offset)
+{
+ *offset = buf->offset;
+ return buf->resource;
+}
diff --git a/src/gallium/state_trackers/nine/nine_buffer_upload.h b/src/gallium/state_trackers/nine/nine_buffer_upload.h
new file mode 100644
index 0000000..b708825
--- /dev/null
+++ b/src/gallium/state_trackers/nine/nine_buffer_upload.h
@@ -0,0 +1,59 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * Copyright 2016 Axel Davy <axel.davy at ens.fr>
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef _NINE_BUFFER_UPLOAD_H_
+#define _NINE_BUFFER_UPLOAD_H_
+
+#include "pipe/p_defines.h"
+
+struct nine_buffer_upload;
+struct nine_subbuffer;
+
+struct nine_buffer_upload *
+nine_upload_create(struct pipe_context *pipe, unsigned buffers_size,
+ unsigned num_buffers);
+
+void
+nine_upload_destroy(struct nine_buffer_upload *upload);
+
+struct nine_subbuffer *
+nine_upload_create_buffer(struct nine_buffer_upload *upload,
+ unsigned buffer_size);
+
+void
+nine_upload_release_buffer(struct nine_buffer_upload *upload,
+ struct nine_subbuffer *buf);
+
+uint8_t *
+nine_upload_buffer_get_map(struct nine_subbuffer *buf);
+
+struct pipe_resource *
+nine_upload_buffer_resource_and_offset(struct nine_subbuffer *buf,
+ unsigned *offset);
+
+#endif /* _NINE_BUFFER_UPLOAD_H_ */
diff --git a/src/gallium/state_trackers/nine/vertexbuffer9.c b/src/gallium/state_trackers/nine/vertexbuffer9.c
index 027f290..df1d171 100644
--- a/src/gallium/state_trackers/nine/vertexbuffer9.c
+++ b/src/gallium/state_trackers/nine/vertexbuffer9.c
@@ -65,8 +65,7 @@ NineVertexBuffer9_dtor( struct NineVertexBuffer9 *This )
struct pipe_resource *
NineVertexBuffer9_GetResource( struct NineVertexBuffer9 *This, unsigned *offset )
{
- *offset = 0;
- return NineBuffer9_GetResource(&This->base);
+ return NineBuffer9_GetResource(&This->base, offset);
}
HRESULT NINE_WINAPI
--
2.10.2
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