forked from KolibriOS/kolibrios
272 lines
8.8 KiB
C
272 lines
8.8 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2009 VMware, Inc.
|
|
* 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.
|
|
*
|
|
**************************************************************************/
|
|
|
|
/* Helper utility for uploading user buffers & other data, and
|
|
* coalescing small buffers into larger ones.
|
|
*/
|
|
|
|
#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 "u_upload_mgr.h"
|
|
|
|
|
|
struct u_upload_mgr {
|
|
struct pipe_context *pipe;
|
|
|
|
unsigned default_size; /* Minimum size of the upload buffer, in bytes. */
|
|
unsigned alignment; /* Alignment of each sub-allocation. */
|
|
unsigned bind; /* Bitmask of PIPE_BIND_* flags. */
|
|
|
|
struct pipe_resource *buffer; /* Upload buffer. */
|
|
struct pipe_transfer *transfer; /* Transfer object for the upload buffer. */
|
|
uint8_t *map; /* Pointer to the mapped upload buffer. */
|
|
unsigned size; /* Actual size of the upload buffer. */
|
|
unsigned offset; /* Aligned offset to the upload buffer, pointing
|
|
* at the first unused byte. */
|
|
};
|
|
|
|
|
|
struct u_upload_mgr *u_upload_create( struct pipe_context *pipe,
|
|
unsigned default_size,
|
|
unsigned alignment,
|
|
unsigned bind )
|
|
{
|
|
struct u_upload_mgr *upload = CALLOC_STRUCT( u_upload_mgr );
|
|
if (!upload)
|
|
return NULL;
|
|
|
|
upload->pipe = pipe;
|
|
upload->default_size = default_size;
|
|
upload->alignment = alignment;
|
|
upload->bind = bind;
|
|
upload->buffer = NULL;
|
|
|
|
return upload;
|
|
}
|
|
|
|
void u_upload_unmap( struct u_upload_mgr *upload )
|
|
{
|
|
if (upload->transfer) {
|
|
struct pipe_box *box = &upload->transfer->box;
|
|
if ((int) upload->offset > box->x) {
|
|
|
|
pipe_buffer_flush_mapped_range(upload->pipe, upload->transfer,
|
|
box->x, upload->offset - box->x);
|
|
}
|
|
pipe_transfer_unmap(upload->pipe, upload->transfer);
|
|
upload->transfer = NULL;
|
|
upload->map = NULL;
|
|
}
|
|
}
|
|
|
|
/* Release old buffer.
|
|
*
|
|
* This must usually be called prior to firing the command stream
|
|
* which references the upload buffer, as many memory managers will
|
|
* cause subsequent maps of a fired buffer to wait.
|
|
*
|
|
* Can improve this with a change to pipe_buffer_write to use the
|
|
* DONT_WAIT bit, but for now, it's easiest just to grab a new buffer.
|
|
*/
|
|
void u_upload_flush( struct u_upload_mgr *upload )
|
|
{
|
|
/* Unmap and unreference the upload buffer. */
|
|
u_upload_unmap(upload);
|
|
pipe_resource_reference( &upload->buffer, NULL );
|
|
upload->size = 0;
|
|
}
|
|
|
|
|
|
void u_upload_destroy( struct u_upload_mgr *upload )
|
|
{
|
|
u_upload_flush( upload );
|
|
FREE( upload );
|
|
}
|
|
|
|
|
|
static enum pipe_error
|
|
u_upload_alloc_buffer( struct u_upload_mgr *upload,
|
|
unsigned min_size )
|
|
{
|
|
unsigned size;
|
|
|
|
/* Release the old buffer, if present:
|
|
*/
|
|
u_upload_flush( upload );
|
|
|
|
/* Allocate a new one:
|
|
*/
|
|
size = align(MAX2(upload->default_size, min_size), 4096);
|
|
|
|
upload->buffer = pipe_buffer_create( upload->pipe->screen,
|
|
upload->bind,
|
|
PIPE_USAGE_STREAM,
|
|
size );
|
|
if (upload->buffer == NULL) {
|
|
return PIPE_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
/* Map the new buffer. */
|
|
upload->map = pipe_buffer_map_range(upload->pipe, upload->buffer,
|
|
0, size,
|
|
PIPE_TRANSFER_WRITE |
|
|
PIPE_TRANSFER_FLUSH_EXPLICIT,
|
|
&upload->transfer);
|
|
if (upload->map == NULL) {
|
|
upload->transfer = NULL;
|
|
upload->size = 0;
|
|
pipe_resource_reference(&upload->buffer, NULL);
|
|
return PIPE_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
upload->size = size;
|
|
upload->offset = 0;
|
|
return PIPE_OK;
|
|
}
|
|
|
|
enum pipe_error u_upload_alloc( struct u_upload_mgr *upload,
|
|
unsigned min_out_offset,
|
|
unsigned size,
|
|
unsigned *out_offset,
|
|
struct pipe_resource **outbuf,
|
|
void **ptr )
|
|
{
|
|
unsigned alloc_size = align( size, upload->alignment );
|
|
unsigned alloc_offset = align(min_out_offset, upload->alignment);
|
|
unsigned offset;
|
|
|
|
/* Init these return values here in case we fail below to make
|
|
* sure the caller doesn't get garbage values.
|
|
*/
|
|
*out_offset = ~0;
|
|
pipe_resource_reference(outbuf, NULL);
|
|
*ptr = NULL;
|
|
|
|
/* Make sure we have enough space in the upload buffer
|
|
* for the sub-allocation. */
|
|
if (MAX2(upload->offset, alloc_offset) + alloc_size > upload->size) {
|
|
enum pipe_error ret = u_upload_alloc_buffer(upload,
|
|
alloc_offset + alloc_size);
|
|
if (ret != PIPE_OK)
|
|
return ret;
|
|
}
|
|
|
|
offset = MAX2(upload->offset, alloc_offset);
|
|
|
|
if (!upload->map) {
|
|
upload->map = pipe_buffer_map_range(upload->pipe, upload->buffer,
|
|
offset, upload->size - offset,
|
|
PIPE_TRANSFER_WRITE |
|
|
PIPE_TRANSFER_FLUSH_EXPLICIT |
|
|
PIPE_TRANSFER_UNSYNCHRONIZED,
|
|
&upload->transfer);
|
|
if (!upload->map) {
|
|
upload->transfer = NULL;
|
|
return PIPE_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
upload->map -= offset;
|
|
}
|
|
|
|
assert(offset < upload->buffer->width0);
|
|
assert(offset + size <= upload->buffer->width0);
|
|
assert(size);
|
|
|
|
/* Emit the return values: */
|
|
*ptr = upload->map + offset;
|
|
pipe_resource_reference( outbuf, upload->buffer );
|
|
*out_offset = offset;
|
|
|
|
upload->offset = offset + alloc_size;
|
|
return PIPE_OK;
|
|
}
|
|
|
|
enum pipe_error u_upload_data( struct u_upload_mgr *upload,
|
|
unsigned min_out_offset,
|
|
unsigned size,
|
|
const void *data,
|
|
unsigned *out_offset,
|
|
struct pipe_resource **outbuf)
|
|
{
|
|
uint8_t *ptr;
|
|
enum pipe_error ret = u_upload_alloc(upload, min_out_offset, size,
|
|
out_offset, outbuf,
|
|
(void**)&ptr);
|
|
if (ret != PIPE_OK)
|
|
return ret;
|
|
|
|
memcpy(ptr, data, size);
|
|
return PIPE_OK;
|
|
}
|
|
|
|
|
|
/* As above, but upload the full contents of a buffer. Useful for
|
|
* uploading user buffers, avoids generating an explosion of GPU
|
|
* buffers if you have an app that does lots of small vertex buffer
|
|
* renders or DrawElements calls.
|
|
*/
|
|
enum pipe_error u_upload_buffer( struct u_upload_mgr *upload,
|
|
unsigned min_out_offset,
|
|
unsigned offset,
|
|
unsigned size,
|
|
struct pipe_resource *inbuf,
|
|
unsigned *out_offset,
|
|
struct pipe_resource **outbuf)
|
|
{
|
|
enum pipe_error ret = PIPE_OK;
|
|
struct pipe_transfer *transfer = NULL;
|
|
const char *map = NULL;
|
|
|
|
map = (const char *)pipe_buffer_map_range(upload->pipe,
|
|
inbuf,
|
|
offset, size,
|
|
PIPE_TRANSFER_READ,
|
|
&transfer);
|
|
|
|
if (map == NULL) {
|
|
return PIPE_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if (0)
|
|
debug_printf("upload ptr %p ofs %d sz %d\n", map, offset, size);
|
|
|
|
ret = u_upload_data( upload,
|
|
min_out_offset,
|
|
size,
|
|
map,
|
|
out_offset,
|
|
outbuf);
|
|
|
|
pipe_buffer_unmap( upload->pipe, transfer );
|
|
|
|
return ret;
|
|
}
|