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#include "util/u_memory.h"
#include "util/u_math.h"
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "brw_resource.h"
#include "brw_context.h"
#include "brw_batchbuffer.h"
#include "brw_winsys.h"
static boolean
brw_buffer_get_handle(struct pipe_screen *screen,
struct pipe_resource *resource,
struct winsys_handle *handle)
{
return FALSE;
}
static void
brw_buffer_destroy(struct pipe_screen *screen,
struct pipe_resource *resource)
{
struct brw_buffer *buf = brw_buffer( resource );
bo_reference(&buf->bo, NULL);
FREE(buf);
}
static void *
brw_buffer_transfer_map( struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
struct brw_screen *bscreen = brw_screen(pipe->screen);
struct brw_winsys_screen *sws = bscreen->sws;
struct brw_buffer *buf = brw_buffer(transfer->resource);
unsigned offset = transfer->box.x;
unsigned length = transfer->box.width;
unsigned usage = transfer->usage;
uint8_t *map;
if (buf->user_buffer)
map = buf->user_buffer;
else
map = sws->bo_map( buf->bo,
BRW_DATA_OTHER,
offset,
length,
(usage & PIPE_TRANSFER_WRITE) ? TRUE : FALSE,
(usage & PIPE_TRANSFER_DISCARD) ? TRUE : FALSE,
(usage & PIPE_TRANSFER_FLUSH_EXPLICIT) ? TRUE : FALSE);
return map + offset;
}
static void
brw_buffer_transfer_flush_region( struct pipe_context *pipe,
struct pipe_transfer *transfer,
const struct pipe_box *box)
{
struct brw_screen *bscreen = brw_screen(pipe->screen);
struct brw_winsys_screen *sws = bscreen->sws;
struct brw_buffer *buf = brw_buffer(transfer->resource);
unsigned offset = box->x;
unsigned length = box->width;
if (buf->user_buffer)
return;
sws->bo_flush_range( buf->bo,
offset,
length );
}
static void
brw_buffer_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
struct brw_screen *bscreen = brw_screen(pipe->screen);
struct brw_winsys_screen *sws = bscreen->sws;
struct brw_buffer *buf = brw_buffer( transfer->resource );
if (buf->bo)
sws->bo_unmap(buf->bo);
}
static unsigned brw_buffer_is_referenced( struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned face,
unsigned level)
{
struct brw_context *brw = brw_context(pipe);
struct brw_winsys_buffer *batch_bo = brw->batch->buf;
struct brw_buffer *buf = brw_buffer(resource);
if (buf->bo == NULL)
return PIPE_UNREFERENCED;
if (!brw_screen(pipe->screen)->sws->bo_references( batch_bo, buf->bo ))
return PIPE_UNREFERENCED;
return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
}
struct u_resource_vtbl brw_buffer_vtbl =
{
brw_buffer_get_handle, /* get_handle */
brw_buffer_destroy, /* resource_destroy */
brw_buffer_is_referenced, /* is_resource_referenced */
u_default_get_transfer, /* get_transfer */
u_default_transfer_destroy, /* transfer_destroy */
brw_buffer_transfer_map, /* transfer_map */
brw_buffer_transfer_flush_region, /* transfer_flush_region */
brw_buffer_transfer_unmap, /* transfer_unmap */
u_default_transfer_inline_write /* transfer_inline_write */
};
struct pipe_resource *
brw_buffer_create(struct pipe_screen *screen,
const struct pipe_resource *template)
{
struct brw_screen *bscreen = brw_screen(screen);
struct brw_winsys_screen *sws = bscreen->sws;
struct brw_buffer *buf;
unsigned buffer_type;
enum pipe_error ret;
buf = CALLOC_STRUCT(brw_buffer);
if (!buf)
return NULL;
buf->b.b = *template;
buf->b.vtbl = &brw_buffer_vtbl;
pipe_reference_init(&buf->b.b.reference, 1);
buf->b.b.screen = screen;
switch (template->bind & (PIPE_BIND_VERTEX_BUFFER |
PIPE_BIND_INDEX_BUFFER |
PIPE_BIND_CONSTANT_BUFFER))
{
case PIPE_BIND_VERTEX_BUFFER:
case PIPE_BIND_INDEX_BUFFER:
case (PIPE_BIND_VERTEX_BUFFER|PIPE_BIND_INDEX_BUFFER):
buffer_type = BRW_BUFFER_TYPE_VERTEX;
break;
case PIPE_BIND_CONSTANT_BUFFER:
buffer_type = BRW_BUFFER_TYPE_SHADER_CONSTANTS;
break;
default:
buffer_type = BRW_BUFFER_TYPE_GENERIC;
break;
}
ret = sws->bo_alloc( sws, buffer_type,
template->width0,
64, /* alignment */
&buf->bo );
if (ret != PIPE_OK)
return NULL;
return &buf->b.b;
}
struct pipe_resource *
brw_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes,
unsigned bind)
{
struct brw_buffer *buf;
buf = CALLOC_STRUCT(brw_buffer);
if (!buf)
return NULL;
pipe_reference_init(&buf->b.b.reference, 1);
buf->b.vtbl = &brw_buffer_vtbl;
buf->b.b.screen = screen;
buf->b.b.format = PIPE_FORMAT_R8_UNORM; /* ?? */
buf->b.b._usage = PIPE_USAGE_IMMUTABLE;
buf->b.b.bind = bind;
buf->b.b.width0 = bytes;
buf->b.b.height0 = 1;
buf->b.b.depth0 = 1;
buf->user_buffer = ptr;
return &buf->b.b;
}
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