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freedreno: PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE

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When the old contents do not need to be preserved, it is faster to
create a new backing bo rather than stall.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2013-09-11 10:08:08 -04:00
parent d7be322410
commit ffa3244534
1 changed files with 43 additions and 17 deletions
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60
src/gallium/drivers/freedreno/freedreno_resource.c
View file

@ -38,6 +38,23 @@
#include "freedreno_context.h"
#include "freedreno_util.h"
#include <errno.h>
static void
realloc_bo(struct fd_resource *rsc, uint32_t size)
{
struct fd_screen *screen = fd_screen(rsc->base.b.screen);
uint32_t flags = DRM_FREEDRENO_GEM_CACHE_WCOMBINE |
DRM_FREEDRENO_GEM_TYPE_KMEM; /* TODO */
if (rsc->bo)
fd_bo_del(rsc->bo);
rsc->bo = fd_bo_new(screen->dev, size, flags);
rsc->timestamp = 0;
rsc->dirty = false;
}
static void fd_resource_transfer_flush_region(struct pipe_context *pctx,
struct pipe_transfer *ptrans,
const struct pipe_box *box)
@ -80,6 +97,7 @@ fd_resource_transfer_map(struct pipe_context *pctx,
enum pipe_format format = prsc->format;
uint32_t op = 0;
char *buf;
int ret = 0;
ptrans = util_slab_alloc(&ctx->transfer_pool);
if (!ptrans)
@ -95,9 +113,26 @@ fd_resource_transfer_map(struct pipe_context *pctx,
ptrans->stride = slice->pitch * rsc->cpp;
ptrans->layer_stride = ptrans->stride;
if (usage & PIPE_TRANSFER_READ)
op |= DRM_FREEDRENO_PREP_READ;
if (usage & PIPE_TRANSFER_WRITE)
op |= DRM_FREEDRENO_PREP_WRITE;
if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE)
op |= DRM_FREEDRENO_PREP_NOSYNC;
/* some state trackers (at least XA) don't do this.. */
if (!(usage & PIPE_TRANSFER_FLUSH_EXPLICIT))
fd_resource_transfer_flush_region(pctx, ptrans, box);
// if (!(usage & PIPE_TRANSFER_FLUSH_EXPLICIT))
// fd_resource_transfer_flush_region(pctx, ptrans, box);
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
ret = fd_bo_cpu_prep(rsc->bo, ctx->screen->pipe, op);
if ((ret == -EBUSY) && (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE))
realloc_bo(rsc, fd_bo_size(rsc->bo));
else if (ret)
goto fail;
}
buf = fd_bo_map(rsc->bo);
if (!buf) {
@ -105,21 +140,16 @@ fd_resource_transfer_map(struct pipe_context *pctx,
return NULL;
}
if (usage & PIPE_TRANSFER_READ)
op |= DRM_FREEDRENO_PREP_READ;
if (usage & PIPE_TRANSFER_WRITE)
op |= DRM_FREEDRENO_PREP_WRITE;
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
fd_bo_cpu_prep(rsc->bo, ctx->screen->pipe, op);
*pptrans = ptrans;
return buf + slice->offset +
box->y / util_format_get_blockheight(format) * ptrans->stride +
box->x / util_format_get_blockwidth(format) * rsc->cpp +
box->z * slice->size0;
fail:
fd_resource_transfer_unmap(pctx, ptrans);
return NULL;
}
static void
@ -186,10 +216,9 @@ static struct pipe_resource *
fd_resource_create(struct pipe_screen *pscreen,
const struct pipe_resource *tmpl)
{
struct fd_screen *screen = fd_screen(pscreen);
struct fd_resource *rsc = CALLOC_STRUCT(fd_resource);
struct pipe_resource *prsc = &rsc->base.b;
uint32_t flags, size;
uint32_t size;
DBG("target=%d, format=%s, %ux%ux%u, array_size=%u, last_level=%u, "
"nr_samples=%u, usage=%u, bind=%x, flags=%x",
@ -213,10 +242,7 @@ fd_resource_create(struct pipe_screen *pscreen,
size = setup_slices(rsc);
flags = DRM_FREEDRENO_GEM_CACHE_WCOMBINE |
DRM_FREEDRENO_GEM_TYPE_KMEM; /* TODO */
rsc->bo = fd_bo_new(screen->dev, size, flags);
realloc_bo(rsc, size);
return prsc;
}