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nvc0: reduce overhead from always marking images dirty

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We would revalidate images when anything was touched at all. Which is
unfortunate, since the state tracker does not use CSO's to reduce the
workload. So instead implement a protocol to ensure that something has
changed before revalidating all the images.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit fd6bbc2ee2)
This commit is contained in:
Ilia Mirkin 2016-06-04 14:13:38 -04:00 • committed by Emil Velikov
parent 5a63ae9f15
commit ceb9ed0e38
1 changed files with 36 additions and 9 deletions
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45
src/gallium/drivers/nouveau/nvc0/nvc0_state.c
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@ -1231,36 +1231,60 @@ nvc0_set_compute_resources(struct pipe_context *pipe,
nvc0_context(pipe)->dirty_cp |= NVC0_NEW_CP_SURFACES;
}
static void
static bool
nvc0_bind_images_range(struct nvc0_context *nvc0, const unsigned s,
unsigned start, unsigned nr,
struct pipe_image_view *pimages)
{
const unsigned end = start + nr;
const unsigned mask = ((1 << nr) - 1) << start;
unsigned mask = 0;
unsigned i;
assert(s < 6);
if (pimages) {
for (i = start; i < end; ++i) {
struct pipe_image_view *img = &nvc0->images[s][i];
const unsigned p = i - start;
if (img->resource == pimages[p].resource &&
img->format == pimages[p].format &&
img->access == pimages[p].access) {
if (img->resource == NULL)
continue;
if (img->resource->target == PIPE_BUFFER &&
img->u.buf.first_element == pimages[p].u.buf.first_element &&
img->u.buf.last_element == pimages[p].u.buf.last_element)
continue;
if (img->resource->target != PIPE_BUFFER &&
img->u.tex.first_layer == pimages[p].u.tex.first_layer &&
img->u.tex.last_layer == pimages[p].u.tex.last_layer &&
img->u.tex.level == pimages[p].u.tex.level)
continue;
}
mask |= (1 << i);
if (pimages[p].resource)
nvc0->images_valid[s] |= (1 << i);
else
nvc0->images_valid[s] &= ~(1 << i);
nvc0->images[s][i].format = pimages[p].format;
nvc0->images[s][i].access = pimages[p].access;
if (pimages[p].resource->target == PIPE_BUFFER)
nvc0->images[s][i].u.buf = pimages[p].u.buf;
img->format = pimages[p].format;
img->access = pimages[p].access;
if (pimages[p].resource && pimages[p].resource->target == PIPE_BUFFER)
img->u.buf = pimages[p].u.buf;
else
nvc0->images[s][i].u.tex = pimages[p].u.tex;
img->u.tex = pimages[p].u.tex;
pipe_resource_reference(
&nvc0->images[s][i].resource, pimages[p].resource);
&img->resource, pimages[p].resource);
}
if (!mask)
return false;
} else {
mask = ((1 << nr) - 1) << start;
if (!(nvc0->images_valid[s] & mask))
return false;
for (i = start; i < end; ++i)
pipe_resource_reference(&nvc0->images[s][i].resource, NULL);
nvc0->images_valid[s] &= ~mask;
@ -1271,6 +1295,8 @@ nvc0_bind_images_range(struct nvc0_context *nvc0, const unsigned s,
nouveau_bufctx_reset(nvc0->bufctx_cp, NVC0_BIND_CP_SUF);
else
nouveau_bufctx_reset(nvc0->bufctx_3d, NVC0_BIND_3D_SUF);
return true;
}
static void
@ -1279,7 +1305,8 @@ nvc0_set_shader_images(struct pipe_context *pipe, unsigned shader,
struct pipe_image_view *images)
{
const unsigned s = nvc0_shader_stage(shader);
nvc0_bind_images_range(nvc0_context(pipe), s, start, nr, images);
if (!nvc0_bind_images_range(nvc0_context(pipe), s, start, nr, images))
return;
if (s == 5)
nvc0_context(pipe)->dirty_cp |= NVC0_NEW_CP_SURFACES;