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vc4: When asked to discard-map a whole resource, discard it.

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This saves a bunch of extra flushes when texsubimaging a whole texture
that's been used for rendering, or subdataing a whole BO.  In particular,
this massively reduces the runtime of piglit texture-packed-formats (when
the probes have been moved out of the inner loop).
This commit is contained in:
Eric Anholt 2014-10-24 16:50:37 +01:00
parent a71c3b885a
commit 18ccda7b86
1 changed files with 28 additions and 14 deletions
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42
src/gallium/drivers/vc4/vc4_resource.c
View file

@ -33,6 +33,20 @@
#include "vc4_resource.h"
#include "vc4_tiling.h"
static void
vc4_resource_bo_alloc(struct vc4_resource *rsc)
{
struct pipe_resource *prsc = &rsc->base.b;
struct pipe_screen *pscreen = prsc->screen;
vc4_bo_unreference(&rsc->bo);
rsc->bo = vc4_bo_alloc(vc4_screen(pscreen),
rsc->slices[0].offset +
rsc->slices[0].size +
rsc->cube_map_stride * (prsc->array_size - 1),
"resource");
}
static void
vc4_resource_transfer_unmap(struct pipe_context *pctx,
struct pipe_transfer *ptrans)
@ -75,14 +89,19 @@ vc4_resource_transfer_map(struct pipe_context *pctx,
char *buf;
if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
uint32_t size = rsc->bo->size;
vc4_bo_unreference(&rsc->bo);
rsc->bo = vc4_bo_alloc(vc4->screen, size, "resource");
}
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
if (vc4_cl_references_bo(pctx, rsc->bo))
vc4_flush(pctx);
vc4_resource_bo_alloc(rsc);
} else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
if (vc4_cl_references_bo(pctx, rsc->bo)) {
if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
prsc->last_level == 0 &&
prsc->width0 == box->width &&
prsc->height0 == box->height &&
prsc->depth0 == box->depth) {
vc4_resource_bo_alloc(rsc);
} else {
vc4_flush(pctx);
}
}
}
if (usage & PIPE_TRANSFER_WRITE)
@ -324,12 +343,7 @@ vc4_resource_create(struct pipe_screen *pscreen,
}
vc4_setup_slices(rsc);
rsc->bo = vc4_bo_alloc(vc4_screen(pscreen),
rsc->slices[0].offset +
rsc->slices[0].size +
rsc->cube_map_stride * (prsc->array_size - 1),
"resource");
vc4_resource_bo_alloc(rsc);
if (!rsc->bo)
goto fail;