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freedreno/a6xx: Allocate lrcfc when needed for direction tracking

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On later GPUs this buffer is also used for direction tracking, etc.
Meaning that it is not optional.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30304>
This commit is contained in:
Rob Clark
2024-07-23 13:11:51 -07:00
committed by Marge Bot
parent 679e9093e1
commit b1937f76ff
3 changed files with 37 additions and 7 deletions
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11
src/gallium/drivers/freedreno/a6xx/fd6_gmem.cc
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@@ -281,9 +281,14 @@ emit_lrz(struct fd_batch *batch, struct fd_batch_subpass *subpass)
fd6_emit_lrz_flush(ring);
struct fd_resource *zsbuf = fd_resource(pfb->zsbuf->texture);
OUT_REG(ring, A6XX_GRAS_LRZ_BUFFER_BASE(.bo = subpass->lrz),
A6XX_GRAS_LRZ_BUFFER_PITCH(.pitch = zsbuf->lrz_pitch),
A6XX_GRAS_LRZ_FAST_CLEAR_BUFFER_BASE());
OUT_REG(ring,
A6XX_GRAS_LRZ_BUFFER_BASE(.bo = subpass->lrz),
A6XX_GRAS_LRZ_BUFFER_PITCH(.pitch = zsbuf->lrz_pitch),
A6XX_GRAS_LRZ_FAST_CLEAR_BUFFER_BASE(
.bo = zsbuf->lrz_fc_offset ? subpass->lrz : NULL,
.bo_offset = zsbuf->lrz_fc_offset
),
);
fd_ringbuffer_attach_bo(ring, subpass->lrz);
}

32
src/gallium/drivers/freedreno/a6xx/fd6_resource.cc
View File

@@ -32,6 +32,7 @@
#include "a6xx/fd6_blitter.h"
#include "fd6_resource.h"
#include "fdl/fd6_format_table.h"
#include "common/freedreno_lrz.h"
#include "common/freedreno_ubwc.h"
#include "a6xx.xml.h"
@@ -233,6 +234,7 @@ fd6_validate_format(struct fd_context *ctx, struct fd_resource *rsc,
}
}
template <chip CHIP>
static void
setup_lrz(struct fd_resource *rsc)
{
@@ -252,21 +254,43 @@ setup_lrz(struct fd_resource *rsc)
unsigned lrz_pitch = align(DIV_ROUND_UP(width0, 8), 32);
unsigned lrz_height = align(DIV_ROUND_UP(height0, 8), 16);
unsigned size = lrz_pitch * lrz_height * 2;
rsc->lrz_height = lrz_height;
rsc->lrz_width = lrz_pitch;
rsc->lrz_pitch = lrz_pitch;
rsc->lrz = fd_bo_new(screen->dev, size, FD_BO_NOMAP, "lrz");
unsigned lrz_size = lrz_pitch * lrz_height * 2;
unsigned nblocksx = DIV_ROUND_UP(DIV_ROUND_UP(width0, 8), 16);
unsigned nblocksy = DIV_ROUND_UP(DIV_ROUND_UP(height0, 8), 4);
/* Fast-clear buffer is 1bit/block */
unsigned lrz_fc_size = DIV_ROUND_UP(nblocksx * nblocksy, 8);
/* Fast-clear buffer cannot be larger than 512 bytes on A6XX and 1024 bytes
* on A7XX (HW limitation)
*/
bool has_lrz_fc = screen->info->a6xx.enable_lrz_fast_clear &&
lrz_fc_size <= fd_lrzfc_layout<CHIP>::FC_SIZE;
/* Allocate a LRZ fast-clear buffer even if we aren't using FC, if the
* hw is re-using this buffer for direction tracking
*/
if (has_lrz_fc || screen->info->a6xx.has_lrz_dir_tracking) {
rsc->lrz_fc_offset = lrz_size;
lrz_size += sizeof(fd_lrzfc_layout<CHIP>);
}
rsc->lrz = fd_bo_new(screen->dev, lrz_size, FD_BO_NOMAP, "lrz");
}
static uint32_t
fd6_setup_slices(struct fd_resource *rsc)
{
struct pipe_resource *prsc = &rsc->b.b;
struct fd_screen *screen = fd_screen(prsc->screen);
if (!FD_DBG(NOLRZ) && has_depth(prsc->format) && !is_z32(prsc->format))
setup_lrz(rsc);
FD_CALLX(screen->info, setup_lrz)(rsc);
if (rsc->layout.ubwc && !ok_ubwc_format(prsc->screen, prsc->format))
rsc->layout.ubwc = false;

1
src/gallium/drivers/freedreno/freedreno_resource.h
View File

@@ -168,6 +168,7 @@ struct fd_resource {
uint16_t lrz_width; // for lrz clear, does this differ from lrz_pitch?
uint16_t lrz_height;
uint16_t lrz_pitch;
uint16_t lrz_fc_offset;
struct fd_bo *lrz;
};