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d3d12: Support transform feedback pause/resume

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Don't unconditionally reallocate/zero the fill buffer count, only
when a specific value is to be assigned.

Reviewed-by: Sil Vilerino <sivileri@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14787>
This commit is contained in:
Jesse Natalie 2022-01-26 06:49:21 -08:00
parent b2aa21362d
commit cab0ed52e8
1 changed files with 22 additions and 3 deletions
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25
src/gallium/drivers/d3d12/d3d12_context.cpp
View file

@ -1512,6 +1512,19 @@ fill_stream_output_buffer_view(D3D12_STREAM_OUTPUT_BUFFER_VIEW *view,
view->BufferFilledSizeLocation = d3d12_resource_gpu_virtual_address(fill_res) + target->fill_buffer_offset;
}
static void
update_so_fill_buffer_count(struct d3d12_context *ctx,
struct pipe_resource *fill_buffer,
unsigned fill_buffer_offset,
unsigned value)
{
struct pipe_transfer *transfer = NULL;
uint64_t *ptr = (uint64_t *)pipe_buffer_map_range(&ctx->base, fill_buffer,
fill_buffer_offset, sizeof(uint64_t), PIPE_MAP_WRITE, &transfer);
*ptr = value;
pipe_buffer_unmap(&ctx->base, transfer);
}
static void
d3d12_set_stream_output_targets(struct pipe_context *pctx,
unsigned num_targets,
@ -1530,11 +1543,16 @@ d3d12_set_stream_output_targets(struct pipe_context *pctx,
if (target) {
/* Sub-allocate a new fill buffer each time to avoid GPU/CPU synchronization */
u_suballocator_alloc(&ctx->so_allocator, sizeof(uint64_t), 4,
&target->fill_buffer_offset, &target->fill_buffer);
if (offsets[i] != ~0u) {
u_suballocator_alloc(&ctx->so_allocator, sizeof(uint64_t), 4,
&target->fill_buffer_offset, &target->fill_buffer);
update_so_fill_buffer_count(ctx, target->fill_buffer, target->fill_buffer_offset, offsets[i]);
}
fill_stream_output_buffer_view(&ctx->so_buffer_views[i], target);
pipe_so_target_reference(&ctx->so_targets[i], targets[i]);
} else {
ctx->so_buffer_views[i].BufferLocation = 0;
ctx->so_buffer_views[i].BufferFilledSizeLocation = 0;
ctx->so_buffer_views[i].SizeInBytes = 0;
pipe_so_target_reference(&ctx->so_targets[i], NULL);
}
@ -1764,6 +1782,7 @@ d3d12_enable_fake_so_buffers(struct d3d12_context *ctx, unsigned factor)
target->base.buffer->width0 * factor);
u_suballocator_alloc(&ctx->so_allocator, sizeof(uint64_t), 4,
&fake_target->fill_buffer_offset, &fake_target->fill_buffer);
update_so_fill_buffer_count(ctx, fake_target->fill_buffer, fake_target->fill_buffer_offset, 0);
pipe_buffer_read(&ctx->base, target->fill_buffer,
target->fill_buffer_offset, sizeof(uint64_t),
&fake_target->cached_filled_size);
@ -2394,7 +2413,7 @@ d3d12_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
ctx->base.const_uploader = u_upload_create_default(&ctx->base);
u_suballocator_init(&ctx->so_allocator, &ctx->base, 4096, 0,
PIPE_USAGE_DEFAULT,
0, true);
0, false);
struct primconvert_config cfg = {};
cfg.primtypes_mask = 1 << PIPE_PRIM_POINTS |