On Thu, Aug 07, 2014 at 12:14:24PM +0200, Bruno Jiménez wrote:
> This patch adds a new struct: r600_transfer_global. It will
> act as a wrapper around an r600_resource_global and an r600_transfer.
>
> It will be used for calling r600_compute_global_transfer_unmap when
> transfer_unmap is called. And at the same time, keep all the transfer
> information, so we can call r600_buffer_transfer_unmap with the
> 'real' transfer.
> ---
> src/gallium/drivers/r600/evergreen_compute.c | 46
> +++++++++++++++++++++-------
> src/gallium/drivers/r600/evergreen_compute.h | 5 +++
> 2 files changed, 40 insertions(+), 11 deletions(-)
>
> diff --git a/src/gallium/drivers/r600/evergreen_compute.c
> b/src/gallium/drivers/r600/evergreen_compute.c
> index f50f94a..ac72256 100644
> --- a/src/gallium/drivers/r600/evergreen_compute.c
> +++ b/src/gallium/drivers/r600/evergreen_compute.c
> @@ -970,10 +970,16 @@ void *r600_compute_global_transfer_map(
> struct r600_resource_global* buffer =
> (struct r600_resource_global*)resource;
>
> + struct r600_transfer_global *trans = NULL;
> + uint8_t *data;
> +
> struct compute_memory_item *item = buffer->chunk;
> struct pipe_resource *dst = NULL;
> unsigned offset = box->x;
>
> + trans = CALLOC(1, sizeof(struct r600_transfer_global));
> + trans->resource = resource;
> +
> if (is_item_in_pool(item)) {
> compute_memory_demote_item(pool, item, ctx_);
> }
> @@ -1004,8 +1010,11 @@ void *r600_compute_global_transfer_map(
> assert(box->z == 0);
>
> ///TODO: do it better, mapping is not possible if the pool is too big
> - return pipe_buffer_map_range(ctx_, dst,
> - offset, box->width, usage, ptransfer);
> + data = pipe_buffer_map_range(ctx_, dst,
> + offset, box->width, usage, &trans->ptransfer);
> +
> + *ptransfer = (struct pipe_transfer *)trans;
> + return data;
> }
>
> void r600_compute_global_transfer_unmap(
> @@ -1013,16 +1022,31 @@ void r600_compute_global_transfer_unmap(
> struct pipe_transfer* transfer)
> {
> /* struct r600_resource_global are not real resources, they just map
> - * to an offset within the compute memory pool. The function
> - * r600_compute_global_transfer_map() maps the memory pool
> - * resource rather than the struct r600_resource_global passed to
> - * it as an argument and then initalizes ptransfer->resource with
> - * the memory pool resource (via pipe_buffer_map_range).
> - * When transfer_unmap is called it uses the memory pool's
> - * vtable which calls r600_buffer_transfer_map() rather than
> - * this function.
> + * to an offset within the compute memory pool. The function
> + * r600_compute_global_transfer_map() creates a struct
> + * r600_transfer_global, which has as resource an r600_global_resource
> + * and an r600_transfer which will act as the 'real' pipe_transfer
> + * that will be passed to pipe_buffer_map_range.
> + *
> + * This allows us to use an r600_resource_global vtable when
> transfer_unmap
> + * is called, and still have the full information about the transfer,
> + * which will be used to actually unmap the resource.
> */
> - assert (!"This function should not be called");
> +
> + struct r600_context *rctx = (struct r600_context *)ctx_;
> + struct r600_transfer_global *trans =
> + (struct r600_transfer_global *)transfer;
> + struct r600_resource_global *buffer =
> + (struct r600_resource_global *)trans->resource;
> + struct compute_memory_item *item = buffer->chunk;
> +
> + COMPUTE_DBG(rctx->screen, "* r600_compute_global_transfer_unmap()\n"
> + "Unmaping Buffer: %u\n", item->id);
> +
> + ctx_->transfer_unmap(ctx_, trans->ptransfer);
> + item->map_count--;
> +
> + FREE(trans);
> }
>
> void r600_compute_global_transfer_flush_region(
> diff --git a/src/gallium/drivers/r600/evergreen_compute.h
> b/src/gallium/drivers/r600/evergreen_compute.h
> index 4fb53a1..842e5e4 100644
> --- a/src/gallium/drivers/r600/evergreen_compute.h
> +++ b/src/gallium/drivers/r600/evergreen_compute.h
> @@ -38,6 +38,11 @@ struct r600_resource_global {
> struct compute_memory_item *chunk;
> };
>
> +struct r600_transfer_global {
> + struct pipe_resource *resource;
> + struct pipe_transfer *ptransfer;
This still looks wrong. ptransfer should be the first member, and it
should not be a pointer.
-Tom
> +};
> +
> void *evergreen_create_compute_state(struct pipe_context *ctx, const struct
> pipe_compute_state *cso);
> void evergreen_delete_compute_state(struct pipe_context *ctx, void *state);
> void evergreen_compute_upload_input(struct pipe_context *context, const uint
> *block_layout, const uint *grid_layout, const void *input);
> --
> 2.0.4
>
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