gpu/command_buffer/common/webgpu_cmd_format.h

// Copyright (c) 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_FORMAT_H_
#define GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_FORMAT_H_

#include <stddef.h>
#include <stdint.h>
#include <string.h>

#include "base/atomicops.h"
#include "base/logging.h"
#include "base/macros.h"
#include "gpu/command_buffer/common/common_cmd_format.h"
#include "gpu/command_buffer/common/gl2_types.h"
#include "gpu/command_buffer/common/webgpu_cmd_enums.h"
#include "gpu/command_buffer/common/webgpu_cmd_ids.h"
#include "ui/gfx/buffer_types.h"

namespace gpu {
namespace webgpu {
namespace cmds {

#define GPU_DAWN_RETURN_DATA_ALIGNMENT (8)
struct alignas(GPU_DAWN_RETURN_DATA_ALIGNMENT) DawnReturnDataHeader {
  DawnReturnDataType return_data_type;
};

static_assert(
    sizeof(DawnReturnDataHeader) % GPU_DAWN_RETURN_DATA_ALIGNMENT == 0,
    "DawnReturnDataHeader must align to GPU_DAWN_RETURN_DATA_ALIGNMENT");

struct alignas(GPU_DAWN_RETURN_DATA_ALIGNMENT) DawnReturnAdapterIDs {
  uint32_t request_adapter_serial;
  uint32_t adapter_service_id;
};

static_assert(
    sizeof(DawnReturnAdapterIDs) % GPU_DAWN_RETURN_DATA_ALIGNMENT == 0,
    "DawnReturnAdapterIDs must align to GPU_DAWN_RETURN_DATA_ALIGNMENT");

struct alignas(GPU_DAWN_RETURN_DATA_ALIGNMENT) DawnReturnAdapterInfo {
  DawnReturnAdapterIDs adapter_ids;
  char deserialized_buffer[];
};

static_assert(offsetof(DawnReturnAdapterInfo, deserialized_buffer) %
                      GPU_DAWN_RETURN_DATA_ALIGNMENT ==
                  0,
              "The offset of deserialized_buffer must align to "
              "GPU_DAWN_RETURN_DATA_ALIGNMENT");

// Command buffer is GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT byte aligned.
#pragma pack(push, 4)
static_assert(GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT == 4,
              "pragma pack alignment must be equal to "
              "GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT");

#include "gpu/command_buffer/common/webgpu_cmd_format_autogen.h"

#pragma pack(pop)

}  // namespace cmds
}  // namespace webgpu
}  // namespace gpu
#endif  // GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_FORMAT_H_