| // Copyright 2013 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_MAILBOX_H_ |
| #define GPU_COMMAND_BUFFER_MAILBOX_H_ |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include "gpu/gpu_export.h" |
| |
| // From gl2/gl2ext.h. |
| #ifndef GL_MAILBOX_SIZE_CHROMIUM |
| #define GL_MAILBOX_SIZE_CHROMIUM 64 |
| #endif |
| |
| namespace gpu { |
| |
| struct GPU_EXPORT Mailbox { |
| Mailbox(); |
| bool IsZero() const; |
| void SetZero(); |
| void SetName(const int8_t* name); |
| |
| // Generate a unique unguessable mailbox name. |
| static Mailbox Generate(); |
| |
| // Verify that the mailbox was created through Mailbox::Generate. This only |
| // works in Debug (always returns true in Release). This is not a secure |
| // check, only to catch bugs where clients forgot to call Mailbox::Generate. |
| bool Verify() const; |
| |
| int8_t name[GL_MAILBOX_SIZE_CHROMIUM]; |
| bool operator<(const Mailbox& other) const { |
| return memcmp(this, &other, sizeof other) < 0; |
| } |
| bool operator==(const Mailbox& other) const { |
| return memcmp(this, &other, sizeof other) == 0; |
| } |
| bool operator!=(const Mailbox& other) const { |
| return !operator==(other); |
| } |
| }; |
| |
| } // namespace gpu |
| |
| #endif // GPU_COMMAND_BUFFER_MAILBOX_H_ |
| |