Revert 92885 - Completed the implementation for PPB_Graphics3D interface.

ppapi/c/dev/ppb_graphics_3d_trusted_dev.h

-// Copyright (c) 2011 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 PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
-#define PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
-
-#include "ppapi/c/pp_bool.h"
-#include "ppapi/c/pp_instance.h"
-#include "ppapi/c/pp_resource.h"
-#include "ppapi/c/pp_stdint.h"
-
-#define PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE_0_1 \
-    "PPB_Graphics3DTrusted(Dev);0.1"
-#define PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE \
-    PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE_0_1
-
-typedef enum {
-  PPB_GRAPHICS3D_TRUSTED_ERROR_OK,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_GENERICERROR,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_INVALIDARGUMENTS,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_INVALIDSIZE,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_LOSTCONTEXT,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_OUTOFBOUNDS,
-  PPB_GRAPHICS3D_TRUSTED_ERROR_UNKNOWNCOMMAND
-} PPB_Graphics3DTrustedError;
-
-struct PP_Graphics3DTrustedState {
-  // Size of the command buffer in command buffer entries.
-  int32_t num_entries;
-
-  // The offset (in entries) from which the reader is reading.
-  int32_t get_offset;
-
-  // The offset (in entries) at which the writer is writing.
-  int32_t put_offset;
-
-  // The current token value. This is used by the writer to defer
-  // changes to shared memory objects until the reader has reached a certain
-  // point in the command buffer. The reader is responsible for updating the
-  // token value, for example in response to an asynchronous set token command
-  // embedded in the command buffer. The default token value is zero.
-  int32_t token;
-
-  // Error status.
-  PPB_Graphics3DTrustedError error;
-
-  // Generation index of this state. The generation index is incremented every
-  // time a new state is retrieved from the command processor, so that
-  // consistency can be kept even if IPC messages are processed out-of-order.
-  uint32_t generation;
-};
-
-struct PPB_Graphics3DTrusted_Dev {
-  // Creates a raw Graphics3D resource. A raw Graphics3D is intended to be used
-  // with the trusted interface, through the command buffer (for proxying).
-  PP_Resource (*CreateRaw)(PP_Instance instance_id,
-                           PP_Config3D_Dev config,
-                           PP_Resource share_context,
-                           const int32_t* attrib_list);
-
-  // Initializes the command buffer with the given size.
-  PP_Bool (*InitCommandBuffer)(PP_Resource context_id, int32_t size);
-
-  // Gets the ring buffer for the command buffer.
-  PP_Bool (*GetRingBuffer)(PP_Resource context_id,
-                           int* shm_handle,
-                           uint32_t* shm_size);
-
-  // Returns the current state.
-  struct PP_Graphics3DTrustedState (*GetState)(PP_Resource context);
-
-  // Create a transfer buffer and return a handle that uniquely
-  // identifies it or -1 on error.
-  int32_t (*CreateTransferBuffer)(PP_Resource context, uint32_t size);
-
-  // Destroy a transfer buffer and recycle the handle.
-  PP_Bool (*DestroyTransferBuffer)(PP_Resource context, int32_t id);
-
-  // Get the transfer buffer associated with a handle.
-  PP_Bool (*GetTransferBuffer)(PP_Resource context,
-                               int32_t id,
-                               int* shm_handle,
-                               uint32_t* shm_size);
-
-  // The writer calls this to update its put offset.
-  PP_Bool (*Flush)(PP_Resource context, int32_t put_offset);
-
-  // The writer calls this to update its put offset. This function returns the
-  // reader's most recent get offset. Does not return until after the put offset
-  // change callback has been invoked.
-  struct PP_Graphics3DTrustedState (*FlushSync)(PP_Resource context,
-                                                int32_t put_offset);
-
-  // Like FlushSync, but returns before processing commands if the get offset is
-  // different than last_known_get. Allows synchronization with the command
-  // processor without forcing immediate command execution.
-  struct PP_Graphics3DTrustedState (*FlushSyncFast)(PP_Resource context,
-                                                    int32_t put_offset,
-                                                    int32_t last_known_get);
-};
-
-#endif  // PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
-