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Side by Side Diff: ppapi/c/dev/ppb_context_3d_trusted_dev.h

Issue 8676042: Remove Context3D/Surface3D (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: style Created 9 years ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef PPAPI_C_DEV_PPB_CONTEXT_3D_TRUSTED_DEV_H_
6 #define PPAPI_C_DEV_PPB_CONTEXT_3D_TRUSTED_DEV_H_
7
8 #include "ppapi/c/dev/ppb_context_3d_dev.h"
9 #include "ppapi/c/pp_bool.h"
10 #include "ppapi/c/pp_instance.h"
11 #include "ppapi/c/pp_resource.h"
12 #include "ppapi/c/pp_stdint.h"
13
14 #define PPB_CONTEXT_3D_TRUSTED_DEV_INTERFACE_0_4 "PPB_Context3DTrusted(Dev);0.4"
15 #define PPB_CONTEXT_3D_TRUSTED_DEV_INTERFACE \
16 PPB_CONTEXT_3D_TRUSTED_DEV_INTERFACE_0_4
17
18 // TODO(brettw) Remove these generic names from the global namespace!
19 typedef enum {
20 kNoError,
21 kInvalidSize,
22 kOutOfBounds,
23 kUnknownCommand,
24 kInvalidArguments,
25 kLostContext,
26 kGenericError
27 } PPB_Context3DTrustedError;
28
29 struct PP_Context3DTrustedState {
30 // Size of the command buffer in command buffer entries.
31 int32_t num_entries;
32
33 // The offset (in entries) from which the reader is reading.
34 int32_t get_offset;
35
36 // The offset (in entries) at which the writer is writing.
37 int32_t put_offset;
38
39 // The current token value. This is used by the writer to defer
40 // changes to shared memory objects until the reader has reached a certain
41 // point in the command buffer. The reader is responsible for updating the
42 // token value, for example in response to an asynchronous set token command
43 // embedded in the command buffer. The default token value is zero.
44 int32_t token;
45
46 // Error status.
47 PPB_Context3DTrustedError error;
48
49 // Generation index of this state. The generation index is incremented every
50 // time a new state is retrieved from the command processor, so that
51 // consistency can be kept even if IPC messages are processed out-of-order.
52 uint32_t generation;
53 };
54
55 struct PPB_Context3DTrusted_Dev {
56 // Creates a raw Context3D resource. A raw Context3D is intended to be used
57 // with the trusted interface, through the command buffer (for proxying). In
58 // particular, when a Surface3D is bound to a raw context, SwapBuffers has no
59 // effect.
60 PP_Resource (*CreateRaw)(PP_Instance instance_id,
61 PP_Config3D_Dev config,
62 PP_Resource share_context,
63 const int32_t* attrib_list);
64
65 // Initializes the command buffer with the given size.
66 PP_Bool (*Initialize)(PP_Resource context_id, int32_t size);
67
68 // Gets the ring buffer for the command buffer.
69 PP_Bool (*GetRingBuffer)(PP_Resource context_id,
70 int* shm_handle,
71 uint32_t* shm_size);
72
73 // Returns the current state.
74 struct PP_Context3DTrustedState (*GetState)(PP_Resource context);
75
76 // The writer calls this to update its put offset.
77 PP_Bool (*Flush)(PP_Resource context, int32_t put_offset);
78
79
80 // The writer calls this to update its put offset. This function returns the
81 // reader's most recent get offset. Does not return until after the put offset
82 // change callback has been invoked.
83 struct PP_Context3DTrustedState (*FlushSync)(PP_Resource context,
84 int32_t put_offset);
85
86 // Create a transfer buffer and return a handle that uniquely
87 // identifies it or -1 on error.
88 int32_t (*CreateTransferBuffer)(PP_Resource context, uint32_t size);
89
90 // Destroy a transfer buffer and recycle the handle.
91 PP_Bool (*DestroyTransferBuffer)(PP_Resource context, int32_t id);
92
93 // Get the transfer buffer associated with a handle.
94 PP_Bool (*GetTransferBuffer)(PP_Resource context,
95 int32_t id,
96 int* shm_handle,
97 uint32_t* shm_size);
98
99 // Like FlushSync, but returns before processing commands if the get offset is
100 // different than last_known_get. Allows synchronization with the command
101 // processor without forcing immediate command execution.
102 struct PP_Context3DTrustedState (*FlushSyncFast)(PP_Resource context,
103 int32_t put_offset,
104 int32_t last_known_get);
105 };
106
107 #endif // PPAPI_C_DEV_PPB_CONTEXT_3D_TRUSTED_DEV_H_
108
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