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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // This file contains the common parts of command buffer formats. | 5 // This file contains the common parts of command buffer formats. |
| 6 | 6 |
| 7 #ifndef GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ | 7 #ifndef GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ |
| 8 #define GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ | 8 #define GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ |
| 9 | 9 |
| 10 #include <stddef.h> | 10 #include <stddef.h> |
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| 144 // buffer commands in to various lists and never have them get out of sync. To | 144 // buffer commands in to various lists and never have them get out of sync. To |
| 145 // add a new command, add it this list, create the corresponding structure below | 145 // add a new command, add it this list, create the corresponding structure below |
| 146 // and then add a function in gapi_decoder.cc called Handle_COMMAND_NAME where | 146 // and then add a function in gapi_decoder.cc called Handle_COMMAND_NAME where |
| 147 // COMMAND_NAME is the name of your command structure. | 147 // COMMAND_NAME is the name of your command structure. |
| 148 // | 148 // |
| 149 // NOTE: THE ORDER OF THESE MUST NOT CHANGE (their id is derived by order) | 149 // NOTE: THE ORDER OF THESE MUST NOT CHANGE (their id is derived by order) |
| 150 #define COMMON_COMMAND_BUFFER_CMDS(OP) \ | 150 #define COMMON_COMMAND_BUFFER_CMDS(OP) \ |
| 151 OP(Noop) /* 0 */ \ | 151 OP(Noop) /* 0 */ \ |
| 152 OP(SetToken) /* 1 */ \ | 152 OP(SetToken) /* 1 */ \ |
| 153 OP(Jump) /* 2 */ \ | 153 OP(Jump) /* 2 */ \ |
| 154 OP(JumpRelative) /* 3 */ \ | 154 OP(SetBucketSize) /* 3 */ \ |
| 155 OP(Call) /* 4 */ \ | 155 OP(SetBucketData) /* 4 */ \ |
| 156 OP(CallRelative) /* 5 */ \ | 156 OP(SetBucketDataImmediate) /* 5 */ \ |
| 157 OP(Return) /* 6 */ \ | 157 OP(GetBucketStart) /* 6 */ \ |
| 158 OP(SetBucketSize) /* 7 */ \ | 158 OP(GetBucketData) /* 7 */ \ |
| 159 OP(SetBucketData) /* 8 */ \ | |
| 160 OP(SetBucketDataImmediate) /* 9 */ \ | |
| 161 OP(GetBucketStart) /* 10 */ \ | |
| 162 OP(GetBucketData) /* 11 */ \ | |
| 163 | 159 |
| 164 // Common commands. | 160 // Common commands. |
| 165 enum CommandId { | 161 enum CommandId { |
| 166 #define COMMON_COMMAND_BUFFER_CMD_OP(name) k ## name, | 162 #define COMMON_COMMAND_BUFFER_CMD_OP(name) k ## name, |
| 167 | 163 |
| 168 COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP) | 164 COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP) |
| 169 | 165 |
| 170 #undef COMMON_COMMAND_BUFFER_CMD_OP | 166 #undef COMMON_COMMAND_BUFFER_CMD_OP |
| 171 | 167 |
| 172 kNumCommands, | 168 kNumCommands, |
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| 257 CommandHeader header; | 253 CommandHeader header; |
| 258 uint32 offset; | 254 uint32 offset; |
| 259 }; | 255 }; |
| 260 | 256 |
| 261 COMPILE_ASSERT(sizeof(Jump) == 8, Sizeof_Jump_is_not_8); | 257 COMPILE_ASSERT(sizeof(Jump) == 8, Sizeof_Jump_is_not_8); |
| 262 COMPILE_ASSERT(offsetof(Jump, header) == 0, | 258 COMPILE_ASSERT(offsetof(Jump, header) == 0, |
| 263 Offsetof_Jump_header_not_0); | 259 Offsetof_Jump_header_not_0); |
| 264 COMPILE_ASSERT(offsetof(Jump, offset) == 4, | 260 COMPILE_ASSERT(offsetof(Jump, offset) == 4, |
| 265 Offsetof_Jump_offset_not_4); | 261 Offsetof_Jump_offset_not_4); |
| 266 | 262 |
| 267 // The JumpRelative command jumps to another place in the command buffer | |
| 268 // relative to the end of this command. In other words. JumpRelative with an | |
| 269 // offset of zero is effectively a noop. | |
| 270 struct JumpRelative { | |
| 271 typedef JumpRelative ValueType; | |
| 272 static const CommandId kCmdId = kJumpRelative; | |
| 273 static const cmd::ArgFlags kArgFlags = cmd::kFixed; | |
| 274 | |
| 275 void SetHeader() { | |
| 276 header.SetCmd<ValueType>(); | |
| 277 } | |
| 278 | |
| 279 void Init(int32 _offset) { | |
| 280 SetHeader(); | |
| 281 offset = _offset; | |
| 282 } | |
| 283 static void* Set(void* cmd, int32 _offset) { | |
| 284 static_cast<ValueType*>(cmd)->Init(_offset); | |
| 285 return NextCmdAddress<ValueType>(cmd); | |
| 286 } | |
| 287 | |
| 288 CommandHeader header; | |
| 289 int32 offset; | |
| 290 }; | |
| 291 | |
| 292 COMPILE_ASSERT(sizeof(JumpRelative) == 8, Sizeof_JumpRelative_is_not_8); | |
| 293 COMPILE_ASSERT(offsetof(JumpRelative, header) == 0, | |
| 294 Offsetof_JumpRelative_header_not_0); | |
| 295 COMPILE_ASSERT(offsetof(JumpRelative, offset) == 4, | |
| 296 Offsetof_JumpRelative_offset_4); | |
| 297 | |
| 298 // The Call command jumps to a subroutine which can be returned from with the | |
| 299 // Return command. | |
| 300 struct Call { | |
| 301 typedef Call ValueType; | |
| 302 static const CommandId kCmdId = kCall; | |
| 303 static const cmd::ArgFlags kArgFlags = cmd::kFixed; | |
| 304 | |
| 305 void SetHeader() { | |
| 306 header.SetCmd<ValueType>(); | |
| 307 } | |
| 308 | |
| 309 void Init(uint32 _offset) { | |
| 310 SetHeader(); | |
| 311 offset = _offset; | |
| 312 } | |
| 313 static void* Set(void* cmd, uint32 _offset) { | |
| 314 static_cast<ValueType*>(cmd)->Init(_offset); | |
| 315 return NextCmdAddress<ValueType>(cmd); | |
| 316 } | |
| 317 | |
| 318 CommandHeader header; | |
| 319 uint32 offset; | |
| 320 }; | |
| 321 | |
| 322 COMPILE_ASSERT(sizeof(Call) == 8, Sizeof_Call_is_not_8); | |
| 323 COMPILE_ASSERT(offsetof(Call, header) == 0, | |
| 324 Offsetof_Call_header_not_0); | |
| 325 COMPILE_ASSERT(offsetof(Call, offset) == 4, | |
| 326 Offsetof_Call_offset_not_4); | |
| 327 | |
| 328 // The CallRelative command jumps to a subroutine using a relative offset. The | |
| 329 // offset is relative to the end of this command.. | |
| 330 struct CallRelative { | |
| 331 typedef CallRelative ValueType; | |
| 332 static const CommandId kCmdId = kCallRelative; | |
| 333 static const cmd::ArgFlags kArgFlags = cmd::kFixed; | |
| 334 | |
| 335 void SetHeader() { | |
| 336 header.SetCmd<ValueType>(); | |
| 337 } | |
| 338 | |
| 339 void Init(int32 _offset) { | |
| 340 SetHeader(); | |
| 341 offset = _offset; | |
| 342 } | |
| 343 static void* Set(void* cmd, int32 _offset) { | |
| 344 static_cast<ValueType*>(cmd)->Init(_offset); | |
| 345 return NextCmdAddress<ValueType>(cmd); | |
| 346 } | |
| 347 | |
| 348 CommandHeader header; | |
| 349 int32 offset; | |
| 350 }; | |
| 351 | |
| 352 COMPILE_ASSERT(sizeof(CallRelative) == 8, Sizeof_CallRelative_is_not_8); | |
| 353 COMPILE_ASSERT(offsetof(CallRelative, header) == 0, | |
| 354 Offsetof_CallRelative_header_not_0); | |
| 355 COMPILE_ASSERT(offsetof(CallRelative, offset) == 4, | |
| 356 Offsetof_CallRelative_offset_4); | |
| 357 | |
| 358 // Returns from a subroutine called by the Call or CallRelative commands. | |
| 359 struct Return { | |
| 360 typedef Return ValueType; | |
| 361 static const CommandId kCmdId = kReturn; | |
| 362 static const cmd::ArgFlags kArgFlags = cmd::kFixed; | |
| 363 | |
| 364 void SetHeader() { | |
| 365 header.SetCmd<ValueType>(); | |
| 366 } | |
| 367 | |
| 368 void Init() { | |
| 369 SetHeader(); | |
| 370 } | |
| 371 static void* Set(void* cmd) { | |
| 372 static_cast<ValueType*>(cmd)->Init(); | |
| 373 return NextCmdAddress<ValueType>(cmd); | |
| 374 } | |
| 375 | |
| 376 CommandHeader header; | |
| 377 }; | |
| 378 | |
| 379 COMPILE_ASSERT(sizeof(Return) == 4, Sizeof_Return_is_not_4); | |
| 380 COMPILE_ASSERT(offsetof(Return, header) == 0, | |
| 381 Offsetof_Return_header_not_0); | |
| 382 | |
| 383 // Sets the size of a bucket for collecting data on the service side. | 263 // Sets the size of a bucket for collecting data on the service side. |
| 384 // This is a utility for gathering data on the service side so it can be used | 264 // This is a utility for gathering data on the service side so it can be used |
| 385 // all at once when some service side API is called. It removes the need to add | 265 // all at once when some service side API is called. It removes the need to add |
| 386 // special commands just to support a particular API. For example, any API | 266 // special commands just to support a particular API. For example, any API |
| 387 // command that needs a string needs a way to send that string to the API over | 267 // command that needs a string needs a way to send that string to the API over |
| 388 // the command buffers. While you can require that the command buffer or | 268 // the command buffers. While you can require that the command buffer or |
| 389 // transfer buffer be large enough to hold the largest string you can send, | 269 // transfer buffer be large enough to hold the largest string you can send, |
| 390 // using this command removes that restriction by letting you send smaller | 270 // using this command removes that restriction by letting you send smaller |
| 391 // pieces over and build up the data on the service side. | 271 // pieces over and build up the data on the service side. |
| 392 // | 272 // |
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| 671 Offsetof_GetBucketData_shared_memory_offset_not_20); | 551 Offsetof_GetBucketData_shared_memory_offset_not_20); |
| 672 | 552 |
| 673 } // namespace cmd | 553 } // namespace cmd |
| 674 | 554 |
| 675 #pragma pack(pop) | 555 #pragma pack(pop) |
| 676 | 556 |
| 677 } // namespace gpu | 557 } // namespace gpu |
| 678 | 558 |
| 679 #endif // GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ | 559 #endif // GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_ |
| 680 | 560 |
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