Splits the command buffers into common commands

and specific commands.

Common are things like Noop, SetToken, Jump, Gosub, return.

Specific are O3D etc...

Review URL: http://codereview.chromium.org/329046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30365 0039d316-1c4b-4281-b951-d872f2087c98

17 files changed, 488 insertions, 196 deletions

diff --git a/o3d/build/libs.gyp b/o3d/build/libs.gyp
index 747530f..122c6d6 100644
--- a/o3d/build/libs.gyp
+++ b/o3d/build/libs.gyp
@@ -57,6 +57,14 @@
                 '../../<(glewdir)/lib/glew32.lib',
               ],
             },
+            'copies': [
+              {
+                'destination': '<(PRODUCT_DIR)',
+                'files': [
+                  "../../<(glewdir)/bin/glew32.dll",
+                ]
+              },
+            ],
           },
         ],
       ],
diff --git a/o3d/command_buffer/client/cross/cmd_buffer_helper.h b/o3d/command_buffer/client/cross/cmd_buffer_helper.h
index e69e020..6d17f79 100644
--- a/o3d/command_buffer/client/cross/cmd_buffer_helper.h
+++ b/o3d/command_buffer/client/cross/cmd_buffer_helper.h
@@ -170,6 +170,19 @@ class CommandBufferHelper {
 
   parse_error::ParseError GetParseError();
 
+  // Common Commands
+  void Noop(uint32 skip_count) {
+    cmd::Noop& cmd = GetImmediateCmdSpace<cmd::Noop>(
+        skip_count * sizeof(CommandBufferEntry));
+    cmd.Init(skip_count);
+  }
+
+  void SetToken(uint32 token) {
+    cmd::SetToken& cmd = GetCmdSpace<cmd::SetToken>();
+    cmd.Init(token);
+  }
+
+
  private:
   // Waits until get changes, updating the value of get_.
   void WaitForGetChange();
diff --git a/o3d/command_buffer/client/cross/o3d_cmd_helper.h b/o3d/command_buffer/client/cross/o3d_cmd_helper.h
index c325766..59746da 100644
--- a/o3d/command_buffer/client/cross/o3d_cmd_helper.h
+++ b/o3d/command_buffer/client/cross/o3d_cmd_helper.h
@@ -57,17 +57,6 @@ class O3DCmdHelper : public CommandBufferHelper {
 
   // ------------------ Individual commands ----------------------
 
-  void Noop(uint32 skip_count) {
-    o3d::Noop& cmd = GetImmediateCmdSpace<o3d::Noop>(
-        skip_count * sizeof(CommandBufferEntry));
-    cmd.Init(skip_count);
-  }
-
-  void SetToken(uint32 token) {
-    o3d::SetToken& cmd = GetCmdSpace<o3d::SetToken>();
-    cmd.Init(token);
-  }
-
   void BeginFrame() {
     o3d::BeginFrame& cmd = GetCmdSpace<o3d::BeginFrame>();
     cmd.Init();
diff --git a/o3d/command_buffer/command_buffer.gyp b/o3d/command_buffer/command_buffer.gyp
index 82fe350..e6faceb 100644
--- a/o3d/command_buffer/command_buffer.gyp
+++ b/o3d/command_buffer/command_buffer.gyp
@@ -40,6 +40,7 @@
       'sources': [
         'common/cross/bitfield_helpers.h',
         'common/cross/cmd_buffer_common.h',
+        'common/cross/cmd_buffer_common.cc',
         'common/cross/o3d_cmd_format.h',
         'common/cross/o3d_cmd_format.cc',
         'common/cross/gapi_interface.h',
@@ -112,6 +113,8 @@
         'command_buffer_common',
       ],
       'sources': [
+        'service/cross/common_decoder.cc',
+        'service/cross/common_decoder.h',
         'service/cross/cmd_buffer_engine.h',
         'service/cross/cmd_parser.cc',
         'service/cross/cmd_parser.h',
diff --git a/o3d/command_buffer/common/cross/cmd_buffer_common.cc b/o3d/command_buffer/common/cross/cmd_buffer_common.cc
new file mode 100644
index 0000000..196a3c7
--- /dev/null
+++ b/o3d/command_buffer/common/cross/cmd_buffer_common.cc
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// This file contains the binary format definition of the command buffer and
+// command buffer commands.
+
+#include "command_buffer/common/cross/cmd_buffer_common.h"
+
+namespace o3d {
+namespace command_buffer {
+namespace cmd {
+
+const char* GetCommandName(CommandId command_id) {
+  static const char* const names[] = {
+  #define COMMON_COMMAND_BUFFER_CMD_OP(name) # name,
+
+  COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)
+
+  #undef COMMON_COMMAND_BUFFER_CMD_OP
+  };
+
+  int id = static_cast<int>(command_id);
+  return (id >= 0 && id < kNumCommands) ? names[id] : "*unknown-command*";
+}
+
+}  // namespace cmd
+}  // namespace command_buffer
+}  // namespace o3d
+
+
diff --git a/o3d/command_buffer/common/cross/cmd_buffer_common.h b/o3d/command_buffer/common/cross/cmd_buffer_common.h
index 87776d0..e071cb6b 100644
--- a/o3d/command_buffer/common/cross/cmd_buffer_common.h
+++ b/o3d/command_buffer/common/cross/cmd_buffer_common.h
@@ -171,7 +171,7 @@ namespace cmd {
   OP(SetToken)                      /*  1 */ \
 
 // Common commands.
-enum CommonCommandId {
+enum CommandId {
   #define COMMON_COMMAND_BUFFER_CMD_OP(name) k ## name,
 
   COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)
@@ -179,11 +179,66 @@ enum CommonCommandId {
   #undef COMMON_COMMAND_BUFFER_CMD_OP
 
   kNumCommands,
-  kLastCommonId = 1023,  // reserver 1024 spaces for common commands
+  kLastCommonId = 1023,  // reserve 1024 spaces for common commands.
 };
 
 COMPILE_ASSERT(kNumCommands - 1 <= kLastCommonId, Too_many_common_commands);
 
+const char* GetCommandName(CommandId id);
+
+struct Noop {
+  typedef Noop ValueType;
+  static const CommandId kCmdId = kNoop;
+  static const cmd::ArgFlags kArgFlags = cmd::kAtLeastN;
+
+  void SetHeader(uint32 skip_count) {
+    header.Init(kCmdId, skip_count + 1);
+  }
+
+  void Init(uint32 skip_count) {
+    SetHeader(skip_count);
+  }
+
+  static void* Set(void* cmd, uint32 skip_count) {
+    static_cast<ValueType*>(cmd)->Init(skip_count);
+    return NextImmediateCmdAddress<ValueType>(
+        cmd, skip_count * sizeof(CommandBufferEntry));  // NOLINT
+  }
+
+  CommandHeader header;
+};
+
+COMPILE_ASSERT(sizeof(Noop) == 4, Sizeof_Noop_is_not_4);
+COMPILE_ASSERT(offsetof(Noop, header) == 0, Offsetof_Noop_header_not_0);
+
+struct SetToken {
+  typedef SetToken ValueType;
+  static const CommandId kCmdId = kSetToken;
+  static const cmd::ArgFlags kArgFlags = cmd::kFixed;
+
+  void SetHeader() {
+    header.SetCmd<ValueType>();
+  }
+
+  void Init(uint32 _token) {
+    SetHeader();
+    token = _token;
+  }
+  static void* Set(void* cmd, uint32 token) {
+    static_cast<ValueType*>(cmd)->Init(token);
+    return NextCmdAddress<ValueType>(cmd);
+  }
+
+  CommandHeader header;
+  uint32 token;
+};
+
+COMPILE_ASSERT(sizeof(SetToken) == 8, Sizeof_SetToken_is_not_8);
+COMPILE_ASSERT(offsetof(SetToken, header) == 0,
+               Offsetof_SetToken_header_not_0);
+COMPILE_ASSERT(offsetof(SetToken, token) == 4,
+               Offsetof_SetToken_token_not_4);
+
 }  // namespace cmd
 
 O3D_POP_STRUCTURE_PACKING;
diff --git a/o3d/command_buffer/common/cross/o3d_cmd_format.cc b/o3d/command_buffer/common/cross/o3d_cmd_format.cc
index be6bef1..7102c3f 100644
--- a/o3d/command_buffer/common/cross/o3d_cmd_format.cc
+++ b/o3d/command_buffer/common/cross/o3d_cmd_format.cc
@@ -39,19 +39,18 @@ namespace o3d {
 namespace command_buffer {
 namespace o3d {
 
-const char* GetCommandName(CommandId id) {
+const char* GetCommandName(CommandId command_id) {
   static const char* const names[] = {
-
   #define O3D_COMMAND_BUFFER_CMD_OP(name) # name,
 
   O3D_COMMAND_BUFFER_CMDS(O3D_COMMAND_BUFFER_CMD_OP)
 
   #undef O3D_COMMAND_BUFFER_CMD_OP
-
   };
 
-  return (static_cast<int>(id) >= 0 && static_cast<int>(id) < kNumCommands) ?
-      names[id] : "*unknown-command*";
+  int id = static_cast<int>(command_id);
+  return (id > kStartPoint && id < kNumCommands) ?
+      names[id - kStartPoint - 1] : "*unknown-command*";
 }
 
 }  // namespace cmd
diff --git a/o3d/command_buffer/common/cross/o3d_cmd_format.h b/o3d/command_buffer/common/cross/o3d_cmd_format.h
index fb80230..b192e4d 100644
--- a/o3d/command_buffer/common/cross/o3d_cmd_format.h
+++ b/o3d/command_buffer/common/cross/o3d_cmd_format.h
@@ -74,75 +74,73 @@ namespace o3d {
 //
 // NOTE: THE ORDER OF THESE MUST NOT CHANGE (their id is derived by order)
 #define O3D_COMMAND_BUFFER_CMDS(OP) \
-  OP(Noop)                          /* 1024 */ \
-  OP(SetToken)                      /* 1025 */ \
-  OP(BeginFrame)                    /* 1026 */ \
-  OP(EndFrame)                      /* 1027 */ \
-  OP(Clear)                         /* 1028 */ \
-  OP(CreateVertexBuffer)            /* 1029 */ \
-  OP(DestroyVertexBuffer)           /* 1030 */ \
-  OP(SetVertexBufferData)           /* 1031 */ \
-  OP(SetVertexBufferDataImmediate)  /* 1032 */ \
-  OP(GetVertexBufferData)           /* 1033 */ \
-  OP(CreateIndexBuffer)             /* 1034 */ \
-  OP(DestroyIndexBuffer)            /* 1035 */ \
-  OP(SetIndexBufferData)            /* 1036 */ \
-  OP(SetIndexBufferDataImmediate)   /* 1037 */ \
-  OP(GetIndexBufferData)            /* 1038 */ \
-  OP(CreateVertexStruct)            /* 1039 */ \
-  OP(DestroyVertexStruct)           /* 1040 */ \
-  OP(SetVertexInput)                /* 1041 */ \
-  OP(SetVertexStruct)               /* 1042 */ \
-  OP(Draw)                          /* 1043 */ \
-  OP(DrawIndexed)                   /* 1044 */ \
-  OP(CreateEffect)                  /* 1045 */ \
-  OP(CreateEffectImmediate)         /* 1046 */ \
-  OP(DestroyEffect)                 /* 1047 */ \
-  OP(SetEffect)                     /* 1048 */ \
-  OP(GetParamCount)                 /* 1049 */ \
-  OP(CreateParam)                   /* 1050 */ \
-  OP(CreateParamByName)             /* 1051 */ \
-  OP(CreateParamByNameImmediate)    /* 1052 */ \
-  OP(DestroyParam)                  /* 1053 */ \
-  OP(SetParamData)                  /* 1054 */ \
-  OP(SetParamDataImmediate)         /* 1055 */ \
-  OP(GetParamDesc)                  /* 1056 */ \
-  OP(GetStreamCount)                /* 1057 */ \
-  OP(GetStreamDesc)                 /* 1058 */ \
-  OP(DestroyTexture)                /* 1059 */ \
-  OP(CreateTexture2d)               /* 1060 */ \
-  OP(CreateTexture3d)               /* 1061 */ \
-  OP(CreateTextureCube)             /* 1062 */ \
-  OP(SetTextureData)                /* 1063 */ \
-  OP(SetTextureDataImmediate)       /* 1064 */ \
-  OP(GetTextureData)                /* 1065 */ \
-  OP(CreateSampler)                 /* 1066 */ \
-  OP(DestroySampler)                /* 1067 */ \
-  OP(SetSamplerStates)              /* 1068 */ \
-  OP(SetSamplerBorderColor)         /* 1069 */ \
-  OP(SetSamplerTexture)             /* 1070 */ \
-  OP(SetViewport)                   /* 1071 */ \
-  OP(SetScissor)                    /* 1072 */ \
-  OP(SetPointLineRaster)            /* 1073 */ \
-  OP(SetPolygonRaster)              /* 1074 */ \
-  OP(SetPolygonOffset)              /* 1075 */ \
-  OP(SetAlphaTest)                  /* 1076 */ \
-  OP(SetDepthTest)                  /* 1077 */ \
-  OP(SetStencilTest)                /* 1078 */ \
-  OP(SetBlending)                   /* 1079 */ \
-  OP(SetBlendingColor)              /* 1080 */ \
-  OP(SetColorWrite)                 /* 1081 */ \
-  OP(CreateRenderSurface)           /* 1082 */ \
-  OP(DestroyRenderSurface)          /* 1083 */ \
-  OP(CreateDepthSurface)            /* 1084 */ \
-  OP(DestroyDepthSurface)           /* 1085 */ \
-  OP(SetRenderSurface)              /* 1086 */ \
-  OP(SetBackSurfaces)               /* 1087 */ \
+  OP(BeginFrame)                    /* 1024 */ \
+  OP(EndFrame)                      /* 1025 */ \
+  OP(Clear)                         /* 1026 */ \
+  OP(CreateVertexBuffer)            /* 1027 */ \
+  OP(DestroyVertexBuffer)           /* 1028 */ \
+  OP(SetVertexBufferData)           /* 1029 */ \
+  OP(SetVertexBufferDataImmediate)  /* 1030 */ \
+  OP(GetVertexBufferData)           /* 1031 */ \
+  OP(CreateIndexBuffer)             /* 1032 */ \
+  OP(DestroyIndexBuffer)            /* 1033 */ \
+  OP(SetIndexBufferData)            /* 1034 */ \
+  OP(SetIndexBufferDataImmediate)   /* 1035 */ \
+  OP(GetIndexBufferData)            /* 1036 */ \
+  OP(CreateVertexStruct)            /* 1037 */ \
+  OP(DestroyVertexStruct)           /* 1038 */ \
+  OP(SetVertexInput)                /* 1039 */ \
+  OP(SetVertexStruct)               /* 1040 */ \
+  OP(Draw)                          /* 1041 */ \
+  OP(DrawIndexed)                   /* 1042 */ \
+  OP(CreateEffect)                  /* 1043 */ \
+  OP(CreateEffectImmediate)         /* 1044 */ \
+  OP(DestroyEffect)                 /* 1045 */ \
+  OP(SetEffect)                     /* 1046 */ \
+  OP(GetParamCount)                 /* 1047 */ \
+  OP(CreateParam)                   /* 1048 */ \
+  OP(CreateParamByName)             /* 1049 */ \
+  OP(CreateParamByNameImmediate)    /* 1050 */ \
+  OP(DestroyParam)                  /* 1051 */ \
+  OP(SetParamData)                  /* 1052 */ \
+  OP(SetParamDataImmediate)         /* 1053 */ \
+  OP(GetParamDesc)                  /* 1054 */ \
+  OP(GetStreamCount)                /* 1055 */ \
+  OP(GetStreamDesc)                 /* 1056 */ \
+  OP(DestroyTexture)                /* 1057 */ \
+  OP(CreateTexture2d)               /* 1058 */ \
+  OP(CreateTexture3d)               /* 1059 */ \
+  OP(CreateTextureCube)             /* 1060 */ \
+  OP(SetTextureData)                /* 1061 */ \
+  OP(SetTextureDataImmediate)       /* 1062 */ \
+  OP(GetTextureData)                /* 1063 */ \
+  OP(CreateSampler)                 /* 1064 */ \
+  OP(DestroySampler)                /* 1065 */ \
+  OP(SetSamplerStates)              /* 1066 */ \
+  OP(SetSamplerBorderColor)         /* 1067 */ \
+  OP(SetSamplerTexture)             /* 1068 */ \
+  OP(SetViewport)                   /* 1069 */ \
+  OP(SetScissor)                    /* 1070 */ \
+  OP(SetPointLineRaster)            /* 1071 */ \
+  OP(SetPolygonRaster)              /* 1072 */ \
+  OP(SetPolygonOffset)              /* 1073 */ \
+  OP(SetAlphaTest)                  /* 1074 */ \
+  OP(SetDepthTest)                  /* 1075 */ \
+  OP(SetStencilTest)                /* 1076 */ \
+  OP(SetBlending)                   /* 1077 */ \
+  OP(SetBlendingColor)              /* 1078 */ \
+  OP(SetColorWrite)                 /* 1079 */ \
+  OP(CreateRenderSurface)           /* 1080 */ \
+  OP(DestroyRenderSurface)          /* 1081 */ \
+  OP(CreateDepthSurface)            /* 1082 */ \
+  OP(DestroyDepthSurface)           /* 1083 */ \
+  OP(SetRenderSurface)              /* 1084 */ \
+  OP(SetBackSurfaces)               /* 1085 */ \
 
 
 // GAPI commands.
 enum CommandId {
-//  kStartPoint = cmd::kLastCommonId,  // All O3D commands start after this.
+  kStartPoint = cmd::kLastCommonId,  // All O3D commands start after this.
   #define O3D_COMMAND_BUFFER_CMD_OP(name) k ## name,
 
   O3D_COMMAND_BUFFER_CMDS(O3D_COMMAND_BUFFER_CMD_OP)
@@ -247,59 +245,6 @@ const char* GetCommandName(CommandId id);
 // structures.
 O3D_PUSH_STRUCTURE_PACKING_1;
 
-struct Noop {
-  typedef Noop ValueType;
-  static const CommandId kCmdId = kNoop;
-  static const cmd::ArgFlags kArgFlags = cmd::kAtLeastN;
-
-  void SetHeader(uint32 skip_count) {
-    header.Init(kCmdId, skip_count + 1);
-  }
-
-  void Init(uint32 skip_count) {
-    SetHeader(skip_count);
-  }
-
-  static void* Set(void* cmd, uint32 skip_count) {
-    static_cast<ValueType*>(cmd)->Init(skip_count);
-    return NextImmediateCmdAddress<ValueType>(
-        cmd, skip_count * sizeof(CommandBufferEntry));  // NOLINT
-  }
-
-  CommandHeader header;
-};
-
-COMPILE_ASSERT(sizeof(Noop) == 4, Sizeof_Noop_is_not_4);
-COMPILE_ASSERT(offsetof(Noop, header) == 0, Offsetof_Noop_header_not_0);
-
-struct SetToken {
-  typedef SetToken ValueType;
-  static const CommandId kCmdId = kSetToken;
-  static const cmd::ArgFlags kArgFlags = cmd::kFixed;
-
-  void SetHeader() {
-    header.SetCmd<ValueType>();
-  }
-
-  void Init(uint32 _token) {
-    SetHeader();
-    token = _token;
-  }
-  static void* Set(void* cmd, uint32 token) {
-    static_cast<ValueType*>(cmd)->Init(token);
-    return NextCmdAddress<ValueType>(cmd);
-  }
-
-  CommandHeader header;
-  uint32 token;
-};
-
-COMPILE_ASSERT(sizeof(SetToken) == 8, Sizeof_SetToken_is_not_8);
-COMPILE_ASSERT(offsetof(SetToken, header) == 0,
-               Offsetof_SetToken_header_not_0);
-COMPILE_ASSERT(offsetof(SetToken, token) == 4,
-               Offsetof_SetToken_token_not_4);
-
 struct BeginFrame {
   typedef BeginFrame ValueType;
   static const CommandId kCmdId = kBeginFrame;
diff --git a/o3d/command_buffer/service/cross/cmd_parser.cc b/o3d/command_buffer/service/cross/cmd_parser.cc
index 26eacbf..17c8a0b 100644
--- a/o3d/command_buffer/service/cross/cmd_parser.cc
+++ b/o3d/command_buffer/service/cross/cmd_parser.cc
@@ -87,14 +87,18 @@ parse_error::ParseError CommandParser::ProcessCommand() {
   //     It seems like we need an official way to turn on a debug mode and
   //     get these errors.
   if (result != parse_error::kParseNoError) {
-    DLOG(INFO)
-        << "Error: " << result << " for Command "
-        << o3d::GetCommandName(static_cast<o3d::CommandId>(header.command));
+    ReportError(header.command, result);
   }
   get_ = (get + header.size) % entry_count_;
   return result;
 }
 
+void CommandParser::ReportError(unsigned int command_id,
+                                parse_error::ParseError result) {
+  DLOG(INFO) << "Error: " << result << " for Command "
+             << handler_->GetCommandName(command_id);
+}
+
 // Processes all the commands, while the buffer is not empty. Stop if an error
 // is encountered.
 parse_error::ParseError CommandParser::ProcessAllCommands() {
diff --git a/o3d/command_buffer/service/cross/cmd_parser.h b/o3d/command_buffer/service/cross/cmd_parser.h
index ea003d2..1b6268c 100644
--- a/o3d/command_buffer/service/cross/cmd_parser.h
+++ b/o3d/command_buffer/service/cross/cmd_parser.h
@@ -77,6 +77,9 @@ class CommandParser {
   // Processes all commands until get == put.
   parse_error::ParseError ProcessAllCommands();
 
+  // Reports an error.
+  void ReportError(unsigned int command_id, parse_error::ParseError result);
+
  private:
   CommandBufferOffset get_;
   CommandBufferOffset put_;
@@ -104,6 +107,9 @@ class AsyncAPIInterface {
       unsigned int command,
       unsigned int arg_count,
       const void* cmd_data) = 0;
+
+  // Returns a name for a command. Useful for logging / debuging.
+  virtual const char* GetCommandName(unsigned int command_id) const = 0;
 };
 
 }  // namespace command_buffer
diff --git a/o3d/command_buffer/service/cross/common_decoder.cc b/o3d/command_buffer/service/cross/common_decoder.cc
new file mode 100644
index 0000000..a041469
--- /dev/null
+++ b/o3d/command_buffer/service/cross/common_decoder.cc
@@ -0,0 +1,126 @@
+/*

+ * Copyright 2009, Google Inc.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are

+ * met:

+ *

+ *     * Redistributions of source code must retain the above copyright

+ * notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above

+ * copyright notice, this list of conditions and the following disclaimer

+ * in the documentation and/or other materials provided with the

+ * distribution.

+ *     * Neither the name of Google Inc. nor the names of its

+ * contributors may be used to endorse or promote products derived from

+ * this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+

+#include "command_buffer/service/cross/common_decoder.h"

+#include "command_buffer/service/cross/cmd_buffer_engine.h"

+

+namespace o3d {

+namespace command_buffer {

+

+void* CommonDecoder::GetAddressAndCheckSize(unsigned int shm_id,

+                                            unsigned int offset,

+                                            unsigned int size) {

+  void* shm_addr = engine_->GetSharedMemoryAddress(shm_id);

+  if (!shm_addr) return NULL;

+  size_t shm_size = engine_->GetSharedMemorySize(shm_id);

+  unsigned int end = offset + size;

+  if (end > shm_size || end < offset) {

+    return NULL;

+  }

+  return static_cast<int8 *>(shm_addr) + offset;

+}

+

+const char* CommonDecoder::GetCommonCommandName(

+    cmd::CommandId command_id) const {

+  return cmd::GetCommandName(command_id);

+}

+

+namespace {

+

+// A struct to hold info about each command.

+struct CommandInfo {

+  int arg_flags;  // How to handle the arguments for this command

+  int arg_count;  // How many arguments are expected for this command.

+};

+

+// A table of CommandInfo for all the commands.

+const CommandInfo g_command_info[] = {

+  #define COMMON_COMMAND_BUFFER_CMD_OP(name) {                           \

+    cmd::name::kArgFlags,                                                \

+    sizeof(cmd::name) / sizeof(CommandBufferEntry) - 1, },  /* NOLINT */ \

+

+  COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)

+

+  #undef COMMON_COMMAND_BUFFER_CMD_OP

+};

+

+}  // anonymous namespace.

+

+// Decode command with its arguments, and call the corresponding method.

+// Note: args is a pointer to the command buffer. As such, it could be changed

+// by a (malicious) client at any time, so if validation has to happen, it

+// should operate on a copy of them.

+parse_error::ParseError CommonDecoder::DoCommonCommand(

+    unsigned int command,

+    unsigned int arg_count,

+    const void* cmd_data) {

+  if (command < arraysize(g_command_info)) {

+    const CommandInfo& info = g_command_info[command];

+    unsigned int info_arg_count = static_cast<unsigned int>(info.arg_count);

+    if ((info.arg_flags == cmd::kFixed && arg_count == info_arg_count) ||

+        (info.arg_flags == cmd::kAtLeastN && arg_count >= info_arg_count)) {

+      switch (command) {

+        #define COMMON_COMMAND_BUFFER_CMD_OP(name)                      \

+          case cmd::name::kCmdId:                                       \

+            return Handle ## name(                                      \

+                arg_count,                                              \

+                *static_cast<const cmd::name*>(cmd_data));              \

+

+        COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)

+

+        #undef COMMON_COMMAND_BUFFER_CMD_OP

+      }

+    } else {

+      return parse_error::kParseInvalidArguments;

+    }

+  }

+  return DoCommonCommand(command, arg_count, cmd_data);

+  return parse_error::kParseUnknownCommand;

+}

+

+parse_error::ParseError CommonDecoder::HandleNoop(

+    uint32 arg_count,

+    const cmd::Noop& args) {

+  return parse_error::kParseNoError;

+}

+

+parse_error::ParseError CommonDecoder::HandleSetToken(

+    uint32 arg_count,

+    const cmd::SetToken& args) {

+  engine_->set_token(args.token);

+  return parse_error::kParseNoError;

+}

+

+}  // namespace command_buffer

+}  // namespace o3d

+

+

+

diff --git a/o3d/command_buffer/service/cross/common_decoder.h b/o3d/command_buffer/service/cross/common_decoder.h
new file mode 100644
index 0000000..3180417
--- /dev/null
+++ b/o3d/command_buffer/service/cross/common_decoder.h
@@ -0,0 +1,110 @@
+/*

+ * Copyright 2009, Google Inc.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are

+ * met:

+ *

+ *     * Redistributions of source code must retain the above copyright

+ * notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above

+ * copyright notice, this list of conditions and the following disclaimer

+ * in the documentation and/or other materials provided with the

+ * distribution.

+ *     * Neither the name of Google Inc. nor the names of its

+ * contributors may be used to endorse or promote products derived from

+ * this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+

+#ifndef O3D_COMMAND_BUFFER_SERVICE_CROSS_COMMON_DECODER_H_

+#define O3D_COMMAND_BUFFER_SERVICE_CROSS_COMMON_DECODER_H_

+

+#include "core/cross/types.h"

+#include "command_buffer/service/cross/cmd_parser.h"

+

+namespace o3d {

+namespace command_buffer {

+

+class CommandBufferEngine;

+

+// This class is a helper base class for implementing the common parts of the

+// o3d/gl2 command buffer decoder.

+class CommonDecoder : public AsyncAPIInterface {

+ public:

+  typedef parse_error::ParseError ParseError;

+

+  CommonDecoder() : engine_(NULL) {

+  }

+  virtual ~CommonDecoder() {

+  }

+

+  // Sets the engine, to get shared memory buffers from, and to set the token

+  // to.

+  void set_engine(CommandBufferEngine* engine) {

+    engine_ = engine;

+  }

+

+ protected:

+  // Executes a common command.

+  // Parameters:

+  //    command: the command index.

+  //    arg_count: the number of CommandBufferEntry arguments.

+  //    cmd_data: the command data.

+  // Returns:

+  //   parse_error::NO_ERROR if no error was found, one of

+  //   parse_error::ParseError otherwise.

+  parse_error::ParseError DoCommonCommand(

+      unsigned int command,

+      unsigned int arg_count,

+      const void* cmd_data);

+

+  // Gets the address of shared memory data, given a shared memory ID and an

+  // offset. Also checks that the size is consistent with the shared memory

+  // size.

+  // Parameters:

+  //   shm_id: the id of the shared memory buffer.

+  //   offset: the offset of the data in the shared memory buffer.

+  //   size: the size of the data.

+  // Returns:

+  //   NULL if shm_id isn't a valid shared memory buffer ID or if the size

+  //   check fails. Return a pointer to the data otherwise.

+  void* GetAddressAndCheckSize(unsigned int shm_id,

+                               unsigned int offset,

+                               unsigned int size);

+

+  // Gets an name for a common command.

+  const char* GetCommonCommandName(cmd::CommandId command_id) const;

+

+ private:

+  // Generate a member function prototype for each command in an automated and

+  // typesafe way.

+  #define COMMON_COMMAND_BUFFER_CMD_OP(name)             \

+     parse_error::ParseError Handle ## name(             \

+       unsigned int arg_count,                           \

+       const cmd::name& args);                           \

+

+  COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)

+

+  #undef COMMON_COMMAND_BUFFER_CMD_OP

+

+  CommandBufferEngine* engine_;

+};

+

+}  // namespace command_buffer

+}  // namespace o3d

+

+#endif  // O3D_COMMAND_BUFFER_SERVICE_CROSS_COMMON_DECODER_H_

+

diff --git a/o3d/command_buffer/service/cross/gapi_decoder.cc b/o3d/command_buffer/service/cross/gapi_decoder.cc
index 15a797f..2348762 100644
--- a/o3d/command_buffer/service/cross/gapi_decoder.cc
+++ b/o3d/command_buffer/service/cross/gapi_decoder.cc
@@ -36,7 +36,6 @@
 #include "base/cross/bits.h"
 #include "command_buffer/common/cross/gapi_interface.h"
 #include "command_buffer/service/cross/gapi_decoder.h"
-#include "command_buffer/service/cross/cmd_buffer_engine.h"
 
 namespace o3d {
 namespace command_buffer {
@@ -78,8 +77,7 @@ const CommandInfo g_command_info[] = {
 
 }  // anonymous namespace.
 
-// Decode command with its arguments, and call the corresponding GAPIInterface
-// method.
+// Decode command with its arguments, and call the corresponding method.
 // Note: args is a pointer to the command buffer. As such, it could be changed
 // by a (malicious) client at any time, so if validation has to happen, it
 // should operate on a copy of them.
@@ -87,9 +85,10 @@ parse_error::ParseError GAPIDecoder::DoCommand(
     unsigned int command,
     unsigned int arg_count,
     const void* cmd_data) {
-  if (command < arraysize(g_command_info)) {
-    const CommandInfo& info = g_command_info[command];
-  unsigned int info_arg_count = static_cast<unsigned int>(info.arg_count);
+  unsigned int command_index = command - kStartPoint - 1;
+  if (command_index < arraysize(g_command_info)) {
+    const CommandInfo& info = g_command_info[command_index];
+    unsigned int info_arg_count = static_cast<unsigned int>(info.arg_count);
     if ((info.arg_flags == cmd::kFixed && arg_count == info_arg_count) ||
         (info.arg_flags == cmd::kAtLeastN && arg_count >= info_arg_count)) {
       switch (command) {
@@ -107,30 +106,16 @@ parse_error::ParseError GAPIDecoder::DoCommand(
       return parse_error::kParseInvalidArguments;
     }
   }
+  return DoCommonCommand(command, arg_count, cmd_data);
   return parse_error::kParseUnknownCommand;
 }
 
-void *GAPIDecoder::GetAddressAndCheckSize(unsigned int shm_id,
-                                          unsigned int offset,
-                                          unsigned int size) {
-  void * shm_addr = engine_->GetSharedMemoryAddress(shm_id);
-  if (!shm_addr) return NULL;
-  size_t shm_size = engine_->GetSharedMemorySize(shm_id);
-  if (offset + size > shm_size) return NULL;
-  return static_cast<char *>(shm_addr) + offset;
-}
-
-parse_error::ParseError GAPIDecoder::HandleNoop(
-    uint32 arg_count,
-    const Noop& args) {
-  return parse_error::kParseNoError;
-}
-
-parse_error::ParseError GAPIDecoder::HandleSetToken(
-    uint32 arg_count,
-    const SetToken& args) {
-  engine_->set_token(args.token);
-  return parse_error::kParseNoError;
+  // Overridden from AsyncAPIInterface.
+const char* GAPIDecoder::GetCommandName(unsigned int command_id) const {
+  if (command_id > kStartPoint && command_id < kNumCommands) {
+    return o3d::GetCommandName(static_cast<CommandId>(command_id));
+  }
+  return GetCommonCommandName(static_cast<cmd::CommandId>(command_id));
 }
 
 parse_error::ParseError GAPIDecoder::HandleBeginFrame(
diff --git a/o3d/command_buffer/service/cross/gapi_decoder.h b/o3d/command_buffer/service/cross/gapi_decoder.h
index a17f3ee..26dfa79 100644
--- a/o3d/command_buffer/service/cross/gapi_decoder.h
+++ b/o3d/command_buffer/service/cross/gapi_decoder.h
@@ -36,25 +36,22 @@
 #define O3D_COMMAND_BUFFER_SERVICE_CROSS_GAPI_DECODER_H_
 
 #include "core/cross/types.h"
-#include "command_buffer/service/cross/cmd_parser.h"
+#include "command_buffer/service/cross/common_decoder.h"
 #include "command_buffer/common/cross/o3d_cmd_format.h"
 
 namespace o3d {
 namespace command_buffer {
-
-class CommandBufferEngine;
-
 namespace o3d {
 
 class GAPIInterface;
 
 // This class implements the AsyncAPIInterface interface, decoding GAPI
 // commands and sending them to a GAPI interface.
-class GAPIDecoder : public AsyncAPIInterface {
+class GAPIDecoder : public CommonDecoder {
  public:
   typedef parse_error::ParseError ParseError;
 
-  explicit GAPIDecoder(GAPIInterface *gapi) : gapi_(gapi), engine_(NULL) {}
+  explicit GAPIDecoder(GAPIInterface *gapi) : gapi_(gapi) {}
   virtual ~GAPIDecoder() {}
 
   // Overridden from AsyncAPIInterface.
@@ -62,24 +59,10 @@ class GAPIDecoder : public AsyncAPIInterface {
                                unsigned int arg_count,
                                const void* args);
 
-  // Sets the engine, to get shared memory buffers from, and to set the token
-  // to.
-  void set_engine(CommandBufferEngine *engine) { engine_ = engine; }
- private:
-  // Gets the address of shared memory data, given a shared memory ID and an
-  // offset. Also checks that the size is consistent with the shared memory
-  // size.
-  // Parameters:
-  //   shm_id: the id of the shared memory buffer.
-  //   offset: the offset of the data in the shared memory buffer.
-  //   size: the size of the data.
-  // Returns:
-  //   NULL if shm_id isn't a valid shared memory buffer ID or if the size
-  //   check fails. Return a pointer to the data otherwise.
-  void *GetAddressAndCheckSize(unsigned int shm_id,
-                               unsigned int offset,
-                               unsigned int size);
+  // Overridden from AsyncAPIInterface.
+  virtual const char* GetCommandName(unsigned int command_id) const;
 
+ private:
   // Generate a member function prototype for each command in an automated and
   // typesafe way.
   #define O3D_COMMAND_BUFFER_CMD_OP(name) \
@@ -92,7 +75,6 @@ class GAPIDecoder : public AsyncAPIInterface {
   #undef O3D_COMMAND_BUFFER_CMD_OP
 
   GAPIInterface *gapi_;
-  CommandBufferEngine *engine_;
 };
 
 }  // namespace o3d
diff --git a/o3d/command_buffer/service/cross/gl/gapi_gl.cc b/o3d/command_buffer/service/cross/gl/gapi_gl.cc
index f6761e0..721e2c4 100644
--- a/o3d/command_buffer/service/cross/gl/gapi_gl.cc
+++ b/o3d/command_buffer/service/cross/gl/gapi_gl.cc
@@ -44,11 +44,16 @@ namespace command_buffer {
 namespace o3d {
 
 GAPIGL::GAPIGL()
+    : cg_context_(NULL),
 #ifdef OS_LINUX
-    : window_(NULL),
+      window_(NULL),
 #endif
-    : anti_aliased_(false),
-      cg_context_(NULL),
+#ifdef OS_WIN
+      hwnd_(NULL),
+      device_context_(NULL),
+      gl_context_(NULL),
+#endif
+      anti_aliased_(false),
       current_vertex_struct_(kInvalidResource),
       validate_streams_(true),
       max_vertices_(0),
@@ -328,7 +333,6 @@ bool GAPIGL::InitGlew() {
   // present.
   if (!GLEW_VERSION_2_0) {
     DLOG(ERROR) << "GL drivers do not have OpenGL 2.0 functionality.";
-    return false;
   }
 
   bool extensions_found = true;
diff --git a/o3d/command_buffer/service/cross/gl/gapi_gl.h b/o3d/command_buffer/service/cross/gl/gapi_gl.h
index af8a406..7c2d98e 100644
--- a/o3d/command_buffer/service/cross/gl/gapi_gl.h
+++ b/o3d/command_buffer/service/cross/gl/gapi_gl.h
@@ -427,6 +427,8 @@ class GAPIGL : public GAPIInterface {
   // programs, and updates parameters if needed.
   bool ValidateEffect();
 
+  CGcontext cg_context_;
+
 #if defined(OS_LINUX)
   XWindowWrapper *window_;
 #elif defined(OS_WIN)
@@ -436,8 +438,6 @@ class GAPIGL : public GAPIInterface {
   HGLRC gl_context_;
 #endif
 
-  CGcontext cg_context_;
-
   bool anti_aliased_;
   ResourceId current_vertex_struct_;
   bool validate_streams_;
diff --git a/o3d/command_buffer/service/cross/mocks.h b/o3d/command_buffer/service/cross/mocks.h
index abacb5b..1c2579d 100644
--- a/o3d/command_buffer/service/cross/mocks.h
+++ b/o3d/command_buffer/service/cross/mocks.h
@@ -82,6 +82,10 @@ class AsyncAPIMock : public AsyncAPIInterface {
       unsigned int arg_count,
       const void* cmd_data));
 
+  const char* GetCommandName(unsigned int command_id) const {
+    return "";
+  };
+
   // Sets the engine, to forward SetToken commands to it.
   void set_engine(CommandBufferEngine *engine) { engine_ = engine; }