command_buffer: Table based command dispatch.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 1646 matching lines @@
         !surface_->SetBackbufferAllocation(true))
       return error::kLostContext;
     return error::kNoError;
   }
 
   void ProcessPendingReadPixels();
   void FinishReadPixels(const cmds::ReadPixels& c, GLuint buffer);
 
   // Generate a member function prototype for each command in an automated and
   // typesafe way.
-  #define GLES2_CMD_OP(name) \
-     Error Handle ## name(             \
-       uint32 immediate_data_size,     \
-       const cmds::name& args);        \
+#define GLES2_CMD_OP(name) \
+  Error Handle##name(uint32 immediate_data_size, const void* data);
 
   GLES2_COMMAND_LIST(GLES2_CMD_OP)
 
   #undef GLES2_CMD_OP
 
   // The GL context this decoder renders to on behalf of the client.
   scoped_refptr<gfx::GLSurface> surface_;
   scoped_refptr<gfx::GLContext> context_;
 
   // The ContextGroup for this decoder uses to track resources.
@@ skipping 2006 matching lines @@
   if (offscreen_resolved_frame_buffer_.get())
     offscreen_resolved_frame_buffer_->Destroy();
   if (offscreen_resolved_color_texture_.get())
     offscreen_resolved_color_texture_->Destroy();
   offscreen_resolved_color_texture_.reset();
   offscreen_resolved_frame_buffer_.reset();
 
   return true;
 }
 
-error::Error GLES2DecoderImpl::HandleResizeCHROMIUM(
-    uint32 immediate_data_size, const cmds::ResizeCHROMIUM& c) {
+error::Error GLES2DecoderImpl::HandleResizeCHROMIUM(uint32 immediate_data_size,
+                                                    const void* cmd_data) {
+  const gles2::cmds::ResizeCHROMIUM& c =
+      *static_cast<const gles2::cmds::ResizeCHROMIUM*>(cmd_data);
   if (!offscreen_target_frame_buffer_.get() && surface_->DeferDraws())
     return error::kDeferCommandUntilLater;
 
   GLuint width = static_cast<GLuint>(c.width);
   GLuint height = static_cast<GLuint>(c.height);
   GLfloat scale_factor = c.scale_factor;
   TRACE_EVENT2("gpu", "glResizeChromium", "width", width, "height", height);
 
   width = std::max(1U, width);
   height = std::max(1U, height);
@@ skipping 56 matching lines @@
       bool doing_gpu_trace = false;
       if (gpu_trace_commands_) {
         if (CMD_FLAG_GET_TRACE_LEVEL(info.cmd_flags) <= gpu_trace_level_) {
           doing_gpu_trace = true;
           gpu_tracer_->Begin(GetCommandName(command), kTraceDecoder);
         }
       }
 
       uint32 immediate_data_size =
           (arg_count - info_arg_count) * sizeof(CommandBufferEntry);  // NOLINT
-      switch (command) {
-        #define GLES2_CMD_OP(name)                                 \
-          case cmds::name::kCmdId:                                 \
-            result = Handle ## name(                               \
-                immediate_data_size,                               \
-                *static_cast<const gles2::cmds::name*>(cmd_data)); \
-            break;                                                 \
 
-        GLES2_COMMAND_LIST(GLES2_CMD_OP)
-        #undef GLES2_CMD_OP
-      }
+      typedef gpu::gles2::GLES2Decoder::Error (GLES2DecoderImpl::*CmdHandler)(
+          uint32 immediate_data_size, const void* data);
+
+      static CmdHandler cmd_handlers[] = {

[piman, 2014/09/05 22:10:16]

nit: can we fold this into g_command_info? It seems it would be a little more
cache friendly (and slightly less code).

[vmiura, 2014/09/05 22:35:44]

Done.

+#define GLES2_CMD_OP(name) &GLES2DecoderImpl::Handle##name,
+          GLES2_COMMAND_LIST(GLES2_CMD_OP)
+#undef GLES2_CMD_OP
+      };
+
+      result =
+          (this->*cmd_handlers[command_index])(immediate_data_size, cmd_data);
 
       if (doing_gpu_trace)
         gpu_tracer_->End(kTraceDecoder);
 
       if (debug()) {
         GLenum error;
         while ((error = glGetError()) != GL_NO_ERROR) {
           LOG(ERROR) << "[" << logger_.GetLogPrefix() << "] "
                      << "GL ERROR: " << GLES2Util::GetStringEnum(error) << " : "
                      << GetCommandName(command);
@@ skipping 1005 matching lines @@
   Program* program = GetProgramInfoNotShader(
       program_id, "glBindAttribLocation");
   if (!program) {
     return;
   }
   program->SetAttribLocationBinding(name, static_cast<GLint>(index));
   glBindAttribLocation(program->service_id(), index, name);
 }
 
 error::Error GLES2DecoderImpl::HandleBindAttribLocationBucket(
-    uint32 immediate_data_size, const cmds::BindAttribLocationBucket& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::BindAttribLocationBucket& c =
+      *static_cast<const gles2::cmds::BindAttribLocationBucket*>(cmd_data);
   GLuint program = static_cast<GLuint>(c.program);
   GLuint index = static_cast<GLuint>(c.index);
   Bucket* bucket = GetBucket(c.name_bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   std::string name_str;
   if (!bucket->GetAsString(&name_str)) {
     return error::kInvalidArguments;
   }
@@ skipping 30 matching lines @@
   }
   if (!program->SetUniformLocationBinding(name, location)) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_VALUE,
         "glBindUniformLocationCHROMIUM", "location out of range");
   }
 }
 
 error::Error GLES2DecoderImpl::HandleBindUniformLocationCHROMIUMBucket(
     uint32 immediate_data_size,
-    const cmds::BindUniformLocationCHROMIUMBucket& c) {
+    const void* cmd_data) {
+  const gles2::cmds::BindUniformLocationCHROMIUMBucket& c =
+      *static_cast<const gles2::cmds::BindUniformLocationCHROMIUMBucket*>(
+          cmd_data);
   GLuint program = static_cast<GLuint>(c.program);
   GLint location = static_cast<GLint>(c.location);
   Bucket* bucket = GetBucket(c.name_bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   std::string name_str;
   if (!bucket->GetAsString(&name_str)) {
     return error::kInvalidArguments;
   }
   DoBindUniformLocationCHROMIUM(program, location, name_str.c_str());
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleDeleteShader(
-    uint32 immediate_data_size, const cmds::DeleteShader& c) {
+error::Error GLES2DecoderImpl::HandleDeleteShader(uint32 immediate_data_size,
+                                                  const void* cmd_data) {
+  const gles2::cmds::DeleteShader& c =
+      *static_cast<const gles2::cmds::DeleteShader*>(cmd_data);
   GLuint client_id = c.shader;
   if (client_id) {
     Shader* shader = GetShader(client_id);
     if (shader) {
       if (!shader->IsDeleted()) {
         glDeleteShader(shader->service_id());
         shader_manager()->MarkAsDeleted(shader);
       }
     } else {
       LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glDeleteShader", "unknown shader");
     }
   }
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleDeleteProgram(
-    uint32 immediate_data_size, const cmds::DeleteProgram& c) {
+error::Error GLES2DecoderImpl::HandleDeleteProgram(uint32 immediate_data_size,
+                                                   const void* cmd_data) {
+  const gles2::cmds::DeleteProgram& c =
+      *static_cast<const gles2::cmds::DeleteProgram*>(cmd_data);
   GLuint client_id = c.program;
   if (client_id) {
     Program* program = GetProgram(client_id);
     if (program) {
       if (!program->IsDeleted()) {
         program_manager()->MarkAsDeleted(shader_manager(), program);
       }
     } else {
       LOCAL_SET_GL_ERROR(
           GL_INVALID_VALUE, "glDeleteProgram", "unknown program");
     }
   }
   return error::kNoError;
 }
 
 void GLES2DecoderImpl::DoDeleteSharedIdsCHROMIUM(
     GLuint namespace_id, GLsizei n, const GLuint* ids) {
   IdAllocatorInterface* id_allocator = group_->GetIdAllocator(namespace_id);
   for (GLsizei ii = 0; ii < n; ++ii) {
     id_allocator->FreeID(ids[ii]);
   }
 }
 
 error::Error GLES2DecoderImpl::HandleDeleteSharedIdsCHROMIUM(
-    uint32 immediate_data_size, const cmds::DeleteSharedIdsCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::DeleteSharedIdsCHROMIUM& c =
+      *static_cast<const gles2::cmds::DeleteSharedIdsCHROMIUM*>(cmd_data);
   GLuint namespace_id = static_cast<GLuint>(c.namespace_id);
   GLsizei n = static_cast<GLsizei>(c.n);
   uint32 data_size;
   if (!SafeMultiplyUint32(n, sizeof(GLuint), &data_size)) {
     return error::kOutOfBounds;
   }
   const GLuint* ids = GetSharedMemoryAs<const GLuint*>(
       c.ids_shm_id, c.ids_shm_offset, data_size);
   if (n < 0) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "DeleteSharedIdsCHROMIUM", "n < 0");
@@ skipping 15 matching lines @@
     }
   } else {
     for (GLsizei ii = 0; ii < n; ++ii) {
       ids[ii] = id_allocator->AllocateIDAtOrAbove(id_offset);
       id_offset = ids[ii] + 1;
     }
   }
 }
 
 error::Error GLES2DecoderImpl::HandleGenSharedIdsCHROMIUM(
-    uint32 immediate_data_size, const cmds::GenSharedIdsCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GenSharedIdsCHROMIUM& c =
+      *static_cast<const gles2::cmds::GenSharedIdsCHROMIUM*>(cmd_data);
   GLuint namespace_id = static_cast<GLuint>(c.namespace_id);
   GLuint id_offset = static_cast<GLuint>(c.id_offset);
   GLsizei n = static_cast<GLsizei>(c.n);
   uint32 data_size;
   if (!SafeMultiplyUint32(n, sizeof(GLuint), &data_size)) {
     return error::kOutOfBounds;
   }
   GLuint* ids = GetSharedMemoryAs<GLuint*>(
       c.ids_shm_id, c.ids_shm_offset, data_size);
   if (n < 0) {
@@ skipping 17 matching lines @@
       }
       LOCAL_SET_GL_ERROR(
           GL_INVALID_VALUE, "RegisterSharedIdsCHROMIUM",
           "attempt to register id that already exists");
       return;
     }
   }
 }
 
 error::Error GLES2DecoderImpl::HandleRegisterSharedIdsCHROMIUM(
-    uint32 immediate_data_size, const cmds::RegisterSharedIdsCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::RegisterSharedIdsCHROMIUM& c =
+      *static_cast<const gles2::cmds::RegisterSharedIdsCHROMIUM*>(cmd_data);
   GLuint namespace_id = static_cast<GLuint>(c.namespace_id);
   GLsizei n = static_cast<GLsizei>(c.n);
   uint32 data_size;
   if (!SafeMultiplyUint32(n, sizeof(GLuint), &data_size)) {
     return error::kOutOfBounds;
   }
   GLuint* ids = GetSharedMemoryAs<GLuint*>(
       c.ids_shm_id, c.ids_shm_offset, data_size);
   if (n < 0) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "RegisterSharedIdsCHROMIUM", "n < 0");
@@ skipping 1553 matching lines @@
       // We don't have to restore attrib 0 generic data at the end of this
       // function even if it is simulated. This is because we will simulate
       // it in each draw call, and attrib 0 generic data queries use cached
       // values instead of passing down to the underlying driver.
       RestoreStateForAttrib(0, false);
     }
   }
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleDrawArrays(
-    uint32 immediate_data_size, const cmds::DrawArrays& c) {
+error::Error GLES2DecoderImpl::HandleDrawArrays(uint32 immediate_data_size,
+                                                const void* cmd_data) {
+  const cmds::DrawArrays& c = *static_cast<const cmds::DrawArrays*>(cmd_data);
   return DoDrawArrays("glDrawArrays",
                       false,
                       static_cast<GLenum>(c.mode),
                       static_cast<GLint>(c.first),
                       static_cast<GLsizei>(c.count),
                       1);
 }
 
 error::Error GLES2DecoderImpl::HandleDrawArraysInstancedANGLE(
-    uint32 immediate_data_size, const cmds::DrawArraysInstancedANGLE& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::DrawArraysInstancedANGLE& c =
+      *static_cast<const gles2::cmds::DrawArraysInstancedANGLE*>(cmd_data);
   if (!features().angle_instanced_arrays) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION,
         "glDrawArraysInstancedANGLE", "function not available");
     return error::kNoError;
   }
   return DoDrawArrays("glDrawArraysIntancedANGLE",
                       true,
                       static_cast<GLenum>(c.mode),
                       static_cast<GLint>(c.first),
@@ skipping 107 matching lines @@
       // We don't have to restore attrib 0 generic data at the end of this
       // function even if it is simulated. This is because we will simulate
       // it in each draw call, and attrib 0 generic data queries use cached
       // values instead of passing down to the underlying driver.
       RestoreStateForAttrib(0, false);
     }
   }
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleDrawElements(
-    uint32 immediate_data_size, const cmds::DrawElements& c) {
+error::Error GLES2DecoderImpl::HandleDrawElements(uint32 immediate_data_size,
+                                                  const void* cmd_data) {
+  const gles2::cmds::DrawElements& c =
+      *static_cast<const gles2::cmds::DrawElements*>(cmd_data);
   return DoDrawElements("glDrawElements",
                         false,
                         static_cast<GLenum>(c.mode),
                         static_cast<GLsizei>(c.count),
                         static_cast<GLenum>(c.type),
                         static_cast<int32>(c.index_offset),
                         1);
 }
 
 error::Error GLES2DecoderImpl::HandleDrawElementsInstancedANGLE(
-    uint32 immediate_data_size, const cmds::DrawElementsInstancedANGLE& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::DrawElementsInstancedANGLE& c =
+      *static_cast<const gles2::cmds::DrawElementsInstancedANGLE*>(cmd_data);
   if (!features().angle_instanced_arrays) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION,
         "glDrawElementsInstancedANGLE", "function not available");
     return error::kNoError;
   }
   return DoDrawElements("glDrawElementsInstancedANGLE",
                         true,
                         static_cast<GLenum>(c.mode),
                         static_cast<GLsizei>(c.count),
@@ skipping 33 matching lines @@
   if (!shader) {
     return error::kNoError;
   }
   // Note: We don't actually call glShaderSource here. We wait until
   // the call to glCompileShader.
   shader->UpdateSource(str.c_str());
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleShaderSourceBucket(
-  uint32 immediate_data_size, const cmds::ShaderSourceBucket& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::ShaderSourceBucket& c =
+      *static_cast<const gles2::cmds::ShaderSourceBucket*>(cmd_data);
   Bucket* bucket = GetBucket(c.data_bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   return ShaderSourceHelper(
       c.shader, bucket->GetDataAs<const char*>(0, bucket->size() - 1),
       bucket->size() - 1);
 }
 
 void GLES2DecoderImpl::DoCompileShader(GLuint client_id) {
@@ skipping 34 matching lines @@
     case GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE:
       *params = shader->translated_source() ?
           shader->translated_source()->size() + 1 : 0;
       return;
     default:
       break;
   }
   glGetShaderiv(shader->service_id(), pname, params);
 }
 
-error::Error GLES2DecoderImpl::HandleGetShaderSource(
-    uint32 immediate_data_size, const cmds::GetShaderSource& c) {
+error::Error GLES2DecoderImpl::HandleGetShaderSource(uint32 immediate_data_size,
+                                                     const void* cmd_data) {
+  const gles2::cmds::GetShaderSource& c =
+      *static_cast<const gles2::cmds::GetShaderSource*>(cmd_data);
   GLuint shader_id = c.shader;
   uint32 bucket_id = static_cast<uint32>(c.bucket_id);
   Bucket* bucket = CreateBucket(bucket_id);
   Shader* shader = GetShaderInfoNotProgram(shader_id, "glGetShaderSource");
   if (!shader || !shader->source()) {
     bucket->SetSize(0);
     return error::kNoError;
   }
   bucket->SetFromString(shader->source()->c_str());
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetTranslatedShaderSourceANGLE(
     uint32 immediate_data_size,
-    const cmds::GetTranslatedShaderSourceANGLE& c) {
+    const void* cmd_data) {
+  const gles2::cmds::GetTranslatedShaderSourceANGLE& c =
+      *static_cast<const gles2::cmds::GetTranslatedShaderSourceANGLE*>(
+          cmd_data);
   GLuint shader_id = c.shader;
   uint32 bucket_id = static_cast<uint32>(c.bucket_id);
   Bucket* bucket = CreateBucket(bucket_id);
   Shader* shader = GetShaderInfoNotProgram(
       shader_id, "glGetTranslatedShaderSourceANGLE");
   if (!shader) {
     bucket->SetSize(0);
     return error::kNoError;
   }
 
   bucket->SetFromString(shader->translated_source() ?
       shader->translated_source()->c_str() : NULL);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetProgramInfoLog(
-    uint32 immediate_data_size, const cmds::GetProgramInfoLog& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetProgramInfoLog& c =
+      *static_cast<const gles2::cmds::GetProgramInfoLog*>(cmd_data);
   GLuint program_id = c.program;
   uint32 bucket_id = static_cast<uint32>(c.bucket_id);
   Bucket* bucket = CreateBucket(bucket_id);
   Program* program = GetProgramInfoNotShader(
       program_id, "glGetProgramInfoLog");
   if (!program || !program->log_info()) {
     bucket->SetFromString("");
     return error::kNoError;
   }
   bucket->SetFromString(program->log_info()->c_str());
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetShaderInfoLog(
-    uint32 immediate_data_size, const cmds::GetShaderInfoLog& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetShaderInfoLog& c =
+      *static_cast<const gles2::cmds::GetShaderInfoLog*>(cmd_data);
   GLuint shader_id = c.shader;
   uint32 bucket_id = static_cast<uint32>(c.bucket_id);
   Bucket* bucket = CreateBucket(bucket_id);
   Shader* shader = GetShaderInfoNotProgram(shader_id, "glGetShaderInfoLog");
   if (!shader || !shader->log_info()) {
     bucket->SetFromString("");
     return error::kNoError;
   }
   bucket->SetFromString(shader->log_info()->c_str());
   return error::kNoError;
@@ skipping 272 matching lines @@
   }
 }
 
 void GLES2DecoderImpl::DoVertexAttrib4fv(GLuint index, const GLfloat* v) {
   if (SetVertexAttribValue("glVertexAttrib4fv", index, v)) {
     glVertexAttrib4fv(index, v);
   }
 }
 
 error::Error GLES2DecoderImpl::HandleVertexAttribPointer(
-    uint32 immediate_data_size, const cmds::VertexAttribPointer& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::VertexAttribPointer& c =
+      *static_cast<const gles2::cmds::VertexAttribPointer*>(cmd_data);
 
   if (!state_.bound_array_buffer.get() ||
       state_.bound_array_buffer->IsDeleted()) {
     if (state_.vertex_attrib_manager.get() ==
         state_.default_vertex_attrib_manager.get()) {
       LOCAL_SET_GL_ERROR(
           GL_INVALID_VALUE, "glVertexAttribPointer", "no array buffer bound");
       return error::kNoError;
     } else if (c.offset != 0) {
       LOCAL_SET_GL_ERROR(
@@ skipping 73 matching lines @@
 void GLES2DecoderImpl::DoViewport(GLint x, GLint y, GLsizei width,
                                   GLsizei height) {
   state_.viewport_x = x;
   state_.viewport_y = y;
   state_.viewport_width = std::min(width, viewport_max_width_);
   state_.viewport_height = std::min(height, viewport_max_height_);
   glViewport(x, y, width, height);
 }
 
 error::Error GLES2DecoderImpl::HandleVertexAttribDivisorANGLE(
-    uint32 immediate_data_size, const cmds::VertexAttribDivisorANGLE& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::VertexAttribDivisorANGLE& c =
+      *static_cast<const gles2::cmds::VertexAttribDivisorANGLE*>(cmd_data);
   if (!features().angle_instanced_arrays) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION,
         "glVertexAttribDivisorANGLE", "function not available");
     return error::kNoError;
   }
   GLuint index = c.index;
   GLuint divisor = c.divisor;
   if (index >= group_->max_vertex_attribs()) {
     LOCAL_SET_GL_ERROR(
@@ skipping 130 matching lines @@
         case GL_HALF_FLOAT:
           WriteAlphaData<uint16>(
               pixels, height, channel_count, alpha_channel, unpadded_row_size,
               padded_row_size, 0x3C00);
           break;
       }
     }
   }
 }
 
-
-error::Error GLES2DecoderImpl::HandleReadPixels(
-    uint32 immediate_data_size, const cmds::ReadPixels& c) {
+error::Error GLES2DecoderImpl::HandleReadPixels(uint32 immediate_data_size,
+                                                const void* cmd_data) {
+  const gles2::cmds::ReadPixels& c =
+      *static_cast<const gles2::cmds::ReadPixels*>(cmd_data);
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandleReadPixels");
   error::Error fbo_error = WillAccessBoundFramebufferForRead();
   if (fbo_error != error::kNoError)
     return fbo_error;
   GLint x = c.x;
   GLint y = c.y;
   GLsizei width = c.width;
   GLsizei height = c.height;
   GLenum format = c.format;
   GLenum type = c.type;
@@ skipping 145 matching lines @@
   if (error == GL_NO_ERROR) {
     if (result != NULL) {
       *result = true;
     }
     FinishReadPixels(c, 0);
   }
 
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandlePixelStorei(
-    uint32 immediate_data_size, const cmds::PixelStorei& c) {
+error::Error GLES2DecoderImpl::HandlePixelStorei(uint32 immediate_data_size,
+                                                 const void* cmd_data) {
+  const gles2::cmds::PixelStorei& c =
+      *static_cast<const gles2::cmds::PixelStorei*>(cmd_data);
   GLenum pname = c.pname;
   GLenum param = c.param;
   if (!validators_->pixel_store.IsValid(pname)) {
     LOCAL_SET_GL_ERROR_INVALID_ENUM("glPixelStorei", pname, "pname");
     return error::kNoError;
   }
   switch (pname) {
     case GL_PACK_ALIGNMENT:
     case GL_UNPACK_ALIGNMENT:
         if (!validators_->pixel_store_alignment.IsValid(param)) {
@@ skipping 27 matching lines @@
         break;
     default:
         // Validation should have prevented us from getting here.
         NOTREACHED();
         break;
   }
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandlePostSubBufferCHROMIUM(
-    uint32 immediate_data_size, const cmds::PostSubBufferCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::PostSubBufferCHROMIUM& c =
+      *static_cast<const gles2::cmds::PostSubBufferCHROMIUM*>(cmd_data);
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandlePostSubBufferCHROMIUM");
   {
     TRACE_EVENT_SYNTHETIC_DELAY("gpu.PresentingFrame");
   }
   if (!supports_post_sub_buffer_) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION,
         "glPostSubBufferCHROMIUM", "command not supported by surface");
     return error::kNoError;
   }
   bool is_tracing;
   TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("gpu.debug"),
                                      &is_tracing);
   if (is_tracing) {
     bool is_offscreen = !!offscreen_target_frame_buffer_.get();
     ScopedFrameBufferBinder binder(this, GetBackbufferServiceId());
     gpu_state_tracer_->TakeSnapshotWithCurrentFramebuffer(
         is_offscreen ? offscreen_size_ : surface_->GetSize());
   }
   if (surface_->PostSubBuffer(c.x, c.y, c.width, c.height)) {
     return error::kNoError;
   } else {
     LOG(ERROR) << "Context lost because PostSubBuffer failed.";
     return error::kLostContext;
   }
 }
 
 error::Error GLES2DecoderImpl::HandleScheduleOverlayPlaneCHROMIUM(
     uint32 immediate_data_size,
-    const cmds::ScheduleOverlayPlaneCHROMIUM& c) {
+    const void* cmd_data) {
+  const gles2::cmds::ScheduleOverlayPlaneCHROMIUM& c =
+      *static_cast<const gles2::cmds::ScheduleOverlayPlaneCHROMIUM*>(cmd_data);
   TextureRef* ref = texture_manager()->GetTexture(c.overlay_texture_id);
   if (!ref) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE,
                        "glScheduleOverlayPlaneCHROMIUM",
                        "unknown texture");
     return error::kNoError;
   }
   gfx::GLImage* image =
       ref->texture()->GetLevelImage(ref->texture()->target(), 0);
   if (!image) {
@@ skipping 48 matching lines @@
   // Require the client to init this incase the context is lost and we are no
   // longer executing commands.
   if (*location != -1) {
     return error::kGenericError;
   }
   *location = program->GetAttribLocation(name_str);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetAttribLocation(
-    uint32 immediate_data_size, const cmds::GetAttribLocation& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetAttribLocation& c =
+      *static_cast<const gles2::cmds::GetAttribLocation*>(cmd_data);
   Bucket* bucket = GetBucket(c.name_bucket_id);
   if (!bucket) {
     return error::kInvalidArguments;
   }
   std::string name_str;
   if (!bucket->GetAsString(&name_str)) {
     return error::kInvalidArguments;
   }
   return GetAttribLocationHelper(
     c.program, c.location_shm_id, c.location_shm_offset, name_str);
@@ skipping 25 matching lines @@
   // Require the client to init this incase the context is lost an we are no
   // longer executing commands.
   if (*location != -1) {
     return error::kGenericError;
   }
   *location = program->GetUniformFakeLocation(name_str);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetUniformLocation(
-    uint32 immediate_data_size, const cmds::GetUniformLocation& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetUniformLocation& c =
+      *static_cast<const gles2::cmds::GetUniformLocation*>(cmd_data);
   Bucket* bucket = GetBucket(c.name_bucket_id);
   if (!bucket) {
     return error::kInvalidArguments;
   }
   std::string name_str;
   if (!bucket->GetAsString(&name_str)) {
     return error::kInvalidArguments;
   }
   return GetUniformLocationHelper(
     c.program, c.location_shm_id, c.location_shm_offset, name_str);
 }
 
-error::Error GLES2DecoderImpl::HandleGetString(
-    uint32 immediate_data_size, const cmds::GetString& c) {
+error::Error GLES2DecoderImpl::HandleGetString(uint32 immediate_data_size,
+                                               const void* cmd_data) {
+  const gles2::cmds::GetString& c =
+      *static_cast<const gles2::cmds::GetString*>(cmd_data);
   GLenum name = static_cast<GLenum>(c.name);
   if (!validators_->string_type.IsValid(name)) {
     LOCAL_SET_GL_ERROR_INVALID_ENUM("glGetString", name, "name");
     return error::kNoError;
   }
   const char* str = reinterpret_cast<const char*>(glGetString(name));
   std::string extensions;
   switch (name) {
     case GL_VERSION:
       str = "OpenGL ES 2.0 Chromium";
@@ skipping 52 matching lines @@
       }
       break;
     default:
       break;
   }
   Bucket* bucket = CreateBucket(c.bucket_id);
   bucket->SetFromString(str);
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleBufferData(
-    uint32 immediate_data_size, const cmds::BufferData& c) {
+error::Error GLES2DecoderImpl::HandleBufferData(uint32 immediate_data_size,
+                                                const void* cmd_data) {
+  const gles2::cmds::BufferData& c =
+      *static_cast<const gles2::cmds::BufferData*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   GLsizeiptr size = static_cast<GLsizeiptr>(c.size);
   uint32 data_shm_id = static_cast<uint32>(c.data_shm_id);
   uint32 data_shm_offset = static_cast<uint32>(c.data_shm_offset);
   GLenum usage = static_cast<GLenum>(c.usage);
   const void* data = NULL;
   if (data_shm_id != 0 || data_shm_offset != 0) {
     data = GetSharedMemoryAs<const void*>(data_shm_id, data_shm_offset, size);
     if (!data) {
       return error::kOutOfBounds;
@@ skipping 383 matching lines @@
   GLenum error = LOCAL_PEEK_GL_ERROR("glCompressedTexImage2D");
   if (error == GL_NO_ERROR) {
     texture_manager()->SetLevelInfo(
         texture_ref, target, level, internal_format,
         width, height, 1, border, 0, 0, true);
   }
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleCompressedTexImage2D(
-    uint32 immediate_data_size, const cmds::CompressedTexImage2D& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::CompressedTexImage2D& c =
+      *static_cast<const gles2::cmds::CompressedTexImage2D*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLenum internal_format = static_cast<GLenum>(c.internalformat);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLint border = static_cast<GLint>(c.border);
   GLsizei image_size = static_cast<GLsizei>(c.imageSize);
   uint32 data_shm_id = static_cast<uint32>(c.data_shm_id);
   uint32 data_shm_offset = static_cast<uint32>(c.data_shm_offset);
   const void* data = NULL;
   if (data_shm_id != 0 || data_shm_offset != 0) {
     data = GetSharedMemoryAs<const void*>(
         data_shm_id, data_shm_offset, image_size);
     if (!data) {
       return error::kOutOfBounds;
     }
   }
   return DoCompressedTexImage2D(
       target, level, internal_format, width, height, border, image_size, data);
 }
 
 error::Error GLES2DecoderImpl::HandleCompressedTexImage2DBucket(
-    uint32 immediate_data_size, const cmds::CompressedTexImage2DBucket& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::CompressedTexImage2DBucket& c =
+      *static_cast<const gles2::cmds::CompressedTexImage2DBucket*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLenum internal_format = static_cast<GLenum>(c.internalformat);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLint border = static_cast<GLint>(c.border);
   Bucket* bucket = GetBucket(c.bucket_id);
   if (!bucket) {
     return error::kInvalidArguments;
   }
   uint32 data_size = bucket->size();
   GLsizei imageSize = data_size;
   const void* data = bucket->GetData(0, data_size);
   if (!data) {
     return error::kInvalidArguments;
   }
   return DoCompressedTexImage2D(
       target, level, internal_format, width, height, border,
       imageSize, data);
 }
 
 error::Error GLES2DecoderImpl::HandleCompressedTexSubImage2DBucket(
     uint32 immediate_data_size,
-    const cmds::CompressedTexSubImage2DBucket& c) {
+    const void* cmd_data) {
+  const gles2::cmds::CompressedTexSubImage2DBucket& c =
+      *static_cast<const gles2::cmds::CompressedTexSubImage2DBucket*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLint xoffset = static_cast<GLint>(c.xoffset);
   GLint yoffset = static_cast<GLint>(c.yoffset);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLenum format = static_cast<GLenum>(c.format);
   Bucket* bucket = GetBucket(c.bucket_id);
   if (!bucket) {
     return error::kInvalidArguments;
@@ skipping 27 matching lines @@
   if (imageSize < 0) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_VALUE, "glCompressedTexSubImage2D", "imageSize < 0");
     return error::kNoError;
   }
   DoCompressedTexSubImage2D(
       target, level, xoffset, yoffset, width, height, format, imageSize, data);
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleTexImage2D(
-    uint32 immediate_data_size, const cmds::TexImage2D& c) {
+error::Error GLES2DecoderImpl::HandleTexImage2D(uint32 immediate_data_size,
+                                                const void* cmd_data) {
+  const gles2::cmds::TexImage2D& c =
+      *static_cast<const gles2::cmds::TexImage2D*>(cmd_data);
   TRACE_EVENT2("gpu", "GLES2DecoderImpl::HandleTexImage2D",
       "width", c.width, "height", c.height);
   // Set as failed for now, but if it successed, this will be set to not failed.
   texture_state_.tex_image_2d_failed = true;
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   // TODO(kloveless): Change TexImage2D command to use unsigned integer
   // for internalformat.
   GLenum internal_format = static_cast<GLenum>(c.internalformat);
   GLsizei width = static_cast<GLsizei>(c.width);
@@ skipping 462 matching lines @@
         target, level, internal_format, width, height, 0, format, type, data);
   } else {
     ScopedTextureUploadTimer timer(&texture_state_);
     glTexSubImage2D(
         target, level, xoffset, yoffset, width, height, format, type, data);
   }
   texture_manager()->SetLevelCleared(texture_ref, target, level, true);
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleTexSubImage2D(
-    uint32 immediate_data_size, const cmds::TexSubImage2D& c) {
+error::Error GLES2DecoderImpl::HandleTexSubImage2D(uint32 immediate_data_size,
+                                                   const void* cmd_data) {
+  const gles2::cmds::TexSubImage2D& c =
+      *static_cast<const gles2::cmds::TexSubImage2D*>(cmd_data);
   TRACE_EVENT2("gpu", "GLES2DecoderImpl::HandleTexSubImage2D",
       "width", c.width, "height", c.height);
   GLboolean internal = static_cast<GLboolean>(c.internal);
   if (internal == GL_TRUE && texture_state_.tex_image_2d_failed)
     return error::kNoError;
 
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLint xoffset = static_cast<GLint>(c.xoffset);
   GLint yoffset = static_cast<GLint>(c.yoffset);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLenum format = static_cast<GLenum>(c.format);
   GLenum type = static_cast<GLenum>(c.type);
   uint32 data_size;
   if (!GLES2Util::ComputeImageDataSizes(
       width, height, format, type, state_.unpack_alignment, &data_size,
       NULL, NULL)) {
     return error::kOutOfBounds;
   }
   const void* pixels = GetSharedMemoryAs<const void*>(
       c.pixels_shm_id, c.pixels_shm_offset, data_size);
   return DoTexSubImage2D(
       target, level, xoffset, yoffset, width, height, format, type, pixels);
 }
 
 error::Error GLES2DecoderImpl::HandleGetVertexAttribPointerv(
-    uint32 immediate_data_size, const cmds::GetVertexAttribPointerv& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetVertexAttribPointerv& c =
+      *static_cast<const gles2::cmds::GetVertexAttribPointerv*>(cmd_data);
   GLuint index = static_cast<GLuint>(c.index);
   GLenum pname = static_cast<GLenum>(c.pname);
   typedef cmds::GetVertexAttribPointerv::Result Result;
   Result* result = GetSharedMemoryAs<Result*>(
         c.pointer_shm_id, c.pointer_shm_offset, Result::ComputeSize(1));
   if (!result) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
   if (result->size != 0) {
@@ skipping 68 matching lines @@
       shm_id, shm_offset, SizedResult<GLint>::ComputeSizeFromBytes(size));
   if (!result) {
     *error = error::kOutOfBounds;
     return false;
   }
   result->size = size;
   *result_type = type;
   return true;
 }
 
-error::Error GLES2DecoderImpl::HandleGetUniformiv(
-    uint32 immediate_data_size, const cmds::GetUniformiv& c) {
+error::Error GLES2DecoderImpl::HandleGetUniformiv(uint32 immediate_data_size,
+                                                  const void* cmd_data) {
+  const gles2::cmds::GetUniformiv& c =
+      *static_cast<const gles2::cmds::GetUniformiv*>(cmd_data);
   GLuint program = c.program;
   GLint fake_location = c.location;
   GLuint service_id;
   GLenum result_type;
   GLint real_location = -1;
   Error error;
   void* result;
   if (GetUniformSetup(
       program, fake_location, c.params_shm_id, c.params_shm_offset,
       &error, &real_location, &service_id, &result, &result_type)) {
     glGetUniformiv(
         service_id, real_location,
         static_cast<cmds::GetUniformiv::Result*>(result)->GetData());
   }
   return error;
 }
 
-error::Error GLES2DecoderImpl::HandleGetUniformfv(
-    uint32 immediate_data_size, const cmds::GetUniformfv& c) {
+error::Error GLES2DecoderImpl::HandleGetUniformfv(uint32 immediate_data_size,
+                                                  const void* cmd_data) {
+  const gles2::cmds::GetUniformfv& c =
+      *static_cast<const gles2::cmds::GetUniformfv*>(cmd_data);
   GLuint program = c.program;
   GLint fake_location = c.location;
   GLuint service_id;
   GLint real_location = -1;
   Error error;
   typedef cmds::GetUniformfv::Result Result;
   Result* result;
   GLenum result_type;
   if (GetUniformSetup(
       program, fake_location, c.params_shm_id, c.params_shm_offset,
       &error, &real_location, &service_id,
       reinterpret_cast<void**>(&result), &result_type)) {
     if (result_type == GL_BOOL || result_type == GL_BOOL_VEC2 ||
         result_type == GL_BOOL_VEC3 || result_type == GL_BOOL_VEC4) {
       GLsizei num_values = result->GetNumResults();
       scoped_ptr<GLint[]> temp(new GLint[num_values]);
       glGetUniformiv(service_id, real_location, temp.get());
       GLfloat* dst = result->GetData();
       for (GLsizei ii = 0; ii < num_values; ++ii) {
         dst[ii] = (temp[ii] != 0);
       }
     } else {
       glGetUniformfv(service_id, real_location, result->GetData());
     }
   }
   return error;
 }
 
 error::Error GLES2DecoderImpl::HandleGetShaderPrecisionFormat(
-    uint32 immediate_data_size, const cmds::GetShaderPrecisionFormat& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetShaderPrecisionFormat& c =
+      *static_cast<const gles2::cmds::GetShaderPrecisionFormat*>(cmd_data);
   GLenum shader_type = static_cast<GLenum>(c.shadertype);
   GLenum precision_type = static_cast<GLenum>(c.precisiontype);
   typedef cmds::GetShaderPrecisionFormat::Result Result;
   Result* result = GetSharedMemoryAs<Result*>(
       c.result_shm_id, c.result_shm_offset, sizeof(*result));
   if (!result) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
   if (result->success != 0) {
@@ skipping 17 matching lines @@
   GetShaderPrecisionFormatImpl(shader_type, precision_type, range, &precision);
 
   result->min_range = range[0];
   result->max_range = range[1];
   result->precision = precision;
 
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetAttachedShaders(
-    uint32 immediate_data_size, const cmds::GetAttachedShaders& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetAttachedShaders& c =
+      *static_cast<const gles2::cmds::GetAttachedShaders*>(cmd_data);
   uint32 result_size = c.result_size;
   GLuint program_id = static_cast<GLuint>(c.program);
   Program* program = GetProgramInfoNotShader(
       program_id, "glGetAttachedShaders");
   if (!program) {
     return error::kNoError;
   }
   typedef cmds::GetAttachedShaders::Result Result;
   uint32 max_count = Result::ComputeMaxResults(result_size);
   Result* result = GetSharedMemoryAs<Result*>(
@@ skipping 13 matching lines @@
                                        &result->GetData()[ii])) {
       NOTREACHED();
       return error::kGenericError;
     }
   }
   result->SetNumResults(count);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetActiveUniform(
-    uint32 immediate_data_size, const cmds::GetActiveUniform& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetActiveUniform& c =
+      *static_cast<const gles2::cmds::GetActiveUniform*>(cmd_data);
   GLuint program_id = c.program;
   GLuint index = c.index;
   uint32 name_bucket_id = c.name_bucket_id;
   typedef cmds::GetActiveUniform::Result Result;
   Result* result = GetSharedMemoryAs<Result*>(
       c.result_shm_id, c.result_shm_offset, sizeof(*result));
   if (!result) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
@@ skipping 13 matching lines @@
     return error::kNoError;
   }
   result->success = 1;  // true.
   result->size = uniform_info->size;
   result->type = uniform_info->type;
   Bucket* bucket = CreateBucket(name_bucket_id);
   bucket->SetFromString(uniform_info->name.c_str());
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleGetActiveAttrib(
-    uint32 immediate_data_size, const cmds::GetActiveAttrib& c) {
+error::Error GLES2DecoderImpl::HandleGetActiveAttrib(uint32 immediate_data_size,
+                                                     const void* cmd_data) {
+  const gles2::cmds::GetActiveAttrib& c =
+      *static_cast<const gles2::cmds::GetActiveAttrib*>(cmd_data);
   GLuint program_id = c.program;
   GLuint index = c.index;
   uint32 name_bucket_id = c.name_bucket_id;
   typedef cmds::GetActiveAttrib::Result Result;
   Result* result = GetSharedMemoryAs<Result*>(
       c.result_shm_id, c.result_shm_offset, sizeof(*result));
   if (!result) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
@@ skipping 13 matching lines @@
     return error::kNoError;
   }
   result->success = 1;  // true.
   result->size = attrib_info->size;
   result->type = attrib_info->type;
   Bucket* bucket = CreateBucket(name_bucket_id);
   bucket->SetFromString(attrib_info->name.c_str());
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleShaderBinary(
-    uint32 immediate_data_size, const cmds::ShaderBinary& c) {
+error::Error GLES2DecoderImpl::HandleShaderBinary(uint32 immediate_data_size,
+                                                  const void* cmd_data) {
 #if 1  // No binary shader support.
   LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glShaderBinary", "not supported");
   return error::kNoError;
 #else
   GLsizei n = static_cast<GLsizei>(c.n);
   if (n < 0) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "glShaderBinary", "n < 0");
     return error::kNoError;
   }
   GLsizei length = static_cast<GLsizei>(c.length);
@@ skipping 135 matching lines @@
     }
   } else {
     if (!surface_->SwapBuffers()) {
       LOG(ERROR) << "Context lost because SwapBuffers failed.";
       LoseContext(GL_UNKNOWN_CONTEXT_RESET_ARB);
     }
   }
 }
 
 error::Error GLES2DecoderImpl::HandleEnableFeatureCHROMIUM(
-    uint32 immediate_data_size, const cmds::EnableFeatureCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::EnableFeatureCHROMIUM& c =
+      *static_cast<const gles2::cmds::EnableFeatureCHROMIUM*>(cmd_data);
   Bucket* bucket = GetBucket(c.bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   typedef cmds::EnableFeatureCHROMIUM::Result Result;
   Result* result = GetSharedMemoryAs<Result*>(
       c.result_shm_id, c.result_shm_offset, sizeof(*result));
   if (!result) {
     return error::kOutOfBounds;
   }
@@ skipping 27 matching lines @@
   } else {
     return error::kNoError;
   }
 
   *result = 1;  // true.
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetRequestableExtensionsCHROMIUM(
     uint32 immediate_data_size,
-    const cmds::GetRequestableExtensionsCHROMIUM& c) {
+    const void* cmd_data) {
+  const gles2::cmds::GetRequestableExtensionsCHROMIUM& c =
+      *static_cast<const gles2::cmds::GetRequestableExtensionsCHROMIUM*>(
+          cmd_data);
   Bucket* bucket = CreateBucket(c.bucket_id);
   scoped_refptr<FeatureInfo> info(new FeatureInfo());
   info->Initialize(disallowed_features_);
   bucket->SetFromString(info->extensions().c_str());
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleRequestExtensionCHROMIUM(
-    uint32 immediate_data_size, const cmds::RequestExtensionCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::RequestExtensionCHROMIUM& c =
+      *static_cast<const gles2::cmds::RequestExtensionCHROMIUM*>(cmd_data);
   Bucket* bucket = GetBucket(c.bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   std::string feature_str;
   if (!bucket->GetAsString(&feature_str)) {
     return error::kInvalidArguments;
   }
 
   bool desire_webgl_glsl_validation =
@@ skipping 24 matching lines @@
     shader_texture_lod_explicitly_enabled_ |= desire_shader_texture_lod;
     InitializeShaderTranslator();
   }
 
   UpdateCapabilities();
 
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetMultipleIntegervCHROMIUM(
-    uint32 immediate_data_size, const cmds::GetMultipleIntegervCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetMultipleIntegervCHROMIUM& c =
+      *static_cast<const gles2::cmds::GetMultipleIntegervCHROMIUM*>(cmd_data);
   GLuint count = c.count;
   uint32 pnames_size;
   if (!SafeMultiplyUint32(count, sizeof(GLenum), &pnames_size)) {
     return error::kOutOfBounds;
   }
   const GLenum* pnames = GetSharedMemoryAs<const GLenum*>(
       c.pnames_shm_id, c.pnames_shm_offset, pnames_size);
   if (pnames == NULL) {
     return error::kOutOfBounds;
   }
@@ skipping 58 matching lines @@
 
   // Just to verify. Should this be a DCHECK?
   if (static_cast<uint32>(results - start) != num_results) {
     return error::kOutOfBounds;
   }
 
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleGetProgramInfoCHROMIUM(
-    uint32 immediate_data_size, const cmds::GetProgramInfoCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::GetProgramInfoCHROMIUM& c =
+      *static_cast<const gles2::cmds::GetProgramInfoCHROMIUM*>(cmd_data);
   GLuint program_id = static_cast<GLuint>(c.program);
   uint32 bucket_id = c.bucket_id;
   Bucket* bucket = CreateBucket(bucket_id);
   bucket->SetSize(sizeof(ProgramInfoHeader));  // in case we fail.
   Program* program = NULL;
   program = GetProgram(program_id);
   if (!program || !program->IsValid()) {
     return error::kNoError;
   }
   program->GetProgramInfo(program_manager(), bucket);
@@ skipping 48 matching lines @@
   if (reset_status_ != GL_NO_ERROR) {
     return;
   }
 
   // Marks this context as lost.
   reset_status_ = reset_status;
   current_decoder_error_ = error::kLostContext;
 }
 
 error::Error GLES2DecoderImpl::HandleInsertSyncPointCHROMIUM(
-    uint32 immediate_data_size, const cmds::InsertSyncPointCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
   return error::kUnknownCommand;
 }
 
 error::Error GLES2DecoderImpl::HandleWaitSyncPointCHROMIUM(
-    uint32 immediate_data_size, const cmds::WaitSyncPointCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::WaitSyncPointCHROMIUM& c =
+      *static_cast<const gles2::cmds::WaitSyncPointCHROMIUM*>(cmd_data);
   group_->mailbox_manager()->PullTextureUpdates();
   if (wait_sync_point_callback_.is_null())
     return error::kNoError;
 
   return wait_sync_point_callback_.Run(c.sync_point) ?
       error::kNoError : error::kDeferCommandUntilLater;
 }
 
 error::Error GLES2DecoderImpl::HandleDiscardBackbufferCHROMIUM(
-    uint32 immediate_data_size, const cmds::DiscardBackbufferCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
   if (surface_->DeferDraws())
     return error::kDeferCommandUntilLater;
   if (!surface_->SetBackbufferAllocation(false))
     return error::kLostContext;
   backbuffer_needs_clear_bits_ |= GL_COLOR_BUFFER_BIT;
   backbuffer_needs_clear_bits_ |= GL_DEPTH_BUFFER_BIT;
   backbuffer_needs_clear_bits_ |= GL_STENCIL_BUFFER_BIT;
   return error::kNoError;
 }
 
@@ skipping 62 matching lines @@
 }
 
 void GLES2DecoderImpl::PerformIdleWork() {
   ProcessPendingReadPixels();
   if (!async_pixel_transfer_manager_->NeedsProcessMorePendingTransfers())
     return;
   async_pixel_transfer_manager_->ProcessMorePendingTransfers();
   ProcessFinishedAsyncTransfers();
 }
 
-error::Error GLES2DecoderImpl::HandleBeginQueryEXT(
-    uint32 immediate_data_size, const cmds::BeginQueryEXT& c) {
+error::Error GLES2DecoderImpl::HandleBeginQueryEXT(uint32 immediate_data_size,
+                                                   const void* cmd_data) {
+  const gles2::cmds::BeginQueryEXT& c =
+      *static_cast<const gles2::cmds::BeginQueryEXT*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   GLuint client_id = static_cast<GLuint>(c.id);
   int32 sync_shm_id = static_cast<int32>(c.sync_data_shm_id);
   uint32 sync_shm_offset = static_cast<uint32>(c.sync_data_shm_offset);
 
   switch (target) {
     case GL_COMMANDS_ISSUED_CHROMIUM:
     case GL_LATENCY_QUERY_CHROMIUM:
     case GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM:
     case GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM:
@@ skipping 51 matching lines @@
   }
 
   if (!query_manager_->BeginQuery(query)) {
     return error::kOutOfBounds;
   }
 
   state_.current_queries[target] = query;
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleEndQueryEXT(
-    uint32 immediate_data_size, const cmds::EndQueryEXT& c) {
+error::Error GLES2DecoderImpl::HandleEndQueryEXT(uint32 immediate_data_size,
+                                                 const void* cmd_data) {
+  const gles2::cmds::EndQueryEXT& c =
+      *static_cast<const gles2::cmds::EndQueryEXT*>(cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   uint32 submit_count = static_cast<GLuint>(c.submit_count);
   ContextState::QueryMap::iterator it = state_.current_queries.find(target);
 
   if (it == state_.current_queries.end()) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION, "glEndQueryEXT", "No active query");
     return error::kNoError;
   }
 
@@ skipping 539 matching lines @@
           texture_ref, target, ii, format,
           level_width, level_height, 1, 0, format, type, false);
       level_width = std::max(1, level_width >> 1);
       level_height = std::max(1, level_height >> 1);
     }
     texture->SetImmutable(true);
   }
 }
 
 error::Error GLES2DecoderImpl::HandleGenMailboxCHROMIUM(
-    uint32 immediate_data_size, const cmds::GenMailboxCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
   return error::kUnknownCommand;
 }
 
 void GLES2DecoderImpl::DoProduceTextureCHROMIUM(GLenum target,
                                                 const GLbyte* data) {
   TRACE_EVENT2("gpu", "GLES2DecoderImpl::DoProduceTextureCHROMIUM",
       "context", logger_.GetLogPrefix(),
       "mailbox[0]", static_cast<unsigned char>(data[0]));
 
   TextureRef* texture_ref = texture_manager()->GetTextureInfoForTarget(
@@ skipping 99 matching lines @@
       unit.bound_texture_rectangle_arb = texture_ref;
       break;
     default:
       NOTREACHED();  // Validation should prevent us getting here.
       break;
   }
 }
 
 error::Error GLES2DecoderImpl::HandleCreateAndConsumeTextureCHROMIUMImmediate(
     uint32_t immediate_data_size,
-    const gles2::cmds::CreateAndConsumeTextureCHROMIUMImmediate& c) {
+    const void* cmd_data) {
+  const gles2::cmds::CreateAndConsumeTextureCHROMIUMImmediate& c =
+      *static_cast<
+          const gles2::cmds::CreateAndConsumeTextureCHROMIUMImmediate*>(
+          cmd_data);
   GLenum target = static_cast<GLenum>(c.target);
   uint32_t data_size;
   if (!ComputeDataSize(1, sizeof(GLbyte), 64, &data_size)) {
     return error::kOutOfBounds;
   }
   if (data_size > immediate_data_size) {
     return error::kOutOfBounds;
   }
   const GLbyte* mailbox =
       GetImmediateDataAs<const GLbyte*>(c, data_size, immediate_data_size);
@@ skipping 152 matching lines @@
         "GLES2DecoderImpl::DoReleaseTexImage2DCHROMIUM", GetErrorState());
     gl_image->ReleaseTexImage(target);
   }
 
   texture_manager()->SetLevelInfo(
       texture_ref, target, 0, GL_RGBA, 0, 0, 1, 0,
       GL_RGBA, GL_UNSIGNED_BYTE, false);
 }
 
 error::Error GLES2DecoderImpl::HandleTraceBeginCHROMIUM(
-    uint32 immediate_data_size, const cmds::TraceBeginCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::TraceBeginCHROMIUM& c =
+      *static_cast<const gles2::cmds::TraceBeginCHROMIUM*>(cmd_data);
   Bucket* bucket = GetBucket(c.bucket_id);
   if (!bucket || bucket->size() == 0) {
     return error::kInvalidArguments;
   }
   std::string command_name;
   if (!bucket->GetAsString(&command_name)) {
     return error::kInvalidArguments;
   }
   TRACE_EVENT_COPY_ASYNC_BEGIN0("gpu", command_name.c_str(), this);
   if (!gpu_tracer_->Begin(command_name, kTraceCHROMIUM)) {
@@ skipping 157 matching lines @@
       new AsyncUploadTokenCompletionObserver(async_upload_token));
 
   return base::Bind(
       &AsyncPixelTransferManager::AsyncNotifyCompletion,
       base::Unretained(GetAsyncPixelTransferManager()),
       mem_params,
       observer);
 }
 
 error::Error GLES2DecoderImpl::HandleAsyncTexImage2DCHROMIUM(
-    uint32 immediate_data_size, const cmds::AsyncTexImage2DCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::AsyncTexImage2DCHROMIUM& c =
+      *static_cast<const gles2::cmds::AsyncTexImage2DCHROMIUM*>(cmd_data);
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandleAsyncTexImage2DCHROMIUM");
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLenum internal_format = static_cast<GLenum>(c.internalformat);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLint border = static_cast<GLint>(c.border);
   GLenum format = static_cast<GLenum>(c.format);
   GLenum type = static_cast<GLenum>(c.type);
   uint32 pixels_shm_id = static_cast<uint32>(c.pixels_shm_id);
@@ skipping 83 matching lines @@
                  // The callback is only invoked if the transfer delegate still
                  // exists, which implies through manager->texture_ref->state
                  // ownership that both of these pointers are valid.
                  base::Unretained(texture_manager()),
                  base::Unretained(texture_ref),
                  tex_params));
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleAsyncTexSubImage2DCHROMIUM(
-    uint32 immediate_data_size, const cmds::AsyncTexSubImage2DCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::AsyncTexSubImage2DCHROMIUM& c =
+      *static_cast<const gles2::cmds::AsyncTexSubImage2DCHROMIUM*>(cmd_data);
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandleAsyncTexSubImage2DCHROMIUM");
   GLenum target = static_cast<GLenum>(c.target);
   GLint level = static_cast<GLint>(c.level);
   GLint xoffset = static_cast<GLint>(c.xoffset);
   GLint yoffset = static_cast<GLint>(c.yoffset);
   GLsizei width = static_cast<GLsizei>(c.width);
   GLsizei height = static_cast<GLsizei>(c.height);
   GLenum format = static_cast<GLenum>(c.format);
   GLenum type = static_cast<GLenum>(c.type);
   uint32 async_upload_token = static_cast<uint32>(c.async_upload_token);
@@ skipping 76 matching lines @@
     delegate = async_pixel_transfer_manager_->CreatePixelTransferDelegate(
         texture_ref, define_params);
     texture->SetImmutable(true);
   }
 
   delegate->AsyncTexSubImage2D(tex_params, mem_params);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleWaitAsyncTexImage2DCHROMIUM(
-    uint32 immediate_data_size, const cmds::WaitAsyncTexImage2DCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* cmd_data) {
+  const gles2::cmds::WaitAsyncTexImage2DCHROMIUM& c =
+      *static_cast<const gles2::cmds::WaitAsyncTexImage2DCHROMIUM*>(cmd_data);
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandleWaitAsyncTexImage2DCHROMIUM");
   GLenum target = static_cast<GLenum>(c.target);
 
   if (GL_TEXTURE_2D != target) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_ENUM, "glWaitAsyncTexImage2DCHROMIUM", "target");
     return error::kNoError;
   }
   TextureRef* texture_ref = texture_manager()->GetTextureInfoForTarget(
       &state_, target);
@@ skipping 10 matching lines @@
           GL_INVALID_OPERATION,
           "glWaitAsyncTexImage2DCHROMIUM", "No async transfer started");
     return error::kNoError;
   }
   delegate->WaitForTransferCompletion();
   ProcessFinishedAsyncTransfers();
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleWaitAllAsyncTexImage2DCHROMIUM(
-    uint32 immediate_data_size, const cmds::WaitAllAsyncTexImage2DCHROMIUM& c) {
+    uint32 immediate_data_size,
+    const void* data) {
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::HandleWaitAsyncTexImage2DCHROMIUM");
 
   GetAsyncPixelTransferManager()->WaitAllAsyncTexImage2D();
   ProcessFinishedAsyncTransfers();
   return error::kNoError;
 }
 
 void GLES2DecoderImpl::OnTextureRefDetachedFromFramebuffer(
     TextureRef* texture_ref) {
   Texture* texture = texture_ref->texture();
   DoDidUseTexImageIfNeeded(texture, texture->target());
 }
 
 void GLES2DecoderImpl::OnOutOfMemoryError() {
   if (lose_context_when_out_of_memory_) {
     group_->LoseContexts(GL_UNKNOWN_CONTEXT_RESET_ARB);
     LoseContext(GL_GUILTY_CONTEXT_RESET_ARB);
   }
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu