GPU client side changes for GpuMemoryBuffers

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.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 "webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 
 #include <algorithm>
 #include <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/synchronization/lock.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/gles2_lib.h"
+#include "gpu/command_buffer/client/gpu_memory_buffer_factory.h"
 #include "gpu/command_buffer/client/transfer_buffer.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/gl_context_virtual.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
+#include "gpu/command_buffer/service/image_manager.h"
 #include "gpu/command_buffer/service/transfer_buffer_manager.h"
 #include "ui/gl/gl_context.h"
+#include "ui/gl/gl_image.h"
 #include "ui/gl/gl_share_group.h"
 #include "ui/gl/gl_surface.h"
 #include "webkit/gpu/gl_bindings_skia_cmd_buffer.h"
 
 using gpu::Buffer;
 using gpu::CommandBuffer;
 using gpu::CommandBufferService;
 using gpu::gles2::GLES2CmdHelper;
 using gpu::gles2::GLES2Implementation;
 using gpu::GpuScheduler;
@@ skipping 88 matching lines @@
   Error GetError();
 
   // Return true if GPU process reported GLInProcessContext lost or there was a
   // problem communicating with the GPU process.
   bool IsCommandBufferContextLost();
 
   CommandBufferService* GetCommandBufferService();
 
   ::gpu::gles2::GLES2Decoder* GetDecoder();
 
+
  private:
   explicit GLInProcessContext(bool share_resources);
 
   bool Initialize(bool is_offscreen,
                   gfx::AcceleratedWidget window,
                   const gfx::Size& size,
                   const char* allowed_extensions,
                   const int32* attrib_list,
                   gfx::GpuPreference gpu_preference);
   void Destroy();
 
   void OnContextLost();
 
+  ::gpu::gles2::ImageManager* GetImageManager();
+
   base::Closure context_lost_callback_;
   scoped_ptr<TransferBufferManagerInterface> transfer_buffer_manager_;
   scoped_ptr<CommandBufferService> command_buffer_;
   scoped_ptr< ::gpu::GpuScheduler> gpu_scheduler_;
   scoped_ptr< ::gpu::gles2::GLES2Decoder> decoder_;
   scoped_refptr<gfx::GLContext> context_;
   scoped_refptr<gfx::GLSurface> surface_;
   scoped_ptr<GLES2CmdHelper> gles2_helper_;
   scoped_ptr<TransferBuffer> transfer_buffer_;
   scoped_ptr<GLES2Implementation> gles2_implementation_;
@@ skipping 209 matching lines @@
 
 // TODO(gman): Remove This
 void GLInProcessContext::DisableShaderTranslation() {
   NOTREACHED();
 }
 
 GLES2Implementation* GLInProcessContext::GetImplementation() {
   return gles2_implementation_.get();
 }
 
+::gpu::gles2::ImageManager* GLInProcessContext::GetImageManager() {
+  return decoder_->GetContextGroup()->image_manager();
+}
+
 GLInProcessContext::GLInProcessContext(bool share_resources)
     : last_error_(SUCCESS),
       share_resources_(share_resources),
       context_lost_(false) {
 }
 
 bool GLInProcessContext::Initialize(
     bool is_offscreen,
     gfx::AcceleratedWidget window,
     const gfx::Size& size,
@@ skipping 59 matching lines @@
     if (share_resources_ && !g_all_shared_contexts.Get().empty())
       context_group = *g_all_shared_contexts.Get().begin();
 
     // TODO(gman): This needs to be true if this is Pepper.
     bool bind_generates_resource = false;
     decoder_.reset(::gpu::gles2::GLES2Decoder::Create(context_group ?
         context_group->decoder_->GetContextGroup() :
             new ::gpu::gles2::ContextGroup(
                 NULL, NULL, NULL, bind_generates_resource)));
 
+    ::gpu::SetProcessDefaultImageManager(GetImageManager());
+
     gpu_scheduler_.reset(new GpuScheduler(command_buffer_.get(),
                                           decoder_.get(),
                                           decoder_.get()));
 
     decoder_->set_engine(gpu_scheduler_.get());
 
     if (is_offscreen)
       surface_ = gfx::GLSurface::CreateOffscreenGLSurface(false, size);
     else
       surface_ = gfx::GLSurface::CreateViewGLSurface(false, window);
@@ skipping 1160 matching lines @@
 WebGLId WebGraphicsContext3DInProcessCommandBufferImpl::createTexture() {
   ClearContext();
   GLuint o;
   gl_->GenTextures(1, &o);
   return o;
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::deleteBuffer(
     WebGLId buffer) {
   ClearContext();
+  // It is safe to call this method even though the buffer being deleted
+  // isn't a GPU memory buffer as it eventually translates to a
+  // hash_map::erase() which doesn't throw an exception if the key
+  // isn't in the hash_map
+  DeleteImageForGpuMemoryBuffer(buffer);
   gl_->DeleteBuffers(1, &buffer);
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::deleteFramebuffer(
     WebGLId framebuffer) {
   ClearContext();
   gl_->DeleteFramebuffers(1, &framebuffer);
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::deleteProgram(
@@ skipping 113 matching lines @@
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost() {
   // TODO(kbr): improve the precision here.
   context_lost_reason_ = GL_UNKNOWN_CONTEXT_RESET_ARB;
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }
 }
 
+void WebGraphicsContext3DInProcessCommandBufferImpl::imageBufferDataCHROMIUM(
+    WGC3Denum target, WGC3Dsizei width, WGC3Dsizei height) {
+  ClearContext();
+  gl_->ImageBufferDataCHROMIUM(target, width, height);
+}
+
 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
                  WebGLId, WGC3Dint, const WGC3Dchar*)
 
 DELEGATE_TO_GL(shallowFlushCHROMIUM, ShallowFlushCHROMIUM)
 
 DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
 DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 DELEGATE_TO_GL_2(consumeTextureCHROMIUM, ConsumeTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 
 DELEGATE_TO_GL_2(drawBuffersEXT, DrawBuffersEXT,
                  WGC3Dsizei, const WGC3Denum*)
 
 DELEGATE_TO_GL_9(asyncTexImage2DCHROMIUM, AsyncTexImage2DCHROMIUM,
     WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dsizei, WGC3Dsizei, WGC3Dint,
     WGC3Denum, WGC3Denum, const void*)
 
 DELEGATE_TO_GL_9(asyncTexSubImage2DCHROMIUM, AsyncTexSubImage2DCHROMIUM,
     WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei,
     WGC3Denum, WGC3Denum, const void*)
 
 DELEGATE_TO_GL_1(waitAsyncTexImage2DCHROMIUM, WaitAsyncTexImage2DCHROMIUM,
     WGC3Denum)
 
 }  // namespace gpu
 }  // namespace webkit