Add InProcessContextProvider and update InProcessCommandBuffer

cc/surfaces/in_process_context_provider.cc

+// Copyright 2016 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 "cc/surfaces/in_process_context_provider.h"
+
+#include <stdint.h>
+
+#include "base/lazy_instance.h"
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "cc/resources/platform_color.h"
+#include "cc/surfaces/deferred_gpu_command_service.h"
+#include "gpu/GLES2/gl2extchromium.h"
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "gpu/command_buffer/client/gles2_lib.h"
+#include "gpu/command_buffer/common/gles2_cmd_utils.h"
+#include "gpu/command_buffer/service/framebuffer_completeness_cache.h"
+#include "gpu/command_buffer/service/gpu_preferences.h"
+#include "gpu/command_buffer/service/mailbox_manager.h"
+#include "gpu/command_buffer/service/shader_translator_cache.h"
+#include "gpu/command_buffer/service/sync_point_manager.h"
+#include "gpu/ipc/gl_in_process_context.h"
+#include "gpu/ipc/in_process_command_buffer.h"
+#include "gpu/skia_bindings/grcontext_for_gles2_interface.h"
+#include "third_party/khronos/GLES2/gl2.h"
+#include "third_party/khronos/GLES2/gl2ext.h"
+#include "third_party/skia/include/gpu/GrContext.h"
+#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gl/gl_share_group.h"
+
+namespace cc {
+
+namespace {
+
+gpu::gles2::ContextCreationAttribHelper CreateAttributes() {
+  gpu::gles2::ContextCreationAttribHelper attributes;
+  attributes.alpha_size = -1;
+  attributes.depth_size = 0;
+  attributes.stencil_size = 0;
+  attributes.samples = 0;
+  attributes.sample_buffers = 0;
+  attributes.fail_if_major_perf_caveat = false;
+  attributes.bind_generates_resource = false;
+  return attributes;
+}
+
+std::unique_ptr<gpu::GLInProcessContext> CreateInProcessContext(
+    scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
+    const gpu::gles2::ContextCreationAttribHelper& attributes,
+    gfx::AcceleratedWidget widget,
+    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
+    gpu::ImageFactory* image_factory,
+    const gpu::SharedMemoryLimits& limits,
+    gpu::GLInProcessContext* shared_context) {
+  const bool is_offscreen = widget == gfx::kNullAcceleratedWidget;
+  return base::WrapUnique(gpu::GLInProcessContext::Create(
+      service, nullptr, is_offscreen, widget, shared_context, attributes,
+      limits, gpu_memory_buffer_manager, image_factory,
+      base::ThreadTaskRunnerHandle::Get()));
+}
+
+}  // namespace
+
+InProcessContextProvider::InProcessContextProvider(
+    scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
+    gfx::AcceleratedWidget widget,
+    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
+    gpu::ImageFactory* image_factory,
+    const gpu::SharedMemoryLimits& limits,
+    InProcessContextProvider* shared_context)
+    : attributes_(CreateAttributes()),
+      context_(CreateInProcessContext(
+          service,
+          attributes_,
+          widget,
+          gpu_memory_buffer_manager,
+          image_factory,
+          limits,
+          (shared_context ? shared_context->context_.get() : nullptr))) {
+  cache_controller_.reset(new ContextCacheController(
+      context_->GetImplementation(), base::ThreadTaskRunnerHandle::Get()));
+}
+
+InProcessContextProvider::~InProcessContextProvider() = default;
+
+bool InProcessContextProvider::BindToCurrentThread() {
+  return !!context_;
+}
+
+gpu::gles2::GLES2Interface* InProcessContextProvider::ContextGL() {
+  return context_->GetImplementation();
+}
+
+gpu::ContextSupport* InProcessContextProvider::ContextSupport() {
+  return context_->GetImplementation();
+}
+
+class GrContext* InProcessContextProvider::GrContext() {
+  if (gr_context_)
+    return gr_context_->get();
+
+  gr_context_.reset(new skia_bindings::GrContextForGLES2Interface(ContextGL()));
+  return gr_context_->get();
+}
+
+ContextCacheController* InProcessContextProvider::CacheController() {
+  return cache_controller_.get();
+}
+
+void InProcessContextProvider::InvalidateGrContext(uint32_t state) {
+  if (gr_context_)
+    gr_context_->ResetContext(state);
+}
+
+base::Lock* InProcessContextProvider::GetLock() {
+  return &context_lock_;
+}
+
+gpu::Capabilities InProcessContextProvider::ContextCapabilities() {
+  gpu::Capabilities capabilities;
+  capabilities.texture_rectangle = true;
+  capabilities.sync_query = true;
+  switch (PlatformColor::Format()) {
+    case PlatformColor::SOURCE_FORMAT_RGBA8:
+      capabilities.texture_format_bgra8888 = false;
+      break;
+    case PlatformColor::SOURCE_FORMAT_BGRA8:
+      capabilities.texture_format_bgra8888 = true;
+      break;
+  }
+  return capabilities;
+}
+
+void InProcessContextProvider::SetLostContextCallback(
+    const LostContextCallback& lost_context_callback) {
+  // This code lives in the GPU process and so this would go away
+  // if the context is lost?
+}
+
+uint32_t InProcessContextProvider::GetCopyTextureInternalFormat() {
+  if (attributes_.alpha_size > 0)
+    return GL_RGBA;
+  DCHECK_NE(attributes_.red_size, 0);
+  DCHECK_NE(attributes_.green_size, 0);
+  DCHECK_NE(attributes_.blue_size, 0);
+  return GL_RGB;
+}
+
+void InProcessContextProvider::SetSwapBuffersCompletionCallback(
+    const gpu::InProcessCommandBuffer::SwapBuffersCompletionCallback&
+        callback) {
+  context_->GetInProcessCommandBuffer()->SetSwapBuffersCompletionCallback(

[piman, 2016/11/15 21:57:32]

nit: Demeter is crying. Could we expose SetSwapBuffersCompletionCallback and
SetUpdateVSyncParametersCallback on GLInProcessContext instead of exposing
InProcessCommandBuffer?

[Fady Samuel, 2016/11/16 00:33:35]

Done.

+      callback);
+}
+
+void InProcessContextProvider::SetUpdateVSyncParametersCallback(
+    const gpu::InProcessCommandBuffer::UpdateVSyncParametersCallback&
+        callback) {
+  context_->GetInProcessCommandBuffer()->SetUpdateVSyncParametersCallback(
+      callback);
+}
+
+}  // namespace cc