cc/test/test_in_process_context_provider.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/test/test_in_process_context_provider.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "gpu/GLES2/gl2extchromium.h"
   9 #include "gpu/command_buffer/client/gl_in_process_context.h"
  10 #include "gpu/command_buffer/client/gles2_implementation.h"
  11 #include "gpu/command_buffer/client/gles2_lib.h"
  12 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
  13 #include "third_party/khronos/GLES2/gl2.h"
  14 #include "third_party/khronos/GLES2/gl2ext.h"
  15 #include "third_party/skia/include/gpu/GrContext.h"
  16 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
  17 #include "ui/gfx/native_widget_types.h"
  18
  19 namespace cc {
  20
  21 // static
  22 scoped_ptr<gpu::GLInProcessContext> CreateTestInProcessContext() {
  23   const bool is_offscreen = true;
  24   const bool share_resources = true;
  25   gpu::GLInProcessContextAttribs attribs;
  26   attribs.alpha_size = 8;
  27   attribs.blue_size = 8;
  28   attribs.green_size = 8;
  29   attribs.red_size = 8;
  30   attribs.depth_size = 24;
  31   attribs.stencil_size = 8;
  32   attribs.samples = 0;
  33   attribs.sample_buffers = 0;
  34   attribs.fail_if_major_perf_caveat = false;
  35   gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
  36
  37   scoped_ptr<gpu::GLInProcessContext> context = make_scoped_ptr(
  38       gpu::GLInProcessContext::CreateContext(is_offscreen,
  39                                              gfx::AcceleratedWidget(),
  40                                              gfx::Size(1, 1),
  41                                              share_resources,
  42                                              attribs,
  43                                              gpu_preference));
  44   DCHECK(context);
  45   return context.Pass();
  46 }
  47
  48 TestInProcessContextProvider::TestInProcessContextProvider()
  49     : context_(CreateTestInProcessContext()) {}
  50
  51 TestInProcessContextProvider::~TestInProcessContextProvider() {
  52 }
  53
  54 bool TestInProcessContextProvider::BindToCurrentThread() { return true; }
  55
  56 gpu::gles2::GLES2Interface* TestInProcessContextProvider::ContextGL() {
  57   return context_->GetImplementation();
  58 }
  59
  60 gpu::ContextSupport* TestInProcessContextProvider::ContextSupport() {
  61   return context_->GetImplementation();
  62 }
  63
  64 namespace {
  65
  66 // Singleton used to initialize and terminate the gles2 library.
  67 class GLES2Initializer {
  68  public:
  69   GLES2Initializer() { ::gles2::Initialize(); }
  70
  71   ~GLES2Initializer() { ::gles2::Terminate(); }
  72
  73  private:
  74   DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
  75 };
  76
  77 static base::LazyInstance<GLES2Initializer> g_gles2_initializer =
  78     LAZY_INSTANCE_INITIALIZER;
  79
  80 }  // namespace
  81
  82 static void BindGrContextCallback(const GrGLInterface* interface) {
  83   TestInProcessContextProvider* context_provider =
  84       reinterpret_cast<TestInProcessContextProvider*>(interface->fCallbackData);
  85
  86   gles2::SetGLContext(context_provider->ContextGL());
  87 }
  88
  89 class GrContext* TestInProcessContextProvider::GrContext() {
  90   if (gr_context_)
  91     return gr_context_.get();
  92
  93   // The GrGLInterface factory will make GL calls using the C GLES2 interface.
  94   // Make sure the gles2 library is initialized first on exactly one thread.
  95   g_gles2_initializer.Get();
  96   gles2::SetGLContext(ContextGL());
  97
  98   skia::RefPtr<GrGLInterface> interface =
  99       skia::AdoptRef(skia_bindings::CreateCommandBufferSkiaGLBinding());
 100   interface->fCallback = BindGrContextCallback;
 101   interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
 102
 103   gr_context_ = skia::AdoptRef(GrContext::Create(
 104       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
 105
 106   return gr_context_.get();
 107 }
 108
 109 ContextProvider::Capabilities
 110 TestInProcessContextProvider::ContextCapabilities() {
 111   return ContextProvider::Capabilities();
 112 }
 113
 114 bool TestInProcessContextProvider::IsContextLost() { return false; }
 115
 116 void TestInProcessContextProvider::VerifyContexts() {}
 117
 118 void TestInProcessContextProvider::DeleteCachedResources() {
 119   if (gr_context_)
 120     gr_context_->freeGpuResources();
 121 }
 122
 123 bool TestInProcessContextProvider::DestroyedOnMainThread() { return false; }
 124
 125 void TestInProcessContextProvider::SetLostContextCallback(
 126     const LostContextCallback& lost_context_callback) {}
 127
 128 void TestInProcessContextProvider::SetMemoryPolicyChangedCallback(
 129     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {}
 130
 131 }  // namespace cc