src/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/command_buffer/common/gles2_cmd_utils.h"
  13 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
  14 #include "third_party/khronos/GLES2/gl2.h"
  15 #include "third_party/khronos/GLES2/gl2ext.h"
  16 #include "third_party/skia/include/gpu/GrContext.h"
  17 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
  18 #include "ui/gfx/native_widget_types.h"
  19
  20 namespace cc {
  21
  22 // static
  23 scoped_ptr<gpu::GLInProcessContext> CreateTestInProcessContext() {
  24   const bool is_offscreen = true;
  25   const bool share_resources = true;
  26   gpu::gles2::ContextCreationAttribHelper attribs;
  27   attribs.alpha_size = 8;
  28   attribs.blue_size = 8;
  29   attribs.green_size = 8;
  30   attribs.red_size = 8;
  31   attribs.depth_size = 24;
  32   attribs.stencil_size = 8;
  33   attribs.samples = 0;
  34   attribs.sample_buffers = 0;
  35   attribs.fail_if_major_perf_caveat = false;
  36   attribs.bind_generates_resource = false;
  37   gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
  38
  39   scoped_ptr<gpu::GLInProcessContext> context =
  40       make_scoped_ptr(gpu::GLInProcessContext::Create(
  41           NULL,
  42           NULL,
  43           is_offscreen,
  44           gfx::kNullAcceleratedWidget,
  45           gfx::Size(1, 1),
  46           NULL,
  47           share_resources,
  48           attribs,
  49           gpu_preference,
  50           gpu::GLInProcessContextSharedMemoryLimits()));
  51
  52   DCHECK(context);
  53   return context.Pass();
  54 }
  55
  56 TestInProcessContextProvider::TestInProcessContextProvider()
  57     : context_(CreateTestInProcessContext()) {}
  58
  59 TestInProcessContextProvider::~TestInProcessContextProvider() {
  60 }
  61
  62 bool TestInProcessContextProvider::BindToCurrentThread() { return true; }
  63
  64 gpu::gles2::GLES2Interface* TestInProcessContextProvider::ContextGL() {
  65   return context_->GetImplementation();
  66 }
  67
  68 gpu::ContextSupport* TestInProcessContextProvider::ContextSupport() {
  69   return context_->GetImplementation();
  70 }
  71
  72 namespace {
  73
  74 // Singleton used to initialize and terminate the gles2 library.
  75 class GLES2Initializer {
  76  public:
  77   GLES2Initializer() { ::gles2::Initialize(); }
  78
  79   ~GLES2Initializer() { ::gles2::Terminate(); }
  80
  81  private:
  82   DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
  83 };
  84
  85 static base::LazyInstance<GLES2Initializer> g_gles2_initializer =
  86     LAZY_INSTANCE_INITIALIZER;
  87
  88 }  // namespace
  89
  90 static void BindGrContextCallback(const GrGLInterface* interface) {
  91   TestInProcessContextProvider* context_provider =
  92       reinterpret_cast<TestInProcessContextProvider*>(interface->fCallbackData);
  93
  94   gles2::SetGLContext(context_provider->ContextGL());
  95 }
  96
  97 class GrContext* TestInProcessContextProvider::GrContext() {
  98   if (gr_context_)
  99     return gr_context_.get();
 100
 101   // The GrGLInterface factory will make GL calls using the C GLES2 interface.
 102   // Make sure the gles2 library is initialized first on exactly one thread.
 103   g_gles2_initializer.Get();
 104   gles2::SetGLContext(ContextGL());
 105
 106   skia::RefPtr<GrGLInterface> interface =
 107       skia::AdoptRef(skia_bindings::CreateCommandBufferSkiaGLBinding());
 108   interface->fCallback = BindGrContextCallback;
 109   interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
 110
 111   gr_context_ = skia::AdoptRef(GrContext::Create(
 112       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
 113
 114   return gr_context_.get();
 115 }
 116
 117 ContextProvider::Capabilities
 118 TestInProcessContextProvider::ContextCapabilities() {
 119   return ContextProvider::Capabilities();
 120 }
 121
 122 bool TestInProcessContextProvider::IsContextLost() { return false; }
 123
 124 void TestInProcessContextProvider::VerifyContexts() {}
 125
 126 void TestInProcessContextProvider::DeleteCachedResources() {
 127   if (gr_context_)
 128     gr_context_->freeGpuResources();
 129 }
 130
 131 bool TestInProcessContextProvider::DestroyedOnMainThread() { return false; }
 132
 133 void TestInProcessContextProvider::SetLostContextCallback(
 134     const LostContextCallback& lost_context_callback) {}
 135
 136 void TestInProcessContextProvider::SetMemoryPolicyChangedCallback(
 137     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {}
 138
 139 }  // namespace cc