gpu/skia_runner/in_process_graphics_system.cc

   1 // Copyright (c) 2015 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 "gpu/skia_runner/in_process_graphics_system.h"
   6
   7 #include <iostream>
   8
   9 #include "base/lazy_instance.h"
  10 #include "base/memory/discardable_memory.h"
  11 #include "base/memory/discardable_memory_allocator.h"
  12 #include "base/thread_task_runner_handle.h"
  13 #include "gpu/command_buffer/client/gles2_implementation.h"
  14 #include "gpu/command_buffer/client/gles2_lib.h"
  15 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
  16 #include "third_party/khronos/GLES2/gl2.h"
  17 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
  18
  19 namespace {
  20
  21 // TODO(hendrikw): Replace TestDiscardableMemoryAllocator and move to base?
  22 class NonDiscardableMemory : public base::DiscardableMemory {
  23  public:
  24   explicit NonDiscardableMemory(size_t size) : data_(new uint8_t[size]) {}
  25   bool Lock() override { return false; }
  26   void Unlock() override {}
  27   void* data() const override { return data_.get(); }
  28
  29  private:
  30   scoped_ptr<uint8_t[]> data_;
  31 };
  32
  33 class NonDiscardableMemoryAllocator : public base::DiscardableMemoryAllocator {
  34  public:
  35   // Overridden from DiscardableMemoryAllocator:
  36   scoped_ptr<base::DiscardableMemory> AllocateLockedDiscardableMemory(
  37       size_t size) override {
  38     return make_scoped_ptr(new NonDiscardableMemory(size));
  39   }
  40 };
  41
  42 // Singleton used to initialize and terminate the gles2 library.
  43 class GLES2Initializer {
  44  public:
  45   GLES2Initializer() { gles2::Initialize(); }
  46   ~GLES2Initializer() { gles2::Terminate(); }
  47
  48  private:
  49   DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
  50 };
  51
  52 base::LazyInstance<GLES2Initializer> g_gles2_initializer =
  53     LAZY_INSTANCE_INITIALIZER;
  54 base::LazyInstance<NonDiscardableMemoryAllocator> g_discardable;
  55
  56 }  // namespace anonymous
  57
  58 namespace skia_runner {
  59
  60 void BindContext3DGLContextCallback(const GrGLInterface* gl_interface) {
  61   gles2::SetGLContext(reinterpret_cast<gpu::GLInProcessContext*>(
  62                           gl_interface->fCallbackData)->GetImplementation());
  63 }
  64
  65 InProcessGraphicsSystem::InProcessGraphicsSystem() {
  66   base::DiscardableMemoryAllocator::SetInstance(&g_discardable.Get());
  67   g_gles2_initializer.Get();
  68
  69   if (!gfx::GLSurface::InitializeOneOff()) {
  70     LOG(ERROR) << "Unable to initialize gfx::GLSurface.";
  71     return;
  72   }
  73
  74   // Create the in process context.
  75   in_process_context_ = CreateInProcessContext();
  76   if (!in_process_context_) {
  77     LOG(ERROR) << "Unable to create in process context.";
  78     return;
  79   }
  80
  81   // Create and set up skia's GL bindings.
  82   gles2::SetGLContext(in_process_context_->GetImplementation());
  83   GrGLInterface* bindings = skia_bindings::CreateCommandBufferSkiaGLBinding();
  84   if (!bindings) {
  85     LOG(ERROR) << "Unable to create skia command buffer bindings.";
  86     return;
  87   }
  88
  89   bindings->fCallback = BindContext3DGLContextCallback;
  90   bindings->fCallbackData =
  91       reinterpret_cast<GrGLInterfaceCallbackData>(in_process_context_.get());
  92
  93   // Create skia's graphics context.
  94   gr_context_ = skia::AdoptRef(GrContext::Create(
  95       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(bindings)));
  96
  97   if (!gr_context_) {
  98     LOG(ERROR) << "Unable to create skia graphics context.";
  99     return;
 100   }
 101
 102   // Set skia's graphics context cache size.
 103   const int kMaxGaneshResourceCacheCount = 2048;
 104   const size_t kMaxGaneshResourceCacheBytes = 96 * 1024 * 1024;
 105   gr_context_->setResourceCacheLimits(kMaxGaneshResourceCacheCount,
 106                                       kMaxGaneshResourceCacheBytes);
 107 }
 108
 109 InProcessGraphicsSystem::~InProcessGraphicsSystem() {
 110 }
 111
 112 bool InProcessGraphicsSystem::IsSuccessfullyInitialized() const {
 113   return gr_context_;
 114 }
 115
 116 int InProcessGraphicsSystem::GetMaxTextureSize() const {
 117   int max_texture_size = 0;
 118   in_process_context_->GetImplementation()->GetIntegerv(GL_MAX_TEXTURE_SIZE,
 119                                                         &max_texture_size);
 120   return max_texture_size;
 121 }
 122
 123 scoped_ptr<gpu::GLInProcessContext>
 124 InProcessGraphicsSystem::CreateInProcessContext() const {
 125   const bool is_offscreen = true;
 126   const bool share_resources = true;
 127   gpu::gles2::ContextCreationAttribHelper attribs;
 128   attribs.alpha_size = 8;
 129   attribs.blue_size = 8;
 130   attribs.green_size = 8;
 131   attribs.red_size = 8;
 132   attribs.depth_size = 24;
 133   attribs.stencil_size = 8;
 134   attribs.samples = 0;
 135   attribs.sample_buffers = 0;
 136   attribs.fail_if_major_perf_caveat = false;
 137   attribs.bind_generates_resource = false;
 138   gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
 139
 140   scoped_ptr<gpu::GLInProcessContext> context =
 141       make_scoped_ptr(gpu::GLInProcessContext::Create(
 142           nullptr, nullptr, is_offscreen, gfx::kNullAcceleratedWidget,
 143           gfx::Size(1, 1), nullptr, share_resources, attribs, gpu_preference,
 144           gpu::GLInProcessContextSharedMemoryLimits(), nullptr, nullptr));
 145
 146   DCHECK(context);
 147   return context.Pass();
 148 }
 149
 150 }  // namespace skia_runner