| // Copyright 2014 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 "mojo/skia/ganesh_context.h" |
| |
| #include "gpu/command_buffer/client/gles2_lib.h" |
| #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h" |
| #include "third_party/skia/include/gpu/gl/GrGLInterface.h" |
| |
| namespace mojo { |
| namespace { |
| |
| // The limit of the number of GPU resources we hold in the GrContext's |
| // GPU cache. |
| const int kMaxGaneshResourceCacheCount = 2048; |
| |
| // The limit of the bytes allocated toward GPU resources in the GrContext's |
| // GPU cache. |
| const size_t kMaxGaneshResourceCacheBytes = 96 * 1024 * 1024; |
| |
| void EnsureInitialized() { |
| static bool initialized; |
| if (initialized) |
| return; |
| gles2::Initialize(); |
| initialized = true; |
| } |
| } |
| |
| GaneshContext::Scope::Scope(GaneshContext* context) |
| : previous_(gles2::GetGLContext()) { |
| auto gl = context->gl_context_->gl(); |
| DCHECK(gl); |
| gles2::SetGLContext(gl); |
| DCHECK(gles2::GetGLContext()); |
| } |
| |
| GaneshContext::Scope::~Scope() { |
| gles2::SetGLContext(previous_); |
| } |
| |
| GaneshContext::GaneshContext(base::WeakPtr<GLContext> gl_context) |
| : gl_context_(gl_context) { |
| EnsureInitialized(); |
| |
| DCHECK(gl_context_); |
| gl_context_->AddObserver(this); |
| Scope scope(this); |
| |
| skia::RefPtr<GrGLInterface> interface = |
| skia::AdoptRef(skia_bindings::CreateCommandBufferSkiaGLBinding()); |
| DCHECK(interface); |
| |
| context_ = skia::AdoptRef(GrContext::Create( |
| kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get()))); |
| DCHECK(context_); |
| context_->setResourceCacheLimits(kMaxGaneshResourceCacheCount, |
| kMaxGaneshResourceCacheBytes); |
| } |
| |
| GaneshContext::~GaneshContext() { |
| if (context_) { |
| Scope scope(this); |
| context_.clear(); |
| } |
| if (gl_context_.get()) |
| gl_context_->RemoveObserver(this); |
| } |
| |
| bool GaneshContext::InScope() const { |
| return gles2::GetGLContext() == gl_context_->gl(); |
| } |
| |
| void GaneshContext::OnContextLost() { |
| context_->abandonContext(); |
| context_.clear(); |
| gl_context_.reset(); |
| } |
| |
| } // namespace mojo |