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// 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 "components/viz/service/display_embedder/viz_process_context_provider.h"
#include <stdint.h>
#include <utility>
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "components/viz/common/resources/platform_color.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/raster_implementation_gles.h"
#include "gpu/command_buffer/common/context_creation_attribs.h"
#include "gpu/command_buffer/service/gpu_preferences.h"
#include "gpu/command_buffer/service/mailbox_manager.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "gpu/config/gpu_feature_info.h"
#include "gpu/ipc/common/surface_handle.h"
#include "gpu/ipc/gl_in_process_context.h"
#include "gpu/ipc/gpu_in_process_thread_service.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"
namespace viz {
namespace {
gpu::ContextCreationAttribs CreateAttributes() {
gpu::ContextCreationAttribs attributes;
attributes.alpha_size = -1;
attributes.depth_size = 0;
attributes.stencil_size = 8;
attributes.samples = 0;
attributes.sample_buffers = 0;
attributes.fail_if_major_perf_caveat = false;
attributes.bind_generates_resource = false;
return attributes;
}
} // namespace
VizProcessContextProvider::VizProcessContextProvider(
scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
gpu::SurfaceHandle surface_handle,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gpu::ImageFactory* image_factory,
gpu::GpuChannelManagerDelegate* gpu_channel_manager_delegate,
const gpu::SharedMemoryLimits& limits)
: attributes_(CreateAttributes()),
context_(gpu::GLInProcessContext::CreateWithoutInit()),
context_result_(
context_->Initialize(std::move(service),
nullptr,
(surface_handle == gpu::kNullSurfaceHandle),
surface_handle,
attributes_,
limits,
gpu_memory_buffer_manager,
image_factory,
gpu_channel_manager_delegate,
base::ThreadTaskRunnerHandle::Get())),
cache_controller_(std::make_unique<ContextCacheController>(
context_->GetImplementation(),
base::ThreadTaskRunnerHandle::Get())) {}
VizProcessContextProvider::~VizProcessContextProvider() = default;
void VizProcessContextProvider::AddRef() const {
base::RefCountedThreadSafe<VizProcessContextProvider>::AddRef();
}
void VizProcessContextProvider::Release() const {
base::RefCountedThreadSafe<VizProcessContextProvider>::Release();
}
gpu::ContextResult VizProcessContextProvider::BindToCurrentThread() {
return context_result_;
}
gpu::gles2::GLES2Interface* VizProcessContextProvider::ContextGL() {
return context_->GetImplementation();
}
gpu::ContextSupport* VizProcessContextProvider::ContextSupport() {
return context_->GetImplementation();
}
class GrContext* VizProcessContextProvider::GrContext() {
if (gr_context_)
return gr_context_->get();
size_t max_resource_cache_bytes;
size_t max_glyph_cache_texture_bytes;
skia_bindings::GrContextForGLES2Interface::
DetermineCacheLimitsFromAvailableMemory(&max_resource_cache_bytes,
&max_glyph_cache_texture_bytes);
gr_context_.reset(new skia_bindings::GrContextForGLES2Interface(
ContextGL(), ContextSupport(), ContextCapabilities(),
max_resource_cache_bytes, max_glyph_cache_texture_bytes));
return gr_context_->get();
}
ContextCacheController* VizProcessContextProvider::CacheController() {
return cache_controller_.get();
}
base::Lock* VizProcessContextProvider::GetLock() {
return &context_lock_;
}
const gpu::Capabilities& VizProcessContextProvider::ContextCapabilities()
const {
return context_->GetCapabilities();
}
const gpu::GpuFeatureInfo& VizProcessContextProvider::GetGpuFeatureInfo()
const {
return context_->GetGpuFeatureInfo();
}
void VizProcessContextProvider::AddObserver(ContextLostObserver* obs) {}
void VizProcessContextProvider::RemoveObserver(ContextLostObserver* obs) {}
uint32_t VizProcessContextProvider::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 VizProcessContextProvider::SetUpdateVSyncParametersCallback(
const gpu::InProcessCommandBuffer::UpdateVSyncParametersCallback&
callback) {
context_->SetUpdateVSyncParametersCallback(callback);
}
} // namespace viz
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