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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/webgraphicscontext3d_provider_impl.h"
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "build/build_config.h"
#include "cc/paint/paint_image.h"
#include "cc/tiles/gpu_image_decode_cache.h"
#include "content/public/common/content_switches.h"
#include "gpu/command_buffer/client/context_support.h"
#include "gpu/command_buffer/client/gl_helper.h"
#include "gpu/config/gpu_feature_info.h"
#include "services/viz/public/cpp/gpu/context_provider_command_buffer.h"
#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"
namespace content {
WebGraphicsContext3DProviderImpl::WebGraphicsContext3DProviderImpl(
scoped_refptr<viz::ContextProviderCommandBuffer> provider)
: provider_(std::move(provider)) {}
WebGraphicsContext3DProviderImpl::~WebGraphicsContext3DProviderImpl() {
provider_->RemoveObserver(this);
}
bool WebGraphicsContext3DProviderImpl::BindToCurrentSequence() {
// TODO(danakj): Could plumb this result out to the caller so they know to
// retry or not, if any client cared to know if it should retry or not.
// Call AddObserver here instead of in constructor so that it's called on the
// correct thread.
provider_->AddObserver(this);
return provider_->BindToCurrentSequence() == gpu::ContextResult::kSuccess;
}
gpu::InterfaceBase* WebGraphicsContext3DProviderImpl::InterfaceBase() {
if (ContextGL())
return ContextGL();
if (RasterInterface())
return RasterInterface();
if (WebGPUInterface())
return WebGPUInterface();
return nullptr;
}
gpu::gles2::GLES2Interface* WebGraphicsContext3DProviderImpl::ContextGL() {
return provider_->ContextGL();
}
gpu::raster::RasterInterface*
WebGraphicsContext3DProviderImpl::RasterInterface() {
return provider_->RasterInterface();
}
gpu::webgpu::WebGPUInterface*
WebGraphicsContext3DProviderImpl::WebGPUInterface() {
return provider_->WebGPUInterface();
}
gpu::ContextSupport* WebGraphicsContext3DProviderImpl::ContextSupport() {
return provider_->ContextSupport();
}
bool WebGraphicsContext3DProviderImpl::IsContextLost() {
return RasterInterface() &&
RasterInterface()->GetGraphicsResetStatusKHR() != GL_NO_ERROR;
}
GrDirectContext* WebGraphicsContext3DProviderImpl::GetGrContext() {
return provider_->GrContext();
}
const gpu::Capabilities& WebGraphicsContext3DProviderImpl::GetCapabilities()
const {
return provider_->ContextCapabilities();
}
const gpu::GpuFeatureInfo& WebGraphicsContext3DProviderImpl::GetGpuFeatureInfo()
const {
return provider_->GetGpuFeatureInfo();
}
const blink::WebglPreferences&
WebGraphicsContext3DProviderImpl::GetWebglPreferences() const {
static bool initialized = false;
static blink::WebglPreferences prefs;
if (!initialized) {
initialized = true;
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
auto gpu_feature_info = GetGpuFeatureInfo();
if (gpu_feature_info.IsWorkaroundEnabled(MAX_MSAA_SAMPLE_COUNT_2))
prefs.msaa_sample_count = 2;
if (command_line->HasSwitch(switches::kWebglMSAASampleCount)) {
std::string sample_count =
command_line->GetSwitchValueASCII(switches::kWebglMSAASampleCount);
uint32_t count;
if (base::StringToUint(sample_count, &count)) {
prefs.msaa_sample_count = count;
}
}
if (command_line->HasSwitch(switches::kWebglAntialiasingMode)) {
std::string mode =
command_line->GetSwitchValueASCII(switches::kWebglAntialiasingMode);
if (mode == "none") {
prefs.anti_aliasing_mode = blink::kAntialiasingModeNone;
} else if (mode == "explicit") {
prefs.anti_aliasing_mode = blink::kAntialiasingModeMSAAExplicitResolve;
} else if (mode == "implicit") {
prefs.anti_aliasing_mode = blink::kAntialiasingModeMSAAImplicitResolve;
} else {
prefs.anti_aliasing_mode = blink::kAntialiasingModeUnspecified;
}
}
// Set default context limits for WebGL.
#if BUILDFLAG(IS_ANDROID)
prefs.max_active_webgl_contexts = 8u;
#else
prefs.max_active_webgl_contexts = 16u;
#endif
prefs.max_active_webgl_contexts_on_worker = 4u;
if (command_line->HasSwitch(switches::kMaxActiveWebGLContexts)) {
std::string max_contexts =
command_line->GetSwitchValueASCII(switches::kMaxActiveWebGLContexts);
uint32_t max_val;
if (base::StringToUint(max_contexts, &max_val)) {
// It shouldn't be common for users to override this. If they do,
// just override both values.
prefs.max_active_webgl_contexts = max_val;
prefs.max_active_webgl_contexts_on_worker = max_val;
}
}
}
return prefs;
}
gpu::GLHelper* WebGraphicsContext3DProviderImpl::GetGLHelper() {
if (!gl_helper_) {
gl_helper_ = std::make_unique<gpu::GLHelper>(provider_->ContextGL(),
provider_->ContextSupport());
}
return gl_helper_.get();
}
void WebGraphicsContext3DProviderImpl::SetLostContextCallback(
base::RepeatingClosure c) {
context_lost_callback_ = std::move(c);
}
void WebGraphicsContext3DProviderImpl::SetErrorMessageCallback(
base::RepeatingCallback<void(const char*, int32_t)> c) {
provider_->ContextSupport()->SetErrorMessageCallback(std::move(c));
}
void WebGraphicsContext3DProviderImpl::OnContextLost() {
if (!context_lost_callback_.is_null())
context_lost_callback_.Run();
}
cc::ImageDecodeCache* WebGraphicsContext3DProviderImpl::ImageDecodeCache(
SkColorType color_type) {
DCHECK(GetCapabilities().gpu_rasterization ||
GetGrContext()->colorTypeSupportedAsImage(color_type));
auto cache_iterator = image_decode_cache_map_.find(color_type);
if (cache_iterator != image_decode_cache_map_.end())
return cache_iterator->second.get();
// This denotes the allocated GPU memory budget for the cache used for
// book-keeping. The cache indicates when the total memory locked exceeds this
// budget in cc::DecodedDrawImage.
static const size_t kMaxWorkingSetBytes = 64 * 1024 * 1024;
// TransferCache is used only with OOP raster.
const bool use_transfer_cache = GetCapabilities().gpu_rasterization;
auto insertion_result = image_decode_cache_map_.emplace(
color_type,
std::make_unique<cc::GpuImageDecodeCache>(
provider_.get(), use_transfer_cache, color_type, kMaxWorkingSetBytes,
provider_->ContextCapabilities().max_texture_size, nullptr));
DCHECK(insertion_result.second);
cache_iterator = insertion_result.first;
return cache_iterator->second.get();
}
gpu::SharedImageInterface*
WebGraphicsContext3DProviderImpl::SharedImageInterface() {
return provider_->SharedImageInterface();
}
viz::RasterContextProvider*
WebGraphicsContext3DProviderImpl::RasterContextProvider() const {
return provider_.get();
}
unsigned int WebGraphicsContext3DProviderImpl::GetGrGLTextureFormat(
viz::SharedImageFormat format) const {
return provider_->GetGrGLTextureFormat(format);
}
} // namespace content
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