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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.
#ifndef GPU_CONFIG_GPU_PREFERENCES_H_
#define GPU_CONFIG_GPU_PREFERENCES_H_
#include <stddef.h>
#include <string>
#include <vector>
#include "base/macros.h"
#include "build/build_config.h"
#include "gpu/gpu_export.h"
#include "media/media_buildflags.h"
#include "ui/gfx/buffer_types.h"
#if defined(USE_OZONE)
#include "base/message_loop/message_pump_type.h"
#endif
namespace gpu {
// The size to set for the program cache for default and low-end device cases.
#if !defined(OS_ANDROID)
const size_t kDefaultMaxProgramCacheMemoryBytes = 6 * 1024 * 1024;
#else
const size_t kDefaultMaxProgramCacheMemoryBytes = 2 * 1024 * 1024;
const size_t kLowEndMaxProgramCacheMemoryBytes = 128 * 1024;
#endif
enum VulkanImplementationName : uint32_t {
kNone = 0,
kNative = 1,
kSwiftshader = 2,
kLast = kSwiftshader,
};
// NOTE: if you modify this structure then you must also modify the
// following two files to keep them in sync:
// src/gpu/ipc/common/gpu_preferences.mojom
// src/gpu/ipc/common/gpu_preferences_mojom_traits.h
struct GPU_EXPORT GpuPreferences {
public:
GpuPreferences();
GpuPreferences(const GpuPreferences& other);
~GpuPreferences();
// Encode struct into a string so it can be passed as a commandline switch.
std::string ToSwitchValue();
// Decode the encoded string back to GpuPrefences struct.
// If return false, |this| won't be touched.
bool FromSwitchValue(const std::string& data);
// ===================================
// Settings from //content/public/common/content_switches.h
// Disables hardware acceleration of video decode, where available.
bool disable_accelerated_video_decode = false;
// Disables hardware acceleration of video decode, where available.
bool disable_accelerated_video_encode = false;
// Causes the GPU process to display a dialog on launch.
bool gpu_startup_dialog = false;
// Disable the thread that crashes the GPU process if it stops responding to
// messages.
bool disable_gpu_watchdog = false;
// Starts the GPU sandbox before creating a GL context.
bool gpu_sandbox_start_early = false;
// Enables using CODECAPI_AVLowLatencyMode. Windows only.
bool enable_low_latency_dxva = true;
// Enables support for avoiding copying DXGI NV12 textures. Windows only.
bool enable_zero_copy_dxgi_video = false;
// Enables support for outputting NV12 video frames. Windows only.
bool enable_nv12_dxgi_video = false;
// Enables MediaFoundationVideoEncoderAccelerator on Windows 7. Windows 7 does
// not support some of the attributes which may impact the performance or the
// quality of output. So this flag is disabled by default. Windows only.
bool enable_media_foundation_vea_on_windows7 = false;
// Disables the use of a 3D software rasterizer, for example, SwiftShader.
bool disable_software_rasterizer = false;
bool log_gpu_control_list_decisions = false;
// ===================================
// Settings from //gpu/command_buffer/service/gpu_switches.cc
// Always return success when compiling a shader. Linking will still fail.
bool compile_shader_always_succeeds = false;
// Disable the GL error log limit.
bool disable_gl_error_limit = false;
// Disable the GLSL translator.
bool disable_glsl_translator = false;
// Turn off user-defined name hashing in shaders.
bool disable_shader_name_hashing = false;
// Turn on Logging GPU commands.
bool enable_gpu_command_logging = false;
// Turn on Calling GL Error after every command.
bool enable_gpu_debugging = false;
// Enable GPU service logging.
bool enable_gpu_service_logging_gpu = false;
// Enable logging of GPU driver debug messages.
bool enable_gpu_driver_debug_logging = false;
// Turn off gpu program caching
bool disable_gpu_program_cache = false;
// Enforce GL minimums.
bool enforce_gl_minimums = false;
// Sets the total amount of memory that may be allocated for GPU resources
uint32_t force_gpu_mem_available = 0;
// Sets the maximum size of the in-memory gpu program cache, in kb
uint32_t gpu_program_cache_size = kDefaultMaxProgramCacheMemoryBytes;
// Disables the GPU shader on disk cache.
bool disable_gpu_shader_disk_cache = false;
// Simulates shared textures when share groups are not available.
// Not available everywhere.
bool enable_threaded_texture_mailboxes = false;
// Include ANGLE's intermediate representation (AST) output in shader
// compilation info logs.
bool gl_shader_interm_output = false;
// Emulate ESSL lowp and mediump float precisions by mutating the shaders to
// round intermediate values in ANGLE.
bool emulate_shader_precision = false;
// ===================================
// Settings from //gpu/config/gpu_switches.h
// Enables the use of SurfaceControl for overlays on Android.
bool enable_android_surface_control = false;
// ===================================
// Settings from //ui/gl/gl_switches.h
// Turns on GPU logging (debug build only).
bool enable_gpu_service_logging = false;
// Turns on calling TRACE for every GL call.
bool enable_gpu_service_tracing = false;
// Use the Pass-through command decoder, skipping all validation and state
// tracking.
bool use_passthrough_cmd_decoder = false;
// Disable using a single multiplanar GpuMemoryBuffer to store biplanar
// VideoFrames (e.g. NV12), see https://crbug.com/791676.
bool disable_biplanar_gpu_memory_buffers_for_video_frames = false;
// List of texture usage & formats that require use of a platform specific
// texture target.
std::vector<gfx::BufferUsageAndFormat> texture_target_exception_list;
// ===================================
// Settings from //gpu/config/gpu_switches.h
// Disables workarounds for various GPU driver bugs.
bool disable_gpu_driver_bug_workarounds = false;
// Ignores GPU blacklist.
bool ignore_gpu_blacklist = false;
// Oop rasterization preferences in the GPU process. disable wins over
// enable, and neither means use defaults from GpuFeatureInfo.
bool enable_oop_rasterization = false;
bool disable_oop_rasterization = false;
bool enable_oop_rasterization_ddl = false;
// Start the watchdog suspended, as the app is already backgrounded and won't
// send a background/suspend signal.
bool watchdog_starts_backgrounded = false;
// ===================================
// Settings from //gpu/command_buffer/service/gpu_switches.h
// Use Vulkan for rasterization and display compositing.
VulkanImplementationName use_vulkan = VulkanImplementationName::kNone;
// Enforce using vulkan protected memory.
bool enforce_vulkan_protected_memory = false;
// Use vulkan VK_KHR_surface for presenting.
bool disable_vulkan_surface = false;
// If Vulkan initialization has failed, do not fallback to GL. This is for
// testing in order to detect regressions which crash Vulkan.
bool disable_vulkan_fallback_to_gl_for_testing = false;
// Use Metal for rasterization and Skia-based display compositing. Note that
// this is compatible with GL-based display compositing.
bool enable_metal = false;
// ===================================
// Settings from //cc/base/switches.h
// Enable the GPU benchmarking extension; used by tests only.
bool enable_gpu_benchmarking_extension = false;
// Enable the WebGPU command buffer.
bool enable_webgpu = false;
#if defined(USE_OZONE)
// Determines message pump type for the GPU thread.
base::MessagePumpType message_pump_type = base::MessagePumpType::DEFAULT;
#endif
// Please update gpu_preferences_unittest.cc when making additions or
// changes to this struct.
};
} // namespace gpu
#endif // GPU_CONFIG_GPU_PREFERENCES_H_